Neuroendokrina modulacija imunskog odgovora: uloga simpato-adrenomedularnog sistema

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Neuroendokrina modulacija imunskog odgovora: uloga simpato-adrenomedularnog sistema (en)
Неуроендокрина модулација имунског одговора: улога симпато-адреномедуларног система (sr)
Neuroendokrina modulacija imunskog odgovora: uloga simpato-adrenomedularnog sistema (sr_RS)
Authors

Publications

Role of ovarian hormones in T-cell homeostasis: From the thymus to the periphery

Perišić, Milica; Stojić-Vukanić, Zorica; Pilipović, Ivan; Kosec, Duško; Nacka-Aleksić, Mirjana; Đikić, Jasmina; Arsenović-Ranin, Nevena; Leposavić, Gordana

(Elsevier Gmbh, Urban & Fischer Verlag, Jena, 2013)

TY  - JOUR
AU  - Perišić, Milica
AU  - Stojić-Vukanić, Zorica
AU  - Pilipović, Ivan
AU  - Kosec, Duško
AU  - Nacka-Aleksić, Mirjana
AU  - Đikić, Jasmina
AU  - Arsenović-Ranin, Nevena
AU  - Leposavić, Gordana
PY  - 2013
UR  - http://intor.torlakinstitut.com/handle/123456789/396
AB  - The study explored the putative role of ovarian hormones in the peripubertal remodelling of peripheral T-cell compartment. Ovariectomy at age of 1 month enhanced the peripubertal rise in CD4+ and CD8+ cell numbers in peripheral blood (PB) and spleen from 2-month-old rats. This reflected maintenance of thymopoietic efficiency at the prepubertal level (judging by numbers of the most mature CD4+ and CD8+ thymocytes and recent thymic emigrants) and alterations in T-cell survival/proliferation in the periphery. Compared with age-matched controls, the frequency of apoptotic cells among CD8+ peripheral blood lymphocytes (PBLs) and CD4+ and CD8+ splenocytes was diminished in ovariectomized (Ox) rats, at least partly, due to lower CD95 surface density. The diminished frequency of the apoptotic T splenocytes could also be associated with the rise in the amount of splenic IL-7 mRNA. Additionally, the latter finding was consistent with the augmented proliferation of CD4+ and CD8+ splenocytes. However, the enhanced proliferation of these cells could also be linked to the rise in IL-2 receptor surface density. This increase was related to the enhanced splenic TNF-alpha mRNA expression. Additionally, ovariectomy led to the phenotypic alterations in the major PBL and splenic T-cell subsets by diminishing/preventing the peripubertal changes in the frequency of cells at distinct stages of post-thymic differentiation/maturation (recent thymic emigrants, mature naive and memory cells), and by decreasing the frequency of NKT cells within peripheral CD8+ subsets. In addition to numerical and phenotypic changes in T-cell compartment (due to the lack of ovarian hormone action at both the thymic and peripheral level), Ox rats exhibited a much larger delayed-type hypersensitivity (DTH) response compared with age-matched controls. This suggested the augmented T-cell-mediated immune response in Ox rats compared with aged-matched controls. (C) 2012 Elsevier GmbH. All rights reserved.
PB  - Elsevier Gmbh, Urban & Fischer Verlag, Jena
T2  - Immunobiology
T1  - Role of ovarian hormones in T-cell homeostasis: From the thymus to the periphery
EP  - 367
IS  - 3
SP  - 353
VL  - 218
DO  - 10.1016/j.imbio.2012.05.009
UR  - conv_303
ER  - 
@article{
author = "Perišić, Milica and Stojić-Vukanić, Zorica and Pilipović, Ivan and Kosec, Duško and Nacka-Aleksić, Mirjana and Đikić, Jasmina and Arsenović-Ranin, Nevena and Leposavić, Gordana",
year = "2013",
abstract = "The study explored the putative role of ovarian hormones in the peripubertal remodelling of peripheral T-cell compartment. Ovariectomy at age of 1 month enhanced the peripubertal rise in CD4+ and CD8+ cell numbers in peripheral blood (PB) and spleen from 2-month-old rats. This reflected maintenance of thymopoietic efficiency at the prepubertal level (judging by numbers of the most mature CD4+ and CD8+ thymocytes and recent thymic emigrants) and alterations in T-cell survival/proliferation in the periphery. Compared with age-matched controls, the frequency of apoptotic cells among CD8+ peripheral blood lymphocytes (PBLs) and CD4+ and CD8+ splenocytes was diminished in ovariectomized (Ox) rats, at least partly, due to lower CD95 surface density. The diminished frequency of the apoptotic T splenocytes could also be associated with the rise in the amount of splenic IL-7 mRNA. Additionally, the latter finding was consistent with the augmented proliferation of CD4+ and CD8+ splenocytes. However, the enhanced proliferation of these cells could also be linked to the rise in IL-2 receptor surface density. This increase was related to the enhanced splenic TNF-alpha mRNA expression. Additionally, ovariectomy led to the phenotypic alterations in the major PBL and splenic T-cell subsets by diminishing/preventing the peripubertal changes in the frequency of cells at distinct stages of post-thymic differentiation/maturation (recent thymic emigrants, mature naive and memory cells), and by decreasing the frequency of NKT cells within peripheral CD8+ subsets. In addition to numerical and phenotypic changes in T-cell compartment (due to the lack of ovarian hormone action at both the thymic and peripheral level), Ox rats exhibited a much larger delayed-type hypersensitivity (DTH) response compared with age-matched controls. This suggested the augmented T-cell-mediated immune response in Ox rats compared with aged-matched controls. (C) 2012 Elsevier GmbH. All rights reserved.",
publisher = "Elsevier Gmbh, Urban & Fischer Verlag, Jena",
journal = "Immunobiology",
title = "Role of ovarian hormones in T-cell homeostasis: From the thymus to the periphery",
pages = "367-353",
number = "3",
volume = "218",
doi = "10.1016/j.imbio.2012.05.009",
url = "conv_303"
}
Perišić, M., Stojić-Vukanić, Z., Pilipović, I., Kosec, D., Nacka-Aleksić, M., Đikić, J., Arsenović-Ranin, N.,& Leposavić, G.. (2013). Role of ovarian hormones in T-cell homeostasis: From the thymus to the periphery. in Immunobiology
Elsevier Gmbh, Urban & Fischer Verlag, Jena., 218(3), 353-367.
https://doi.org/10.1016/j.imbio.2012.05.009
conv_303
Perišić M, Stojić-Vukanić Z, Pilipović I, Kosec D, Nacka-Aleksić M, Đikić J, Arsenović-Ranin N, Leposavić G. Role of ovarian hormones in T-cell homeostasis: From the thymus to the periphery. in Immunobiology. 2013;218(3):353-367.
doi:10.1016/j.imbio.2012.05.009
conv_303 .
Perišić, Milica, Stojić-Vukanić, Zorica, Pilipović, Ivan, Kosec, Duško, Nacka-Aleksić, Mirjana, Đikić, Jasmina, Arsenović-Ranin, Nevena, Leposavić, Gordana, "Role of ovarian hormones in T-cell homeostasis: From the thymus to the periphery" in Immunobiology, 218, no. 3 (2013):353-367,
https://doi.org/10.1016/j.imbio.2012.05.009 .,
conv_303 .
11
10
11

Glucocorticoid-catecholamine interplay within the composite thymopoietic regulatory network

Pilipović, Ivan; Radojević, Katarina; Perišić, Milica; Leposavić, Gordana

(Blackwell Science Publ, Oxford, 2012)

TY  - JOUR
AU  - Pilipović, Ivan
AU  - Radojević, Katarina
AU  - Perišić, Milica
AU  - Leposavić, Gordana
PY  - 2012
UR  - http://intor.torlakinstitut.com/handle/123456789/347
AB  - This paper highlights the multiple putative thymic and extrathymic points of intersection and interaction between glucocorticoids (GCs) and catecholamines (CAs)-the end-point mediators of the major routes of communication between the brain and the immune system-in the context of intricate thymic T cell-developmental tuning. More specifically, we discuss in detail findings indicating that adrenal GCs can influence thymopoiesis by adjusting directly and/or indirectly (through modulation of pituitary and local ACTH synthesis) not only thymic GC synthesis, in a cell type-specific manner, but also thymic CA bioavailability (via altering CA outflow from sympathetic nerve endings and local CA synthesis), beta and alpha(1)-adrenoceptor (AR) expression, and/or AR-mediated intracellular signal transduction in thymic cells. In addition, this short review points to GC-and CA-sensitive stages along the multistep T cell-developmental journey and the possible effects of altered GC, and consequently CA signaling, on thymopoietic efficiency.
PB  - Blackwell Science Publ, Oxford
T2  - Neuroimmunomodulation in Health and Disease I
T1  - Glucocorticoid-catecholamine interplay within the composite thymopoietic regulatory network
EP  - 41
SP  - 34
VL  - 1261
DO  - 10.1111/j.1749-6632.2012.06623.x
UR  - conv_299
ER  - 
@article{
author = "Pilipović, Ivan and Radojević, Katarina and Perišić, Milica and Leposavić, Gordana",
year = "2012",
abstract = "This paper highlights the multiple putative thymic and extrathymic points of intersection and interaction between glucocorticoids (GCs) and catecholamines (CAs)-the end-point mediators of the major routes of communication between the brain and the immune system-in the context of intricate thymic T cell-developmental tuning. More specifically, we discuss in detail findings indicating that adrenal GCs can influence thymopoiesis by adjusting directly and/or indirectly (through modulation of pituitary and local ACTH synthesis) not only thymic GC synthesis, in a cell type-specific manner, but also thymic CA bioavailability (via altering CA outflow from sympathetic nerve endings and local CA synthesis), beta and alpha(1)-adrenoceptor (AR) expression, and/or AR-mediated intracellular signal transduction in thymic cells. In addition, this short review points to GC-and CA-sensitive stages along the multistep T cell-developmental journey and the possible effects of altered GC, and consequently CA signaling, on thymopoietic efficiency.",
publisher = "Blackwell Science Publ, Oxford",
journal = "Neuroimmunomodulation in Health and Disease I",
title = "Glucocorticoid-catecholamine interplay within the composite thymopoietic regulatory network",
pages = "41-34",
volume = "1261",
doi = "10.1111/j.1749-6632.2012.06623.x",
url = "conv_299"
}
Pilipović, I., Radojević, K., Perišić, M.,& Leposavić, G.. (2012). Glucocorticoid-catecholamine interplay within the composite thymopoietic regulatory network. in Neuroimmunomodulation in Health and Disease I
Blackwell Science Publ, Oxford., 1261, 34-41.
https://doi.org/10.1111/j.1749-6632.2012.06623.x
conv_299
Pilipović I, Radojević K, Perišić M, Leposavić G. Glucocorticoid-catecholamine interplay within the composite thymopoietic regulatory network. in Neuroimmunomodulation in Health and Disease I. 2012;1261:34-41.
doi:10.1111/j.1749-6632.2012.06623.x
conv_299 .
Pilipović, Ivan, Radojević, Katarina, Perišić, Milica, Leposavić, Gordana, "Glucocorticoid-catecholamine interplay within the composite thymopoietic regulatory network" in Neuroimmunomodulation in Health and Disease I, 1261 (2012):34-41,
https://doi.org/10.1111/j.1749-6632.2012.06623.x .,
conv_299 .
8
6
6

Role of gonadal hormones in programming developmental changes in thymopoietic efficiency and sexual diergism in thymopoiesis

Leposavić, Gordana; Perišić, Milica; Pilipović, Ivan

(Humana Press Inc, Totowa, 2012)

TY  - JOUR
AU  - Leposavić, Gordana
AU  - Perišić, Milica
AU  - Pilipović, Ivan
PY  - 2012
UR  - http://intor.torlakinstitut.com/handle/123456789/360
AB  - There is a growing body of evidence indicating the important role of the neonatal steroid milieu in programming sexually diergic changes in thymopoietic efficiency, which in rodents occur around puberty and lead to a substantial phenotypic and functional remodeling of the peripheral T-cell compartment. This in turn leads to an alteration in the susceptibility to infection and various immunologically mediated pathologies. Our laboratory has explored interdependence in the programming and development of the hypothalamo-pituitary-gonadal axis and thymus using experimental model of neonatal androgenization. We have outlined critical points in the complex process of T-cell development depending on neonatal androgen imprinting and the peripheral outcome of these changes and have pointed to underlying mechanisms. Our research has particularly contributed to an understanding of the putative role of changes in catecholamine-mediated communications in the thymopoietic alterations in adult neonatally androgenized rats.
PB  - Humana Press Inc, Totowa
T2  - Immunologic Research
T1  - Role of gonadal hormones in programming developmental changes in thymopoietic efficiency and sexual diergism in thymopoiesis
EP  - 19
IS  - 1-2
SP  - 7
VL  - 52
DO  - 10.1007/s12026-012-8278-6
UR  - conv_288
ER  - 
@article{
author = "Leposavić, Gordana and Perišić, Milica and Pilipović, Ivan",
year = "2012",
abstract = "There is a growing body of evidence indicating the important role of the neonatal steroid milieu in programming sexually diergic changes in thymopoietic efficiency, which in rodents occur around puberty and lead to a substantial phenotypic and functional remodeling of the peripheral T-cell compartment. This in turn leads to an alteration in the susceptibility to infection and various immunologically mediated pathologies. Our laboratory has explored interdependence in the programming and development of the hypothalamo-pituitary-gonadal axis and thymus using experimental model of neonatal androgenization. We have outlined critical points in the complex process of T-cell development depending on neonatal androgen imprinting and the peripheral outcome of these changes and have pointed to underlying mechanisms. Our research has particularly contributed to an understanding of the putative role of changes in catecholamine-mediated communications in the thymopoietic alterations in adult neonatally androgenized rats.",
publisher = "Humana Press Inc, Totowa",
journal = "Immunologic Research",
title = "Role of gonadal hormones in programming developmental changes in thymopoietic efficiency and sexual diergism in thymopoiesis",
pages = "19-7",
number = "1-2",
volume = "52",
doi = "10.1007/s12026-012-8278-6",
url = "conv_288"
}
Leposavić, G., Perišić, M.,& Pilipović, I.. (2012). Role of gonadal hormones in programming developmental changes in thymopoietic efficiency and sexual diergism in thymopoiesis. in Immunologic Research
Humana Press Inc, Totowa., 52(1-2), 7-19.
https://doi.org/10.1007/s12026-012-8278-6
conv_288
Leposavić G, Perišić M, Pilipović I. Role of gonadal hormones in programming developmental changes in thymopoietic efficiency and sexual diergism in thymopoiesis. in Immunologic Research. 2012;52(1-2):7-19.
doi:10.1007/s12026-012-8278-6
conv_288 .
Leposavić, Gordana, Perišić, Milica, Pilipović, Ivan, "Role of gonadal hormones in programming developmental changes in thymopoietic efficiency and sexual diergism in thymopoiesis" in Immunologic Research, 52, no. 1-2 (2012):7-19,
https://doi.org/10.1007/s12026-012-8278-6 .,
conv_288 .
7
6
7

Strain differences in concanavalin a-induced paw edema in the rat: Involvement of histamine H1 and H2 receptors

Kuštrimović, Nataša; Mitić, Katarina; Dimitrijević, Mirjana; Vujić, Vesna; Kovačević-Jovanović, Vesna; Miletić, Tatjana; Stanojević, Stanislava

(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2011)

TY  - JOUR
AU  - Kuštrimović, Nataša
AU  - Mitić, Katarina
AU  - Dimitrijević, Mirjana
AU  - Vujić, Vesna
AU  - Kovačević-Jovanović, Vesna
AU  - Miletić, Tatjana
AU  - Stanojević, Stanislava
PY  - 2011
UR  - http://intor.torlakinstitut.com/handle/123456789/326
AB  - The present study tests the hypothesis that the difference in the intensity of paw edema found between the Dark Agouti (DA) and Albino Oxford (AO) rat strains originates from the distinct participation of histamine, serotonin and their corresponding receptors in Concanavalin A (Con A)-induced inflammation. DA and AO male rats were intraplantarly injected with specific receptor antagonists prior to Con A, and the intensity of inflammation was determined by measuring the paw diameter. Our results have showed that histamine H1 and H2 receptor antagonists reduced the Con A-induced paw edema in DA rats, while serotonin 5HT3 receptor antagonist diminished the inflammation in both DA and AO rat strains. The calcium channel blocker did not change Con A-induced inflammation. Strain differences in the intensity and kinetics of inflammation observed between the DA and AO rats are most likely defined by the diversity of mediators released and their receptors activated upon Con A injection.
AB  - Testirana je hipoteza da razlike u intenzitetu inflamatornog edema šape indukovanog konkanavalinom A u pacova Dark Agouti (DA) i Albino Oxford (AO) soja potiču od različitog doprinosa histamina i serotonina i njihovih odgovarajućih receptora. Mužjaci pacova DA i AO soja su intraplantarno tretirani antagonistima specifičnih receptora pre izazivanja inflamacije konkanavalinom A i intenzitet inflamacije je praćen merenjem dijametra šape. Naši rezultati su ukazali da antagonisti histaminskih H1 i H2 receptora smanjuju edem šape indukovan konkanavalinom A u DA pacova, dok antagonist serotoninskih 5HT3 receptora smanjuje edem šape u oba soja pacova. Blokator kalcijumskih kanala ne utiče na inflamaciju izazvanu konkanavalinom A. Razlike u intenzitetu i kinetici inflamatornog odgovora indukovanog konkanavalinom A između DA i AO sojeva su najverovatnije posledica razlika u oslobođ enim medijatorima i aktivaciji odgovarajućih receptora nakon injekcije konkanavalina A.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta veterinaria - Beograd
T1  - Strain differences in concanavalin a-induced paw edema in the rat: Involvement of histamine H1 and H2 receptors
T1  - Razlike u edemu šape pacova indukovanom konkanavalinom a u zavisnosti od soja - uticaj histaminskih H1 i H2 receptora
EP  - 132
IS  - 2-3
SP  - 119
VL  - 61
DO  - 10.2298/AVB1103119K
UR  - conv_58
ER  - 
@article{
author = "Kuštrimović, Nataša and Mitić, Katarina and Dimitrijević, Mirjana and Vujić, Vesna and Kovačević-Jovanović, Vesna and Miletić, Tatjana and Stanojević, Stanislava",
year = "2011",
abstract = "The present study tests the hypothesis that the difference in the intensity of paw edema found between the Dark Agouti (DA) and Albino Oxford (AO) rat strains originates from the distinct participation of histamine, serotonin and their corresponding receptors in Concanavalin A (Con A)-induced inflammation. DA and AO male rats were intraplantarly injected with specific receptor antagonists prior to Con A, and the intensity of inflammation was determined by measuring the paw diameter. Our results have showed that histamine H1 and H2 receptor antagonists reduced the Con A-induced paw edema in DA rats, while serotonin 5HT3 receptor antagonist diminished the inflammation in both DA and AO rat strains. The calcium channel blocker did not change Con A-induced inflammation. Strain differences in the intensity and kinetics of inflammation observed between the DA and AO rats are most likely defined by the diversity of mediators released and their receptors activated upon Con A injection., Testirana je hipoteza da razlike u intenzitetu inflamatornog edema šape indukovanog konkanavalinom A u pacova Dark Agouti (DA) i Albino Oxford (AO) soja potiču od različitog doprinosa histamina i serotonina i njihovih odgovarajućih receptora. Mužjaci pacova DA i AO soja su intraplantarno tretirani antagonistima specifičnih receptora pre izazivanja inflamacije konkanavalinom A i intenzitet inflamacije je praćen merenjem dijametra šape. Naši rezultati su ukazali da antagonisti histaminskih H1 i H2 receptora smanjuju edem šape indukovan konkanavalinom A u DA pacova, dok antagonist serotoninskih 5HT3 receptora smanjuje edem šape u oba soja pacova. Blokator kalcijumskih kanala ne utiče na inflamaciju izazvanu konkanavalinom A. Razlike u intenzitetu i kinetici inflamatornog odgovora indukovanog konkanavalinom A između DA i AO sojeva su najverovatnije posledica razlika u oslobođ enim medijatorima i aktivaciji odgovarajućih receptora nakon injekcije konkanavalina A.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta veterinaria - Beograd",
title = "Strain differences in concanavalin a-induced paw edema in the rat: Involvement of histamine H1 and H2 receptors, Razlike u edemu šape pacova indukovanom konkanavalinom a u zavisnosti od soja - uticaj histaminskih H1 i H2 receptora",
pages = "132-119",
number = "2-3",
volume = "61",
doi = "10.2298/AVB1103119K",
url = "conv_58"
}
Kuštrimović, N., Mitić, K., Dimitrijević, M., Vujić, V., Kovačević-Jovanović, V., Miletić, T.,& Stanojević, S.. (2011). Strain differences in concanavalin a-induced paw edema in the rat: Involvement of histamine H1 and H2 receptors. in Acta veterinaria - Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 61(2-3), 119-132.
https://doi.org/10.2298/AVB1103119K
conv_58
Kuštrimović N, Mitić K, Dimitrijević M, Vujić V, Kovačević-Jovanović V, Miletić T, Stanojević S. Strain differences in concanavalin a-induced paw edema in the rat: Involvement of histamine H1 and H2 receptors. in Acta veterinaria - Beograd. 2011;61(2-3):119-132.
doi:10.2298/AVB1103119K
conv_58 .
Kuštrimović, Nataša, Mitić, Katarina, Dimitrijević, Mirjana, Vujić, Vesna, Kovačević-Jovanović, Vesna, Miletić, Tatjana, Stanojević, Stanislava, "Strain differences in concanavalin a-induced paw edema in the rat: Involvement of histamine H1 and H2 receptors" in Acta veterinaria - Beograd, 61, no. 2-3 (2011):119-132,
https://doi.org/10.2298/AVB1103119K .,
conv_58 .
1
1
1

