Age-related effects of diazepam on retention of inhibitory avoidance and shuttle avoidance tasks in rats
An. acad. bras. ciênc
;
69(1): 89-93, 1997. tab
Article
in English
| LILACS
| ID: lil-194167
ABSTRACT
We investigated the effect of diazepam on memory of 30 days-old and 60-70 days-old female Wistar rats, using two behavioral tasks step-down inhibitory avoidance (IA) and shuttle avoidance (SA). Diazepam (0.2,1.0 or 5.0 mg/kg) or its vehicle were given i.p., 60 min prior to the training session. Training-test interval was 24h. Diazepam impaired the retention of IA in 30 days-old rats at the three doses used, while retention of SA was not impaired by any dose. In the 60-70 days-old animals, diazepam at the dose of 0.2 mg/kg was facilitatory in IA and had no effect on SA, while doses of 1.0 mg/kg and 5.0 mg/kg impaired retention of both tasks. We suggest that these age-dependent effects of diazepam on memory of IA and SA could be related to developmental changes in brain GABA(A) receptors.
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Index:
LILACS (Americas)
Main subject:
Retention, Psychology
/
Avoidance Learning
/
Anti-Anxiety Agents
/
Diazepam
Limits:
Animals
Language:
English
Journal:
An. acad. bras. ciênc
Journal subject:
Science
Year:
1997
Type:
Article
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