Sci. Signal., 30 June 2009
Neuroscience BDNF and Drug Dependence
Science, AAAS, Cambridge CB2 1LQ, UK
Brain-derived neurotrophic factor (BDNF) is a growth factor involved in neuronal plasticity that is expressed after chronic administration of drugs of abuse and may play a crucial role in chronic opiate effects. Vargas-Perez et al. found that BDNF was directly involved in the switching mechanism in the ventral tegmental area, from an opiate-naïve, dopamine-independent drug reward substrate to an opiate-dependent, dopamine-dependent motivational substrate. In the ventral tegmental area, BDNF changed the action of -aminobutyric acid type A (GABAA) receptors from inhibitory to excitatory. This change led to behavioral changes that defined a neurobiological boundary between the acute phase of drug-taking and addiction.
H. Vargas-Perez, R. Ting-A-Kee, C. H. Walton, D. M. Hansen, R. Razavi, L. Clarke, M. R. Bufalino, D. W. Allison, S. C. Steffensen, D. van der Kooy, Ventral tegmental area BDNF induces an opiate-dependent–like reward state in naïve rats. Science 324, 1732–1734 (2009). [Abstract] [Full Text]
Citation: P. Stern, BDNF and Drug Dependence. Sci. Signal. 2, ec221 (2009).
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