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