Cellular and Nerve Fibre Catecholaminergic Thymic Network: Steroid Hormone Dependent Activity

Leposavić, Gordana; Pilipović, Ivan; Perišić, Milica

(Czech Academy of Sciences, Institute of Physiology, 2011)

TY  - JOUR
AU  - Leposavić, Gordana
AU  - Pilipović, Ivan
AU  - Perišić, Milica
PY  - 2011
UR  - http://intor.torlakinstitut.com/handle/123456789/317
AB  - The thymus plays a critical role in establishing and maintaining the peripheral T-cell pool. It does so by providing a microenvironment within which T-cell precursors differentiate and undergo selection processes to create a functional population of major histocompatibility complex-restricted, self-tolerant T cells. These cells are central to adaptive immunity. Thymic T-cell development is influenced by locally produced soluble factors and cell-to-cell interactions, as well as by sympathetic noradrenergic and endocrine system signalling. Thymic lymphoid and non-lymphoid cells have been shown not only to express beta- and alpha(1)-adrenoceptors (ARs), but also to synthesize catecholamines (CAs). Thus, it is suggested that CAs influence T-cell development via both neurocrine/endocrine and autocrine/paracrine action, and that they serve as immunotransmitters between thymocytes and nerves. CAs acting at multiple sites along the thymocyte developmental route affect T-cell generation not only numerically, but also qualitatively. Thymic CA level and synthesis, as well as AR expression exhibit sex steroid-mediated sexual dimorphism. Moreover, the influence of CAs on T-cell development exhibits glucocorticoid-dependent plasticity. This review summarizes recent findings in this field and our current understanding of complex and multifaceted neuroendocrine-immune communications at thymic level.
PB  - Czech Academy of Sciences, Institute of Physiology
T2  - Physiological Research
T1  - Cellular and Nerve Fibre Catecholaminergic Thymic Network: Steroid Hormone Dependent Activity
EP  - S82
IS  - SUPPL.1
SP  - S71
VL  - 60
DO  - 10.33549/physiolres.932175
UR  - conv_529
ER  - 
@article{
author = "Leposavić, Gordana and Pilipović, Ivan and Perišić, Milica",
year = "2011",
abstract = "The thymus plays a critical role in establishing and maintaining the peripheral T-cell pool. It does so by providing a microenvironment within which T-cell precursors differentiate and undergo selection processes to create a functional population of major histocompatibility complex-restricted, self-tolerant T cells. These cells are central to adaptive immunity. Thymic T-cell development is influenced by locally produced soluble factors and cell-to-cell interactions, as well as by sympathetic noradrenergic and endocrine system signalling. Thymic lymphoid and non-lymphoid cells have been shown not only to express beta- and alpha(1)-adrenoceptors (ARs), but also to synthesize catecholamines (CAs). Thus, it is suggested that CAs influence T-cell development via both neurocrine/endocrine and autocrine/paracrine action, and that they serve as immunotransmitters between thymocytes and nerves. CAs acting at multiple sites along the thymocyte developmental route affect T-cell generation not only numerically, but also qualitatively. Thymic CA level and synthesis, as well as AR expression exhibit sex steroid-mediated sexual dimorphism. Moreover, the influence of CAs on T-cell development exhibits glucocorticoid-dependent plasticity. This review summarizes recent findings in this field and our current understanding of complex and multifaceted neuroendocrine-immune communications at thymic level.",
publisher = "Czech Academy of Sciences, Institute of Physiology",
journal = "Physiological Research",
title = "Cellular and Nerve Fibre Catecholaminergic Thymic Network: Steroid Hormone Dependent Activity",
pages = "S82-S71",
number = "SUPPL.1",
volume = "60",
doi = "10.33549/physiolres.932175",
url = "conv_529"
}
Leposavić, G., Pilipović, I.,& Perišić, M.. (2011). Cellular and Nerve Fibre Catecholaminergic Thymic Network: Steroid Hormone Dependent Activity. in Physiological Research
Czech Academy of Sciences, Institute of Physiology., 60(SUPPL.1), S71-S82.
https://doi.org/10.33549/physiolres.932175
conv_529
Leposavić G, Pilipović I, Perišić M. Cellular and Nerve Fibre Catecholaminergic Thymic Network: Steroid Hormone Dependent Activity. in Physiological Research. 2011;60(SUPPL.1):S71-S82.
doi:10.33549/physiolres.932175
conv_529 .
Leposavić, Gordana, Pilipović, Ivan, Perišić, Milica, "Cellular and Nerve Fibre Catecholaminergic Thymic Network: Steroid Hormone Dependent Activity" in Physiological Research, 60, no. SUPPL.1 (2011):S71-S82,
https://doi.org/10.33549/physiolres.932175 .,
conv_529 .
17
15
16

Age-Associated Remodeling of Neural and Nonneural Thymic Catecholaminergic Network Affects Thymopoietic Productivity

Leposavić, Gordana; Pilipović, Ivan; Perišić, Milica

(Karger, Basel, 2011)

TY  - JOUR
AU  - Leposavić, Gordana
AU  - Pilipović, Ivan
AU  - Perišić, Milica
PY  - 2011
UR  - http://intor.torlakinstitut.com/handle/123456789/328
AB  - Ageing is associated with a progressive decline in thymic cytoarchitecture followed by a less efficient T cell development and decreased emigration of naive T cells to the periphery. These thymic changes are linked to increased morbidity and mortality from infectious, malignant and autoimmune diseases in old age. Therefore, it is of paramount importance to understand the thymic homeostatic processes across the life span, as well as to identify factors and elucidate mechanisms driving or contributing to the thymic involution. Catecholamines (CAs) derived from sympathetic nerves and produced locally by thymic cells represent an important component of the thymic microenvironment. In young rats, they provide a subtle tonic suppressive influence on T cell development acting via beta(2)- and alpha(1)-adrenoceptors (ARs) expressed on thymic nonlymphoid cells and thymocytes. In the face of thymic involution, a progressive increase in the thymic noradrenaline level, reflecting a rise in the density of noradrenergic nerve fibers and CA-synthesizing cells, occurs. In addition, the density of beta(2)- and alpha(1)-AR-expressing thymic nonlymphoid cells and the alpha(1)-AR thymocyte surface density also exhibit a pronounced increase with age. The data obtained from studies investigating effects of AR blockade on T cell development indicated that age-related changes in CA-mediated thymic communications, certainly those involving alpha(1)-ARs, may contribute to diminished thymopoietic efficiency in the elderly. Having in mind thymic plasticity in the course of ageing, and broadening possibilities for pharmacological modulation of CA signaling, we here present and discuss the progress in research related to a role of CAs in thymic homeostasis and age-related decay in the thymic naive T cell output. Copyright (C) 2011 S. Karger AG, Basel
PB  - Karger, Basel
T2  - Neuroimmunomodulation
T1  - Age-Associated Remodeling of Neural and Nonneural Thymic Catecholaminergic Network Affects Thymopoietic Productivity
EP  - 308
IS  - 5
SP  - 290
VL  - 18
DO  - 10.1159/000329499
UR  - conv_271
ER  - 
@article{
author = "Leposavić, Gordana and Pilipović, Ivan and Perišić, Milica",
year = "2011",
abstract = "Ageing is associated with a progressive decline in thymic cytoarchitecture followed by a less efficient T cell development and decreased emigration of naive T cells to the periphery. These thymic changes are linked to increased morbidity and mortality from infectious, malignant and autoimmune diseases in old age. Therefore, it is of paramount importance to understand the thymic homeostatic processes across the life span, as well as to identify factors and elucidate mechanisms driving or contributing to the thymic involution. Catecholamines (CAs) derived from sympathetic nerves and produced locally by thymic cells represent an important component of the thymic microenvironment. In young rats, they provide a subtle tonic suppressive influence on T cell development acting via beta(2)- and alpha(1)-adrenoceptors (ARs) expressed on thymic nonlymphoid cells and thymocytes. In the face of thymic involution, a progressive increase in the thymic noradrenaline level, reflecting a rise in the density of noradrenergic nerve fibers and CA-synthesizing cells, occurs. In addition, the density of beta(2)- and alpha(1)-AR-expressing thymic nonlymphoid cells and the alpha(1)-AR thymocyte surface density also exhibit a pronounced increase with age. The data obtained from studies investigating effects of AR blockade on T cell development indicated that age-related changes in CA-mediated thymic communications, certainly those involving alpha(1)-ARs, may contribute to diminished thymopoietic efficiency in the elderly. Having in mind thymic plasticity in the course of ageing, and broadening possibilities for pharmacological modulation of CA signaling, we here present and discuss the progress in research related to a role of CAs in thymic homeostasis and age-related decay in the thymic naive T cell output. Copyright (C) 2011 S. Karger AG, Basel",
publisher = "Karger, Basel",
journal = "Neuroimmunomodulation",
title = "Age-Associated Remodeling of Neural and Nonneural Thymic Catecholaminergic Network Affects Thymopoietic Productivity",
pages = "308-290",
number = "5",
volume = "18",
doi = "10.1159/000329499",
url = "conv_271"
}
Leposavić, G., Pilipović, I.,& Perišić, M.. (2011). Age-Associated Remodeling of Neural and Nonneural Thymic Catecholaminergic Network Affects Thymopoietic Productivity. in Neuroimmunomodulation
Karger, Basel., 18(5), 290-308.
https://doi.org/10.1159/000329499
conv_271
Leposavić G, Pilipović I, Perišić M. Age-Associated Remodeling of Neural and Nonneural Thymic Catecholaminergic Network Affects Thymopoietic Productivity. in Neuroimmunomodulation. 2011;18(5):290-308.
doi:10.1159/000329499
conv_271 .
Leposavić, Gordana, Pilipović, Ivan, Perišić, Milica, "Age-Associated Remodeling of Neural and Nonneural Thymic Catecholaminergic Network Affects Thymopoietic Productivity" in Neuroimmunomodulation, 18, no. 5 (2011):290-308,
https://doi.org/10.1159/000329499 .,
conv_271 .
9
9
11

Modulation of granulocyte functions by peptide YY in the rat: Age-related differences in Y receptors expression and plasma dipeptidyl peptidase 4 activity

Dimitrijević, Mirjana; Stanojević, Stanislava; Mitić, Katarina; Kuštrimović, Nataša; Vujić, Vesna; Miletić, Tatjana; Kovačević-Jovanović, Vesna

(Elsevier Science Bv, Amsterdam, 2010)

TY  - JOUR
AU  - Dimitrijević, Mirjana
AU  - Stanojević, Stanislava
AU  - Mitić, Katarina
AU  - Kuštrimović, Nataša
AU  - Vujić, Vesna
AU  - Miletić, Tatjana
AU  - Kovačević-Jovanović, Vesna
PY  - 2010
UR  - http://intor.torlakinstitut.com/handle/123456789/298
AB  - It has been acknowledged that aging exerts detrimental effects on cells of the innate immune system and that neuropeptides, including neuropeptide Y (NPY) and NPY-related peptides fine-tune the activity of these cells through a receptor specific mechanism. The present study investigated the age-dependent potential of peptide YY (PYY) to modulate different granulocyte functions. The PYY reduced the carrageenan-elicited granulocyte accumulation into the air-pouch of aged (24 months) rats, and markedly decreased the phagocytosis of zymosan, as well as the H(2)O(2) production, when applied in vivo (20 mu g/air-pouch). The anti-inflammatory effect of PYY was less prominent in adult (8 months) and young (3 months) rats. However, the proportions of granulocytes expressing Y1, Y2 and Y5 receptor subtypes were significantly lower in both aged and young rats when compared to adult rats. Furthermore, the aging was found to be associated with the diminished dipeptidyl peptidase 4 (DP4, an enzyme converting the NPY and PYY to Y2/Y5 receptor selective agonists) activity in plasma. In conclusion, the diverse age-related anti-inflammatory effect of PYY in rats originates from different expression levels of Y1, Y2, and Y5 receptor subtypes in addition to different plasma DP4 activity. (C) 2009 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - Regulatory Peptides
T1  - Modulation of granulocyte functions by peptide YY in the rat: Age-related differences in Y receptors expression and plasma dipeptidyl peptidase 4 activity
EP  - 109
IS  - 1-3
SP  - 100
VL  - 159
DO  - 10.1016/j.regpep.2009.11.002
UR  - conv_245
ER  - 
@article{
author = "Dimitrijević, Mirjana and Stanojević, Stanislava and Mitić, Katarina and Kuštrimović, Nataša and Vujić, Vesna and Miletić, Tatjana and Kovačević-Jovanović, Vesna",
year = "2010",
abstract = "It has been acknowledged that aging exerts detrimental effects on cells of the innate immune system and that neuropeptides, including neuropeptide Y (NPY) and NPY-related peptides fine-tune the activity of these cells through a receptor specific mechanism. The present study investigated the age-dependent potential of peptide YY (PYY) to modulate different granulocyte functions. The PYY reduced the carrageenan-elicited granulocyte accumulation into the air-pouch of aged (24 months) rats, and markedly decreased the phagocytosis of zymosan, as well as the H(2)O(2) production, when applied in vivo (20 mu g/air-pouch). The anti-inflammatory effect of PYY was less prominent in adult (8 months) and young (3 months) rats. However, the proportions of granulocytes expressing Y1, Y2 and Y5 receptor subtypes were significantly lower in both aged and young rats when compared to adult rats. Furthermore, the aging was found to be associated with the diminished dipeptidyl peptidase 4 (DP4, an enzyme converting the NPY and PYY to Y2/Y5 receptor selective agonists) activity in plasma. In conclusion, the diverse age-related anti-inflammatory effect of PYY in rats originates from different expression levels of Y1, Y2, and Y5 receptor subtypes in addition to different plasma DP4 activity. (C) 2009 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Regulatory Peptides",
title = "Modulation of granulocyte functions by peptide YY in the rat: Age-related differences in Y receptors expression and plasma dipeptidyl peptidase 4 activity",
pages = "109-100",
number = "1-3",
volume = "159",
doi = "10.1016/j.regpep.2009.11.002",
url = "conv_245"
}
Dimitrijević, M., Stanojević, S., Mitić, K., Kuštrimović, N., Vujić, V., Miletić, T.,& Kovačević-Jovanović, V.. (2010). Modulation of granulocyte functions by peptide YY in the rat: Age-related differences in Y receptors expression and plasma dipeptidyl peptidase 4 activity. in Regulatory Peptides
Elsevier Science Bv, Amsterdam., 159(1-3), 100-109.
https://doi.org/10.1016/j.regpep.2009.11.002
conv_245
Dimitrijević M, Stanojević S, Mitić K, Kuštrimović N, Vujić V, Miletić T, Kovačević-Jovanović V. Modulation of granulocyte functions by peptide YY in the rat: Age-related differences in Y receptors expression and plasma dipeptidyl peptidase 4 activity. in Regulatory Peptides. 2010;159(1-3):100-109.
doi:10.1016/j.regpep.2009.11.002
conv_245 .
Dimitrijević, Mirjana, Stanojević, Stanislava, Mitić, Katarina, Kuštrimović, Nataša, Vujić, Vesna, Miletić, Tatjana, Kovačević-Jovanović, Vesna, "Modulation of granulocyte functions by peptide YY in the rat: Age-related differences in Y receptors expression and plasma dipeptidyl peptidase 4 activity" in Regulatory Peptides, 159, no. 1-3 (2010):100-109,
https://doi.org/10.1016/j.regpep.2009.11.002 .,
conv_245 .
16
14
16

Somatostatin-14 induces different changes in the thymus of peripubertal and young adult rats

Rakin, Ana; Petrović-Đergović, Danica M.; Todorović, Vera; Živković, Irena; Đikić, Dragoslava; Miljković, Biljana; Janković, I.; Mićić, Mileva

(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2010)

