Abstract:
:Midbrain dopaminergic (DA) neurons are governed by an endogenous cholinergic system, originated in the mesopontine nuclei. Nicotine hijacks nicotinic acetylcholine receptors (nAChRs) and interferes with physiological function of the cholinergic system. In this review, we describe the anatomical organization of the cholinergic system and the key nAChR subtypes mediating cholinergic regulation of DA transmission and nicotine reward and dependence, in an effort to identify potential targets for smoking intervention. Cholinergic modulation of midbrain DA systems relies on topographic organization of mesopontine cholinergic projections, and activation of nAChRs in midbrain DA neurons. Previous studies have revealed that α4, α6, and β2 subunit-containing nAChRs expressed in midbrain DA neurons and their terminals in the striatum regulate firings of midbrain DA neurons and activity-dependent dopamine release in the striatum. These nAChRs undergo modification upon chronic nicotine exposure. Clinical investigation has demonstrated that partial agonists of these receptors elevate the success rate of smoking cessation relative to placebo. However, further investigations are required to refine the drug targets to mitigate unpleasant side-effects.
journal_name
Acta Pharmacol Sinjournal_title
Acta pharmacologica Sinicaauthors
Xiao C,Zhou CY,Jiang JH,Yin Cdoi
10.1038/s41401-019-0299-4subject
Has Abstractpub_date
2020-01-01 00:00:00pages
1-9issue
1eissn
1671-4083issn
1745-7254pii
10.1038/s41401-019-0299-4journal_volume
41pub_type
杂志文章,评审abstract:AIM:To investigate the effects of diosgenin (Dio), a naturally occurring steroid saponin, on goiter formation in a mouse model of Graves' disease (GD) and the underlying mechanisms. METHODS:Female BALB/c mice were injected with adenovirus expressing the A subunit of thyrotropin receptor to induce GD. The mice were tre...
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Acta pharmacologica Sinica
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更新日期:2000-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Acta pharmacologica Sinica
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更新日期:2012-02-01 00:00:00
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更新日期:2020-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:2010-10-01 00:00:00