کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4371521 1302526 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbohydrate analysis of Acanthamoeba castellanii
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی انگل شناسی
پیش نمایش صفحه اول مقاله
Carbohydrate analysis of Acanthamoeba castellanii
چکیده انگلیسی

We analyzed biochemically Acanthamoeba castellanii trophozoites, intact cysts and cyst walls belonging to the T4 genotype using gas chromatography combined with mass spectrometry. Cyst walls were prepared by removing intracellular material from cysts by pre-treating them with sodium dodecyl sulphate (SDS) containing dithiothreitol, and then subjecting these to a series of sequential enzymatic digestions using amyloglucosidase, papain, DNase, RNase and proteinase K. The resulting “cyst wall” material was subsequently lyophilized and subjected to glycosyl composition analysis. Transmission electron microscopy confirmed the removal of intracystic material following enzymatic treatment. Our results showed that treated A. castellanii trophozoites, intact cysts and cyst walls contained various sugar moieties, of which a high percentage was galactose and glucose, in addition to small amounts of mannose, and xylose. Linkage analysis revealed several types of glycosidic linkages including the 1,4-linked glucosyl conformation, indicative of cellulose. Inhibitor studies suggested that, beside sugar synthesis, cytoskeletal re-arrangement and mitogen-activated protein kinase-mediated pathways are involved in A. castellanii encystment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Parasitology - Volume 122, Issue 4, August 2009, Pages 338–343
نویسندگان
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