Journal
PHARMACOLOGY BIOCHEMISTRY AND BEHAVIOR
Volume 72, Issue 1-2, Pages 389-395Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0091-3057(01)00762-6
Keywords
cyanamide-ethanol reaction (CER); catalase; aldehyde dehydrogenase; cyanamide; 4-methylpyrazole; ethanol; acetaldehyde; mice
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To access the role of cyanamide and 4-methylpyrazole (4-MP) in mediating ethanol-induced locomotor activity in mice, they were pretreated with cyanamide (12.5, 25, or 50 g/kg) prior to one ethanol injection (2.4 g/kg) and showed significantly depressed locomotor activity compared with control groups. Cyanamide (25 mg/kg) also cancelled out the biphasic action of ethanol (0, 0.8, 1.6, 2.4, 3.2, or 4 g/kg) on locomotor activity. The action of cyanamide and 4-MP in combined administration was also tested. Our data show that pretreated with cyanamide and 4-MP, the depressive effect of cyanamide on the locomotor activity induced by ethanol disappeared, and the locomotor activity rose to levels similar to those of the control group, recovering the biphasic ethanol effect. These effects cannot be attributed to peripheral elevated blood acetaldehyde levels, as pretreatment with 4-MP prevents accumulation of acetaldehyde. These data might suggest some influence of brain catalase and aldehyde dehyrogenase (ALDH) on the effects of ethanol. (C) 2002 Elsevier Science Inc. All rights reserved.
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