Strongyloides ratti: in vitro and in vivo activity of tribendimidine.
BACKGROUND: Strongyloidiasis is a truly neglected tropical disease, but its public health significance is far from being negligible. At present, only a few drugs are available for the treatment and control of strongyloidiasis. METHODOLOGY/PRINCIPAL FINDINGS: We investigated the activity of tribendim...
| Published in: | PLoS Neglected Tropical Diseases |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2008
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| Subjects: | |
| Online Access: | https://doi.org/10.1371/journal.pntd.0000136 https://doaj.org/article/720bb4654b0e403c97d229271d468db7 |
| Summary: | BACKGROUND: Strongyloidiasis is a truly neglected tropical disease, but its public health significance is far from being negligible. At present, only a few drugs are available for the treatment and control of strongyloidiasis. METHODOLOGY/PRINCIPAL FINDINGS: We investigated the activity of tribendimidine against third-stage larvae (L(3)) of Strongyloides ratti in vitro and against juvenile and adult stages of the parasite in vivo. S. ratti larvae incubated in PBS buffer containing 10-100 microg/ml tribendimidine died within 24 hours. A single 50 mg/kg oral dose of tribendimidine administered to rats infected with 1-day-old S. ratti showed no effect. The same dose administered to rats harboring a 2-day-old infection showed a moderate reduction of the intestinal parasite load. Three days post-exposure a significant reduction of the immature worm burden was found. Administration of tribendimidine at doses of 50 mg/kg and above to rats harboring mature S. ratti resulted in a complete elimination of the larval and adult worm burden. For comparison, we also administered ivermectin at a single 0.5 mg/kg oral dose to rats infected with adult S. ratti and found a 90% reduction of larvae and a 100% reduction of adult worms. CONCLUSION/SIGNIFICANCE: Tribendimidine exhibits activity against S. ratti in vitro and in vivo. The effect of tribendimidine in humans infected with S. stercoralis should be assessed. |
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