کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4371754 | 1302539 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cytochalasin D abolishes the schistosomicidal activity of praziquantel
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
ایمنی شناسی و میکروب شناسی
انگل شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To test the hypothesis that calcium channels of schistosomes are the targets for the action of praziquantel, we subjected schistosomes in vitro to pharmacological agents capable of interfering with the functioning of calcium channels. After 1-h exposure to these agents, praziquantel was added and incubation continued overnight. Worms were then washed, resuspended in drug-free medium and observed during the following 7-10 days. About 50% of schistosomes pre-exposed to the calcium channel blockers nicardipine and nifedipine were able to survive a praziquantel concentration (3 μM) that normally killed the majority of adult male worms. Since the organization of the actin cytoskeleton controls the activity of calcium channels in a number of different systems, we also pre-exposed schistosomes to the actin depolymerizing agent cytochalasin D. This treatment rendered the parasites completely refractory to the effects of very high praziquantel levels (up to 36 μM). These results are consistent with the hypothesis that schistosome calcium channels are involved in the mechanism of action of praziquantel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Parasitology - Volume 115, Issue 4, April 2007, Pages 344-351
Journal: Experimental Parasitology - Volume 115, Issue 4, April 2007, Pages 344-351
نویسندگان
Livia Pica-Mattoccia, Cristiana Valle, Annalisa Basso, Anna Rita Troiani, Fabio Vigorosi, Piero Liberti, Alfredo Festucci, Donato Cioli,