Evaluation of benznidazole treatment combined with nifurtimox, posaconazole or AmBisome® in mice infected with Trypanosoma cruzi strains
Autor: | Carine Truyens, Yves Carlier, Sabrina Cencig, Nicolas Coltel |
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Rok vydání: | 2012 |
Předmět: |
Microbiology (medical)
Drug Posaconazole Cyclophosphamide Trypanosoma cruzi media_common.quotation_subject 030231 tropical medicine Pharmacology Parasitemia Real-Time Polymerase Chain Reaction Parasite Load Mice 03 medical and health sciences 0302 clinical medicine Immune system Amphotericin B medicine Animals Chagas Disease Pharmacology (medical) Nifurtimox media_common Mice Inbred BALB C 0303 health sciences biology 030306 microbiology General Medicine DNA Protozoan Triazoles biology.organism_classification Trypanocidal Agents 3. Good health Disease Models Animal Treatment Outcome Infectious Diseases Real-time polymerase chain reaction Nitroimidazoles Benznidazole Immunology Drug Therapy Combination Female medicine.drug |
Zdroj: | International Journal of Antimicrobial Agents; Vol 40 |
ISSN: | 0924-8579 |
Popis: | The present work aimed to investigate the curative effect of benznidazole (BZL) in combination with other patented drugs [nifurtimox (NFX), posaconazole (POS) or AmBisome(®) (AMB)] in mice acutely or chronically infected with either a BZL-susceptible (Tulahuen) or a BZL-partially-resistant (Y) strain of Trypanosoma cruzi. To appreciate the eventual advantage of such combinations, infected mice were treated for short durations (non-curative) of each individual treatment. Cure rates were determined by investigating blood parasites (microscopic examination) and parasite DNA (quantitative PCR) after submitting treated mice to immune suppression with cyclophosphamide. The results mainly suggest that shorter durations of treatment combining BZL and POS or NFX might cure mice acutely or chronically infected with the Tulahuen strain, whereas the combination of BZL with AMB does not have such an effect. Moreover, the association BZL+POS does not improve the curative effect of POS (all used for shorter durations) in infection with the Y strain. Shortening the duration of treatment whilst keeping a complete curative effect deserves interest in limiting adverse reactions due to dose-cumulative toxic effects of long treatment. Genotyping of the T. cruzi strain(s) infecting patients might also allow a better adaptation of individual therapeutic schedules, improving both the efficiency and safety of trypanocidal treatment. This preliminary experimental study should encourage further investigations to find the best combination of adequate drug concentrations and timing of treatment. |
Databáze: | OpenAIRE |
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