Influence of the catechol-O-methyltransferase Val108/158Met polymorphism on the plasma concentration of catecholamine metabolites and on clinical features in type I bipolar disorder--a preliminary report.

Abstract excerpt

BACKGROUND: The activity of catechol-O-methyltransferase (COMT) may be related to psychosis susceptibility. The Val108/158Met polymorphism of the COMT gene influences its enzymatic activity and may result in altered concentrations of monoamine metabolites and different clinical responses of patients to pharmacological treatments. METHODS: We examined in a sample of 42 bipolar patients if the Val108/158Met...

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