Efficacies of Albendazole Sulfoxide and Albendazole Sulfone against In Vitro-Cultivated Echinococcus multilocularis Metacestodes
| Autor: | Wolfgang Thormann, Tania Cavaliero, Katrin Ingold, Andrew Hemphill, Peter Bigler, Bruno Gottstein |
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| Rok vydání: | 1999 |
| Předmět: |
Benzimidazole
Metabolite Cestoda Mebendazole Pharmacology Albendazole Echinococcus multilocularis chemistry.chemical_compound Echinococcosis medicine Animals Pharmacology (medical) Mechanisms of Action: Physiological Effects Chromatography High Pressure Liquid Anthelmintics biology biology.organism_classification medicine.disease Echinococcus Microscopy Electron Metacestode Infectious Diseases Biochemistry chemistry Parasitic disease medicine.drug |
| Zdroj: | Antimicrobial Agents and Chemotherapy. 43:1052-1061 |
| ISSN: | 1098-6596 0066-4804 |
| DOI: | 10.1128/aac.43.5.1052 |
| Popis: | The metacestode stage of Echinococcus multilocularis is the causative agent of alveolar echinococcosis (AE), a parasitic disease affecting the liver, with occasional metastasis into other organs. Benzimidazole carbamate derivatives such as mebendazole and albendazole are currently used for chemotherapeutic treatment of AE. Albendazole is poorly resorbed and is metabolically converted to its main metabolite albendazole sulfoxide, which is believed to be the active component, and further to albendazole sulfone. Chemotherapy with albendazole has been shown to have a parasitostatic rather than a parasitocidal effect; it is not effective in all cases, and the recurrence rate is rather high once chemotherapy is stopped. Thus, development of new means of chemotherapy of AE is needed. This could include modifications of benzimidazoles and elucidiation of the respective biological pathways. In this study we performed in vitro drug treatment of E. multilocularis metacestodes with albendazole sulfoxide and albendazole sulfone. High-performance liquid chromatography analysis of vesicle fluids showed that the drugs were taken up rapidly by the parasite. Transmission electron microscopic investigation of parasite tissues and nuclear magnetic resonance spectroscopy of vesicle fluids demonstrated that albendazole sulfoxide and albendazole sulfone had similar effects with respect to parasite ultrastructure and changes in metabolites in vesicle fluids. This study shows that the in vitro cultivation model presented here provides an ideal first-round test system for screening of antiparasite drugs. |
| Databáze: | OpenAIRE |
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