Journal
NEUROSCIENCE LETTERS
Volume 469, Issue 3, Pages 375-379Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2009.12.031
Keywords
MDMA; Synaptic plasticity; Visuo-spatial learning; Hippocampus
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Funding
- FONDECYT [1080652]
- DICYT [020993Z]
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3,4-Methylenedioxymethamphetamine (MDMA), an important recreational psychostimulant drug, was examined for its ability to alter visuo-spatial learning and synaptic plasticity. Young rats received MDMA (0.2 and 2 mg/kg s.c.) twice per day for 6 days while their visuo-spatial learning was tested using the Morris Water Maze. After this, animals were sacrificed and LTP induced in hippocampal slices. Visuospatial learning was impaired and LTP reduced, both dose-dependently, without changes in serotonin levels or paired-pulse facilitation. We conclude that low, nontoxic doses of MDMA, applied during several days, slow learning by impairing postsynaptic plasticity. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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