PMID- 1315900 OWN - NLM STAT- MEDLINE DCOM- 19920609 LR - 20190701 IS - 0024-3205 (Print) IS - 0024-3205 (Linking) VI - 50 IP - 21 DP - 1992 TI - Antipyretic effect of central arginine8-vasopressin treatment: V1 receptors specifically involved? PG - 1625-30 AB - Intracerebroventricular (i.c.v.) administration of the neurohypophyseal neuropeptide arginine8-vasopressin (AVP) results in a dose-dependent attenuation of endotoxin-induced fever (EIF) in rats. Specific antagonists of the neuropeptided(CH2)5[Tyr(Me)2]AVP for V1 receptors, d(CH2)5[dlle2lle4]AVP for the V2 receptors and Des-Gly,NH2d(CH2)5[Tyr)Me2)Thr4Orn8]vasotocin, an antagonist of the oxytocin receptors (AOXT), failed to modify EIF when administered i.c.v. Relatively high doses (100 ng) of all three peptide antagonists effectively blocked the antipyretic effect of AVP. Administered in smaller doses (10 or 30 ng), however, a more specific interaction was observed, i.e. the V1 antagonist being the only effective compound in preventing the effect of AVP. Although the data indicate that peptide-antagonist interactions should be interpreted carefully, the present experiments confirm previous observations on the involvement of V1-type receptors in the antipyretic action of AVP and suggest additional interactions with V2 vasopressinergic and oxytocinergic receptors. FAU - Kovacs, G L AU - Kovacs GL AD - Rudolf Magnus Institute for Pharmacology, University of Utrecht, The Netherlands. FAU - Baars, A M AU - Baars AM FAU - De Wied, D AU - De Wied D LA - eng PT - Journal Article PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Endotoxins) RN - 0 (Receptors, Angiotensin) RN - 0 (Receptors, Oxytocin) RN - 0 (Receptors, Vasopressin) RN - 11000-17-2 (Vasopressins) RN - 113-79-1 (Arginine Vasopressin) RN - 50-56-6 (Oxytocin) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/*pharmacology MH - Arginine Vasopressin/*pharmacology MH - Endotoxins/*pharmacology MH - *Hyperthermia, Induced MH - Male MH - Oxytocin/metabolism MH - Rats MH - Rats, Inbred Strains MH - Receptors, Angiotensin/*drug effects MH - Receptors, Oxytocin MH - Receptors, Vasopressin MH - Vasopressins/metabolism EDAT- 1992/01/01 00:00 MHDA- 1992/01/01 00:01 CRDT- 1992/01/01 00:00 PHST- 1992/01/01 00:00 [pubmed] PHST- 1992/01/01 00:01 [medline] PHST- 1992/01/01 00:00 [entrez] AID - 0024-3205(92)90448-X [pii] AID - 10.1016/0024-3205(92)90448-x [doi] PST - ppublish SO - Life Sci. 1992;50(21):1625-30. doi: 10.1016/0024-3205(92)90448-x.