title: ADP and arachidonic acid induced platelet aggregation in schizophrenia and atypical psychoses.
abstract: Platelet aggregatory responses to adenosine diphosphate (ADP) and arachidonic acid were examined in 6 drug-free schizophrenics, 5 other drug-free psychotics, 8 'acute-on-chronic' schizophrenics (on long-term neuroleptic therapy) and 38 healthy controls. Platelet aggregation and disaggregation following ADP was significantly lower in 'acute-on-chronic' schizophrenics (on drugs) compared with healthy controls, and disaggregation following 1 microM ADP was significantly less in drug-free schizophrenics. The difference between maximum aggregation induced by ADP and that induced by arachidonic acid was significantly greater in schizophrenics (both on drugs and drug-free) than in controls. These findings are related to possible abnormalities of central nervous system function in schizophrenia.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology*; D014150:Antipsychotic Agents / Q000627:therapeutic use; D016718:Arachidonic Acid; D001095:Arachidonic Acids / Q000494:pharmacology*; D006801:Humans; D010974:Platelet Aggregation / Q000187:drug effects*; D011618:Psychotic Disorders / Q000097:blood*; D012559:Schizophrenia / Q000097:blood / Q000188:drug therapy
chemical_list: D014150:Antipsychotic Agents; D001095:Arachidonic Acids; D016718:Arachidonic Acid; D000244:Adenosine Diphosphate