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  • Title: Serotonin uptake by blood platelets of schizophrenic patients.
    Author: Arora RC, Meltzer HY.
    Journal: Psychiatry Res; 1982 Jun; 6(3):327-33. PubMed ID: 6955820.
    Abstract:
    Active uptake of serotonin (5-hydroxytryptamine, 5-HT) by blood platelets of acute and chronic schizophrenic patients was compared with that of normal controls. Unlike previous reports, no significant difference in the kinetic parameters (Km and Vmax) of 5-HT uptake between schizophrenic patients and normal controls was observed, although a trend toward decreased Vmax in the acute schizophrenics was present. Since decreased Vmax of platelet 5-HT uptake has been found in patients with bipolar, unipolar, and schizoaffective depression, further study of the usefulness of platelet 5-HT uptake as a biological marker for major depressive illness is indicated. Abnormalities of 5-HT uptake do not appear to contribute significantly to the increased platelet 5-HT levels which have been reported in schizophrenic patients.
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