Platelet monoamine oxidase (MAO) activity was examined in 77 @entity308 @entity1 (40 males and 37 females) and 28 controls (14 males and 14 females). @entity1 were compared across increasingly specific diagnostic groupings in a four-step data analytic procedure. In step 1, MAO activity in the total sample of @entity308 @entity1 was compared with that of control subjects. In step 2, @entity308 @entity1 were compared with Bipolar (Bipolar I and Bipolar II) @entity308 @entity1 . In step 3, @entity308 @entity1 with and without schizotypal features were compared. In step 4, both the nonschizotypal Unipolar @entity1 and compared. In step 4, both the nonschizotypal Unipolar @entity1 and nonschizotypal Bipolar @entity1 were separated into those who met RDC criteria for a @entity308 and those who did not; and platelet MAO activity was compared in the resulting four groups. Results indicated significantly higher platelet MAO activity in nonschizotypal Unipolar Endogenous @entity308 @entity1 than in nonschizotypal @entity162 @entity1 or nonschizotypal Unipolar Other @entity1 . In addition, the presence of a definite @entity308 was associated with greater overall symptom severity in both @entity162 @entity1 . Findings are discussed with respect to the conflicting results reported in previous studies of MAO activity in @entity1 with @entity308 .

Toward a biochemical classification of XXXX --VIII. Platelet monoamine oxidase activity in subtypes of @entity308 .

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity162 :: ('MESH:D001714', 'Disease') :: ['Bipolar Endogenous depressed', 'Unipolar and Bipolar depressed'] @entity308 :: ('MESH:D003866', 'Disease') :: ['Unipolar depressed', 'depressive disorders', 'Endogenous depressive syndrome', 'depressed', 'definite Endogenous depression']
@entity308 :: (MESH:D003866,Disease) :: ['depressive disorders']
