کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2074783 1544816 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Post-testicular changes in the density and distribution of intramembrane particles of stallion sperm surface domains
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Post-testicular changes in the density and distribution of intramembrane particles of stallion sperm surface domains
چکیده انگلیسی
Freeze-fracture replicas of stallion spermatozoa, collected from the proximal caput, corpus and cauda epididymides regions, were analyzed by electron microscopy to explore the distribution and density of intramembrane particles (IMP). Conspicuous differences in density and arrangement of the IMP were observed in the different topographical domains of mature and immature spermatozoa. A reduction of IMP, especially remarkable in the post-acrosomal domain, was observed in mature epididymal spermatozoa when compared with samples collected from ductuli efferentes. Some structural species-specific differences were also observed. The significance of these changes has not been determined, but remodeling of membrane components during developmental processes constitutes a fine control mechanism to ensure that key molecules are in the correct membrane position and during an appropriate timeframe to mediate fertilization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Reproduction Science - Volume 100, Issues 1–2, July 2007, Pages 204-210
نویسندگان
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