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Besson, M, Granon, S, Mameli-Engvall, M, Cloëz-Tayarani, I, Maubourguet, N, Cormier, A, Cazala, P, David, V, Changeux, JP and Faure, P (2007) Long-term effects of chronic nicotine exposure on brain nicotinic receptors. Proc. Natl. Acad. Sci. U.S.A. 104:8155-60


Chronic nicotine exposure results in long-term homeostatic regulation of nicotinic acetylcholine receptors (nAChRs) that play a key role in the adaptative cellular processes leading to addiction. However, the relative contribution of the different nAChR subunits in this process is unclear. Using genetically modified mice and pharmacological manipulations, we provide behavioral, electrophysiological, and pharmacological evidence for a long-term mechanism by which chronic nicotine triggers opposing processes differentially mediated by beta2*- vs. alpha7*nAChRs. These data offer previously undescribed insights into the understanding of nicotine addiction and the treatment of several human pathologies by nicotine-like agents chronically acting on beta2*- or alpha7*nAChRs.


PubMed PMC1859991 Online version:10.1073/pnas.0702698104


Aconitine/analogs & derivatives; Aconitine/pharmacology; Animals; Brain/drug effects; Mice; Mice, Inbred C57BL; Nicotine/toxicity; Receptors, Nicotinic/drug effects; Receptors, Nicotinic/physiology; Ventral Tegmental Area/physiology



Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status

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