TY  - JOUR
AU  - Rakin, Ana
AU  - Petrović-Đergović, Danica M.
AU  - Todorović, Vera
AU  - Živković, Irena
AU  - Đikić, Dragoslava
AU  - Miljković, Biljana
AU  - Janković, I.
AU  - Mićić, Mileva
PY  - 2010
UR  - http://intor.torlakinstitut.com/handle/123456789/310
AB  - Bearing in mind the role of somatostatin in thymus functions, and changes of somatostatin level and expression of its receptors during postnatal life, the aim of this study was to investigate whether centrally applied SRIH-14 induces different changes in the thymic compartments and thymocyte profile in peripubertal and young adult rats. To this end, 4- and 10-week-old male AO rats were cannulated and treated intracerebroventriculary with three doses of SRIH-14, applied every other day. In peripubertal rats, SRIH-14 decreases thymic relative weight and volume, as well as the volume of thymic compartments, especially of deep cortex, as a result of thymocytes loss by apoptosis. Also, SRIH-14 increases the percentage of immature thymocytes preceding the DPTCRαβlow cells (DNTCRαβ-/low, DPTCRαβ-, SPCD8TCRαβ-/low and SPCD4TCRαβ-/low), decreases the percentages of DPTCRαβlow and DPTCRαβhi cells, while the relative proportion of CD4+/CD8+TCRαβhi cells remained unaltered. In young adult rats, SRIH-14 does not lead to changes in relative thymus weight, although decreases the thymic cortex cellularity and volume. In addition, decreases the percentage of DPTCRαβ-/hi cells and increases the percentages of cells within DNTCRαβhi and both SP subpopulations, but much more of the CD8+TCRαβhi subset. These results suggest that the effects of SRIH-14 on the thymus and thymocytes subpopulations are age-dependent.
AB  - Sa obzirom da literaturni podaci ukazuju da somatostatin ima uticaja na funkciju timusa, kao i da se tokom postnatalnog života menja nivo somatostatina i ekspresija njegovih receptora u timusu, cilj ovog rada je bio da se ispita da li SRIH- 14 davan intracerebroventrikularno u prepubertalnih i mladih odraslih pacova, dovodi do različitih promena u zonama timusa i profilu timocitnih subsetova. Mužjacima pacova AO soja, starim 4 i 10 nedelja, ugrađene su kanile u treću moždanu komoru i oni su tretirani somatostatinom, ukupno tri doze, ubrizgane svakog drugog dana. U prepubertalnih pacova tretman somatostatinom dovodi do smanjenja relativne mase i zapremine timusa, kao i zapremine timusnih zona, naročito dubokog korteksa, što je bila posledica gubitka timocita apoptozom. Takođe, SRIH-14 je doveo do povećanja procenta timocita nezrelog fenotipa (DNTCRαβ-/low, DPTCRαβ-, SPCD8TCRαβ-/low i SPCD4TCRαβ-/low) prekusora DPTCRαβlow subpopulacije, smanjenja procenta DPTCRαβlow i DPTCRαβhi subsetova, dok je relativni odnos najzrelijih CD4TCRαβhi i CD8TCRαβhi timocita ostao neizmenjen. U mladih adulta primena somatostatina, iako dovodi do smanjena zapremine i celularosti korteksa ne dovodi do promena u relativnoj masi timusa. Procenat DPTCRαβ-/hi timocita je bio smanjen, dok je procentualno učešće DNTCRαβhi timocita i obe jednostruko pozitivne subpopulacije (CD4TCRαβhi i CD8TCRαβhi, više CD8TCRαβhi) u ukupnom broju timocita bilo povećano. Navedeni rezultati ukazuju da SRIH-14 različito utiče na morfologiju timusa i na subpopulacije timocita pacova u zavisnosti od uzrasta tretiranih životinja.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta veterinaria - Beograd
T1  - Somatostatin-14 induces different changes in the thymus of peripubertal and young adult rats
T1  - Somatostatin-14 izaziva različite promene u timusima prepubertalnih i mladih odraslih pacova
EP  - 354
IS  - 4
SP  - 339
VL  - 60
DO  - 10.2298/AVB1004339R
UR  - conv_57
ER  - 
@article{
author = "Rakin, Ana and Petrović-Đergović, Danica M. and Todorović, Vera and Živković, Irena and Đikić, Dragoslava and Miljković, Biljana and Janković, I. and Mićić, Mileva",
year = "2010",
abstract = "Bearing in mind the role of somatostatin in thymus functions, and changes of somatostatin level and expression of its receptors during postnatal life, the aim of this study was to investigate whether centrally applied SRIH-14 induces different changes in the thymic compartments and thymocyte profile in peripubertal and young adult rats. To this end, 4- and 10-week-old male AO rats were cannulated and treated intracerebroventriculary with three doses of SRIH-14, applied every other day. In peripubertal rats, SRIH-14 decreases thymic relative weight and volume, as well as the volume of thymic compartments, especially of deep cortex, as a result of thymocytes loss by apoptosis. Also, SRIH-14 increases the percentage of immature thymocytes preceding the DPTCRαβlow cells (DNTCRαβ-/low, DPTCRαβ-, SPCD8TCRαβ-/low and SPCD4TCRαβ-/low), decreases the percentages of DPTCRαβlow and DPTCRαβhi cells, while the relative proportion of CD4+/CD8+TCRαβhi cells remained unaltered. In young adult rats, SRIH-14 does not lead to changes in relative thymus weight, although decreases the thymic cortex cellularity and volume. In addition, decreases the percentage of DPTCRαβ-/hi cells and increases the percentages of cells within DNTCRαβhi and both SP subpopulations, but much more of the CD8+TCRαβhi subset. These results suggest that the effects of SRIH-14 on the thymus and thymocytes subpopulations are age-dependent., Sa obzirom da literaturni podaci ukazuju da somatostatin ima uticaja na funkciju timusa, kao i da se tokom postnatalnog života menja nivo somatostatina i ekspresija njegovih receptora u timusu, cilj ovog rada je bio da se ispita da li SRIH- 14 davan intracerebroventrikularno u prepubertalnih i mladih odraslih pacova, dovodi do različitih promena u zonama timusa i profilu timocitnih subsetova. Mužjacima pacova AO soja, starim 4 i 10 nedelja, ugrađene su kanile u treću moždanu komoru i oni su tretirani somatostatinom, ukupno tri doze, ubrizgane svakog drugog dana. U prepubertalnih pacova tretman somatostatinom dovodi do smanjenja relativne mase i zapremine timusa, kao i zapremine timusnih zona, naročito dubokog korteksa, što je bila posledica gubitka timocita apoptozom. Takođe, SRIH-14 je doveo do povećanja procenta timocita nezrelog fenotipa (DNTCRαβ-/low, DPTCRαβ-, SPCD8TCRαβ-/low i SPCD4TCRαβ-/low) prekusora DPTCRαβlow subpopulacije, smanjenja procenta DPTCRαβlow i DPTCRαβhi subsetova, dok je relativni odnos najzrelijih CD4TCRαβhi i CD8TCRαβhi timocita ostao neizmenjen. U mladih adulta primena somatostatina, iako dovodi do smanjena zapremine i celularosti korteksa ne dovodi do promena u relativnoj masi timusa. Procenat DPTCRαβ-/hi timocita je bio smanjen, dok je procentualno učešće DNTCRαβhi timocita i obe jednostruko pozitivne subpopulacije (CD4TCRαβhi i CD8TCRαβhi, više CD8TCRαβhi) u ukupnom broju timocita bilo povećano. Navedeni rezultati ukazuju da SRIH-14 različito utiče na morfologiju timusa i na subpopulacije timocita pacova u zavisnosti od uzrasta tretiranih životinja.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta veterinaria - Beograd",
title = "Somatostatin-14 induces different changes in the thymus of peripubertal and young adult rats, Somatostatin-14 izaziva različite promene u timusima prepubertalnih i mladih odraslih pacova",
pages = "354-339",
number = "4",
volume = "60",
doi = "10.2298/AVB1004339R",
url = "conv_57"
}
Rakin, A., Petrović-Đergović, D. M., Todorović, V., Živković, I., Đikić, D., Miljković, B., Janković, I.,& Mićić, M.. (2010). Somatostatin-14 induces different changes in the thymus of peripubertal and young adult rats. in Acta veterinaria - Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 60(4), 339-354.
https://doi.org/10.2298/AVB1004339R
conv_57
Rakin A, Petrović-Đergović DM, Todorović V, Živković I, Đikić D, Miljković B, Janković I, Mićić M. Somatostatin-14 induces different changes in the thymus of peripubertal and young adult rats. in Acta veterinaria - Beograd. 2010;60(4):339-354.
doi:10.2298/AVB1004339R
conv_57 .
Rakin, Ana, Petrović-Đergović, Danica M., Todorović, Vera, Živković, Irena, Đikić, Dragoslava, Miljković, Biljana, Janković, I., Mićić, Mileva, "Somatostatin-14 induces different changes in the thymus of peripubertal and young adult rats" in Acta veterinaria - Beograd, 60, no. 4 (2010):339-354,
https://doi.org/10.2298/AVB1004339R .,
conv_57 .

Role of ovarian hormones in age-associated thymic involution revisited

Perišić, Milica; Arsenović-Ranin, Nevena; Pilipović, Ivan; Kosec, Duško; Pešić, Vesna; Radojević, Katarina; Leposavić, Gordana

(Elsevier Gmbh, Munich, 2010)

TY  - JOUR
AU  - Perišić, Milica
AU  - Arsenović-Ranin, Nevena
AU  - Pilipović, Ivan
AU  - Kosec, Duško
AU  - Pešić, Vesna
AU  - Radojević, Katarina
AU  - Leposavić, Gordana
PY  - 2010
UR  - http://intor.torlakinstitut.com/handle/123456789/304
AB  - A commonly held view that ovarian hormones are causally involved in age-associated thymic involution has been recently challenged. In particular, their relevance in the progression of thymic involution has been disputed. To reassess this issue 10-month-old rats with well advanced thymic involutive changes were ovariectomized (Ovx), and after 1 month thymic cellularity, thymocyte development and levels of recent thymic emigrants (RTEs) were examined in peripheral blood and spleen. In addition, the distribution of major conventional and regulatory T-cell subsets was analyzed in the same peripheral lymphocyte compartments. Ovariectomy increased thymic weight and cellularity above the levels in both 10-month-old and age-matched controls indicating that ovarian hormone ablation not only prevented further progression of thymic involution, hut also reversed it. The increased thymic cellularity was accompanied by altered thymocyte differentiation/maturation culminating in increased thymic output of nave T cells as indicated by elevated levels of both CD4 + and CD8 + RTEs in peripheral blood and spleen. The changes in T-cell development produced: (i) a disproportional increase in cellularity across thymocyte subsets, so that relative proportions of cells at all maturational stages preceding the CD4 + CD8 + T cell receptor (TCR)alpha beta(low) stage were reduced; the relative numbers of CD4 + CD8 + TCR alpha beta(low) cells entering positive selection and their immediate CD4 + CD8 + TCR alpha beta(high) descendents were increased, while those of the most mature CD4 + CD8 and CD4 CD8 + TCR alpha beta(high) cells remained unaltered; (ii) enhanced cell proliferation across all thymocyte subsets and (iii) reduced apoptosis of cells within the CD4 + CD8 + thymocyte subset. The augmented thymic output of naive T cells in Ovx rats most likely reflected an early disinhibition of thymocyte development followed by increased positive/reduced negative selection, at least partly, due to raised thymocyte surface Thy-1 expression. The greater number of CD4 + CD25 + Foxp3 + cells in both thymus and peripheral blood suggested augmented thymic production of these cells. In addition, an increased CD4 + /CD8 + cell ratio was found in the spleen of Ovx rats. Thus, ovarian hormone ablation led not only to increased diversity of the T-cell repertoire, but also to a new balance among distinct T-cell subsets in the periphery. (C) 2009 Elsevier GmbH. All rights reserved.
PB  - Elsevier Gmbh, Munich
T2  - Immunobiology
T1  - Role of ovarian hormones in age-associated thymic involution revisited
EP  - 293
IS  - 4
SP  - 275
VL  - 215
DO  - 10.1016/j.imbio.2009.06.012
UR  - conv_252
ER  - 
@article{
author = "Perišić, Milica and Arsenović-Ranin, Nevena and Pilipović, Ivan and Kosec, Duško and Pešić, Vesna and Radojević, Katarina and Leposavić, Gordana",
year = "2010",
abstract = "A commonly held view that ovarian hormones are causally involved in age-associated thymic involution has been recently challenged. In particular, their relevance in the progression of thymic involution has been disputed. To reassess this issue 10-month-old rats with well advanced thymic involutive changes were ovariectomized (Ovx), and after 1 month thymic cellularity, thymocyte development and levels of recent thymic emigrants (RTEs) were examined in peripheral blood and spleen. In addition, the distribution of major conventional and regulatory T-cell subsets was analyzed in the same peripheral lymphocyte compartments. Ovariectomy increased thymic weight and cellularity above the levels in both 10-month-old and age-matched controls indicating that ovarian hormone ablation not only prevented further progression of thymic involution, hut also reversed it. The increased thymic cellularity was accompanied by altered thymocyte differentiation/maturation culminating in increased thymic output of nave T cells as indicated by elevated levels of both CD4 + and CD8 + RTEs in peripheral blood and spleen. The changes in T-cell development produced: (i) a disproportional increase in cellularity across thymocyte subsets, so that relative proportions of cells at all maturational stages preceding the CD4 + CD8 + T cell receptor (TCR)alpha beta(low) stage were reduced; the relative numbers of CD4 + CD8 + TCR alpha beta(low) cells entering positive selection and their immediate CD4 + CD8 + TCR alpha beta(high) descendents were increased, while those of the most mature CD4 + CD8 and CD4 CD8 + TCR alpha beta(high) cells remained unaltered; (ii) enhanced cell proliferation across all thymocyte subsets and (iii) reduced apoptosis of cells within the CD4 + CD8 + thymocyte subset. The augmented thymic output of naive T cells in Ovx rats most likely reflected an early disinhibition of thymocyte development followed by increased positive/reduced negative selection, at least partly, due to raised thymocyte surface Thy-1 expression. The greater number of CD4 + CD25 + Foxp3 + cells in both thymus and peripheral blood suggested augmented thymic production of these cells. In addition, an increased CD4 + /CD8 + cell ratio was found in the spleen of Ovx rats. Thus, ovarian hormone ablation led not only to increased diversity of the T-cell repertoire, but also to a new balance among distinct T-cell subsets in the periphery. (C) 2009 Elsevier GmbH. All rights reserved.",
publisher = "Elsevier Gmbh, Munich",
journal = "Immunobiology",
title = "Role of ovarian hormones in age-associated thymic involution revisited",
pages = "293-275",
number = "4",
volume = "215",
doi = "10.1016/j.imbio.2009.06.012",
url = "conv_252"
}
Perišić, M., Arsenović-Ranin, N., Pilipović, I., Kosec, D., Pešić, V., Radojević, K.,& Leposavić, G.. (2010). Role of ovarian hormones in age-associated thymic involution revisited. in Immunobiology
Elsevier Gmbh, Munich., 215(4), 275-293.
https://doi.org/10.1016/j.imbio.2009.06.012
conv_252
Perišić M, Arsenović-Ranin N, Pilipović I, Kosec D, Pešić V, Radojević K, Leposavić G. Role of ovarian hormones in age-associated thymic involution revisited. in Immunobiology. 2010;215(4):275-293.
doi:10.1016/j.imbio.2009.06.012
conv_252 .
Perišić, Milica, Arsenović-Ranin, Nevena, Pilipović, Ivan, Kosec, Duško, Pešić, Vesna, Radojević, Katarina, Leposavić, Gordana, "Role of ovarian hormones in age-associated thymic involution revisited" in Immunobiology, 215, no. 4 (2010):275-293,
https://doi.org/10.1016/j.imbio.2009.06.012 .,
conv_252 .
16
17
18

Glucocorticoids, master modulators of the thymic catecholaminergic system?

Pilipović, Ivan; Kosec, Duško; Radojević, Katarina; Perišić, Milica; Pešić, Vesna; Stojić-Vukanić, Zorica; Leposavić, Gordana

(Assoc Bras Divulg Cientifica, Ribeirao Preto, 2010)

TY  - JOUR
AU  - Pilipović, Ivan
AU  - Kosec, Duško
AU  - Radojević, Katarina
AU  - Perišić, Milica
AU  - Pešić, Vesna
AU  - Stojić-Vukanić, Zorica
AU  - Leposavić, Gordana
PY  - 2010
UR  - http://intor.torlakinstitut.com/handle/123456789/303
AB  - There is evidence that the major mediators of stress, i.e., catecholamines and glucocorticoids, play an important role in modulating thymopoiesis and consequently immune responses. Furthermore, there are data suggesting that glucocorticoids influence catecholamine action. Therefore, to assess the putative relevance of glucocorticoid-catecholamine interplay in the modulation of thymopoiesis we analyzed thymocyte differentiation/maturation in non-adrenalectomized and andrenalectomized rats subjected to treatment with propranolol (0.4 mg.100 g body weight(-1).day(-1)) for 4 days. The effects of beta-adrenoceptor blockade on thymopoiesis in non-adrenalectomized rats differed not only quantitatively but also qualitatively from those in adrenalectomized rats. In adrenalectomized rats, besides a more efficient thymopoiesis [judged by a more pronounced increase in the relative proportion of the most mature single-positive TCR alpha beta(high) thymocytes as revealed by two-way ANOVA; for CD4(+)CD8(-)F (1,20) = 10.92, P  lt  0.01; for CD4(-)CD8(+)F (1,20) = 7.47, P  lt  0.05], a skewed thymocyte maturation towards the CD4(-)CD8(+) phenotype, and consequently a diminished CD4(+)CD8(-)/CD4(-)CD8(+) mature TCR alpha beta(high) thymocyte ratio (3.41 +/- 0.21 in non-adrenalectomized rats vs 2.90 +/- 0.31 in adrenalectomized rats, P  lt  0.05) were found. Therefore, we assumed that catecholaminergic modulation of thymopoiesis exhibits a substantial degree of glucocorticoid-dependent plasticity. Given that glucocorticoids, apart from catecholamine synthesis, influence adrenoceptor expression, we also hypothesized that the lack of adrenal glucocorticoids affected not only beta-adrenoceptor- but also alpha-adrenoceptor-mediated modulation of thymopoiesis.
PB  - Assoc Bras Divulg Cientifica, Ribeirao Preto
T2  - Brazilian Journal of Medical and Biological Research
T1  - Glucocorticoids, master modulators of the thymic catecholaminergic system?
EP  - 284
IS  - 3
SP  - 279
VL  - 43
DO  - 10.1590/S0100-879X2010007500005
UR  - conv_250
ER  - 
@article{
author = "Pilipović, Ivan and Kosec, Duško and Radojević, Katarina and Perišić, Milica and Pešić, Vesna and Stojić-Vukanić, Zorica and Leposavić, Gordana",
year = "2010",
abstract = "There is evidence that the major mediators of stress, i.e., catecholamines and glucocorticoids, play an important role in modulating thymopoiesis and consequently immune responses. Furthermore, there are data suggesting that glucocorticoids influence catecholamine action. Therefore, to assess the putative relevance of glucocorticoid-catecholamine interplay in the modulation of thymopoiesis we analyzed thymocyte differentiation/maturation in non-adrenalectomized and andrenalectomized rats subjected to treatment with propranolol (0.4 mg.100 g body weight(-1).day(-1)) for 4 days. The effects of beta-adrenoceptor blockade on thymopoiesis in non-adrenalectomized rats differed not only quantitatively but also qualitatively from those in adrenalectomized rats. In adrenalectomized rats, besides a more efficient thymopoiesis [judged by a more pronounced increase in the relative proportion of the most mature single-positive TCR alpha beta(high) thymocytes as revealed by two-way ANOVA; for CD4(+)CD8(-)F (1,20) = 10.92, P  lt  0.01; for CD4(-)CD8(+)F (1,20) = 7.47, P  lt  0.05], a skewed thymocyte maturation towards the CD4(-)CD8(+) phenotype, and consequently a diminished CD4(+)CD8(-)/CD4(-)CD8(+) mature TCR alpha beta(high) thymocyte ratio (3.41 +/- 0.21 in non-adrenalectomized rats vs 2.90 +/- 0.31 in adrenalectomized rats, P  lt  0.05) were found. Therefore, we assumed that catecholaminergic modulation of thymopoiesis exhibits a substantial degree of glucocorticoid-dependent plasticity. Given that glucocorticoids, apart from catecholamine synthesis, influence adrenoceptor expression, we also hypothesized that the lack of adrenal glucocorticoids affected not only beta-adrenoceptor- but also alpha-adrenoceptor-mediated modulation of thymopoiesis.",
publisher = "Assoc Bras Divulg Cientifica, Ribeirao Preto",
journal = "Brazilian Journal of Medical and Biological Research",
title = "Glucocorticoids, master modulators of the thymic catecholaminergic system?",
pages = "284-279",
number = "3",
volume = "43",
doi = "10.1590/S0100-879X2010007500005",
url = "conv_250"
}
Pilipović, I., Kosec, D., Radojević, K., Perišić, M., Pešić, V., Stojić-Vukanić, Z.,& Leposavić, G.. (2010). Glucocorticoids, master modulators of the thymic catecholaminergic system?. in Brazilian Journal of Medical and Biological Research
Assoc Bras Divulg Cientifica, Ribeirao Preto., 43(3), 279-284.
https://doi.org/10.1590/S0100-879X2010007500005
conv_250
Pilipović I, Kosec D, Radojević K, Perišić M, Pešić V, Stojić-Vukanić Z, Leposavić G. Glucocorticoids, master modulators of the thymic catecholaminergic system?. in Brazilian Journal of Medical and Biological Research. 2010;43(3):279-284.
doi:10.1590/S0100-879X2010007500005
conv_250 .
Pilipović, Ivan, Kosec, Duško, Radojević, Katarina, Perišić, Milica, Pešić, Vesna, Stojić-Vukanić, Zorica, Leposavić, Gordana, "Glucocorticoids, master modulators of the thymic catecholaminergic system?" in Brazilian Journal of Medical and Biological Research, 43, no. 3 (2010):279-284,
https://doi.org/10.1590/S0100-879X2010007500005 .,
conv_250 .
5
5
5

