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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lin, Ying Dong, Yan Han, Ming-hu Zukin, R. Suzanne Malenka, Robert C. Brown, Travis E. Sorg, Barbara A. Saal, Daniel B. Neve, Rachael L. Huang, Yanhua H. Nestler, Eric J. |
| Description | Author Affiliation: Huang YH ( Program in Neuroscience, Department of Veterinary and Comparative Anatomy, Pharmacology, and Physiology, Washington State University, Wegner 205, Pullman, WA 99164, USA.) |
| Abstract | Nucleus accumbens (NAc) medium spiny neurons cycle between two states, a functionally inactive downstate and a functionally active upstate. Here, we show that activation of the transcription factor cAMP-response element-binding protein (CREB), a common molecular response to several drugs of abuse, increases both duration of the upstate and action potential firing during the upstate. This effect of CREB is mediated by enhanced N-methyl-d-aspartate glutamate receptor (NMDAR) function: increased CREB activity increases both NMDAR-mediated synaptic currents and surface level of NMDARs, while inhibition of NMDARs abolishes the effect of CREB on upstate duration. Furthermore, mimicking the effect of CREB by pharmacological enhancement of NMDAR function in the NAc in vivo suppressed novelty- and cocaine-elicited locomotor activity. These findings suggest that by enhancing NMDAR-mediated synaptic transmission, CREB activation promotes the proportion of time NAc neurons spend in the upstate. This effect, along with the CREB enhancement of NAc membrane excitability (Dong, Y., Green, T., Saal, D., Marie, H., Neve, R., Nestler, E. J., and Malenka, R. C. (2006) Nat. Neurosci. 9, 475-477), may counteract drug-induced maladaptations in the NAc and thus ameliorate the addictive state. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 5 |
| Volume Number | 283 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2008-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cyclic AMP Response Element-Binding Protein Metabolism Nucleus Accumbens Receptors, N-Methyl-D-Aspartate Animals Behavior, Animal Physiology Genetics Electrophysiology Excitatory Postsynaptic Potentials Mutagenesis, Site-Directed Neurons Cytology Rats, Sprague-Dawley Recombinant Proteins Tissue Culture Techniques Transfection Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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