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Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Psychoneuroendocrinology 2014 ; 50 (ä): 14-9 Nephropedia Template TP
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OXYTOCIN INDUCES SOCIAL COMMUNICATION BY ACTIVATING ARGININEVASOPRESSIN V1A RECEPTORS AND NOT OXYTOCIN RECEPTORS #MMPMID25173438
SONG Z; MCCANN KE; MCNEILL JK; LARKIN TE; HUHMAN KL; ALBERS HE
Psychoneuroendocrinology 2014[Dec]; 50 (ä): 14-9 PMID25173438show ga
Arginine-vasopressin (AVP) and oxytocin (OT) and their receptors are very similar in structure. As a result, at least some of the effects of these peptides may be the result of crosstalk between their canonical receptors. The present study investigated this hypothesis by determining whether the induction of flank marking, a form of social communication in Syrian hamsters, by OT is mediated by the OT receptor or the AVP V1a receptor. Intracerebroventricular (ICV) injections of OT or AVP induced flank marking in a dose-dependent manner although the effects of AVP were approximately 100 times greater than those of OT. Injections of highly selective V1a receptor agonists but not OT receptor agonists induced flank marking, and V1a receptor antagonists but not OT receptor antagonists significantly inhibited the ability of OT to induce flank marking. Lastly, injection of alpha-melanocyte-stimulating hormone (?-MSH), a peptide that stimulates OT but not AVP release, significantly increased odor-induced flank marking, and these effects were blocked by a V1a receptor antagonist. These data demonstrate that OT induces flank marking by activating AVP V1a and not OT receptors, suggesting that the V1a receptor should be considered to be an OT receptor as well as an AVP receptor.