Phenotype changes induced by immunization with encephalitogen affected the functions of peritoneal macrophages in two rat strains with different sensitivity to experimental autoimmune encephalomyelitis (EAE) induction

Mitić, Katarina; Miletić, Tatjana; Kovačević-Jovanović, Vesna; Kuštrimović, Nataša; Kosec, Duško; Dimitrijević, Mirjana; Stanojević, Stanislava

(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2010)

TY  - JOUR
AU  - Mitić, Katarina
AU  - Miletić, Tatjana
AU  - Kovačević-Jovanović, Vesna
AU  - Kuštrimović, Nataša
AU  - Kosec, Duško
AU  - Dimitrijević, Mirjana
AU  - Stanojević, Stanislava
PY  - 2010
UR  - http://intor.torlakinstitut.com/handle/123456789/311
AB  - We have investigated the phenotype of peritoneal cells and the functions of peritoneal macrophages obtained from experimental autoimmune encephalomyelitis (EAE)-susceptible Dark Agouti (DA) and EAE-resistant Albino Oxford (AO) rat strains on days 1, 3 and 7 post immunization with encephalitogen. Resident peritoneal cells from immunized and non-immunized rats of both strains were subjected to flow cytometric analyzes and after adherence were tested for zymosan phagocytosis, hydrogen peroxide (H2O2) and nitric oxide (NO) production. In non-immunized rats, macrophages from the DA rat strain phagocytosed more zymosan but produced less H2O2 than cells from the AO strain, while both strains produced comparable amounts of NO. Immunization increased phagocytosis in DA rats' cells, but decreased both phagocytosis and H2O2 production in cells from AO rats. Overall higher phagocyte ability in DA rats was associated with a significantly larger population of ED1+ cells (macrophages and dendritic cells), in contrast to a more pronounced expression of ED2 antigen (resident macrophages) on cells from AO rats. Immunization also increased the expression of CD11b molecule on non-resident ED2-macrophages of DA, but not of AO rats. The early and subtle phenotype changes in peritoneal cells of both rat strains might mirror the mechanism contributing to their different sensitivity to the induction of autoimmunity.
AB  - Ispitivan je fenotip peritonealnih ćelija, kao i funkcije peritonealnih makrofaga, izolovanih od pacova Dark Agouti (DA) soja osetljivog na indukciju eksperimentalnog autoimunskog encefalomijelitisa (EAE) i pacova Albino Oxford (AO) soja koji je rezistentan prema EAE-u, 1, 3. i 7. dana nakon imunizacije encefalitogenom. Rezidentne peritonealne ćelije su ispitivane metodom protočne citofluorometrije, a zatim je nakon adherence testirana njihova sposobnost fagocitoze čestica zimozana i kapacitet produkcije vodonik peroksida (H2O2) i azot monoksida (NO). U neimunizovanih pacova makrofage DA soja su intenzivnije fagocitovale čestice zimozana i imale nižu sposobnost produkcije H2O2 nego ćelije pacova AO soja, ali nije bilo sojnih razlika u sposobnosti produkcije NO. Imunizacija je dovela do povećanja fagocitne sposobnosti makrofaga DA pacova, ali i do smanjenja fagocitoze i produkcije H2O2 makrofaga pacova AO soja. Generalno veću sposobnost fagocitoze u DA pacova prati i značajno veća zastupljenost ED1+ ćelija (koje čine uglavnom makrofage i dendritične ćelije) nasuprot većoj zastupljenosti ED2 antigena (marker rezidentnih makrofaga) na ćelijama pacova AO soja. Imunizacija encefalitogenom je takođe dovela do povećanja ekspresije CD11b molekula na nerezidentnim ED2- ćelijama pacova DA, ali ne i AO soja. Rane i diskretne fenotipske promene na peritonealnim ćelijama pacova oba soja verovatno odslikavaju mehanizme koji doprinose njhovoj različitoj osetljivosti prema indukciji autoimunskih oboljenja.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta veterinaria - Beograd
T1  - Phenotype changes induced by immunization with encephalitogen affected the functions of peritoneal macrophages in two rat strains with different sensitivity to experimental autoimmune encephalomyelitis (EAE) induction
T1  - Fenotipske promene izazvane imunizacijom encefalitogenom menjaju funkcije peritonealnih makrofaga u dva soja pacova različite osetljivosti prema indukciji eksperimentalnog autoimunskog encefalomijelitisa (EAE).
EP  - 121
IS  - 2-3
SP  - 105
VL  - 60
DO  - 10.2298/AVB1003105M
UR  - conv_56
ER  - 
@article{
author = "Mitić, Katarina and Miletić, Tatjana and Kovačević-Jovanović, Vesna and Kuštrimović, Nataša and Kosec, Duško and Dimitrijević, Mirjana and Stanojević, Stanislava",
year = "2010",
abstract = "We have investigated the phenotype of peritoneal cells and the functions of peritoneal macrophages obtained from experimental autoimmune encephalomyelitis (EAE)-susceptible Dark Agouti (DA) and EAE-resistant Albino Oxford (AO) rat strains on days 1, 3 and 7 post immunization with encephalitogen. Resident peritoneal cells from immunized and non-immunized rats of both strains were subjected to flow cytometric analyzes and after adherence were tested for zymosan phagocytosis, hydrogen peroxide (H2O2) and nitric oxide (NO) production. In non-immunized rats, macrophages from the DA rat strain phagocytosed more zymosan but produced less H2O2 than cells from the AO strain, while both strains produced comparable amounts of NO. Immunization increased phagocytosis in DA rats' cells, but decreased both phagocytosis and H2O2 production in cells from AO rats. Overall higher phagocyte ability in DA rats was associated with a significantly larger population of ED1+ cells (macrophages and dendritic cells), in contrast to a more pronounced expression of ED2 antigen (resident macrophages) on cells from AO rats. Immunization also increased the expression of CD11b molecule on non-resident ED2-macrophages of DA, but not of AO rats. The early and subtle phenotype changes in peritoneal cells of both rat strains might mirror the mechanism contributing to their different sensitivity to the induction of autoimmunity., Ispitivan je fenotip peritonealnih ćelija, kao i funkcije peritonealnih makrofaga, izolovanih od pacova Dark Agouti (DA) soja osetljivog na indukciju eksperimentalnog autoimunskog encefalomijelitisa (EAE) i pacova Albino Oxford (AO) soja koji je rezistentan prema EAE-u, 1, 3. i 7. dana nakon imunizacije encefalitogenom. Rezidentne peritonealne ćelije su ispitivane metodom protočne citofluorometrije, a zatim je nakon adherence testirana njihova sposobnost fagocitoze čestica zimozana i kapacitet produkcije vodonik peroksida (H2O2) i azot monoksida (NO). U neimunizovanih pacova makrofage DA soja su intenzivnije fagocitovale čestice zimozana i imale nižu sposobnost produkcije H2O2 nego ćelije pacova AO soja, ali nije bilo sojnih razlika u sposobnosti produkcije NO. Imunizacija je dovela do povećanja fagocitne sposobnosti makrofaga DA pacova, ali i do smanjenja fagocitoze i produkcije H2O2 makrofaga pacova AO soja. Generalno veću sposobnost fagocitoze u DA pacova prati i značajno veća zastupljenost ED1+ ćelija (koje čine uglavnom makrofage i dendritične ćelije) nasuprot većoj zastupljenosti ED2 antigena (marker rezidentnih makrofaga) na ćelijama pacova AO soja. Imunizacija encefalitogenom je takođe dovela do povećanja ekspresije CD11b molekula na nerezidentnim ED2- ćelijama pacova DA, ali ne i AO soja. Rane i diskretne fenotipske promene na peritonealnim ćelijama pacova oba soja verovatno odslikavaju mehanizme koji doprinose njhovoj različitoj osetljivosti prema indukciji autoimunskih oboljenja.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta veterinaria - Beograd",
title = "Phenotype changes induced by immunization with encephalitogen affected the functions of peritoneal macrophages in two rat strains with different sensitivity to experimental autoimmune encephalomyelitis (EAE) induction, Fenotipske promene izazvane imunizacijom encefalitogenom menjaju funkcije peritonealnih makrofaga u dva soja pacova različite osetljivosti prema indukciji eksperimentalnog autoimunskog encefalomijelitisa (EAE).",
pages = "121-105",
number = "2-3",
volume = "60",
doi = "10.2298/AVB1003105M",
url = "conv_56"
}
Mitić, K., Miletić, T., Kovačević-Jovanović, V., Kuštrimović, N., Kosec, D., Dimitrijević, M.,& Stanojević, S.. (2010). Phenotype changes induced by immunization with encephalitogen affected the functions of peritoneal macrophages in two rat strains with different sensitivity to experimental autoimmune encephalomyelitis (EAE) induction. in Acta veterinaria - Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 60(2-3), 105-121.
https://doi.org/10.2298/AVB1003105M
conv_56
Mitić K, Miletić T, Kovačević-Jovanović V, Kuštrimović N, Kosec D, Dimitrijević M, Stanojević S. Phenotype changes induced by immunization with encephalitogen affected the functions of peritoneal macrophages in two rat strains with different sensitivity to experimental autoimmune encephalomyelitis (EAE) induction. in Acta veterinaria - Beograd. 2010;60(2-3):105-121.
doi:10.2298/AVB1003105M
conv_56 .
Mitić, Katarina, Miletić, Tatjana, Kovačević-Jovanović, Vesna, Kuštrimović, Nataša, Kosec, Duško, Dimitrijević, Mirjana, Stanojević, Stanislava, "Phenotype changes induced by immunization with encephalitogen affected the functions of peritoneal macrophages in two rat strains with different sensitivity to experimental autoimmune encephalomyelitis (EAE) induction" in Acta veterinaria - Beograd, 60, no. 2-3 (2010):105-121,
https://doi.org/10.2298/AVB1003105M .,
conv_56 .
1
1
1

Age-associated plasticity of alpha 1-adrenoceptor-mediated tuning of T-cell development

Leposavić, Gordana; Pešić, Vesna; Stojić-Vukanić, Zorica; Radojević, Katarina; Arsenović-Ranin, Nevena; Kosec, Duško; Perišić, Milica; Pilipović, Ivan

(Pergamon-Elsevier Science Ltd, Oxford, 2010)

TY  - JOUR
AU  - Leposavić, Gordana
AU  - Pešić, Vesna
AU  - Stojić-Vukanić, Zorica
AU  - Radojević, Katarina
AU  - Arsenović-Ranin, Nevena
AU  - Kosec, Duško
AU  - Perišić, Milica
AU  - Pilipović, Ivan
PY  - 2010
UR  - http://intor.torlakinstitut.com/handle/123456789/296
AB  - Alpha(1)-adrenoceptors (alpha(1)-ARs) are involved in neuro-thymic and thymic intercellular communications, and consequently modulation of T-cell development. Ageing is associated with a number of changes in noradrenergic neuro-effector transmission, and possibly intercellular noradrenaline (NA)-mediated communication resulting in altered responses of target cells to NA. Thus, in old animals an altered NA modulation of thymopoiesis via alpha(1)-ARs may be expected. To test this hypothesis, in old and young adult Wistar rats we examined: 1) thymic NA levels, density of noradrenergic innervation and NA synthesizing cells, as well as alpha(1)-AR expression, and 2) then the effects of 14-day-long treatment with the alpha(1)-AR blocker, urapidil, on thymocyte development. Overall, the first part of study suggested augmented NA signalling to thymic cells via alpha(1)-ARs due to increased NA availability and alpha(1)-AR thymocyte surface density in old rats. The second part of study supported this assumption. Namely, although in rats of both ages urapidil affected the same thymocyte developmental steps ultimately leading to changes in the relative number of the most mature single positive TCR alpha beta(high) thymocytes, its effects were generally more prominent in old animals. Following urapidil treatment, the percentages of CD4+CD8- cells, including those showing a regulatory CD4+CD25+RT6.1- phenotype, were increased, while CD4-CD8+ cells decreased. In old rats, an augmented thymic escape of immature CD4+CD8+ cells was also registered. In rats of both ages the thymic changes were accompanied by alterations in the proportions of major cell populations in the T-lymphocyte compartment of both peripheral blood and spleen, leading to an increase in the CD4+/CD8+ T-cell ratio. These alterations were also more pronounced in old rats. Moreover, in old rats following urapidil treatment the proportion of TCR alpha beta + cells in the periphery was slightly greater reflecting, most likely, partly enhanced thymic production of regulatory CD161 +TCR alpha beta + cells. Thus, the study indirectly suggests an age-associated increase in the basal alpha(1)-AR-mediated inhibitory influence of NA on thymopoiesis. (C) 2010 Elsevier Inc. All rights reserved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Experimental Gerontology
T1  - Age-associated plasticity of alpha 1-adrenoceptor-mediated tuning of T-cell development
EP  - 935
IS  - 12
SP  - 918
VL  - 45
DO  - 10.1016/j.exger.2010.08.011
UR  - conv_260
ER  - 
@article{
author = "Leposavić, Gordana and Pešić, Vesna and Stojić-Vukanić, Zorica and Radojević, Katarina and Arsenović-Ranin, Nevena and Kosec, Duško and Perišić, Milica and Pilipović, Ivan",
year = "2010",
abstract = "Alpha(1)-adrenoceptors (alpha(1)-ARs) are involved in neuro-thymic and thymic intercellular communications, and consequently modulation of T-cell development. Ageing is associated with a number of changes in noradrenergic neuro-effector transmission, and possibly intercellular noradrenaline (NA)-mediated communication resulting in altered responses of target cells to NA. Thus, in old animals an altered NA modulation of thymopoiesis via alpha(1)-ARs may be expected. To test this hypothesis, in old and young adult Wistar rats we examined: 1) thymic NA levels, density of noradrenergic innervation and NA synthesizing cells, as well as alpha(1)-AR expression, and 2) then the effects of 14-day-long treatment with the alpha(1)-AR blocker, urapidil, on thymocyte development. Overall, the first part of study suggested augmented NA signalling to thymic cells via alpha(1)-ARs due to increased NA availability and alpha(1)-AR thymocyte surface density in old rats. The second part of study supported this assumption. Namely, although in rats of both ages urapidil affected the same thymocyte developmental steps ultimately leading to changes in the relative number of the most mature single positive TCR alpha beta(high) thymocytes, its effects were generally more prominent in old animals. Following urapidil treatment, the percentages of CD4+CD8- cells, including those showing a regulatory CD4+CD25+RT6.1- phenotype, were increased, while CD4-CD8+ cells decreased. In old rats, an augmented thymic escape of immature CD4+CD8+ cells was also registered. In rats of both ages the thymic changes were accompanied by alterations in the proportions of major cell populations in the T-lymphocyte compartment of both peripheral blood and spleen, leading to an increase in the CD4+/CD8+ T-cell ratio. These alterations were also more pronounced in old rats. Moreover, in old rats following urapidil treatment the proportion of TCR alpha beta + cells in the periphery was slightly greater reflecting, most likely, partly enhanced thymic production of regulatory CD161 +TCR alpha beta + cells. Thus, the study indirectly suggests an age-associated increase in the basal alpha(1)-AR-mediated inhibitory influence of NA on thymopoiesis. (C) 2010 Elsevier Inc. All rights reserved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Experimental Gerontology",
title = "Age-associated plasticity of alpha 1-adrenoceptor-mediated tuning of T-cell development",
pages = "935-918",
number = "12",
volume = "45",
doi = "10.1016/j.exger.2010.08.011",
url = "conv_260"
}
Leposavić, G., Pešić, V., Stojić-Vukanić, Z., Radojević, K., Arsenović-Ranin, N., Kosec, D., Perišić, M.,& Pilipović, I.. (2010). Age-associated plasticity of alpha 1-adrenoceptor-mediated tuning of T-cell development. in Experimental Gerontology
Pergamon-Elsevier Science Ltd, Oxford., 45(12), 918-935.
https://doi.org/10.1016/j.exger.2010.08.011
conv_260
Leposavić G, Pešić V, Stojić-Vukanić Z, Radojević K, Arsenović-Ranin N, Kosec D, Perišić M, Pilipović I. Age-associated plasticity of alpha 1-adrenoceptor-mediated tuning of T-cell development. in Experimental Gerontology. 2010;45(12):918-935.
doi:10.1016/j.exger.2010.08.011
conv_260 .
Leposavić, Gordana, Pešić, Vesna, Stojić-Vukanić, Zorica, Radojević, Katarina, Arsenović-Ranin, Nevena, Kosec, Duško, Perišić, Milica, Pilipović, Ivan, "Age-associated plasticity of alpha 1-adrenoceptor-mediated tuning of T-cell development" in Experimental Gerontology, 45, no. 12 (2010):918-935,
https://doi.org/10.1016/j.exger.2010.08.011 .,
conv_260 .
13
11
13

Production of H2O2 and NO by rat peritoneal macrophages in response to gut commensal bacteria

Kovačević-Jovanović, Vesna; Mitić, Katarina; Stanojević, Stanislava; Miletić, Tatjana; Vujić, Vesna; Dimitrijević, Mirjana

(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2009)

