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Giardia lamblia: a new target for miltefosine
1Department of Medical Parasitology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. mahaeissa19@yahoo.com
International Journal for Parasitology
|July 13, 2012
Summary
Miltefosine, an antileishmanial drug, effectively eliminates Giardia lamblia parasites in vitro and in vivo mouse models. This study suggests miltefosine as a potential new therapeutic agent for treating giardiasis.
Area of Science:
- Parasitology
- Infectious Diseases
- Drug Discovery
Background:
- Giardiasis, caused by Giardia lamblia, is a prevalent intestinal infection globally.
- Drug resistance and side effects necessitate new therapeutic agents for giardiasis treatment.
Purpose of the Study:
- To investigate the efficacy of hexadecylphosphocholine (miltefosine) against Giardia lamblia.
- To evaluate miltefosine as a potential treatment for giardiasis.
Main Methods:
- In vitro susceptibility testing of G. lamblia trophozoites to miltefosine.
- In vivo efficacy study in Giardia-infected Swiss albino mice using oral administration of miltefosine.
- Scanning and transmission electron microscopy to assess morphological changes.
Main Results:
- Miltefosine demonstrated significant in vitro activity against G. lamblia trophozoites (EC50s 20-40 µM, EC90s 20-80 µM).
- Complete parasite elimination and improved intestinal pathology were observed in mice treated with miltefosine (20 mg/kg/day for 3 days).
- Electron microscopy revealed significant alterations in the cell membrane and adhesive disc of G. lamblia trophozoites.
Conclusions:
- Miltefosine exhibits potent anti-giardial activity, both in vitro and in vivo.
- Miltefosine is a promising candidate for the development of novel giardiasis treatments.
- This study identifies Giardia lamblia as a potential new target for miltefosine therapy.
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