Disruption of a drug-induced choice behavior by UV light - PubMed (original) (raw)
Comparative Study
Disruption of a drug-induced choice behavior by UV light
R B Raffa et al. Behav Pharmacol. 2003 Nov.
Abstract
A considerable body of evidence suggests that UV light disrupts ligand binding in vitro. In vivo, UV light effects have been reported to disrupt simple behaviors such as spontaneous locomotor activity. However, there are no reports of UV light blocking a more complex drug-altered behavior. We now report that: (1) cocaine dose-relatedly reversed planarians' usual selection of dark over light (from 19.4+/-4.4% to 73.3+/-6.7%) (this effect was not due to an increase in locomotor activity, since cocaine only minimally increases locomotor activity at the highest dose tested); and (2) the cocaine-induced alteration of behavioral choice was attenuated significantly (P<0.05) by UV light (366 nm and 254 nm). The results demonstrate alteration of a relatively complex choice behavior by UV light.
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