کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4312596 | 1612980 | 2013 | 4 صفحه PDF | دانلود رایگان |
• Urocortin 3 elicits anxiolytic action in the plus maze in mice.
• The action is mediated by dopaminergic, cholinergic, beta-adrenergic and serotonergic receptors.
• Alfa-adrenergic and GABA-A-ergic mediation is not involved.
Urocortin 3 (Ucn 3) was tested for anxiolytic action in mice an elevated plus maze. For detection of the possible involvement of neurotransmitters, the mice were pretreated with receptor blockers: haloperidol, phenoxybenzamine, propranolol, atropine, methysergide, bicuculline or naloxone. The peptide was administered into the lateral brain ventricle; the receptor blockers were applied intra- peritoneally.Ucn 3 alone elicited dose-dependent bell-shaped anxiolytic action. The most effective dose was 0.5 μg. In the combined testing a 0.5 μg dose was used. Haloperidol, propranolol, atropine, methysergide, and naloxone, blocked the Ucn 3-induced anxiolytic action, while phenoxybenzamine and bicuculline were ineffective. The results suggest that dopaminergic, beta-adrenergic, cholinergic, serotonergic and opiate transmissions are involved in the anxiolytic action of Ucn 3.
Journal: Behavioural Brain Research - Volume 252, 1 September 2013, Pages 88–91