Effect of ghrelin administration on phagocytic activity in acute cold-restraint stress exposed rats
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Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Ghrelin, an endogenous ligand for growth hormone secretagogue receptor, was identified in the rat stomach. This peptide acts through nitric oxide (NO) by expressing endothelial nitric oxide synthase (eNOS) and down regulating inducible nitric oxide synthase (NOS) at its gastroproprotective effect against restraint stress induced damage. Recently the glirelin receptor has also been detected in peripheral systems including immune tissue. We have investigated the possible effect of glirelin on phagocytic activity of peritoneal macrophages in acute coldrestraint stress (ACRS) exposed rats. The rats were divided into control, stress and ghrelin groups. In ghrelin groups, single dose and three days consecutive dose of ghrelin (20 mu g/kg. i.p.) were applied to rats that were exposed to ACRS for 4 h. I rut of saline was injected i.p. after ACRS for 3 consecutive days to the rats of the stress groups. Ghrelin administration reduced the increased phagocytic activity induced by ACRS. We conclude that ghrelin exerts an important role at macrophage phagocytic activity in ACRS exposed rats. (c) 2006 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Ghrelin, Inducible Nitric Oxide Synthase, Acute Cold-Restraint Stress, Phagocytic Activity
Kaynak
Regulatory Peptides
WoS Q Değeri
Q2
Scopus Q Değeri
N/A
Cilt
138
Sayı
2-3
