First-episode neuroleptic-free schizophrenics: Concentrations of monoamines and their metabolites in plasma and their correlations with clinical responses to haloperidol treatment

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書誌事項

公開日
1997-04
権利情報
  • https://www.elsevier.com/tdm/userlicense/1.0/
DOI
  • 10.1016/s0006-3223(96)00244-2
公開者
Elsevier BV

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説明

Thirty-two first-episode neuroleptic-free schizophrenics were treated with neuroleptics for 8 weeks. The monoamines and their metabolites, dopamine, norepinephrine, serotonin, homovanillic acid (HVA), 3-methoxy-4-hydroxy-phenylglycol(MHPG), and 5-hydroxyindoleacetic acid (5-HIAA) in plasma were measured to examine the association with treatment responses and psychopathology assessed according to the brief psychiatry rating scale (BPRS). No differences were noted in the pretreatment concentrations of monoamines and their metabolites between patients and healthy controls; however, during treatment the concentrations of HVA and MHPG were significantly reduced only in the schizophrenics who responded to treatment. Moreover, the HVA and MHPG reductions correlated significantly with improvements in BPRS scores. Since their plasma levels reflect to some extent central dopaminergic and noradrenergic activities, respectively, the present findings suggest the involvement of these systems in the pathogenesis of schizophrenia as well as the usefulness of such measurements as predictors of responsiveness to neuroleptics.

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