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Pharmacokinetic studies of antipsychotics in healthy volunteers versus patients.

机译:在健康志愿者与患者中抗精神病药的药代动力学研究。

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In clinical trials of dopamine-blocking antipsychotics, significant adverse events may occur in healthy volunteers at dose levels that are well tolerated by schizophrenic patients. Because of these differences in tolerability, bioequivalence and pharmacokinetic studies of antipsychotics should be performed in schizophrenic patients rather than in healthy volunteers. When clozapine is the drug being investigated, pharmacokinetic and bioequivalence studies should be carried out in real-life dosage conditions because the half-life of clozapine increases with multiple doses. Under real-life conditions, the evaluation of multiple doses of clozapine in a population of schizophrenic patients can provide direct therapeutic relevance to bioavailability findings. This article discusses patient recruitment and informed consent in pharmacokinetic trials of schizophrenia, issues in studying antipsychotic agents in healthy volunteers versus schizophrenic patients, and a bioequivalency study of Clozaril (Novartis Pharmaceuticals) and generic clozapine (Creighton [Sandoz]) in schizophrenic patients.
机译:在多巴胺阻断性抗精神病药的临床试验中,健康志愿者中的精神分裂症患者可以很好耐受的剂量水平可能会发生重大不良事件。由于耐受性上的这些差异,抗精神病药的生物等效性和药代动力学研究应在精神分裂症患者而不是健康志愿者中进行。当氯氮平是所研究的药物时,应在实际剂量条件下进行药代动力学和生物等效性研究,因为氯氮平的半衰期会随着多次剂量而增加。在现实生活中,对精神分裂症患者人群中多剂量氯氮平的评估可以提供与生物利用度研究结果直接相关的治疗方法。本文讨论了精神分裂症药代动力学试验中的患者招募和知情同意,在健康志愿者与精神分裂症患者中研究抗精神病药的问题以及精神分裂症患者中Clozaril(Novartis Pharmaceuticals)和通用Clozapine(Creighton [Sandoz])的生物等效性研究。

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