TY  - JOUR
AU  - Kovačević-Jovanović, Vesna
AU  - Mitić, Katarina
AU  - Stanojević, Stanislava
AU  - Miletić, Tatjana
AU  - Vujić, Vesna
AU  - Dimitrijević, Mirjana
PY  - 2009
UR  - http://intor.torlakinstitut.com/handle/123456789/290
AB  - The importance of commensal bacteria in the immune system development and its involvement in the etiopatogenetic mechanisms of complex multifactorial and multigenic diseases is well documented. The aim of the present study was to compare the levels of hydrogen peroxide (H2O2) and nitric oxide (NO) produced by resident peritoneal macrophages from the autoimmune disease susceptible Dark Agouti (DA) rats vs. resistant Albino Oxford (AO) rat strain, under basal conditions and subsequent to in vitro stimulation with gut commensals. Following the stimulation with phorbol myristil acetate (PMA), E. coli/PMA or P. mirabilis/PMA, AO rats macrophages have produced significantly higher levels of H2O2 compared to the cells from DA rats. Strain differences in NO production were not detected under basal conditions and after the stimulation with lipopolysaccharide and P. mirabilis. However, after the in vitro stimulation with E. coli, AO rats macrophages have produced higher levels of NO compared to DA rats macrophages. Our results demonstrated that macrophages from AO rats have higher potential to produce H2O2 and NO in response to specific commensal bacteria when compared to DA rats. A possible relationship between the macrophage activity in response to commensal bacteria and the susceptibility to induction of autoimmune/inflammatory diseases in AO and DA rat strains is suggested.
AB  - Poznato je da komensalna crevna flora ima značajnu ulogu u razvoju imunskog sistema kao i u etiopatogenezi kompleksnih multifaktorijalnih i multigenetskih bolesti. Cilj ovog rada bio je da se uporedi produkcija vodonik peroksida (H2O2) i azot monoksida (NO) peritonealnih makrofaga dva inbredna soja pacova, od kojih je jedan osetljiv (Dark Agouti, DA), a drugi rezistentan (Albino Oxford, AO) na indukciju autoimunskih bolesti, kako u bazalnim uslovima tako i nakon in vitro stimulacije makrofaga sa crevnim komensalima. Nakon stimulacije sa forbol miristil acetatom (PMA), E. coli/PMA and P. mirabilis/PMA makrofage AO pacova su produkovale značajno više H2O2 u poređenju sa makrofagama DA pacova. Nisu detektovane sojne razlike u produkciji NO u bazalnim uslovima, kao ni posle stimulacije sa lipopolisaharidom i P. mirabilis. Međutim, nakon in vitro stimulacije sa E. coli makrofage AO pacova su produkovale više NO u odnosu na makrofage DA pacova. Naši rezultati su ukazali da makrofage AO pacova imaju veći potencijal za produkciju H2O2 i NO u odgovoru na specifične komensalne bakterije. Ova različita aktivnost makrofaga može biti u vezi sa različitom osetljivošću na indukciju autoimunskih/inflamatornih bolesti kod DA i AO soja pacova.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta veterinaria - Beograd
T1  - Production of H2O2 and NO by rat peritoneal macrophages in response to gut commensal bacteria
T1  - Produkcija H2O2 i NO peritonealnih makrofaga pacova u odgovoru na crevne komensalne bakterije
EP  - 122
IS  - 2-3
SP  - 111
VL  - 59
DO  - 10.2298/AVB0903111K
UR  - conv_55
ER  - 
@article{
author = "Kovačević-Jovanović, Vesna and Mitić, Katarina and Stanojević, Stanislava and Miletić, Tatjana and Vujić, Vesna and Dimitrijević, Mirjana",
year = "2009",
abstract = "The importance of commensal bacteria in the immune system development and its involvement in the etiopatogenetic mechanisms of complex multifactorial and multigenic diseases is well documented. The aim of the present study was to compare the levels of hydrogen peroxide (H2O2) and nitric oxide (NO) produced by resident peritoneal macrophages from the autoimmune disease susceptible Dark Agouti (DA) rats vs. resistant Albino Oxford (AO) rat strain, under basal conditions and subsequent to in vitro stimulation with gut commensals. Following the stimulation with phorbol myristil acetate (PMA), E. coli/PMA or P. mirabilis/PMA, AO rats macrophages have produced significantly higher levels of H2O2 compared to the cells from DA rats. Strain differences in NO production were not detected under basal conditions and after the stimulation with lipopolysaccharide and P. mirabilis. However, after the in vitro stimulation with E. coli, AO rats macrophages have produced higher levels of NO compared to DA rats macrophages. Our results demonstrated that macrophages from AO rats have higher potential to produce H2O2 and NO in response to specific commensal bacteria when compared to DA rats. A possible relationship between the macrophage activity in response to commensal bacteria and the susceptibility to induction of autoimmune/inflammatory diseases in AO and DA rat strains is suggested., Poznato je da komensalna crevna flora ima značajnu ulogu u razvoju imunskog sistema kao i u etiopatogenezi kompleksnih multifaktorijalnih i multigenetskih bolesti. Cilj ovog rada bio je da se uporedi produkcija vodonik peroksida (H2O2) i azot monoksida (NO) peritonealnih makrofaga dva inbredna soja pacova, od kojih je jedan osetljiv (Dark Agouti, DA), a drugi rezistentan (Albino Oxford, AO) na indukciju autoimunskih bolesti, kako u bazalnim uslovima tako i nakon in vitro stimulacije makrofaga sa crevnim komensalima. Nakon stimulacije sa forbol miristil acetatom (PMA), E. coli/PMA and P. mirabilis/PMA makrofage AO pacova su produkovale značajno više H2O2 u poređenju sa makrofagama DA pacova. Nisu detektovane sojne razlike u produkciji NO u bazalnim uslovima, kao ni posle stimulacije sa lipopolisaharidom i P. mirabilis. Međutim, nakon in vitro stimulacije sa E. coli makrofage AO pacova su produkovale više NO u odnosu na makrofage DA pacova. Naši rezultati su ukazali da makrofage AO pacova imaju veći potencijal za produkciju H2O2 i NO u odgovoru na specifične komensalne bakterije. Ova različita aktivnost makrofaga može biti u vezi sa različitom osetljivošću na indukciju autoimunskih/inflamatornih bolesti kod DA i AO soja pacova.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta veterinaria - Beograd",
title = "Production of H2O2 and NO by rat peritoneal macrophages in response to gut commensal bacteria, Produkcija H2O2 i NO peritonealnih makrofaga pacova u odgovoru na crevne komensalne bakterije",
pages = "122-111",
number = "2-3",
volume = "59",
doi = "10.2298/AVB0903111K",
url = "conv_55"
}
Kovačević-Jovanović, V., Mitić, K., Stanojević, S., Miletić, T., Vujić, V.,& Dimitrijević, M.. (2009). Production of H2O2 and NO by rat peritoneal macrophages in response to gut commensal bacteria. in Acta veterinaria - Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 59(2-3), 111-122.
https://doi.org/10.2298/AVB0903111K
conv_55
Kovačević-Jovanović V, Mitić K, Stanojević S, Miletić T, Vujić V, Dimitrijević M. Production of H2O2 and NO by rat peritoneal macrophages in response to gut commensal bacteria. in Acta veterinaria - Beograd. 2009;59(2-3):111-122.
doi:10.2298/AVB0903111K
conv_55 .
Kovačević-Jovanović, Vesna, Mitić, Katarina, Stanojević, Stanislava, Miletić, Tatjana, Vujić, Vesna, Dimitrijević, Mirjana, "Production of H2O2 and NO by rat peritoneal macrophages in response to gut commensal bacteria" in Acta veterinaria - Beograd, 59, no. 2-3 (2009):111-122,
https://doi.org/10.2298/AVB0903111K .,
conv_55 .
2
2
2

Neonatal testosterone imprinting affects thymus development and leads to phenotypic rejuvenation and masculinization of the peripheral blood T-cell compartment in adult female rats

Leposavić, Gordana; Perišić, Milica; Kosec, Duško; Arsenović-Ranin, Nevena; Radojević, Katarina; Stojić-Vukanić, Zorica; Pilipović, Ivan

(Academic Press Inc Elsevier Science, San Diego, 2009)

TY  - JOUR
AU  - Leposavić, Gordana
AU  - Perišić, Milica
AU  - Kosec, Duško
AU  - Arsenović-Ranin, Nevena
AU  - Radojević, Katarina
AU  - Stojić-Vukanić, Zorica
AU  - Pilipović, Ivan
PY  - 2009
UR  - http://intor.torlakinstitut.com/handle/123456789/289
AB  - Exposure of female rodents to testosterone in the critical neonatal period produces defeminization/masculinization of the hypothalamo-pituitary-gonadal (HPG) axis, i.e. neonatal androgenization and postpones axis maturation. To address the hypothesis that HPG axis signaling is involved in the programming of thymic maturation/involution and sexual differentiation we studied the impact of neonatal androgenization on thymic cellularity, development of effector and regulatory T cells, and phenotypic characteristics of peripheral blood T lymphocytes in adult rats. A single injection of testosterome on postnatal day 2 postponed thymic maturation/involution as revealed by organ hypercellularity, increased cellularity of the most mature (CD4+CD8- and CD4-CD8+) TCR alpha beta(high) thymocyte and both recent thymic emigrant (RTE) subsets and caused phenotypic efeminization/masculinization of thymic (decreased CD4+CD8-TCR alpha beta(high)/CD4-CD8+TCR alpha beta(high) cell ratio) and peripheral blood T-cell compartments (decreased CD4+RTE/CD8+RTE and CD4+/CD8+ cell ratio). In addition, neonatal androgenization increased the relative and absolute numbers of both CD4+CD25+Foxp3+ and natural killer (NK) regulatory T cells in peripheral blood. These findings, in conjunction with thymocyte overexpression of Thy-1 that is assumed to reduce negative selection affecting self-reactive cell generation, suggest a new relationship between self-reactive and regulatory T cells. In conclusion, our study provides additional evidence for a role of HPG signals (i.e. sex steroids and gonadotropins) in programming the kinetics of thymic maturation/involution and in establishing immunological sexual dimorphism. (C) 2008 Elsevier Inc. All rights reserved.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Brain Behavior and Immunity
T1  - Neonatal testosterone imprinting affects thymus development and leads to phenotypic rejuvenation and masculinization of the peripheral blood T-cell compartment in adult female rats
EP  - 304
IS  - 2
SP  - 294
VL  - 23
DO  - 10.1016/j.bbi.2008.11.002
UR  - conv_228
ER  - 
@article{
author = "Leposavić, Gordana and Perišić, Milica and Kosec, Duško and Arsenović-Ranin, Nevena and Radojević, Katarina and Stojić-Vukanić, Zorica and Pilipović, Ivan",
year = "2009",
abstract = "Exposure of female rodents to testosterone in the critical neonatal period produces defeminization/masculinization of the hypothalamo-pituitary-gonadal (HPG) axis, i.e. neonatal androgenization and postpones axis maturation. To address the hypothesis that HPG axis signaling is involved in the programming of thymic maturation/involution and sexual differentiation we studied the impact of neonatal androgenization on thymic cellularity, development of effector and regulatory T cells, and phenotypic characteristics of peripheral blood T lymphocytes in adult rats. A single injection of testosterome on postnatal day 2 postponed thymic maturation/involution as revealed by organ hypercellularity, increased cellularity of the most mature (CD4+CD8- and CD4-CD8+) TCR alpha beta(high) thymocyte and both recent thymic emigrant (RTE) subsets and caused phenotypic efeminization/masculinization of thymic (decreased CD4+CD8-TCR alpha beta(high)/CD4-CD8+TCR alpha beta(high) cell ratio) and peripheral blood T-cell compartments (decreased CD4+RTE/CD8+RTE and CD4+/CD8+ cell ratio). In addition, neonatal androgenization increased the relative and absolute numbers of both CD4+CD25+Foxp3+ and natural killer (NK) regulatory T cells in peripheral blood. These findings, in conjunction with thymocyte overexpression of Thy-1 that is assumed to reduce negative selection affecting self-reactive cell generation, suggest a new relationship between self-reactive and regulatory T cells. In conclusion, our study provides additional evidence for a role of HPG signals (i.e. sex steroids and gonadotropins) in programming the kinetics of thymic maturation/involution and in establishing immunological sexual dimorphism. (C) 2008 Elsevier Inc. All rights reserved.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Brain Behavior and Immunity",
title = "Neonatal testosterone imprinting affects thymus development and leads to phenotypic rejuvenation and masculinization of the peripheral blood T-cell compartment in adult female rats",
pages = "304-294",
number = "2",
volume = "23",
doi = "10.1016/j.bbi.2008.11.002",
url = "conv_228"
}
Leposavić, G., Perišić, M., Kosec, D., Arsenović-Ranin, N., Radojević, K., Stojić-Vukanić, Z.,& Pilipović, I.. (2009). Neonatal testosterone imprinting affects thymus development and leads to phenotypic rejuvenation and masculinization of the peripheral blood T-cell compartment in adult female rats. in Brain Behavior and Immunity
Academic Press Inc Elsevier Science, San Diego., 23(2), 294-304.
https://doi.org/10.1016/j.bbi.2008.11.002
conv_228
Leposavić G, Perišić M, Kosec D, Arsenović-Ranin N, Radojević K, Stojić-Vukanić Z, Pilipović I. Neonatal testosterone imprinting affects thymus development and leads to phenotypic rejuvenation and masculinization of the peripheral blood T-cell compartment in adult female rats. in Brain Behavior and Immunity. 2009;23(2):294-304.
doi:10.1016/j.bbi.2008.11.002
conv_228 .
Leposavić, Gordana, Perišić, Milica, Kosec, Duško, Arsenović-Ranin, Nevena, Radojević, Katarina, Stojić-Vukanić, Zorica, Pilipović, Ivan, "Neonatal testosterone imprinting affects thymus development and leads to phenotypic rejuvenation and masculinization of the peripheral blood T-cell compartment in adult female rats" in Brain Behavior and Immunity, 23, no. 2 (2009):294-304,
https://doi.org/10.1016/j.bbi.2008.11.002 .,
conv_228 .
19
15
18

Peripubertal ovariectomy provides long-term postponement of age-associated decline in thymic cellularity and T-cell output

Perišić, Milica; Kosec, Duško; Pilipović, Ivan; Radojević, Katarina; Pešić, Vesna; Rakin, Ana; Leposavić, Gordana

(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2009)

TY  - JOUR
AU  - Perišić, Milica
AU  - Kosec, Duško
AU  - Pilipović, Ivan
AU  - Radojević, Katarina
AU  - Pešić, Vesna
AU  - Rakin, Ana
AU  - Leposavić, Gordana
PY  - 2009
UR  - http://intor.torlakinstitut.com/handle/123456789/288
AB  - The present study was undertaken to reassess the recently challenged role of ovarian hormones in age-associated thymic involution. For this purpose, in eleven-month-old peripubertally ovariectomized (Ox) rats we analyzed: i) thymic weight and cellularity, ii) size of CD4+CD8+ double-positive (DP) thymocyte population, which is believed to correlate to the thymic capacity to export mature T cells, iii) number of recent thymic emigrants (RTEs), and iv) number of peripheral blood CD4+ and CD8+ lymphocytes. It was found that both thymic weight and cellularity were greater in Ox than in control rats. In addition, in Ox rats the numbers of DP thymocytes and both CD4+ and CD8+ RTEs, were significantly greater than in controls, indicating a more efficient generation of T cells in these rats. Furthermore, these findings, coupled with data indicating that the number of neither CD4+ nor CD8+ peripheral blood lymphocytes was affected by ovariectomy, most likely, suggest a reduced homeostatic proliferation of memory cells in Ox rats, i.e. broadening of TCR peripheral repertoire without changes in the overall number of T cells leading to a more efficient response to newly encountered antigens. The results indicate that the ovarian steroid deprivation from early peripubertal period leads to a long lasting postponement/alleviation of age-associated decline in T-cell mediated immune response.
AB  - Ova istraživanja su preduzeta sa ciljem da se preispita uloga gonadnih hormona u involuciji timusa, koja je nedavno dovedena u pitanje. U tom cilju je kod 11 meseci starih ženki pacova, koje su ovarijektomisane (Ox) u peripubertetnom uzrastu, analizirana: i) težina i celularnost timusa, ii) broj CD4+CD8+ dvostruko pozitivnih (DP) timocita, za koji se smatra da odražavaju sposobnost organa da generiše zrele T limfocite, iii) broj neposrednih emigranata iz timusa (RTE) i iv) ukupan broj CD4+ i CD8+ limfocita u perifernoj krvi. Dokazano je da su težina i celularnost timusa bile značajno veće u Ox životinja. Kod ovih životinja je nađen i povećan broj DP timocita, kao i CD4+ i CD8+ RTE, što ukazuje na efikasniju produkciju T ćelija u njihovom timusu. Ovaj nalaz, u kontekstu nepromenjenog broja CD4+ i CD8+ ćelija u perifernoj krvi, takođe sugeriše smanjenu homeostatsku proliferaciju memorijskih ćelija, odnosno ukazuje na kvalitativne promene u perifernom T ćelijskom repertoaru (koje obezbeđuju efikasniji odgovor na nove antigene) bez kvantitativnih promena. U celini, rezultati ukazuju da u odsustvu hormona ovarijuma počevši od ranog peripubertetnog uzrasta dolazi do značajnog odlaganja/ublažavanja involucije timusa i posledičnih promena na periferiji.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta veterinaria - Beograd
T1  - Peripubertal ovariectomy provides long-term postponement of age-associated decline in thymic cellularity and T-cell output
T1  - Peripubertetna ovarijektomija obezbeđuje dugotrajno odlaganje starenjem uslovljenog smanjenja celularnosti timusa i produkcije T limfocita
EP  - 15
IS  - 1
SP  - 3
VL  - 59
DO  - 10.2298/AVB0901003P
UR  - conv_54
ER  - 
@article{
author = "Perišić, Milica and Kosec, Duško and Pilipović, Ivan and Radojević, Katarina and Pešić, Vesna and Rakin, Ana and Leposavić, Gordana",
year = "2009",
abstract = "The present study was undertaken to reassess the recently challenged role of ovarian hormones in age-associated thymic involution. For this purpose, in eleven-month-old peripubertally ovariectomized (Ox) rats we analyzed: i) thymic weight and cellularity, ii) size of CD4+CD8+ double-positive (DP) thymocyte population, which is believed to correlate to the thymic capacity to export mature T cells, iii) number of recent thymic emigrants (RTEs), and iv) number of peripheral blood CD4+ and CD8+ lymphocytes. It was found that both thymic weight and cellularity were greater in Ox than in control rats. In addition, in Ox rats the numbers of DP thymocytes and both CD4+ and CD8+ RTEs, were significantly greater than in controls, indicating a more efficient generation of T cells in these rats. Furthermore, these findings, coupled with data indicating that the number of neither CD4+ nor CD8+ peripheral blood lymphocytes was affected by ovariectomy, most likely, suggest a reduced homeostatic proliferation of memory cells in Ox rats, i.e. broadening of TCR peripheral repertoire without changes in the overall number of T cells leading to a more efficient response to newly encountered antigens. The results indicate that the ovarian steroid deprivation from early peripubertal period leads to a long lasting postponement/alleviation of age-associated decline in T-cell mediated immune response., Ova istraživanja su preduzeta sa ciljem da se preispita uloga gonadnih hormona u involuciji timusa, koja je nedavno dovedena u pitanje. U tom cilju je kod 11 meseci starih ženki pacova, koje su ovarijektomisane (Ox) u peripubertetnom uzrastu, analizirana: i) težina i celularnost timusa, ii) broj CD4+CD8+ dvostruko pozitivnih (DP) timocita, za koji se smatra da odražavaju sposobnost organa da generiše zrele T limfocite, iii) broj neposrednih emigranata iz timusa (RTE) i iv) ukupan broj CD4+ i CD8+ limfocita u perifernoj krvi. Dokazano je da su težina i celularnost timusa bile značajno veće u Ox životinja. Kod ovih životinja je nađen i povećan broj DP timocita, kao i CD4+ i CD8+ RTE, što ukazuje na efikasniju produkciju T ćelija u njihovom timusu. Ovaj nalaz, u kontekstu nepromenjenog broja CD4+ i CD8+ ćelija u perifernoj krvi, takođe sugeriše smanjenu homeostatsku proliferaciju memorijskih ćelija, odnosno ukazuje na kvalitativne promene u perifernom T ćelijskom repertoaru (koje obezbeđuju efikasniji odgovor na nove antigene) bez kvantitativnih promena. U celini, rezultati ukazuju da u odsustvu hormona ovarijuma počevši od ranog peripubertetnog uzrasta dolazi do značajnog odlaganja/ublažavanja involucije timusa i posledičnih promena na periferiji.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta veterinaria - Beograd",
title = "Peripubertal ovariectomy provides long-term postponement of age-associated decline in thymic cellularity and T-cell output, Peripubertetna ovarijektomija obezbeđuje dugotrajno odlaganje starenjem uslovljenog smanjenja celularnosti timusa i produkcije T limfocita",
pages = "15-3",
number = "1",
volume = "59",
doi = "10.2298/AVB0901003P",
url = "conv_54"
}
Perišić, M., Kosec, D., Pilipović, I., Radojević, K., Pešić, V., Rakin, A.,& Leposavić, G.. (2009). Peripubertal ovariectomy provides long-term postponement of age-associated decline in thymic cellularity and T-cell output. in Acta veterinaria - Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 59(1), 3-15.
https://doi.org/10.2298/AVB0901003P
conv_54
Perišić M, Kosec D, Pilipović I, Radojević K, Pešić V, Rakin A, Leposavić G. Peripubertal ovariectomy provides long-term postponement of age-associated decline in thymic cellularity and T-cell output. in Acta veterinaria - Beograd. 2009;59(1):3-15.
doi:10.2298/AVB0901003P
conv_54 .
Perišić, Milica, Kosec, Duško, Pilipović, Ivan, Radojević, Katarina, Pešić, Vesna, Rakin, Ana, Leposavić, Gordana, "Peripubertal ovariectomy provides long-term postponement of age-associated decline in thymic cellularity and T-cell output" in Acta veterinaria - Beograd, 59, no. 1 (2009):3-15,
https://doi.org/10.2298/AVB0901003P .,
conv_54 .
2
1
2

