Literature DB >> 11447325

The MC4 receptor mediates alpha-MSH induced release of nucleus accumbens dopamine.

J Lindblom1, B Opmane, F Mutulis, I Mutule, R Petrovska, V Klusa, L Bergström, J E Wikberg.   

Abstract

Strong evidence suggests a functional link between the melanocortin and dopamine systems. alpha-Melanocyte stimulating hormone (alpha-MSH) induced grooming behaviour, which can be blocked by dopamine receptor antagonists, is associated with increased dopaminergic transmission in the striatal regions. Whether this effect is mediated specifically by melanocortin (MC) receptors has not previously been established. Using in vivo microdialysis on anesthesized rats we have shown that alpha- MSH administered into the ventral tegmental area induced a significant increase in dopamine and DOPAC levels in the nucleus accumbens. This increase was completely blocked by pre-treatment with the MC4 receptor selective antagonist HS131, indicating that the effects of alpha-MSH on dopamine transmission may be mediated by the MC4 receptor.

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Year:  2001        PMID： 11447325     DOI： 10.1097/00001756-200107200-00022

Source DB:  PubMed          Journal:  Neuroreport        ISSN： 0959-4965            Impact factor:   1.837


  32 in total

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