72 In intracranial SA experiments where learning is required, α6-KO mice showed a trend (although it was not significant) toward reduced nicotine SA compared with wild-type (WT) control mice. 76 These findings demonstrate that the α6 subunit in the VTA is necessary for maintaining nicotine SA.
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Crucial roles of the CHRNB3-CHRNA6 gene cluster on chromosome 8 in nicotine dependence: update and subjects for future research.
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Functional studies of the β3 and α6 subunits by genetic manipulation in rodents As described above, numerous genetic studies have revealed a highly significant association between variants in the CHRNB3–CHRNA6 gene cluster and increased vulnerability to ND, 21 , 27 , 28 which generates a need to explore the underlying mechanisms.