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Efficacy of praziquantel against Giardia lamblia in rats: parasitological, pathological and therapeutic study
Journal of the Egyptian Society of Parasitology. 2002; 32 (1): 201-18
em Inglês | IMEMR | ID: emr-59717
ABSTRACT
Four-five weeks old rats were included in this study and divided into two experimental groups received single or split doses of praziquantel [PZQ] as well as two control groups, one infected untreated and the other normal healthy rats. The effect of infection on rat growth as well as the jejunal and duodenal architecture was histopathologically studied after H and E staining. The jejunal ultrastructure was examined by SEM and TEM. The effect of PZQ was evaluated using the same techniques. It was observed that infected as well as infected treated animals had less weight than the healthy controls. The intensity of infection decreased gradually after treatment. The cure rate was 100% after split dose and 80% after a single dose. Altered villus height and cryptic depth were the characteristic changes in the architecture of the duodenum and jejunum, more pronounced in the latter. The split dose of PZQ revealed a more improvement of the histopathological findings than the single dose. By SEM, circular imprints representing defects in the villi were observed in the jejunum. By TEM deformation of microvillar architecture was observed together with organellar changes in the RER and the mitochondria after PZQ treatment
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Índice: IMEMR (Mediterrâneo Oriental) Assunto principal: Praziquantel / Ratos / Microscopia Eletrônica / Giardíase / Resultado do Tratamento / Duodeno / Jejuno / Animais de Laboratório Limite: Animais Idioma: Inglês Revista: J. Egypt. Soc. Parasitol. Ano de publicação: 2002

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Índice: IMEMR (Mediterrâneo Oriental) Assunto principal: Praziquantel / Ratos / Microscopia Eletrônica / Giardíase / Resultado do Tratamento / Duodeno / Jejuno / Animais de Laboratório Limite: Animais Idioma: Inglês Revista: J. Egypt. Soc. Parasitol. Ano de publicação: 2002