PMID: 22358085Feb 24, 2012Paper

Memory-related effects of cholinergic receptor ligands in mice as measured by the elevated plus maze test

Pharmacological Reports : PR
Marta KrukGrażyna Biała

Abstract

The purpose of our experiments was to examine the influence of cholinergic receptor ligands on memory-related behavior in mice using the elevated plus maze (EPM) test. The EPM test allows the exploration of different memory processes (acquisition and consolidation), depending on the time of drug treatment. The time necessary for mice to move from the opened arm to the enclosed arm (i.e., transfer latency, TL) was used as an index of memory. Our findings reveal that for both the processes of acquisition and consolidation, treatment with nicotine (0.035 or 0.175 mg/kg, free base, sc) shortened TL on the second day of the experiments (TL2), thus improving memory processes. Treatment with scopolamine (0.3 or 1.0 mg/kg, ip) significantly increased TL2 values, thus impairing cognitive processes. Moreover, we found that treatment with nicotine, at the non-effective doses used during testing, prevented scopolamine-induced memory impairment by inducing a decrease in TL2 values. Next, we evaluated the influence of bupropion (10 or 20 mg/kg, ip), a drug currently used for smoking cessation in humans, on memory-related behavior induced by treatment with nicotine and scopolamine. An acute injection of bupropion (10 or 20 mg/kg) prior to inj...Continue Reading

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Citations

Sep 24, 2013·Drug and Alcohol Dependence·Rick E Bernardi, Rainer Spanagel
Sep 28, 2018·Drug and Chemical Toxicology·Yasser A KhadrawyEman N Hosny

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