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Hereditary factors confer susceptibility to alcohol dependence. Alcohol mediates its reinforcing effects by enhancing dopamine activity in the mesolimbic dopamine system. The role of the dopamine transporter in terminating dopaminergic activity in synaptic neurotransmission suggests that variants of the dopamine transporter gene (DAT1) might contribute to individual differences in vulnerability...
The dopaminergic system has been implicated in alcoholism but studies at the dopamine D2 receptor gene (DRD2), one of the five dopamine receptors, have not given a consistent picture of an association with alcoholism. We have now studied the dopamine D4 receptor gene (DRD4) using six polymorphisms, both separately and as haplotypes. Three groups of alcoholics from Taiwan (Atayal, Ami, and Han) diagnosed...
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