Chronic propranolol treatment affects expression of adrenoceptors on peritoneal macrophages and their ability to produce hydrogen peroxide and nitric oxide

Dimitrijević, Mirjana; Pilipović, Ivan; Stanojević, Stanislava; Mitić, Katarina; Radojević, Katarina; Pešić, Vesna; Leposavić, Gordana

(Elsevier, Amsterdam, 2009)

TY  - JOUR
AU  - Dimitrijević, Mirjana
AU  - Pilipović, Ivan
AU  - Stanojević, Stanislava
AU  - Mitić, Katarina
AU  - Radojević, Katarina
AU  - Pešić, Vesna
AU  - Leposavić, Gordana
PY  - 2009
UR  - http://intor.torlakinstitut.com/handle/123456789/273
AB  - Using both immunocytochemical and flow cytometric analyses of rat peritoneal exudate cells constitutive expression of tyrosine hydroxylase and both beta(2)- and alpha(1)-adrenoceptors on macrophages was revealed. Furthermore, according to the characteristic assemblage of tyrosine hydroxylase and adrenoceptor subtype expression different macrophage subsets were identified. In vitro treatment of macrophages with the nonselective alpha,beta-adrenoceptor agonist arterenol and/or the beta-adrenoceptor antagonist propranolol indicated that beta-adrenoceptors potentiated nitric oxide (NO) production and suggested alpha-adrenoceptor-mediated suppression of hydrogen peroxide (H2O2) production. An increase in H2O2 production in the presence of the alpha(1)-adrenoceptor antagonist ebrantil provided support for this. Chronic propranolol treatment in vivo led to increased NO and H2O2 production by peritoneal macrophages. Furthermore, this treatment resulted in opposing effects on the expression Of beta(2)- and alpha(1)-adrenoceptors on peritoneal macrophages (a stimulatory effect on beta(2)-adrenoceptors and a suppressive effect on alpha(1)-adrenoceptors). In conclusion, a subset of resident peritoneal macrophages synthesizes catecholamines, which may exert differential effects on H2O2 and NO production via distinct adrenoceptors. Finally, chronic propranolol treatment affected adrenoceptor expression on peritoneal macrophages and altered their capacity to generate NO and H2O2. (C) 2009 Elsevier B.V. All rights reserved.
PB  - Elsevier, Amsterdam
T2  - Journal of Neuroimmunology
T1  - Chronic propranolol treatment affects expression of adrenoceptors on peritoneal macrophages and their ability to produce hydrogen peroxide and nitric oxide
EP  - 65
IS  - 1-2
SP  - 56
VL  - 211
DO  - 10.1016/j.jneuroim.2009.03.014
UR  - conv_238
ER  - 
@article{
author = "Dimitrijević, Mirjana and Pilipović, Ivan and Stanojević, Stanislava and Mitić, Katarina and Radojević, Katarina and Pešić, Vesna and Leposavić, Gordana",
year = "2009",
abstract = "Using both immunocytochemical and flow cytometric analyses of rat peritoneal exudate cells constitutive expression of tyrosine hydroxylase and both beta(2)- and alpha(1)-adrenoceptors on macrophages was revealed. Furthermore, according to the characteristic assemblage of tyrosine hydroxylase and adrenoceptor subtype expression different macrophage subsets were identified. In vitro treatment of macrophages with the nonselective alpha,beta-adrenoceptor agonist arterenol and/or the beta-adrenoceptor antagonist propranolol indicated that beta-adrenoceptors potentiated nitric oxide (NO) production and suggested alpha-adrenoceptor-mediated suppression of hydrogen peroxide (H2O2) production. An increase in H2O2 production in the presence of the alpha(1)-adrenoceptor antagonist ebrantil provided support for this. Chronic propranolol treatment in vivo led to increased NO and H2O2 production by peritoneal macrophages. Furthermore, this treatment resulted in opposing effects on the expression Of beta(2)- and alpha(1)-adrenoceptors on peritoneal macrophages (a stimulatory effect on beta(2)-adrenoceptors and a suppressive effect on alpha(1)-adrenoceptors). In conclusion, a subset of resident peritoneal macrophages synthesizes catecholamines, which may exert differential effects on H2O2 and NO production via distinct adrenoceptors. Finally, chronic propranolol treatment affected adrenoceptor expression on peritoneal macrophages and altered their capacity to generate NO and H2O2. (C) 2009 Elsevier B.V. All rights reserved.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Neuroimmunology",
title = "Chronic propranolol treatment affects expression of adrenoceptors on peritoneal macrophages and their ability to produce hydrogen peroxide and nitric oxide",
pages = "65-56",
number = "1-2",
volume = "211",
doi = "10.1016/j.jneuroim.2009.03.014",
url = "conv_238"
}
Dimitrijević, M., Pilipović, I., Stanojević, S., Mitić, K., Radojević, K., Pešić, V.,& Leposavić, G.. (2009). Chronic propranolol treatment affects expression of adrenoceptors on peritoneal macrophages and their ability to produce hydrogen peroxide and nitric oxide. in Journal of Neuroimmunology
Elsevier, Amsterdam., 211(1-2), 56-65.
https://doi.org/10.1016/j.jneuroim.2009.03.014
conv_238
Dimitrijević M, Pilipović I, Stanojević S, Mitić K, Radojević K, Pešić V, Leposavić G. Chronic propranolol treatment affects expression of adrenoceptors on peritoneal macrophages and their ability to produce hydrogen peroxide and nitric oxide. in Journal of Neuroimmunology. 2009;211(1-2):56-65.
doi:10.1016/j.jneuroim.2009.03.014
conv_238 .
Dimitrijević, Mirjana, Pilipović, Ivan, Stanojević, Stanislava, Mitić, Katarina, Radojević, Katarina, Pešić, Vesna, Leposavić, Gordana, "Chronic propranolol treatment affects expression of adrenoceptors on peritoneal macrophages and their ability to produce hydrogen peroxide and nitric oxide" in Journal of Neuroimmunology, 211, no. 1-2 (2009):56-65,
https://doi.org/10.1016/j.jneuroim.2009.03.014 .,
conv_238 .
13
13
13

Expression of alpha(1)-adrenoceptors on thymic cells and their role in fine tuning of thymopoiesis

Pešić, Vesna; Kosec, Duško; Radojević, Katarina; Pilipović, Ivan; Perišić, Milica; Vidić-Danković, Biljana; Leposavić, Gordana

(Elsevier Science Bv, Amsterdam, 2009)

TY  - JOUR
AU  - Pešić, Vesna
AU  - Kosec, Duško
AU  - Radojević, Katarina
AU  - Pilipović, Ivan
AU  - Perišić, Milica
AU  - Vidić-Danković, Biljana
AU  - Leposavić, Gordana
PY  - 2009
UR  - http://intor.torlakinstitut.com/handle/123456789/272
AB  - The study was undertaken to explore: i) the presence of alpha(1)-adrenoceptors (AR) on thymic lymphoid and non-lymphoid cells and ii) their putative role in T-cell development. The expression of alpha(1)-AR on thymic cells was assessed using both immunohistochemistry and flow cytometric analyses, while their putative role in thymopoiesis was estimated by analyses of thymocyte proliferation and apoptosis, and major thymocyte subset distribution in adult rats subjected to 14-day-long treatment with the alpha(1)-AR blocker urapidil. The presence of alpha(1)-AR was demonstrated on both thymocytes (mainly less mature CD3(-) and CD3(low) cells) and thymic non-lymphoid cells (thymic epithelial cells and CD68-positive cells). Chronic treatment with urapidil increased the thymic weight and thymocyte number. The increase in thymocyte number might, at least partly, be related to an enhanced thymocyte proliferation. In addition, an altered thymocyte subset distribution was observed in these rats. The increase in the percentage of CD4+CD8+ double positive (DP) TCR alpha beta(-) thymocytes was accompanied by the reduction in that of CD4+CD8+ (DP) TCR alpha beta(low) cells, and divergent changes in the percentage of the most mature single positive (SP) TCR alpha beta(high) high thymocytes. In urapidil-administered rats the percentage of CD4+CD8-SP TCR alpha beta(high) thymocytes was increased, while that of the CD4-CD8+ TCR alpha beta(high) was reduced. compared with controls. In addition, proportions of CD4+CD25+ RT6.1- and CD161+TCR alpha beta+ regulatory cells were increased. Collectively, the results indicate that alpha(1)-AR are involved in complex network of neuro-thymic and intrathymic communications that provide fine tuning of both conventional effector and regulatory T-cell development. (c) 2009 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Neuroimmunology
T1  - Expression of alpha(1)-adrenoceptors on thymic cells and their role in fine tuning of thymopoiesis
EP  - 66
IS  - 1-2
SP  - 55
VL  - 214
DO  - 10.1016/j.jneuroim.2009.06.018
UR  - conv_112
ER  - 
@article{
author = "Pešić, Vesna and Kosec, Duško and Radojević, Katarina and Pilipović, Ivan and Perišić, Milica and Vidić-Danković, Biljana and Leposavić, Gordana",
year = "2009",
abstract = "The study was undertaken to explore: i) the presence of alpha(1)-adrenoceptors (AR) on thymic lymphoid and non-lymphoid cells and ii) their putative role in T-cell development. The expression of alpha(1)-AR on thymic cells was assessed using both immunohistochemistry and flow cytometric analyses, while their putative role in thymopoiesis was estimated by analyses of thymocyte proliferation and apoptosis, and major thymocyte subset distribution in adult rats subjected to 14-day-long treatment with the alpha(1)-AR blocker urapidil. The presence of alpha(1)-AR was demonstrated on both thymocytes (mainly less mature CD3(-) and CD3(low) cells) and thymic non-lymphoid cells (thymic epithelial cells and CD68-positive cells). Chronic treatment with urapidil increased the thymic weight and thymocyte number. The increase in thymocyte number might, at least partly, be related to an enhanced thymocyte proliferation. In addition, an altered thymocyte subset distribution was observed in these rats. The increase in the percentage of CD4+CD8+ double positive (DP) TCR alpha beta(-) thymocytes was accompanied by the reduction in that of CD4+CD8+ (DP) TCR alpha beta(low) cells, and divergent changes in the percentage of the most mature single positive (SP) TCR alpha beta(high) high thymocytes. In urapidil-administered rats the percentage of CD4+CD8-SP TCR alpha beta(high) thymocytes was increased, while that of the CD4-CD8+ TCR alpha beta(high) was reduced. compared with controls. In addition, proportions of CD4+CD25+ RT6.1- and CD161+TCR alpha beta+ regulatory cells were increased. Collectively, the results indicate that alpha(1)-AR are involved in complex network of neuro-thymic and intrathymic communications that provide fine tuning of both conventional effector and regulatory T-cell development. (c) 2009 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Neuroimmunology",
title = "Expression of alpha(1)-adrenoceptors on thymic cells and their role in fine tuning of thymopoiesis",
pages = "66-55",
number = "1-2",
volume = "214",
doi = "10.1016/j.jneuroim.2009.06.018",
url = "conv_112"
}
Pešić, V., Kosec, D., Radojević, K., Pilipović, I., Perišić, M., Vidić-Danković, B.,& Leposavić, G.. (2009). Expression of alpha(1)-adrenoceptors on thymic cells and their role in fine tuning of thymopoiesis. in Journal of Neuroimmunology
Elsevier Science Bv, Amsterdam., 214(1-2), 55-66.
https://doi.org/10.1016/j.jneuroim.2009.06.018
conv_112
Pešić V, Kosec D, Radojević K, Pilipović I, Perišić M, Vidić-Danković B, Leposavić G. Expression of alpha(1)-adrenoceptors on thymic cells and their role in fine tuning of thymopoiesis. in Journal of Neuroimmunology. 2009;214(1-2):55-66.
doi:10.1016/j.jneuroim.2009.06.018
conv_112 .
Pešić, Vesna, Kosec, Duško, Radojević, Katarina, Pilipović, Ivan, Perišić, Milica, Vidić-Danković, Biljana, Leposavić, Gordana, "Expression of alpha(1)-adrenoceptors on thymic cells and their role in fine tuning of thymopoiesis" in Journal of Neuroimmunology, 214, no. 1-2 (2009):55-66,
https://doi.org/10.1016/j.jneuroim.2009.06.018 .,
conv_112 .
15
15
15

Dysregulation of T-Cell Development in Adrenal Glucocorticoid-Deprived Rats

Stojić-Vukanić, Zorica; Rauški, Aleksandra; Kosec, Duško; Radojević, Katarina; Pilipović, Ivan; Leposavić, Gordana

(Sage Publications Ltd, London, 2009)

TY  - JOUR
AU  - Stojić-Vukanić, Zorica
AU  - Rauški, Aleksandra
AU  - Kosec, Duško
AU  - Radojević, Katarina
AU  - Pilipović, Ivan
AU  - Leposavić, Gordana
PY  - 2009
UR  - http://intor.torlakinstitut.com/handle/123456789/282
AB  - A number of different experimental approaches have been used to elucidate the impact: of basal levels of adrenal gland-derived glucocorticoids (GCs) on T cell development, and thereby T cell-mediated immune responses. However, the relevance of the adrenal GCs to T cell development is still far from clear. This study was undertaken to explore the relevance of basal levels of GCs to T cell differentiation/maturation. Eight days post-adrenalectomy in adult male rats the thymocyte yield, apoptotic and proliferative rate and the relationship amongst major thymocyte subsets, as defined by TCR alpha beta/CD4/CD8 expression, were examined using flow cytometry. Adrenal GC deprivation decreased thymocyte apoptosis and altered the kinetics of T cell differentiation/maturation. In the adrenalectomized rats there was increased thymic hypercellularity and an over-representation of the CD4+CD8+ double positive (DP) TCR alpha beta(low) cells entering selection, as well as increased numbers of their DP TCR alpha beta(-) immediate precursors. These changes were accompanied with under-representation of the postselected DP TCR alpha beta(high) and the most mature CD4-CD8+ and, particularly, CD4+CD8-single positive (SP) TCR alpha beta(high) cells. This data suggests that withdrawal of adrenal GCs produces alterations in the thymocyte selection processes, possibly affecting the diversity of functional T cell repertoire and generation of potentially self-reactive cells as indicated by the reduced proportion and number of CD4-CD8- double negative TCR alpha beta(high) cells. In addition, it indicates that GCs influence the post-selection maturation of thymocytes and plays a regulatory role in controlling the ratio of mature CD4+CD8-/CD4-CD8+ SP TCR alpha beta(high) cells. Exp Biol Med 234:1067-1074, 2009
PB  - Sage Publications Ltd, London
T2  - Experimental Biology and Medicine
T1  - Dysregulation of T-Cell Development in Adrenal Glucocorticoid-Deprived Rats
EP  - 1074
IS  - 9
SP  - 1067
VL  - 234
DO  - 10.3181/0902-RM-63
UR  - conv_240
ER  - 
@article{
author = "Stojić-Vukanić, Zorica and Rauški, Aleksandra and Kosec, Duško and Radojević, Katarina and Pilipović, Ivan and Leposavić, Gordana",
year = "2009",
abstract = "A number of different experimental approaches have been used to elucidate the impact: of basal levels of adrenal gland-derived glucocorticoids (GCs) on T cell development, and thereby T cell-mediated immune responses. However, the relevance of the adrenal GCs to T cell development is still far from clear. This study was undertaken to explore the relevance of basal levels of GCs to T cell differentiation/maturation. Eight days post-adrenalectomy in adult male rats the thymocyte yield, apoptotic and proliferative rate and the relationship amongst major thymocyte subsets, as defined by TCR alpha beta/CD4/CD8 expression, were examined using flow cytometry. Adrenal GC deprivation decreased thymocyte apoptosis and altered the kinetics of T cell differentiation/maturation. In the adrenalectomized rats there was increased thymic hypercellularity and an over-representation of the CD4+CD8+ double positive (DP) TCR alpha beta(low) cells entering selection, as well as increased numbers of their DP TCR alpha beta(-) immediate precursors. These changes were accompanied with under-representation of the postselected DP TCR alpha beta(high) and the most mature CD4-CD8+ and, particularly, CD4+CD8-single positive (SP) TCR alpha beta(high) cells. This data suggests that withdrawal of adrenal GCs produces alterations in the thymocyte selection processes, possibly affecting the diversity of functional T cell repertoire and generation of potentially self-reactive cells as indicated by the reduced proportion and number of CD4-CD8- double negative TCR alpha beta(high) cells. In addition, it indicates that GCs influence the post-selection maturation of thymocytes and plays a regulatory role in controlling the ratio of mature CD4+CD8-/CD4-CD8+ SP TCR alpha beta(high) cells. Exp Biol Med 234:1067-1074, 2009",
publisher = "Sage Publications Ltd, London",
journal = "Experimental Biology and Medicine",
title = "Dysregulation of T-Cell Development in Adrenal Glucocorticoid-Deprived Rats",
pages = "1074-1067",
number = "9",
volume = "234",
doi = "10.3181/0902-RM-63",
url = "conv_240"
}
Stojić-Vukanić, Z., Rauški, A., Kosec, D., Radojević, K., Pilipović, I.,& Leposavić, G.. (2009). Dysregulation of T-Cell Development in Adrenal Glucocorticoid-Deprived Rats. in Experimental Biology and Medicine
Sage Publications Ltd, London., 234(9), 1067-1074.
https://doi.org/10.3181/0902-RM-63
conv_240
Stojić-Vukanić Z, Rauški A, Kosec D, Radojević K, Pilipović I, Leposavić G. Dysregulation of T-Cell Development in Adrenal Glucocorticoid-Deprived Rats. in Experimental Biology and Medicine. 2009;234(9):1067-1074.
doi:10.3181/0902-RM-63
conv_240 .
Stojić-Vukanić, Zorica, Rauški, Aleksandra, Kosec, Duško, Radojević, Katarina, Pilipović, Ivan, Leposavić, Gordana, "Dysregulation of T-Cell Development in Adrenal Glucocorticoid-Deprived Rats" in Experimental Biology and Medicine, 234, no. 9 (2009):1067-1074,
https://doi.org/10.3181/0902-RM-63 .,
conv_240 .
13
13
12

