Volume 101, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Strongyloidiasis, caused by infection, is an important neglected tropical disease that causes significant public health problems in the tropics and subtropics. The disease can persist in hosts for decades and may be life-threatening because of hyperinfection and dissemination. Ivermectin (mostly) and albendazole are the most common anthelmintics used for treatment. Albendazole is suboptimal for this parasite, and although ivermectin is quite effective in immunocompromised patients, a multiple-course regimen is required. Furthermore, reliance on a single drug class for treating intestinal nematodes is a recipe for future failure. Therefore, it is important to discover new anthelmintics to treat or prevent human strongyloidiasis. One promising candidate is the crystal protein Cry5B. Cry5B is highly potent against parasitic nematodes, for example, hookworms and . Here, we investigated the potential of Cry5B against . Multiple stages of , including the first larval stage (L1s), infective stage (iL3s), free-living adult stage, and parasitic female stage, were all susceptible to Cry5B as indicated by impairment of motility and decreased viability in vitro. In summary, Cry5B demonstrated strong potential as an effective anthelmintic for treatment and transmission control of human strongyloidiasis, justifying further experiments to investigate in vivo therapeutic efficacy.


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  • Received : 27 Jan 2019
  • Accepted : 29 Jul 2019
  • Published online : 16 Sep 2019

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