Vujnović, I.

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  • Vujnović, I. (2)
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Noradrenaline synthesized locally in draining lymph node cells modulates CD4+ T-cell development in rat EAE model: a role for a1-adrenoceptor

Pilipović, Ivan; Vujnović, I.; Petrović, Raisa; Kosec, Duško; Stojić-Vukanić, Z.; Leposavić, Gordana

(2018)

TY  - CONF
AU  - Pilipović, Ivan
AU  - Vujnović, I.
AU  - Petrović, Raisa
AU  - Kosec, Duško
AU  - Stojić-Vukanić, Z.
AU  - Leposavić, Gordana
PY  - 2018
UR  - http://intor.torlakinstitut.com/handle/123456789/853
AB  - Introduction: It has been suggested that: i) noradrenaline synthesis in ,,adrenergic“ immune cells changes during development of EAE and multiple sclerosis and ii) noradrenaline influences EAE development through a1−adrenoceptor. To elucidate mechanisms standing behind this phenomenon, a1−adrenoceptor−mediated influence of draining lymph node (dLN) cell−derived noradrenaline on CD4+ T−cell response in dLNs from Dark Agouti rats of both sexes immunized for EAE was examined. Methods: Cells recovered from dLNs on 7th day post−immunization were examined for noradrenaline synthesis/content and a1B−adrenoceptor expression using HPLC and/or flow cytometry. Additionally, effects of prazosin (a1- AR blocker) on CD4+ T−cell proliferation, the frequency of IL−17+ CD4+ T−cells and regulatory (Foxp3+CD25+) CD4+ T−cells (Tregs), activational/maturational molecule expression on antigen presenting cells (APCs) and their cytokine profile in dLN cell culture were examined using flow cytometry and/or qRT−PCR/ELISA. Results: Irrespective of sex, conventional CD4+ T−cells and Tregs, and APCs from rat dLNs synthesized noradrenaline, while only Tregs and APCs expressed a1B-adrenoceptor.
In myelin basic protein−stimulated dLN cell cultures from rats of both sexes prazosin increased Treg frequency and Foxp3 expression, but diminished co−stimulatory CD80 and CD86
molecule expression on APCs, thereby reducing CD4+ cell proliferation.
C3  - Abstracts of the 5th European Congress of Immunology - ECI 2018 - Amsterdam, The Netherlands
T1  - Noradrenaline synthesized locally in draining lymph node cells modulates CD4+ T-cell development in rat EAE model: a role for a1-adrenoceptor
SP  - P.A5.06.15
UR  - https://hdl.handle.net/21.15107/rcub_intor_853
ER  - 
@conference{
author = "Pilipović, Ivan and Vujnović, I. and Petrović, Raisa and Kosec, Duško and Stojić-Vukanić, Z. and Leposavić, Gordana",
year = "2018",
