Nematodicidal activity of flubendazole and its reduced metabolite on a murine model of Trichinella spiralis Infection.

URBIZU, L; CONFALONIERI, A; SANCHEZ BRUNI S; LANUSSE, C; ALVAREZ, I

CHEMOTHERAPY

KARGER

Lugar: Basel; Año: 2012 vol. 58 p. 295 - 298

0009-3157

Background: Flubendazole (FLBZ) is a broad-spectrum benzimidazole anthelmintic compound. The parent FLBZ is metabolized to its reduced (R-FLBZ) and hydrolyzed (HFLBZ) metabolites. There are no data on the potential nematicidal activity of R-FLBZ, the main plasma metabolite found in sheep and mice. The goal of the current work was to assess the efficacy of FLBZ and R-FLBZ against Trichinella spiralis in a mouse model. Methods: Both compounds were administered to Balb/c mice infected with T. spiralis as either a cyclodextrin aqueous solution or as a carboxymethylcellulose suspension. Treatments were performed orally (5 mg/kg) at 1 day after infection with T. spiralis . The efficacy of the treatments was assessed at day 6 after infection. Results: While the efficacy obtained for FLBZ and R-FLBZ administered as a solution was 94 and 98%, respectively, the efficacies obtained after the treatment with FLBZ suspensions were 38% (FLBZ) and 64% (R-FLBZ). Conclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselFlubendazole (FLBZ) is a broad-spectrum benzimidazole anthelmintic compound. The parent FLBZ is metabolized to its reduced (R-FLBZ) and hydrolyzed (HFLBZ) metabolites. There are no data on the potential nematicidal activity of R-FLBZ, the main plasma metabolite found in sheep and mice. The goal of the current work was to assess the efficacy of FLBZ and R-FLBZ against Trichinella spiralis in a mouse model. Methods: Both compounds were administered to Balb/c mice infected with T. spiralis as either a cyclodextrin aqueous solution or as a carboxymethylcellulose suspension. Treatments were performed orally (5 mg/kg) at 1 day after infection with T. spiralis . The efficacy of the treatments was assessed at day 6 after infection. Results: While the efficacy obtained for FLBZ and R-FLBZ administered as a solution was 94 and 98%, respectively, the efficacies obtained after the treatment with FLBZ suspensions were 38% (FLBZ) and 64% (R-FLBZ). Conclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselTrichinella spiralis in a mouse model. Methods: Both compounds were administered to Balb/c mice infected with T. spiralis as either a cyclodextrin aqueous solution or as a carboxymethylcellulose suspension. Treatments were performed orally (5 mg/kg) at 1 day after infection with T. spiralis . The efficacy of the treatments was assessed at day 6 after infection. Results: While the efficacy obtained for FLBZ and R-FLBZ administered as a solution was 94 and 98%, respectively, the efficacies obtained after the treatment with FLBZ suspensions were 38% (FLBZ) and 64% (R-FLBZ). Conclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselMethods: Both compounds were administered to Balb/c mice infected with T. spiralis as either a cyclodextrin aqueous solution or as a carboxymethylcellulose suspension. Treatments were performed orally (5 mg/kg) at 1 day after infection with T. spiralis . The efficacy of the treatments was assessed at day 6 after infection. Results: While the efficacy obtained for FLBZ and R-FLBZ administered as a solution was 94 and 98%, respectively, the efficacies obtained after the treatment with FLBZ suspensions were 38% (FLBZ) and 64% (R-FLBZ). Conclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselT. spiralis as either a cyclodextrin aqueous solution or as a carboxymethylcellulose suspension. Treatments were performed orally (5 mg/kg) at 1 day after infection with T. spiralis . The efficacy of the treatments was assessed at day 6 after infection. Results: While the efficacy obtained for FLBZ and R-FLBZ administered as a solution was 94 and 98%, respectively, the efficacies obtained after the treatment with FLBZ suspensions were 38% (FLBZ) and 64% (R-FLBZ). Conclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselT. spiralis . The efficacy of the treatments was assessed at day 6 after infection. Results: While the efficacy obtained for FLBZ and R-FLBZ administered as a solution was 94 and 98%, respectively, the efficacies obtained after the treatment with FLBZ suspensions were 38% (FLBZ) and 64% (R-FLBZ). Conclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselResults: While the efficacy obtained for FLBZ and R-FLBZ administered as a solution was 94 and 98%, respectively, the efficacies obtained after the treatment with FLBZ suspensions were 38% (FLBZ) and 64% (R-FLBZ). Conclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselConclusion: Under the current experimental conditions, a high nematicidal efficacy of both FLBZ and R-FLBZ administered as solution preparations was observed. Copyright © 2012 S. Karger AG, BaselCopyright © 2012 S. Karger AG, Basel