Anxiogenesis induced by nitric oxide synthase inhibition and anxiolytic effect of melanin-concentrating hormone (MCH) in rat brain.

被引:71
作者
Monzón, ME [1 ]
Varas, MM [1 ]
De Barioglio, SR [1 ]
机构
[1] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Farmacol, Lab Fisiol, RA-5000 Cordoba, Argentina
关键词
D O I
10.1016/S0196-9781(01)00439-9
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
In this study, the involvement of nitric oxide (NO) in the mechanism of anxiety was investigated. The rats: received an intraamygdaline or intrahippocampal injection of the nitric oxide synthase inhibitor, N-G-nitro-1-arginine (L-NOARG), and were then tested in the plus-maze test. L-NOARG induced a decrease in the time spent by rats in the open arms. Conversely, the administration of the melanin-concentrating hormone (MCH) into these structures increased the number of entries into the open arms as well as the time spent on them. MCH injected in rats pretreated with L-NOARG also was able to revert the anxiogenic effects of L-NOARG in amygdala. (C) 2001 Elsevier Science Inc. All rights reserved.
引用
收藏
页码:1043 / 1047
页数:5
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