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Hycanthone dose-response in treatment of schistosomiasis mansoni in St. Lucia.
Am J Trop Med Hyg ; 25(4): 602-7, 1976 Jul.
Article em En | MEDLINE | ID: mdl-961979
Clinical trials of hycanthone (single intramuscular dose) were undertaken in schistosomiasis mansoni patients in St. Lucia at five dose levels: 3.0, 2.5, 2.0, 1.5, and 1.0 mg/kg body weight. The most common side effect, vomiting, decreased in frequency from 51% at the highest dose to 3% at the lowest; minor side effects showed a similar trend. Three fecal specimens were examined before and at 6 months after treatment by qualitative, quantitative, and hatching techniques. All dose levels caused reductions in egg excretion of 89 to 98%. Rates of cure (absence of eggs by all three methods) according to dose (descending), pretreatment egg output (0-19, 20-49, 50-399, 400+ eggs/ml feces), and age (0-7, 8-14, 15-29, 30+ years) were analyzed to estimate the effect of each variable if the others had been constant. For dose, the standardized percentage success rates were 53.9%, 62.0%, 51.2% 54.0%, and 27.4%; for egg output, 67.0%, 51.8%, 43.2%, and 21.7%; and for age, 25.2%, 34.5%, 59.3% and 57.4%. Logit regression analysis shows a significant difference in cure rate (a) between the lowest dose and all others, among which latter there was no difference, (b) between patients excreting 0 to 49 eggs/ml before treatment and those excreting 50+ eggs/ml, and (c) between the age groups 0 to 14 and 15+ years. All dose levels caused some regression in enlargement of liver or spleen. A dose of 1.5 to 2.0 mg/kg body weight is considered to be as effective as one of 3.0 mg/kg and more acceptable for a control program because of the marked reduction in side effects.
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Schistosoma mansoni / Esquistossomose / Tioxantenos / Hicantone Tipo de estudo: Qualitative_research Limite: Adolescent / Adult / Child / Child, preschool / Female / Humans / Infant / Male País/Região como assunto: Caribe Idioma: En Revista: Am J Trop Med Hyg Ano de publicação: 1976 Tipo de documento: Article País de publicação: Estados Unidos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Schistosoma mansoni / Esquistossomose / Tioxantenos / Hicantone Tipo de estudo: Qualitative_research Limite: Adolescent / Adult / Child / Child, preschool / Female / Humans / Infant / Male País/Região como assunto: Caribe Idioma: En Revista: Am J Trop Med Hyg Ano de publicação: 1976 Tipo de documento: Article País de publicação: Estados Unidos