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  • Title: Erythrocyte catechol-o-methyltransferase activity in primary affective disorder.
    Author: Dunner DL, Levitt M, Kumbaraci T, Fieve RR.
    Journal: Biol Psychiatry; 1977 Apr; 12(2):237-44. PubMed ID: 857937.
    Abstract:
    Previous studies have suggested that the activity of erythrocyte catechol-O-methyltransferase (COMT) may be reduced in women with bipolar and particularly unipolar affective illness. More recently, increased COMT activity in both men and women with affective disorder was reported. The activity of COMT in erythrocytes was determined in 184 outpatients with primary affective disorder at the Lithium Clinic of the New York State Psychiatric Institute. COMT activity was determined by a modification of the Axelrod and Cohn method with dopamine as substrate. This change resulted in an apparent threefold increase in the values for COMT activity; however, when both methods were compared, the results correlated (r = 0.97, p less than 0.001, N = 37). We found that the values for women were not significantly lower than those for men. In addition, there was no difference between patients with affective disorder and controls. Further, no difference was demonstrated between patients diagnosed as bipolar or uni-polar. Parameters such as mood, medication, and inpatient or outpatient status had no effect on COMT activity. The results of previous studies are discussed in an attempt to reconcile the different results.
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