Release of the neurotransmitter dopamine in the mesolimbic system of the brain mediates the reinforcing properties of several drugs of abuse, including nicotine. Here we investigate the contribution of the high-affinity neuronal nicotinic acetylcholine receptor to the effects of nicotine on the mesolimbic dopamine system in mice lacking the beta2 subunit of this receptor. We found that nicotine stimulates dopamine release in the ventral striatum of wild-type mice but not in the ventral striatum of beta2-mutant mice. Using patch-clamp recording, we show that mesencephalic dopaminergic neurons from mice without the beta2 subunit no longer respond to nicotine, and that self-administration of nicotine is attenuated in these mutant mice. Our results strongly support the idea that the beta2-containing neuronal nicotinic acetylcholine receptor is involved in mediating the reinforcing properties of nicotine.

Acetylcholine receptors containing b2 subunits are involved in the reinforcing properties of nicotine / Picciotto, M. R.; Zoli, Michele; Rimondini, R.; Lena, C.; Marubio, L.; MERLO PICH, E.; Fuxe, K.; Changeux, J. P.. - In: NATURE. - ISSN 0028-0836. - STAMPA. - 391:(1998), pp. 173-177.

Acetylcholine receptors containing b2 subunits are involved in the reinforcing properties of nicotine.

ZOLI, Michele;
1998

Abstract

Release of the neurotransmitter dopamine in the mesolimbic system of the brain mediates the reinforcing properties of several drugs of abuse, including nicotine. Here we investigate the contribution of the high-affinity neuronal nicotinic acetylcholine receptor to the effects of nicotine on the mesolimbic dopamine system in mice lacking the beta2 subunit of this receptor. We found that nicotine stimulates dopamine release in the ventral striatum of wild-type mice but not in the ventral striatum of beta2-mutant mice. Using patch-clamp recording, we show that mesencephalic dopaminergic neurons from mice without the beta2 subunit no longer respond to nicotine, and that self-administration of nicotine is attenuated in these mutant mice. Our results strongly support the idea that the beta2-containing neuronal nicotinic acetylcholine receptor is involved in mediating the reinforcing properties of nicotine.
1998
391
173
177
Acetylcholine receptors containing b2 subunits are involved in the reinforcing properties of nicotine / Picciotto, M. R.; Zoli, Michele; Rimondini, R.; Lena, C.; Marubio, L.; MERLO PICH, E.; Fuxe, K.; Changeux, J. P.. - In: NATURE. - ISSN 0028-0836. - STAMPA. - 391:(1998), pp. 173-177.
Picciotto, M. R.; Zoli, Michele; Rimondini, R.; Lena, C.; Marubio, L.; MERLO PICH, E.; Fuxe, K.; Changeux, J. P.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/460651
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