The cannabinoid CB1 receptor antagonist rimonabant dose-dependently inhibits memory recall in the passive avoidance task in domestic chicks (Gallus domesticus).

Abstract:

:The effect of endocannabinoids on synaptic plasticity has been demonstrated in a variety of species and brain regions. Relatively little is known about the localization and significance of cannabinoid (CB) receptors in the avian brain. The objective of the present study was to investigate the effect of a specific CB(1) receptor antagonist upon the acquisition and consolidation of memory in young domestic chicks. One-day-old domestic chicks (Gallus domesticus) were trained and tested by the passive avoidance paradigm. Systemic (i.p.) administration of the CB(1) receptor antagonist rimonabant in a dose of 1mg/kg 30 min before the training failed to affect learning, but a similar treatment 30 min before the recall (5.5h after training) attenuated the retention in 60% of animals. In another set of animals, a dose of 0.01 mg/kg produced no significant impairment, whereas doses 0.1mg/kg and 1.0mg/kg resulted in significant attenuation in passive avoidance performance when tested 30 min prior to recall. The results are discussed in terms of a putative mediating role of CB receptors in the consolidation of memory.

journal_name

Brain Res Bull

journal_title

Brain research bulletin

authors

Adám AS,Wenger T,Csillag A

doi

10.1016/j.brainresbull.2008.02.004

subject

Has Abstract

pub_date

2008-06-15 00:00:00

pages

272-4

issue

3

eissn

0361-9230

issn

1873-2747

pii

S0361-9230(08)00032-4

journal_volume

76

pub_type

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