abstract = "Introduction: It has been suggested that: i) noradrenaline synthesis in ,,adrenergic“ immune cells changes during development of EAE and multiple sclerosis and ii) noradrenaline influences EAE development through a1−adrenoceptor. To elucidate mechanisms standing behind this phenomenon, a1−adrenoceptor−mediated influence of draining lymph node (dLN) cell−derived noradrenaline on CD4+ T−cell response in dLNs from Dark Agouti rats of both sexes immunized for EAE was examined. Methods: Cells recovered from dLNs on 7th day post−immunization were examined for noradrenaline synthesis/content and a1B−adrenoceptor expression using HPLC and/or flow cytometry. Additionally, effects of prazosin (a1- AR blocker) on CD4+ T−cell proliferation, the frequency of IL−17+ CD4+ T−cells and regulatory (Foxp3+CD25+) CD4+ T−cells (Tregs), activational/maturational molecule expression on antigen presenting cells (APCs) and their cytokine profile in dLN cell culture were examined using flow cytometry and/or qRT−PCR/ELISA. Results: Irrespective of sex, conventional CD4+ T−cells and Tregs, and APCs from rat dLNs synthesized noradrenaline, while only Tregs and APCs expressed a1B-adrenoceptor.
In myelin basic protein−stimulated dLN cell cultures from rats of both sexes prazosin increased Treg frequency and Foxp3 expression, but diminished co−stimulatory CD80 and CD86
molecule expression on APCs, thereby reducing CD4+ cell proliferation.",
journal = "Abstracts of the 5th European Congress of Immunology - ECI 2018 - Amsterdam, The Netherlands",
title = "Noradrenaline synthesized locally in draining lymph node cells modulates CD4+ T-cell development in rat EAE model: a role for a1-adrenoceptor",
pages = "P.A5.06.15",
url = "https://hdl.handle.net/21.15107/rcub_intor_853"
}
Pilipović, I., Vujnović, I., Petrović, R., Kosec, D., Stojić-Vukanić, Z.,& Leposavić, G.. (2018). Noradrenaline synthesized locally in draining lymph node cells modulates CD4+ T-cell development in rat EAE model: a role for a1-adrenoceptor. in Abstracts of the 5th European Congress of Immunology - ECI 2018 - Amsterdam, The Netherlands, P.A5.06.15.
https://hdl.handle.net/21.15107/rcub_intor_853
Pilipović I, Vujnović I, Petrović R, Kosec D, Stojić-Vukanić Z, Leposavić G. Noradrenaline synthesized locally in draining lymph node cells modulates CD4+ T-cell development in rat EAE model: a role for a1-adrenoceptor. in Abstracts of the 5th European Congress of Immunology - ECI 2018 - Amsterdam, The Netherlands. 2018;:P.A5.06.15.
https://hdl.handle.net/21.15107/rcub_intor_853 .
Pilipović, Ivan, Vujnović, I., Petrović, Raisa, Kosec, Duško, Stojić-Vukanić, Z., Leposavić, Gordana, "Noradrenaline synthesized locally in draining lymph node cells modulates CD4+ T-cell development in rat EAE model: a role for a1-adrenoceptor" in Abstracts of the 5th European Congress of Immunology - ECI 2018 - Amsterdam, The Netherlands (2018):P.A5.06.15,
https://hdl.handle.net/21.15107/rcub_intor_853 .

