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2-phenylethynyl-butyltellurium improves memory in mice. | LitMetric

2-phenylethynyl-butyltellurium improves memory in mice.

Neurochem Int

Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil.

Published: March 2012

AI Article Synopsis

Article Abstract

The present study was conducted to evaluate the effect of 2-phenylethynyl-butyltellurium (PEBT), an organotellurium compound, at doses of 5 and 10 mg/kg on memory, employing the step-down inhibitory avoidance task in mice. Moreover, the involvement of glutamate uptake and release in cerebral cortex and hippocampus of mice was investigated. A single oral administration (p.o.) of PEBT at the dose of 10 mg/kg 1h before training (acquisition), immediately after training (consolidation) or 1 h before the test session (retrieval) of the step-down inhibitory avoidance task increased the step-through latency time in comparison to the control mice. In the open-field test, no significant differences in the number of crossings and rearings were observed among groups. The [(3)H]glutamate uptake by cerebral cortex and hippocampal slices of mice was significantly inhibited after 1h of treatment with PEBT. After 24h of PEBT exposure, only the hippocampal [(3)H]glutamate uptake was inhibited. The [(3)H]glutamate release by cerebral cortex and hippocampal synaptosomes of mice was not altered. These results suggest that PEBT improved memory stages (acquisition, consolidation and retrieval) in the step-down inhibitory avoidance task in mice. The improvement of memory by PEBT seems most likely to be mediated through an interaction with the amino acid transporters of the glutamatergic system.

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Source
http://dx.doi.org/10.1016/j.neuint.2012.01.011DOI Listing

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