PMID- 7505413 OWN - NLM STAT- MEDLINE DCOM- 19940125 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 159 IP - 1-2 DP - 1993 Sep 3 TI - Central administration of senktide, a tachykinin NK-3 agonist, has an antidiuretic action by stimulating AVP release in water-loaded rats. PG - 187-90 AB - Intracerebroventricular (i.c.v.) injections of senktide (0.01-10 nmol), a tachykinin NK-3 agonist, had an antidiuretic action in water-loaded rats (4.5% body wt.). Pretreatment with OPC-31260 (1 mg/kg, i.v.), a non-peptide vasopressin V2 antagonist, inhibited the antidiuretic action induced by exogenous arginine vasopressin (AVP, 0.1 micrograms/kg, i.v.) and senktide (0.1 nmol, i.c.v.). In addition, senktide (11.8 nmol, i.c.v.) caused a marked increase of the plasma AVP level in conscious rats. These results suggest that the central NKB analogue senktide has an antidiuretic effect by stimulating AVP secretion from the pituitary gland through the NK-3 receptor in the hypothalamus. FAU - Saigo, A AU - Saigo A AD - Department of Pharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Japan. FAU - Takano, Y AU - Takano Y FAU - Matsumoto, T AU - Matsumoto T FAU - Tran, M AU - Tran M FAU - Nakayama, Y AU - Nakayama Y FAU - Saito, R AU - Saito R FAU - Yamada, K AU - Yamada K FAU - Kamiya, H AU - Kamiya H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Benzazepines) RN - 0 (Peptide Fragments) RN - 0 (Receptors, Neurokinin-3) RN - 059QF0KO0R (Water) RN - 106128-89-6 (senktide) RN - 113-79-1 (Arginine Vasopressin) RN - 17OJ42922Y (mozavaptan) RN - 33507-63-0 (Substance P) SB - IM MH - Animals MH - Arginine Vasopressin/antagonists & inhibitors/blood/*metabolism MH - Benzazepines/pharmacology MH - Diuresis/*drug effects MH - Injections, Intraventricular MH - Male MH - Peptide Fragments/administration & dosage/antagonists & inhibitors/*pharmacology MH - Rats MH - Rats, Wistar MH - Receptors, Neurokinin-3/*physiology MH - Substance P/administration & dosage/*analogs & derivatives/antagonists & inhibitors/pharmacology MH - Urodynamics/drug effects MH - Water/pharmacology EDAT- 1993/09/03 00:00 MHDA- 1993/09/03 00:01 CRDT- 1993/09/03 00:00 PHST- 1993/09/03 00:00 [pubmed] PHST- 1993/09/03 00:01 [medline] PHST- 1993/09/03 00:00 [entrez] AID - 0304-3940(93)90830-E [pii] AID - 10.1016/0304-3940(93)90830-e [doi] PST - ppublish SO - Neurosci Lett. 1993 Sep 3;159(1-2):187-90. doi: 10.1016/0304-3940(93)90830-e.