The anti-inflammatory effect of neuropeptide Y (NPY) in rats is dependent on dipeptidyl peptidase 4 (DP4) activity and age

Dimitrijević, Mirjana; Stanojević, Stanislava; Mitić, Katarina; Kuštrimović, Nataša; Vujić, Vesna; Miletić, Tatjana; Kovačević-Jovanović, Vesna

(Elsevier Science Inc, New York, 2008)

TY  - JOUR
AU  - Dimitrijević, Mirjana
AU  - Stanojević, Stanislava
AU  - Mitić, Katarina
AU  - Kuštrimović, Nataša
AU  - Vujić, Vesna
AU  - Miletić, Tatjana
AU  - Kovačević-Jovanović, Vesna
PY  - 2008
UR  - http://intor.torlakinstitut.com/handle/123456789/243
AB  - Neuropeptide Y (NPY)-induced modulation of the immune and inflammatory responses is regulated by tissue-specific expression of different receptor subtypes (Y1-Y6) and the activity of the enzyme dipeptidyl peptidase 4 (DP4, CD26) which terminates the action of NPY on Y1 receptor subtype. The present study investigated the age-dependent effect of NPY on inflammatory paw edema and macrophage nitric oxide production in Dark Agouti rats exhibiting a high-plasma DP4 activity, as acknowledged earlier. The results showed that NPY suppressed paw edema in adult and aged, but not in young rats. Furthermore, plasma DP4 activity decreased, while macrophage DP4 activity, as well as macrophage CD26 expression increased with aging. The use of NPY-related peptides and Y receptor-specific antagonists revealed that anti-inflammatory effect of NPY is mediated via Y1 and Y5 receptors. NPY-induced suppression of paw edema in young rats following inhibition of DP4 additionally emphasized the role for Y1 receptor in the anti-inflammatory action of NPY. In contrast to the in vivo situation, NPY stimulated macrophage nitric oxide production in vitro only in young rats, and this effect was mediated via Y1 and Y2 receptors. It can be concluded that age-dependant modulation of inflammatory reactions by NPY is determined by plasma, but not macrophage DP4 activity at different ages. (c) 2008 Elsevier Inc. All rights reserved.
PB  - Elsevier Science Inc, New York
T2  - Peptides
T1  - The anti-inflammatory effect of neuropeptide Y (NPY) in rats is dependent on dipeptidyl peptidase 4 (DP4) activity and age
EP  - 2187
IS  - 12
SP  - 2179
VL  - 29
DO  - 10.1016/j.peptides.2008.08.017
UR  - conv_111
ER  - 
@article{
author = "Dimitrijević, Mirjana and Stanojević, Stanislava and Mitić, Katarina and Kuštrimović, Nataša and Vujić, Vesna and Miletić, Tatjana and Kovačević-Jovanović, Vesna",
year = "2008",
abstract = "Neuropeptide Y (NPY)-induced modulation of the immune and inflammatory responses is regulated by tissue-specific expression of different receptor subtypes (Y1-Y6) and the activity of the enzyme dipeptidyl peptidase 4 (DP4, CD26) which terminates the action of NPY on Y1 receptor subtype. The present study investigated the age-dependent effect of NPY on inflammatory paw edema and macrophage nitric oxide production in Dark Agouti rats exhibiting a high-plasma DP4 activity, as acknowledged earlier. The results showed that NPY suppressed paw edema in adult and aged, but not in young rats. Furthermore, plasma DP4 activity decreased, while macrophage DP4 activity, as well as macrophage CD26 expression increased with aging. The use of NPY-related peptides and Y receptor-specific antagonists revealed that anti-inflammatory effect of NPY is mediated via Y1 and Y5 receptors. NPY-induced suppression of paw edema in young rats following inhibition of DP4 additionally emphasized the role for Y1 receptor in the anti-inflammatory action of NPY. In contrast to the in vivo situation, NPY stimulated macrophage nitric oxide production in vitro only in young rats, and this effect was mediated via Y1 and Y2 receptors. It can be concluded that age-dependant modulation of inflammatory reactions by NPY is determined by plasma, but not macrophage DP4 activity at different ages. (c) 2008 Elsevier Inc. All rights reserved.",
publisher = "Elsevier Science Inc, New York",
journal = "Peptides",
title = "The anti-inflammatory effect of neuropeptide Y (NPY) in rats is dependent on dipeptidyl peptidase 4 (DP4) activity and age",
pages = "2187-2179",
number = "12",
volume = "29",
doi = "10.1016/j.peptides.2008.08.017",
url = "conv_111"
}
Dimitrijević, M., Stanojević, S., Mitić, K., Kuštrimović, N., Vujić, V., Miletić, T.,& Kovačević-Jovanović, V.. (2008). The anti-inflammatory effect of neuropeptide Y (NPY) in rats is dependent on dipeptidyl peptidase 4 (DP4) activity and age. in Peptides
Elsevier Science Inc, New York., 29(12), 2179-2187.
https://doi.org/10.1016/j.peptides.2008.08.017
conv_111
Dimitrijević M, Stanojević S, Mitić K, Kuštrimović N, Vujić V, Miletić T, Kovačević-Jovanović V. The anti-inflammatory effect of neuropeptide Y (NPY) in rats is dependent on dipeptidyl peptidase 4 (DP4) activity and age. in Peptides. 2008;29(12):2179-2187.
doi:10.1016/j.peptides.2008.08.017
conv_111 .
Dimitrijević, Mirjana, Stanojević, Stanislava, Mitić, Katarina, Kuštrimović, Nataša, Vujić, Vesna, Miletić, Tatjana, Kovačević-Jovanović, Vesna, "The anti-inflammatory effect of neuropeptide Y (NPY) in rats is dependent on dipeptidyl peptidase 4 (DP4) activity and age" in Peptides, 29, no. 12 (2008):2179-2187,
https://doi.org/10.1016/j.peptides.2008.08.017 .,
conv_111 .
40
37
40

Methionine-enkephalin modulation of hydrogen peroxide (H2O2) release by rat peritoneal macrophages involves different types of opioid receptors

Stanojević, Stanislava; Vujić, Vesna; Mitić, Katarina; Kuštrimović, Nataša; Kovačević-Jovanović, Vesna; Miletić, Tatjana; Dimitrijević, Mirjana

(Churchill Livingstone, Edinburgh, 2008)

TY  - JOUR
AU  - Stanojević, Stanislava
AU  - Vujić, Vesna
AU  - Mitić, Katarina
AU  - Kuštrimović, Nataša
AU  - Kovačević-Jovanović, Vesna
AU  - Miletić, Tatjana
AU  - Dimitrijević, Mirjana
PY  - 2008
UR  - http://intor.torlakinstitut.com/handle/123456789/259
AB  - We investigated the involvement of specific types of opioid receptors in methionine-enkephalin (MET)-induced modulation of hydrogen peroxide (H2O2) release by rat macrophages primed with sub-optimal concentrations of phorbol myristate acetate (PMA). Peritoneal macrophages in vitro treated with different concentrations of MET were tested for H2O2 release in phenol red assay. In the antagonistic study macrophages were treated with MET and one opioid receptor antagonist, or combination of MET and two or three opioid receptor antagonists. MET decreased H2O2 release in eight individual macrophage samples, and increased it in 10 samples. The increase of H2O2 release induced by MET in macrophages was blocked with combination of opioid receptor antagonists specific delta(1,2) and mu receptors, as well as with combination of antagonists specific for delta(1,2) and kappa opioid receptors. MET-induced decrease of the H2O2 release in macrophages was prevented by opioid receptor antagonists specific for delta(1,2) or mu receptors, and also with combination of two or three opioid receptor antagonists. MET-induced enhancement of H2O2 release was mediated via delta(1) or delta(2) opioid receptor subtypes, or by mu-kappa opioid receptor functional interactions, while MET-induced suppression involved functional interactions between delta(1) and mu, delta(2) and mu, or delta(1) and kappa opioid receptors. It is possible that individual differences in basal or induced macrophage capacity to produce H2O2 might shape the repertoire of opioid receptors expression and in that way pre-determine the direction of MET-induced changes after the in vitro treatment. (c) 2007 Elsevier Ltd. All rights reserved.
PB  - Churchill Livingstone, Edinburgh
T2  - Neuropeptides
T1  - Methionine-enkephalin modulation of hydrogen peroxide (H2O2) release by rat peritoneal macrophages involves different types of opioid receptors
EP  - 158
IS  - 2
SP  - 147
VL  - 42
DO  - 10.1016/j.npep.2007.12.004
UR  - conv_206
ER  - 
@article{
author = "Stanojević, Stanislava and Vujić, Vesna and Mitić, Katarina and Kuštrimović, Nataša and Kovačević-Jovanović, Vesna and Miletić, Tatjana and Dimitrijević, Mirjana",
year = "2008",
abstract = "We investigated the involvement of specific types of opioid receptors in methionine-enkephalin (MET)-induced modulation of hydrogen peroxide (H2O2) release by rat macrophages primed with sub-optimal concentrations of phorbol myristate acetate (PMA). Peritoneal macrophages in vitro treated with different concentrations of MET were tested for H2O2 release in phenol red assay. In the antagonistic study macrophages were treated with MET and one opioid receptor antagonist, or combination of MET and two or three opioid receptor antagonists. MET decreased H2O2 release in eight individual macrophage samples, and increased it in 10 samples. The increase of H2O2 release induced by MET in macrophages was blocked with combination of opioid receptor antagonists specific delta(1,2) and mu receptors, as well as with combination of antagonists specific for delta(1,2) and kappa opioid receptors. MET-induced decrease of the H2O2 release in macrophages was prevented by opioid receptor antagonists specific for delta(1,2) or mu receptors, and also with combination of two or three opioid receptor antagonists. MET-induced enhancement of H2O2 release was mediated via delta(1) or delta(2) opioid receptor subtypes, or by mu-kappa opioid receptor functional interactions, while MET-induced suppression involved functional interactions between delta(1) and mu, delta(2) and mu, or delta(1) and kappa opioid receptors. It is possible that individual differences in basal or induced macrophage capacity to produce H2O2 might shape the repertoire of opioid receptors expression and in that way pre-determine the direction of MET-induced changes after the in vitro treatment. (c) 2007 Elsevier Ltd. All rights reserved.",
publisher = "Churchill Livingstone, Edinburgh",
journal = "Neuropeptides",
title = "Methionine-enkephalin modulation of hydrogen peroxide (H2O2) release by rat peritoneal macrophages involves different types of opioid receptors",
pages = "158-147",
number = "2",
volume = "42",
doi = "10.1016/j.npep.2007.12.004",
url = "conv_206"
}
Stanojević, S., Vujić, V., Mitić, K., Kuštrimović, N., Kovačević-Jovanović, V., Miletić, T.,& Dimitrijević, M.. (2008). Methionine-enkephalin modulation of hydrogen peroxide (H2O2) release by rat peritoneal macrophages involves different types of opioid receptors. in Neuropeptides
Churchill Livingstone, Edinburgh., 42(2), 147-158.
https://doi.org/10.1016/j.npep.2007.12.004
conv_206
Stanojević S, Vujić V, Mitić K, Kuštrimović N, Kovačević-Jovanović V, Miletić T, Dimitrijević M. Methionine-enkephalin modulation of hydrogen peroxide (H2O2) release by rat peritoneal macrophages involves different types of opioid receptors. in Neuropeptides. 2008;42(2):147-158.
doi:10.1016/j.npep.2007.12.004
conv_206 .
Stanojević, Stanislava, Vujić, Vesna, Mitić, Katarina, Kuštrimović, Nataša, Kovačević-Jovanović, Vesna, Miletić, Tatjana, Dimitrijević, Mirjana, "Methionine-enkephalin modulation of hydrogen peroxide (H2O2) release by rat peritoneal macrophages involves different types of opioid receptors" in Neuropeptides, 42, no. 2 (2008):147-158,
https://doi.org/10.1016/j.npep.2007.12.004 .,
conv_206 .
18
19
18

The effects of corticosterone and beta-endorphin on adherence, phagocytosis and hydrogen peroxide production of macrophages isolated from Dark Agouti rats exposed to acute stress

Stanojević, Stanislava; Kuštrimović, Nataša; Mitić, Katarina; Miletić, Tatjana; Vujić, Vesna; Kovačević-Jovanović, Vesna; Dimitrijević, Mirjana

(Karger, Basel, 2008)

TY  - JOUR
AU  - Stanojević, Stanislava
AU  - Kuštrimović, Nataša
AU  - Mitić, Katarina
AU  - Miletić, Tatjana
AU  - Vujić, Vesna
AU  - Kovačević-Jovanović, Vesna
AU  - Dimitrijević, Mirjana
PY  - 2008
UR  - http://intor.torlakinstitut.com/handle/123456789/260
AB  - Background: Given that stressful experiences can change the reaction to a subsequent exposure to stress, we tested the in vitro effects of the stress mediator corticosterone and the opioid peptide beta-endorphin on the function of macrophages isolated from control rats and from rats exposed to electric tail shock stress (ES) or a stress-witnessing procedure (SW) 24 h earlier. Methods: Peritoneal macrophages isolated from control and stressed rats of the Dark Agouti (DA) strain were treated in vitro with corticosterone or beta-endorphin and tested for adherence, phagocytosis and hydrogen peroxide release. Results: ES diminished adherence and SW decreased phagocytosis. The suppressive effect of corticosterone on phagocytosis was absent in rats exposed to ES and SW, while the suppressive effect of beta-endorphin on adherence was not observed in rats exposed to SW. ES and SW did not affect H2O2 release, neither directly nor indirectly by changing macrophage response to corticosterone and beta-endorphin in this test. Conclusions: In DA rats early macrophage activation steps, i.e. adherence and phagocytosis, were more sensitive to stress than their effector function, corresponding to H2O2 production. We suggest that neuroendocrine mediators of stress that converge on macrophages might have changed specific macrophage receptors or postreceptor events and alter their response to artificial stressors, represented by corticosterone and beta-endorphin in vitro. Copyright (C) 2008 S. Karger AG, Basel.
PB  - Karger, Basel
T2  - Neuroimmunomodulation
T1  - The effects of corticosterone and beta-endorphin on adherence, phagocytosis and hydrogen peroxide production of macrophages isolated from Dark Agouti rats exposed to acute stress
EP  - 116
IS  - 2
SP  - 108
VL  - 15
DO  - 10.1159/000148193
UR  - conv_220
ER  - 
@article{
author = "Stanojević, Stanislava and Kuštrimović, Nataša and Mitić, Katarina and Miletić, Tatjana and Vujić, Vesna and Kovačević-Jovanović, Vesna and Dimitrijević, Mirjana",
year = "2008",
abstract = "Background: Given that stressful experiences can change the reaction to a subsequent exposure to stress, we tested the in vitro effects of the stress mediator corticosterone and the opioid peptide beta-endorphin on the function of macrophages isolated from control rats and from rats exposed to electric tail shock stress (ES) or a stress-witnessing procedure (SW) 24 h earlier. Methods: Peritoneal macrophages isolated from control and stressed rats of the Dark Agouti (DA) strain were treated in vitro with corticosterone or beta-endorphin and tested for adherence, phagocytosis and hydrogen peroxide release. Results: ES diminished adherence and SW decreased phagocytosis. The suppressive effect of corticosterone on phagocytosis was absent in rats exposed to ES and SW, while the suppressive effect of beta-endorphin on adherence was not observed in rats exposed to SW. ES and SW did not affect H2O2 release, neither directly nor indirectly by changing macrophage response to corticosterone and beta-endorphin in this test. Conclusions: In DA rats early macrophage activation steps, i.e. adherence and phagocytosis, were more sensitive to stress than their effector function, corresponding to H2O2 production. We suggest that neuroendocrine mediators of stress that converge on macrophages might have changed specific macrophage receptors or postreceptor events and alter their response to artificial stressors, represented by corticosterone and beta-endorphin in vitro. Copyright (C) 2008 S. Karger AG, Basel.",
publisher = "Karger, Basel",
journal = "Neuroimmunomodulation",
title = "The effects of corticosterone and beta-endorphin on adherence, phagocytosis and hydrogen peroxide production of macrophages isolated from Dark Agouti rats exposed to acute stress",
pages = "116-108",
number = "2",
volume = "15",
doi = "10.1159/000148193",
url = "conv_220"
}
Stanojević, S., Kuštrimović, N., Mitić, K., Miletić, T., Vujić, V., Kovačević-Jovanović, V.,& Dimitrijević, M.. (2008). The effects of corticosterone and beta-endorphin on adherence, phagocytosis and hydrogen peroxide production of macrophages isolated from Dark Agouti rats exposed to acute stress. in Neuroimmunomodulation
Karger, Basel., 15(2), 108-116.
https://doi.org/10.1159/000148193
conv_220
Stanojević S, Kuštrimović N, Mitić K, Miletić T, Vujić V, Kovačević-Jovanović V, Dimitrijević M. The effects of corticosterone and beta-endorphin on adherence, phagocytosis and hydrogen peroxide production of macrophages isolated from Dark Agouti rats exposed to acute stress. in Neuroimmunomodulation. 2008;15(2):108-116.
doi:10.1159/000148193
conv_220 .
Stanojević, Stanislava, Kuštrimović, Nataša, Mitić, Katarina, Miletić, Tatjana, Vujić, Vesna, Kovačević-Jovanović, Vesna, Dimitrijević, Mirjana, "The effects of corticosterone and beta-endorphin on adherence, phagocytosis and hydrogen peroxide production of macrophages isolated from Dark Agouti rats exposed to acute stress" in Neuroimmunomodulation, 15, no. 2 (2008):108-116,
https://doi.org/10.1159/000148193 .,
conv_220 .
8
9
9

Sexual dimorphism in the catecholamine-containing thymus microenvironment: A role for gonadal hormones

Pilipović, Ivan; Vidić-Danković, Biljana; Perišić, Milica; Radojević, Katarina; Colić, Miodrag; Todorović, Vera; Leposavić, Gordana

(Elsevier Science Bv, Amsterdam, 2008)

