title: The reliability of 5-hydroxytryptamine induced platelet aggregation responses in schizophrenic patients treated with neuroleptic drugs.
abstract: 1 The reliability of 5-hydroxytryptamine induced platelet aggregation responses in psychiatric patients treated with neuroleptic drugs was investigated by examining the effects of a number of technical factors which could account for the variability of responses observed in some patients. 2 Variation in incubation time, temperature, aggregometer stirrer speed, and in the time interval between withdrawal of the blood sample and testing, had no significant effects on the consistency of responses. 3 Dilution of platelet rich plasma (PRP) led to enhanced platelet aggregation responses becoming non-enhanced. 4 Overcentrifugation of blood samples during the preparation of PRP caused a decrease in the incidence of enhanced platelet aggregation responses observed in chronic schizophrenic patients receiving chlorpromazine. 5 The reliability of platelet aggregation responses as indices of the action of neuroleptic drugs in psychiatric patients remains doubtful.
mesh_terms: D014150:Antipsychotic Agents / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D010974:Platelet Aggregation / Q000187:drug effects*; D012559:Schizophrenia / Q000097:blood* / Q000188:drug therapy; D012701:Serotonin / Q000494:pharmacology*
chemical_list: D014150:Antipsychotic Agents; D012701:Serotonin