Bioavailability of two oral formulas of secnidazole in healthy volunteers

Secnidazole is an antimicrobial agent used primarily in the treatment of amoebiasis. For this bioequivalence study of secnidazole, twenty-eight healthy female volunteers were enrolled in a randomized crossover study. Each volunteer was given a single oral dose of secnidazole test preparation and the...

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Veröffentlicht in:Brazilian Journal of Pharmaceutical Sciences 2009-12, Vol.45 (4), p.687-692
Hauptverfasser: Montovani, Patrícia Andréa Bertuol, Pinto, Ana Maria Pugens, Santos, Mauricio Bedim dos, Vieira, Daiane Loss, Prado, Anelise Weich do, Manfio, Josélia Larger
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Sprache:eng
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Zusammenfassung:Secnidazole is an antimicrobial agent used primarily in the treatment of amoebiasis. For this bioequivalence study of secnidazole, twenty-eight healthy female volunteers were enrolled in a randomized crossover study. Each volunteer was given a single oral dose of secnidazole test preparation and then the reference preparation, or vice versa, with a wash out interval of two weeks. The plasma concentrations of secnidazole were determined by HPLC, and the samples were extracted with tert-butyl-methyl-ether: dicloromethane (60:40, v/v). Secnidazole and its parent compound metronidazole were separated on a C18 column with water:acetonitrile (85:15, v/v) as the mobile phase, and monitored at 310 nm. The ratio of mean Cmax, AUC0-t and AUC0-∞ values for the test and reference products were within the predetermined range established by ANVISA, demonstrating that the two formulations are bioequivalent in rate and extent of absorption. Secnidazol é um agente antimicrobiano utilizado principalmente no tratamento da amebíase. Para este estudo de bioequivalência de secnidazol em voluntários saudáveis, foram incluídos vinte e oito voluntárias mulheres no estudo randomizado cruzado. Cada voluntária recebeu uma única dose oral de secnidazol do produto teste e referência para comparação, com um intervalo de wash-out de duas semanas. As concentrações plasmáticas de secnidazol foram determinados por CLAE, as amostras foram extraídas com terc-butil-metil-éter: dicloromethano (60:40, v/v). O secnidazol e seu padrão interno metronidazol foram separados em uma coluna (C18 ) com fase móvel água ultra-pura:acetonitrila (85:15, v/v) e monitorado em 310 nm. As razões entre as médias geométricas de Cmáx, ASC0-t e ASC0-∞, encontraram-se dentro do estabelecido pela ANVISA, demonstrando que as formulações são bioequivalentes quanto à taxa e extensão de absorção
ISSN:1984-8250
2175-9790
1984-8250
2175-9790
DOI:10.1590/S1984-82502009000400011