ArticleBehavioural brain research2025
L-type calcium channel blockade attenuates cue-induced cocaine-seeking in female rats.
Article in Behavioural brain research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Periods of cocaine abstinence are associated with a high risk of relapse, often triggered by exposure to drug-associated cues. Previous research has implicated L-type calcium channels (LTCCs) in drug-seeking behaviors, yet their role in cue-induced relapse, particularly in females, remains underexplored. This study investigated the effects of LTCC inhibition on cue-induced cocaine-seeking behavior during abstinence in female Sprague-Dawley rats. Following a 10-day cocaine self-administration and a 14-day forced abstinence period, the rats were tested for cue-induced cocaine-seeking after receiving systemic administration of isradipine, a non-selective LTCC inhibitor (0.0 mg/kg, 0.1 mg/kg, 0.4 mg/kg, or 1.2 mg/kg, i.p.). Isradipine significantly reduced cue-induced cocaine-seeking in a dose-dependent manner without affecting cocaine-taking or natural reward-taking or seeking behaviors. Notably, these findings in females were comparable to our prior results observed in males, demonstrating that LTCC inhibition selectively attenuates the impact of cocaine-associated cues across sexes. These results highlight the translational potential of LTCCs as a therapeutic agent to reduce relapse risk in cocaine-dependent individuals. This study underscores the importance of considering sex-specific mechanisms in addiction treatment and calls for further research into LTCCs as a target for relapse prevention.
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