TY  - JOUR
AU  - Pilipović, Ivan
AU  - Vidić-Danković, Biljana
AU  - Perišić, Milica
AU  - Radojević, Katarina
AU  - Colić, Miodrag
AU  - Todorović, Vera
AU  - Leposavić, Gordana
PY  - 2008
UR  - http://intor.torlakinstitut.com/handle/123456789/250
AB  - The study was undertaken to explore whether there were: i) apart from neural and circulatory, some other sources of catecholamines (CAs) in rat thymus and ii) gender-specific differences in thymic CA levels, and if so to elucidate the role of sex steroids in this phenomenon. Tyrosine hydroxylase (TH) immunoreactivity was found in thymocytes and thymic epithelial cells (some of which showed morphological features of nurse cells). The density of CA-synthesizing cells was greater in male than in female rats. Noradrenaline (NA), but not dopamine (DA), was detected in thymocytes. NA and DA levels in thymi, and the NA level in thymocytes, were higher in male rats. To explore the Putative role of sex steroids in this dichotomy in the thymi of adult rats gonadectomized (Gx) or sham-Gx at the age of 30 days the density of TH+ cells and CA levels were measured. Gonadectomy abolished sexual dimorphism in the density of thymic TH+ cells (diminishing their density in male rats) and thymic CA levels (the NA levels were reduced in rats of both sexes and also the DA level in male rats). Therefore, it can be assumed that testicular and ovarian hormones control thymic NA and DA levels via different mechanisms. Moreover, in Gx rats, despite the decrease in the overall thymic NA level, an increase in the thymocyte NA level was found indicating that gonadal hormones exert differential effects on the NA level in distinct thymic cellular compartments. (C) 2007 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Neuroimmunology
T1  - Sexual dimorphism in the catecholamine-containing thymus microenvironment: A role for gonadal hormones
EP  - 20
IS  - 1-2
SP  - 7
VL  - 195
DO  - 10.1016/j.jneuroim.2007.12.006
UR  - conv_207
ER  - 
@article{
author = "Pilipović, Ivan and Vidić-Danković, Biljana and Perišić, Milica and Radojević, Katarina and Colić, Miodrag and Todorović, Vera and Leposavić, Gordana",
year = "2008",
abstract = "The study was undertaken to explore whether there were: i) apart from neural and circulatory, some other sources of catecholamines (CAs) in rat thymus and ii) gender-specific differences in thymic CA levels, and if so to elucidate the role of sex steroids in this phenomenon. Tyrosine hydroxylase (TH) immunoreactivity was found in thymocytes and thymic epithelial cells (some of which showed morphological features of nurse cells). The density of CA-synthesizing cells was greater in male than in female rats. Noradrenaline (NA), but not dopamine (DA), was detected in thymocytes. NA and DA levels in thymi, and the NA level in thymocytes, were higher in male rats. To explore the Putative role of sex steroids in this dichotomy in the thymi of adult rats gonadectomized (Gx) or sham-Gx at the age of 30 days the density of TH+ cells and CA levels were measured. Gonadectomy abolished sexual dimorphism in the density of thymic TH+ cells (diminishing their density in male rats) and thymic CA levels (the NA levels were reduced in rats of both sexes and also the DA level in male rats). Therefore, it can be assumed that testicular and ovarian hormones control thymic NA and DA levels via different mechanisms. Moreover, in Gx rats, despite the decrease in the overall thymic NA level, an increase in the thymocyte NA level was found indicating that gonadal hormones exert differential effects on the NA level in distinct thymic cellular compartments. (C) 2007 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Neuroimmunology",
title = "Sexual dimorphism in the catecholamine-containing thymus microenvironment: A role for gonadal hormones",
pages = "20-7",
number = "1-2",
volume = "195",
doi = "10.1016/j.jneuroim.2007.12.006",
url = "conv_207"
}
Pilipović, I., Vidić-Danković, B., Perišić, M., Radojević, K., Colić, M., Todorović, V.,& Leposavić, G.. (2008). Sexual dimorphism in the catecholamine-containing thymus microenvironment: A role for gonadal hormones. in Journal of Neuroimmunology
Elsevier Science Bv, Amsterdam., 195(1-2), 7-20.
https://doi.org/10.1016/j.jneuroim.2007.12.006
conv_207
Pilipović I, Vidić-Danković B, Perišić M, Radojević K, Colić M, Todorović V, Leposavić G. Sexual dimorphism in the catecholamine-containing thymus microenvironment: A role for gonadal hormones. in Journal of Neuroimmunology. 2008;195(1-2):7-20.
doi:10.1016/j.jneuroim.2007.12.006
conv_207 .
Pilipović, Ivan, Vidić-Danković, Biljana, Perišić, Milica, Radojević, Katarina, Colić, Miodrag, Todorović, Vera, Leposavić, Gordana, "Sexual dimorphism in the catecholamine-containing thymus microenvironment: A role for gonadal hormones" in Journal of Neuroimmunology, 195, no. 1-2 (2008):7-20,
https://doi.org/10.1016/j.jneuroim.2007.12.006 .,
conv_207 .
29
29
31

Catecholamines as immunomodulators: A role for adrenoceptor-mediated mechanisms in fine tuning of T-cell development

Leposavić, Gordana; Pilipović, Ivan; Radojević, Katarina; Pešić, Vesna; Perišić, Milica; Kosec, Duško

(Elsevier Science Bv, Amsterdam, 2008)

TY  - JOUR
AU  - Leposavić, Gordana
AU  - Pilipović, Ivan
AU  - Radojević, Katarina
AU  - Pešić, Vesna
AU  - Perišić, Milica
AU  - Kosec, Duško
PY  - 2008
UR  - http://intor.torlakinstitut.com/handle/123456789/244
AB  - In its simplest form, effective T cell-mediated immunity emanates from the expansion of specific T cells activated tit response to antigen. In establishing and maintaining the peripheral T-cell pool, the thymus plays a critical role. It does so by providing a microenvironment within which T cell precursors proliferate, differentiate and Undergo selection processes to create a fully functional population of major histocompatibility complex restricted, self-tolerant T cells. The control of the thymic function involves intrathymic, as well as sympathetic nervous and endocrine system signalling. In addition to postganglionic noradrenergic fibres, both thymic lymphoid and non-lymphoid cells, including epithelial cells and macrophages. have been demo nstrated to express tyrosine hydroxylase (TH), and Suggested to form a local non-neural catecholaminergic cell network. A higher level of noradrenaline has been found in male than in female rat thymi. and a role of,gonadal hormones ill providing this dimorphism has been demonstrated. In addition, thymic lymphoid and non-lymphoid cells, including those expressing TH, have been found to bear beta- and alpha(1)-adrenoceptors (ARs) and a role of gonadal hormones in regulation of, at least. beta-AR density and signalling has been Suggested. These findings have also entailed conclusion that catecholamiens (CAs) influence T-cell development, not only via neurocrine/endocrine, but also via autocrine/paracrine action. Generally, CAs have been shown to exert an inhibitory influence on thymopoiesis. Role of alpha(1)- and beta-R-mediated mechanisms in maintaining thymic homeostasis and in fine tuning of both conventional and regulatory T-cell development is discussed in the Manuscript. (C) 2008 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - Autonomic Neuroscience-Basic & Clinical
T1  - Catecholamines as immunomodulators: A role for adrenoceptor-mediated mechanisms in fine tuning of T-cell development
EP  - 12
IS  - 1-2
SP  - 1
VL  - 144
DO  - 10.1016/j.autneu.2008.09.003
UR  - conv_225
ER  - 
@article{
author = "Leposavić, Gordana and Pilipović, Ivan and Radojević, Katarina and Pešić, Vesna and Perišić, Milica and Kosec, Duško",
year = "2008",
abstract = "In its simplest form, effective T cell-mediated immunity emanates from the expansion of specific T cells activated tit response to antigen. In establishing and maintaining the peripheral T-cell pool, the thymus plays a critical role. It does so by providing a microenvironment within which T cell precursors proliferate, differentiate and Undergo selection processes to create a fully functional population of major histocompatibility complex restricted, self-tolerant T cells. The control of the thymic function involves intrathymic, as well as sympathetic nervous and endocrine system signalling. In addition to postganglionic noradrenergic fibres, both thymic lymphoid and non-lymphoid cells, including epithelial cells and macrophages. have been demo nstrated to express tyrosine hydroxylase (TH), and Suggested to form a local non-neural catecholaminergic cell network. A higher level of noradrenaline has been found in male than in female rat thymi. and a role of,gonadal hormones ill providing this dimorphism has been demonstrated. In addition, thymic lymphoid and non-lymphoid cells, including those expressing TH, have been found to bear beta- and alpha(1)-adrenoceptors (ARs) and a role of gonadal hormones in regulation of, at least. beta-AR density and signalling has been Suggested. These findings have also entailed conclusion that catecholamiens (CAs) influence T-cell development, not only via neurocrine/endocrine, but also via autocrine/paracrine action. Generally, CAs have been shown to exert an inhibitory influence on thymopoiesis. Role of alpha(1)- and beta-R-mediated mechanisms in maintaining thymic homeostasis and in fine tuning of both conventional and regulatory T-cell development is discussed in the Manuscript. (C) 2008 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Autonomic Neuroscience-Basic & Clinical",
title = "Catecholamines as immunomodulators: A role for adrenoceptor-mediated mechanisms in fine tuning of T-cell development",
pages = "12-1",
number = "1-2",
volume = "144",
doi = "10.1016/j.autneu.2008.09.003",
url = "conv_225"
}
Leposavić, G., Pilipović, I., Radojević, K., Pešić, V., Perišić, M.,& Kosec, D.. (2008). Catecholamines as immunomodulators: A role for adrenoceptor-mediated mechanisms in fine tuning of T-cell development. in Autonomic Neuroscience-Basic & Clinical
Elsevier Science Bv, Amsterdam., 144(1-2), 1-12.
https://doi.org/10.1016/j.autneu.2008.09.003
conv_225
Leposavić G, Pilipović I, Radojević K, Pešić V, Perišić M, Kosec D. Catecholamines as immunomodulators: A role for adrenoceptor-mediated mechanisms in fine tuning of T-cell development. in Autonomic Neuroscience-Basic & Clinical. 2008;144(1-2):1-12.
doi:10.1016/j.autneu.2008.09.003
conv_225 .
Leposavić, Gordana, Pilipović, Ivan, Radojević, Katarina, Pešić, Vesna, Perišić, Milica, Kosec, Duško, "Catecholamines as immunomodulators: A role for adrenoceptor-mediated mechanisms in fine tuning of T-cell development" in Autonomic Neuroscience-Basic & Clinical, 144, no. 1-2 (2008):1-12,
https://doi.org/10.1016/j.autneu.2008.09.003 .,
conv_225 .
46
46
48

Age-Associated Remodeling of Thymopoiesis: Role for Gonadal Hormones and Catecholamines

Leposavić, Gordana; Perišić, Milica

(Karger, Basel, 2008)

TY  - JOUR
AU  - Leposavić, Gordana
AU  - Perišić, Milica
PY  - 2008
UR  - http://intor.torlakinstitut.com/handle/123456789/268
AB  - The present review summarizes recent data on age-related thymic changes termed thymic involution, and highlights the putative role of perturbances in extrathymical and, possibly, intrathymical production of gonadal steroids and catecholamines in this process. Thymic involution has been envisaged as an extremely complex process involving multifactorial mechanisms along the bone marrow-thymic axis that accounts for the major manifestations of immunosenescence. These mechanisms include basic cell aging processes (for example, cell replication and programmed cell death) and processes unique to the immune system (such as generation of the T cell receptor repertoire and control of potentially autoreactive cells). Given that the onset of age-associated thymic involution coincides with the rise in gonadal steroid levels at puberty, a causal link between these events has been suggested. It has been shown that: (1) peripubertal gonadectomy causes substantial decrease in the level of noradrenaline in adult male and female thymus and (2) catecholamines, acting via alpha- and beta-adrenoceptor, produce suppressive effects on the thymic cellularity and production of both effector and regulatory T cells. Furthermore, the possibility that gonadal steroids contribute to thymic involution is discussed in this paper. In light of recent data indicating that effects of gonadal hormone deprivation on the thymic cellularity and function are long lasting but transitory, a putative role for the intrathymic sex steroid/catecholamine production in assuring the organ involution, under conditions of their limited supply by extrathymic sources, is also considered. Copyright (C) 2008 S. Karger AG, Basel
PB  - Karger, Basel
T2  - Neuroimmunomodulation
T1  - Age-Associated Remodeling of Thymopoiesis: Role for Gonadal Hormones and Catecholamines
EP  - 322
IS  - 4-6
SP  - 290
VL  - 15
DO  - 10.1159/000156473
UR  - conv_222
ER  - 
@article{
author = "Leposavić, Gordana and Perišić, Milica",
year = "2008",
abstract = "The present review summarizes recent data on age-related thymic changes termed thymic involution, and highlights the putative role of perturbances in extrathymical and, possibly, intrathymical production of gonadal steroids and catecholamines in this process. Thymic involution has been envisaged as an extremely complex process involving multifactorial mechanisms along the bone marrow-thymic axis that accounts for the major manifestations of immunosenescence. These mechanisms include basic cell aging processes (for example, cell replication and programmed cell death) and processes unique to the immune system (such as generation of the T cell receptor repertoire and control of potentially autoreactive cells). Given that the onset of age-associated thymic involution coincides with the rise in gonadal steroid levels at puberty, a causal link between these events has been suggested. It has been shown that: (1) peripubertal gonadectomy causes substantial decrease in the level of noradrenaline in adult male and female thymus and (2) catecholamines, acting via alpha- and beta-adrenoceptor, produce suppressive effects on the thymic cellularity and production of both effector and regulatory T cells. Furthermore, the possibility that gonadal steroids contribute to thymic involution is discussed in this paper. In light of recent data indicating that effects of gonadal hormone deprivation on the thymic cellularity and function are long lasting but transitory, a putative role for the intrathymic sex steroid/catecholamine production in assuring the organ involution, under conditions of their limited supply by extrathymic sources, is also considered. Copyright (C) 2008 S. Karger AG, Basel",
publisher = "Karger, Basel",
journal = "Neuroimmunomodulation",
title = "Age-Associated Remodeling of Thymopoiesis: Role for Gonadal Hormones and Catecholamines",
pages = "322-290",
number = "4-6",
volume = "15",
doi = "10.1159/000156473",
url = "conv_222"
}
Leposavić, G.,& Perišić, M.. (2008). Age-Associated Remodeling of Thymopoiesis: Role for Gonadal Hormones and Catecholamines. in Neuroimmunomodulation
Karger, Basel., 15(4-6), 290-322.
https://doi.org/10.1159/000156473
conv_222
Leposavić G, Perišić M. Age-Associated Remodeling of Thymopoiesis: Role for Gonadal Hormones and Catecholamines. in Neuroimmunomodulation. 2008;15(4-6):290-322.
doi:10.1159/000156473
conv_222 .
Leposavić, Gordana, Perišić, Milica, "Age-Associated Remodeling of Thymopoiesis: Role for Gonadal Hormones and Catecholamines" in Neuroimmunomodulation, 15, no. 4-6 (2008):290-322,
https://doi.org/10.1159/000156473 .,
conv_222 .
1
37
37
37

The influence of stress and methionine-enkephalin on macrophage functions in two inbred rat strains

Stanojević, Stanislava; Mitić, Katarina; Vujić, Vesna; Kovačević-Jovanović, Vesna; Dimitrijević, Mirjana

(Pergamon-Elsevier Science Ltd, Oxford, 2007)

TY  - JOUR
AU  - Stanojević, Stanislava
AU  - Mitić, Katarina
AU  - Vujić, Vesna
AU  - Kovačević-Jovanović, Vesna
AU  - Dimitrijević, Mirjana
PY  - 2007
UR  - http://intor.torlakinstitut.com/handle/123456789/228
AB  - The aim of our current study was to investigate the effect of acute exposure to electric tail shock stress (ES) and to a stress witnessing procedure (SW), as models for physical and psychological stress paradigms, respectively, on phagocytosis and H2O2 production in peritoneal macrophages isolated from Albino Oxford (AO) and Dark Agouti (DA) rats. In addition, we studied the in vitro effects of methionine-enkephalin (ME) on phagocytosis and H2O2 production in peritoneal macrophages isolated from both AO and DA rats that had been exposed to ES and SW procedures. The results showed that peritoneal macrophages isolated from DA rats were less sensitive to the suppressive effects of ES and SW than macrophages isolated from AO rats. In vitro treatment of macrophages isolated from AO rats with ME mimicked to some extent the suppressive effects of ES and SW on phagocytosis and H2O2 production and additionally diminished H2O2 release in macrophages isolated from AO rats previously exposed to ES or SW ME did not have any effect on phagocytosis in macrophages isolated from DA rats, but changed H2O2 production in a concentration-dependent manner. In macrophages isolated from DA rats previously exposed to stress the effect of ME was dependent on the macrophage function tested and the particular stress paradigm employed. Our results emphasise the fact that both beneficial and detrimental effects of stress on immune system functions could be attributed to the individual variations in the macrophage's response to stress mediators. (c) 2006 Elsevier Inc. All rights reserved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Life Sciences
T1  - The influence of stress and methionine-enkephalin on macrophage functions in two inbred rat strains
EP  - 909
IS  - 10
SP  - 901
VL  - 80
DO  - 10.1016/j.lfs.2006.11.019
UR  - conv_190
ER  - 
@article{
author = "Stanojević, Stanislava and Mitić, Katarina and Vujić, Vesna and Kovačević-Jovanović, Vesna and Dimitrijević, Mirjana",
year = "2007",
abstract = "The aim of our current study was to investigate the effect of acute exposure to electric tail shock stress (ES) and to a stress witnessing procedure (SW), as models for physical and psychological stress paradigms, respectively, on phagocytosis and H2O2 production in peritoneal macrophages isolated from Albino Oxford (AO) and Dark Agouti (DA) rats. In addition, we studied the in vitro effects of methionine-enkephalin (ME) on phagocytosis and H2O2 production in peritoneal macrophages isolated from both AO and DA rats that had been exposed to ES and SW procedures. The results showed that peritoneal macrophages isolated from DA rats were less sensitive to the suppressive effects of ES and SW than macrophages isolated from AO rats. In vitro treatment of macrophages isolated from AO rats with ME mimicked to some extent the suppressive effects of ES and SW on phagocytosis and H2O2 production and additionally diminished H2O2 release in macrophages isolated from AO rats previously exposed to ES or SW ME did not have any effect on phagocytosis in macrophages isolated from DA rats, but changed H2O2 production in a concentration-dependent manner. In macrophages isolated from DA rats previously exposed to stress the effect of ME was dependent on the macrophage function tested and the particular stress paradigm employed. Our results emphasise the fact that both beneficial and detrimental effects of stress on immune system functions could be attributed to the individual variations in the macrophage's response to stress mediators. (c) 2006 Elsevier Inc. All rights reserved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Life Sciences",
title = "The influence of stress and methionine-enkephalin on macrophage functions in two inbred rat strains",
pages = "909-901",
number = "10",
volume = "80",
doi = "10.1016/j.lfs.2006.11.019",
url = "conv_190"
}
Stanojević, S., Mitić, K., Vujić, V., Kovačević-Jovanović, V.,& Dimitrijević, M.. (2007). The influence of stress and methionine-enkephalin on macrophage functions in two inbred rat strains. in Life Sciences
Pergamon-Elsevier Science Ltd, Oxford., 80(10), 901-909.
https://doi.org/10.1016/j.lfs.2006.11.019
conv_190
Stanojević S, Mitić K, Vujić V, Kovačević-Jovanović V, Dimitrijević M. The influence of stress and methionine-enkephalin on macrophage functions in two inbred rat strains. in Life Sciences. 2007;80(10):901-909.
doi:10.1016/j.lfs.2006.11.019
conv_190 .
Stanojević, Stanislava, Mitić, Katarina, Vujić, Vesna, Kovačević-Jovanović, Vesna, Dimitrijević, Mirjana, "The influence of stress and methionine-enkephalin on macrophage functions in two inbred rat strains" in Life Sciences, 80, no. 10 (2007):901-909,
https://doi.org/10.1016/j.lfs.2006.11.019 .,
conv_190 .
3
17
17
18