| Literature DB >> 17997038 |
Ullrich Wüllner1, Daniela Gündisch, Hans Herzog, Martina Minnerop, Alexis Joe, Marc Warnecke, Frank Jessen, Christian Schütz, Michael Reinhardt, Wolfgang Eschner, Thomas Klockgether, Joern Schmaljohann.
Abstract
The role of the alpha4beta2* nicotinic acetylcholine receptors (nAChR) in tobacco addiction in humans is largely unresolved. We visualized brain alpha4beta2* nicotinic acetylcholine receptors of smokers and non-smokers with positron emission tomography using 2-[(18)F]fluoro-3-(2(S)azetidinylmethoxy)pyridine, commonly known as 2-[(18)F]F-A-85380. The total brain distribution volume of 2-[(18)F]F-A-85380 was significantly increased in smokers. Statistical parametric mapping revealed that the most prominent regional differences of distribution volumes (DV) were found in cerebellum and brainstem with an increased uptake in smokers. The up-regulation of alpha4beta2* nAChR upon chronic nicotine exposure via tobacco smoking incorporates subcortical brain regions which may play an important role in nicotine addiction.Entities:
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Year: 2007 PMID: 17997038 DOI: 10.1016/j.neulet.2007.10.011
Source DB: PubMed Journal: Neurosci Lett ISSN: 0304-3940 Impact factor: 3.046