Aged rat macrophages exhibit ipaired response to in vitro stimulation with IL-4

Blagojević, Veljko; Ćuruvija, Ivana; Petrović, Raisa; Vujnović, I.; Dimitrijević, Mirjana; Vujić, V.; Stanojević, Stanislava; Leposavić, Gordana

(2015)

TY  - CONF
AU  - Blagojević, Veljko
AU  - Ćuruvija, Ivana
AU  - Petrović, Raisa
AU  - Vujnović, I.
AU  - Dimitrijević, Mirjana
AU  - Vujić, V.
AU  - Stanojević, Stanislava
AU  - Leposavić, Gordana
PY  - 2015
UR  - http://intor.torlakinstitut.com/handle/123456789/671
AB  - The influence of aging on phagocytic, antigen presenting and secretory capacity of resident Albino Oxford rat peritoneal macrophages cultured for 24 hours in medium alone and in the presence of either LPS or IL-4 was examined. The frequencies of CD68+, CD169+ and CCR7+ cells were comparable among fresh peritoneal cells from young (3-months-old) and aged (i8-months-old) rats, whereas those of CD163+, MHCII+ and CD86+ cells were lower within the same cell population in aged relative to young rats. Congruent with the latter findings, aged rat macrophages cultured in medium alone exhibited impaired allostimulatory properties. Additionally, their zymosan phagocytizing ability was reduced. Differently from young rat macrophages, aged rat macrophages changed neither allostimulatory nor zymosan phagocytizing ability upon in vitro treatment with either LPS or IL-4. In the presence of LPS, NO production comparably increased in macrophages from young and aged rats. However, in the presence of either LPS or IL-4 urea production increased only in macrophages from aged rats. Differently from LPS, which increased the prototypic proinflamrnatory cytokine production in macrophages from rats of both ages, the diminishing effect of IL-4 on their production was evident only in macrophages from young rats. Collectively, our results suggest that aging, besides diminishing influence on macrophage allostimulatory and zymosan phagocytizing ability, may impair their responsiveness to IL-4 in vitro. Consequently, an altered efficacy of inflammatory/immune responses in aged rats may be expected.
C3  - 4th European Congress of Immunology, Vienna 2015, September 6-9, abstract book
T1  - Aged rat macrophages exhibit ipaired response to in vitro stimulation with IL-4
EP  - 341
SP  - 341
SP  - P.C.12.06
UR  - https://hdl.handle.net/21.15107/rcub_intor_671
ER  - 
@conference{
author = "Blagojević, Veljko and Ćuruvija, Ivana and Petrović, Raisa and Vujnović, I. and Dimitrijević, Mirjana and Vujić, V. and Stanojević, Stanislava and Leposavić, Gordana",
year = "2015",
abstract = "The influence of aging on phagocytic, antigen presenting and secretory capacity of resident Albino Oxford rat peritoneal macrophages cultured for 24 hours in medium alone and in the presence of either LPS or IL-4 was examined. The frequencies of CD68+, CD169+ and CCR7+ cells were comparable among fresh peritoneal cells from young (3-months-old) and aged (i8-months-old) rats, whereas those of CD163+, MHCII+ and CD86+ cells were lower within the same cell population in aged relative to young rats. Congruent with the latter findings, aged rat macrophages cultured in medium alone exhibited impaired allostimulatory properties. Additionally, their zymosan phagocytizing ability was reduced. Differently from young rat macrophages, aged rat macrophages changed neither allostimulatory nor zymosan phagocytizing ability upon in vitro treatment with either LPS or IL-4. In the presence of LPS, NO production comparably increased in macrophages from young and aged rats. However, in the presence of either LPS or IL-4 urea production increased only in macrophages from aged rats. Differently from LPS, which increased the prototypic proinflamrnatory cytokine production in macrophages from rats of both ages, the diminishing effect of IL-4 on their production was evident only in macrophages from young rats. Collectively, our results suggest that aging, besides diminishing influence on macrophage allostimulatory and zymosan phagocytizing ability, may impair their responsiveness to IL-4 in vitro. Consequently, an altered efficacy of inflammatory/immune responses in aged rats may be expected.",
journal = "4th European Congress of Immunology, Vienna 2015, September 6-9, abstract book",
title = "Aged rat macrophages exhibit ipaired response to in vitro stimulation with IL-4",
pages = "341-341-P.C.12.06",
url = "https://hdl.handle.net/21.15107/rcub_intor_671"
}
Blagojević, V., Ćuruvija, I., Petrović, R., Vujnović, I., Dimitrijević, M., Vujić, V., Stanojević, S.,& Leposavić, G.. (2015). Aged rat macrophages exhibit ipaired response to in vitro stimulation with IL-4. in 4th European Congress of Immunology, Vienna 2015, September 6-9, abstract book, 341-341.
https://hdl.handle.net/21.15107/rcub_intor_671
Blagojević V, Ćuruvija I, Petrović R, Vujnović I, Dimitrijević M, Vujić V, Stanojević S, Leposavić G. Aged rat macrophages exhibit ipaired response to in vitro stimulation with IL-4. in 4th European Congress of Immunology, Vienna 2015, September 6-9, abstract book. 2015;:341-341.
https://hdl.handle.net/21.15107/rcub_intor_671 .
Blagojević, Veljko, Ćuruvija, Ivana, Petrović, Raisa, Vujnović, I., Dimitrijević, Mirjana, Vujić, V., Stanojević, Stanislava, Leposavić, Gordana, "Aged rat macrophages exhibit ipaired response to in vitro stimulation with IL-4" in 4th European Congress of Immunology, Vienna 2015, September 6-9, abstract book (2015):341-341,
https://hdl.handle.net/21.15107/rcub_intor_671 .