Abstract
Phospholipase-A2 (PLA2) is a key enzyme in the metabolism of phospholipids, and it may play an important role in neuronal function and neuronal plasticity. We determined the activity of PLA2 in the plasma of 20 drug-free schizophrenic patients, 6 nonschizophrenic psychiatric patients, and 21 healthy controls. Schizophrenic patients showed significantly higher plasma PLA2 activity than controls, and higher than our nonschizophrenic patients. Seventy percent of the schizophrenics had enzyme activity higher than the highest value from the control group. The increased plasma PLA2 activity in schizophrenics was reduced to the level of the controls after 3 weeks of neuroleptic treatment. These findings warrant further study for possible implications of this increased PLA2 activity in the etiopathology of schizophrenia.
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