The British Journal of Psychiatry 132: 133-138 (1978)
© 1978 The Royal College of Psychiatrists
Catechol-O-methyl transferase activity in patients with depressive illness and anxiety states
R Shulman, J Griffiths and P Diewold
Erythrocyte catechol-O-methyl transferase (COMT) activity was studied in 65
patients with depressive illness and anxiety states. A hypothesis that
measurement of this enzyme might have some value as an aid to diagnosis and
as an index of clinical recovery has not been confirmed. In patients with
endogenous depression, agitated subjects had COMT levels significantly
higher than normal (P less than .01) and retarded subjects had levels
significantly lower than normal (P less than .02). These observations are
congruent with some reports of high and low urinary MHPG excretion in
patients with depression. Further data correlating COMT assays with
catecholamine metabolites in depressed patients may reveal homogeneous
biochemical subgroups which could serve as a guide to rational therapy.