EFFECTS OF ANGIOTENSIN-II AND AN ANGIOTENSIN CONVERTING-ENZYME-INHIBITOR ON ALCOHOL INTAKE IN P AND NP RATS

被引:15
作者
GRUPP, LA [1 ]
机构
[1] ADDICT RES FDN,DEPT PRIMARY MECH,TORONTO M5S 2S1,ONTARIO,CANADA
关键词
ALCOHOL INTAKE; P AND NP RATS; RENIN-ANGIOTENSIN SYSTEM; ANGIOTENSIN-II; ANGIOTENSIN CONVERTING ENZYME INHIBITOR; SQ 29,852;
D O I
10.1016/0091-3057(92)90067-P
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
While it is known that randomly bred normotensive Wistar stock and hypertensive rats alter their alcohol consumption when activity in the renin-angiotensin (R-A) system is modified, the effect of manipulations to the R-A system on alcohol intake in genetically selected alcohol-preferring P and -nonpreferring NP rats has not been assessed. In Experiment 1, nine P rats and 8 NP rats were injected with the saline vehicle and offered limited access to 10% (v/v) alcohol for 40 min each day for 7 days. When intake stabilized both groups were given daily intraperitoneal injections of the angiotensin converting enzyme inhibitor, ceranapril (20 mg/kg) 45 min prior to alcohol access for 11 days. Ceranapril (SQ 29,852) reduced alcohol intake in both the P and NP animals, while saline had no effect. In Experiment 2, these same two groups of P and NP rats were injected with three doses of angiotensin II (ANG II) (100, 200, 400-mu-g/kg) immediately prior to alcohol access. Each dose was tested for 10 consecutive days, with a 14-day period of no drug preceding and following the ANG II treatments. ANG II reduced alcohol intake in the NP rats and produced a dose-dependent reduction in the alcohol consumption of the P rats. These findings indicate that the renin-angiotensin system can modify alcohol consumption in rats selectively bred for high and low alcohol intake.
引用
收藏
页码:105 / 108
页数:4
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