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Antianxiety and antidepressant-like effects of AC-5216, a novel mitochondrial benzodiazepine receptor ligand.

Abstract：

:We investigated the ability of N-benzyl-N-ethyl-2-(7,8-dihydro-7-methyl-8-oxo-2-phenyl-9H-purin-9-yl)acetamide (AC-5216), a novel mitochondrial benzodiazepine receptor (MBR) ligand, to produce anti-anxiety and antidepressant-like effects in various animal models. AC-5216 showed high affinity for MBRs prepared from rat whole brain (Ki 0.297 nm), rat glioma cells (IC50 3.04 nm) and human glioma cells (IC50 2.73 nm), but only negligible affinity for the other main receptors including central benzodiazepine receptors. AC-5216 produced anti-anxiety effects in the Vogel-type conflict test in rats, and in the light/dark box and social interaction tests in mice at 0.1-3, 0.003-0.01 and 0.01-0.3 mg kg(-1), p.o., respectively. These effects of AC-5216 were antagonized by PK11195, an MBR antagonist. In the forced swimming test in rats, AC-5216 (3-30 mg kg(-1), p.o.) reduced the immobility time, and this effect was blocked by PK11195. AC-5216 had no myorelaxant effects, did not affect the memory or prolong hexobarbitone-induced sleep in mice, even at doses as high as 1000 mg kg(-1), p.o. Although it did slightly prolong the ethanol-induced sleep time at 1000 mg kg(-1), AC-5216 (1-100 mg kg(-1), p.o.) produced no distinct change in the rat electroencephalogram. These results indicate that AC-5216 produces anti-anxiety and antidepressant-like effects that are mediated by MBR, but does not cause the side effects normally associated with conventional benzodiazepines. Hence, AC-5216 shows potential for the treatment of stress-related disorders including anxiety and depression.

journal_name

Br J Pharmacol

journal_title

British journal of pharmacology

authors

Kita A,Kohayakawa H,Kinoshita T,Ochi Y,Nakamichi K,Kurumiya S,Furukawa K,Oka M

doi

10.1038/sj.bjp.0705681

subject

Has Abstract

pub_date

2004-08-01 00:00:00

pages

1059-72

issue

7

eissn

0007-1188

issn

1476-5381

pii

sj.bjp.0705681

journal_volume

142

pub_type

杂志文章

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