BACKGROUND: Several theories of cigarette craving suggest that dopaminergic function in the ventral striatum plays an important role. The objective of this study was to determine correlations between craving-related brain activation and dopamine D1 receptor (D1R) binding in smokers. METHODS: Twelve smokers and 12 nonsmoking controls underwent [(15)O]H(2)O-positron emission tomography activation study and D1R-binding study using [(11)C]SCH 23390, and the correlations between receptor binding and cue-induced regional cerebral blood flow (rCBF) changes were assessed. Consecutive D1R-binding changes were examined during a period of 6 months of postsmoking abstinence in five smokers. RESULTS: Cue-induced activation was observed in the left ventral striatum including the nucleus accumbens in smokers. D1R binding in the ventral striatum showed a negative relationship with cue-induced craving and rCBF changes. D1R binding was significantly low in smokers, and there was a trend of increase after smoking abstinence. CONCLUSIONS: D1R binding and cue-induced rCBF changes in the ventral striatum suggest the important role of D1R in this region in cigarette craving.
BACKGROUND: Several theories of cigarette craving suggest that dopaminergic function in the ventral striatum plays an important role. The objective of this study was to determine correlations between craving-related brain activation and dopamine D1 receptor (D1R) binding in smokers. METHODS: Twelve smokers and 12 nonsmoking controls underwent [(15)O]H(2)O-positron emission tomography activation study and D1R-binding study using [(11)C]SCH 23390, and the correlations between receptor binding and cue-induced regional cerebral blood flow (rCBF) changes were assessed. Consecutive D1R-binding changes were examined during a period of 6 months of postsmoking abstinence in five smokers. RESULTS: Cue-induced activation was observed in the left ventral striatum including the nucleus accumbens in smokers. D1R binding in the ventral striatum showed a negative relationship with cue-induced craving and rCBF changes. D1R binding was significantly low in smokers, and there was a trend of increase after smoking abstinence. CONCLUSIONS: D1R binding and cue-induced rCBF changes in the ventral striatum suggest the important role of D1R in this region in cigarette craving.
Authors: Udi E Ghitza; Kenzie L Preston; David H Epstein; Hiroto Kuwabara; Christopher J Endres; Badreddine Bencherif; Susan J Boyd; Marc L Copersino; J James Frost; David A Gorelick Journal: Biol Psychiatry Date: 2010-07-01 Impact factor: 13.382
Authors: Edward F Domino; Lisong Ni; Joseph S Domino; Wendy Yang; Catherine Evans; Sally Guthrie; Heng Wang; Robert A Koeppe; Jon-Kar Zubieta Journal: Nicotine Tob Res Date: 2012-04-05 Impact factor: 4.244