Abstract:
:The therapeutic spectrum of nemonapride, a new substituted benzamide, and its relationship with plasma concentrations of the drug and prolactin were investigated by a fixed-dose study (18 mg/day for 3 weeks) in 31 patients with acutely exacerbated schizophrenia. Of 31 patients, 25 (80.6%) were responders who showed a reduction in symptoms (percentage of improvement) of 50% or more after 3 weeks. The mean values of percentage of improvement in scores on the total Brief Psychiatric Rating Scale (BPRS) and the five subscale symptoms were 71.5% for total, 73.2% for Positive, 86.0% for Excitement, 53.9% for Negative, 84.2% for Cognitive, and 67.5% for Anxiety-Depression. Responders had higher percentage of improvement in positive (84.6 +/- 17.0% vs. 25.9 +/- 15.7%; p < 0.001) and anxiety-depression (76.9 +/- 18.8% vs. 28.5 +/- 39.9%; p < 0.005) symptoms than did nonresponders after 3 weeks. The percentage of improvement in total BPRS after 2 weeks was well correlated with that after 3 weeks (Spearman rank correlation coefficient: r(s) = 0.711; p < 0.01). There was an inverted U-shaped relationship between plasma drug concentrations (nemonapride plus desmethylnemonapride) and percentage of improvement in total BPRS symptoms after a 3-week treatment (y = 46.9 + 73.9x - 44.2x2; p < 0.001). These findings suggest that nemonapride has a broad therapeutic spectrum in the treatment of acute schizophrenia. The improvements in scores for the Positive and Anxiety-Depression subscale symptoms are regarded as determinant factors for total response to nemonapride. An assessment of clinical status after 2 weeks and plasma drug monitoring may be useful for the prediction of the final outcome for patients.
journal_name
J Clin Psychopharmacoljournal_title
Journal of clinical psychopharmacologyauthors
Kondo T,Mihara K,Yasui N,Nagashima U,Ono S,Kaneko S,Ohkubo T,Osanai T,Sugawara K,Otani Kdoi
10.1097/00004714-200008000-00003subject
Has Abstractpub_date
2000-08-01 00:00:00pages
404-9issue
4eissn
0271-0749issn
1533-712Xjournal_volume
20pub_type
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journal_title:Journal of clinical psychopharmacology
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