PMID- 1802340 OWN - NLM STAT- MEDLINE DCOM- 19920424 LR - 20190613 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 561 IP - 2 DP - 1991 Oct 11 TI - Non-peptide angiotensin II receptor antagonist and angiotensin-converting enzyme inhibitor: effect on a renin-induced deficit of a passive avoidance response in rats. PG - 230-5 AB - Non-peptide receptor ligands with differential affinity for the angiotensin II-1 (AII-1) receptor (EXP3312, EXP3880) or the AII-2 receptor (PD123177) and an angiotensin converting enzyme (ACE) inhibitor captopril were evaluated for the ability to protect against a renin-induced performance deficit in a passive avoidance (PA) task in rats. The ability to retain a PA response was shown to decrease as the dose of intracerebroventricularly (i.c.v.) administered renin increased with maximal retention deficits occurring at 1.0 micrograms/5 microliters i.c.v. EXP3312 (1-100 micrograms/5 microliters i.c.v.) and EXP3880 (1-100 micrograms/5 microliters i.c.v.) produced dose-dependent increases in retention latencies when co-administered with renin. The peak effect dose (PED) for EXP3312 and EXP3880 was 3 and 30 micrograms i.c.v., respectively. In contrast, PD123177 was not effective in preventing the renin-induced decrease in retention across a broad range of doses (0.1-100 micrograms/5 microliters i.c.v.). Captopril (1-100 micrograms/5 microliters i.c.v.) also prevented the renin-induced performance deficit with a PED of 30 micrograms/5 microliters i.c.v. These results suggest that renin given i.c.v. produces a deficit in performance of a PA response in rats and that this effect can be attenuated by an ACE inhibitor, AII-1 receptor ligands, but not AII-2 receptor blocker. FAU - DeNoble, V J AU - DeNoble VJ AD - Du Pont Merck Pharmaceutical Company, Wilmington, DE 19880-0400. FAU - DeNoble, K F AU - DeNoble KF FAU - Spencer, K R AU - Spencer KR FAU - Chiu, A T AU - Chiu AT FAU - Wong, P C AU - Wong PC FAU - Timmermans, P B AU - Timmermans PB LA - eng PT - Journal Article PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Angiotensin Receptor Antagonists) RN - 0 (Biphenyl Compounds) RN - 0 (Imidazoles) RN - 0 (Pyridines) RN - 0 (Receptors, Angiotensin) RN - 0 (Tetrazoles) RN - 11128-99-7 (Angiotensin II) RN - 114785-12-5 (PD 123177) RN - 114798-35-5 (EXP3312) RN - 138330-11-7 (EXP3880) RN - 9G64RSX1XD (Captopril) RN - EC 3.4.23.15 (Renin) SB - IM MH - Angiotensin II/*metabolism MH - *Angiotensin Receptor Antagonists MH - Animals MH - Avoidance Learning/*drug effects MH - Biphenyl Compounds/administration & dosage/*pharmacology MH - Captopril/administration & dosage/*pharmacology MH - Cerebral Ventricles/drug effects/*physiology MH - Imidazoles/administration & dosage/*pharmacology MH - Injections, Intraventricular MH - Male MH - Pyridines/administration & dosage/*pharmacology MH - Rats MH - Rats, Inbred Strains MH - Receptors, Angiotensin/physiology MH - Reference Values MH - Renin/administration & dosage/*pharmacology MH - Tetrazoles/administration & dosage/*pharmacology MH - Time Factors EDAT- 1991/10/11 00:00 MHDA- 1991/10/11 00:01 CRDT- 1991/10/11 00:00 PHST- 1991/10/11 00:00 [pubmed] PHST- 1991/10/11 00:01 [medline] PHST- 1991/10/11 00:00 [entrez] AID - 0006-8993(91)91599-V [pii] AID - 10.1016/0006-8993(91)91599-v [doi] PST - ppublish SO - Brain Res. 1991 Oct 11;561(2):230-5. doi: 10.1016/0006-8993(91)91599-v.