کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8405136 | 1544750 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel wide-capacity method for vitrification of caprine ovaries: Ovarian Tissue Cryosystem (OTC)
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
In this study we aimed testing the efficiency of a newly developed device for vitrification of ovaries without contact with liquid nitrogen, Ovarian Tissue Cryosystem (OTC). From each ovarian pair, fragments were recovered and immediately fixed for analysis (fresh control) or submitted to vitrification (fragments, hemi-ovary or whole ovary), either or not followed by in vitro culture for two days. Vitrification was performed using the OTC system. The OTC is a cylindrical structure made by stainless steel and composed by three pieces (basis, insert and cover), which can be hermetically closed avoiding contact of the tissue with liquid nitrogen during vitrification. Before and after culture, the ovarian tissue was histologically evaluated. Independently from the size of the ovarian tissue, it was observed a decrease (PÂ <Â 0.05) in the rates of normal preantral follicles when fragments (58.1%), hemi-ovary (54.4%) and whole ovary (54.3%) were vitrified, in comparison with fresh control (68.1%). These data were confirmed by ultrastructural analysis, which showed a great extension of degeneration in follicles vitrified in the whole ovary. Follicular survival after vitrification followed by culture was higher (PÂ <Â 0.05) when ovarian fragments were vitrified (36.1%) than in those enclosed in vitrified hemi-ovary (22.3%) or whole ovary (18.4%). In conclusion, the Ovarian Tissue Cryosystem (OTC) opens a new possibility for successful vitrification of caprine ovarian fragments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Reproduction Science - Volume 138, Issues 3â4, May 2013, Pages 220-227
Journal: Animal Reproduction Science - Volume 138, Issues 3â4, May 2013, Pages 220-227
نویسندگان
A.A. Carvalho, L.R. Faustino, C.M.G. Silva, S.V. Castro, C.A.P. Lopes, R.R. Santos, S.N. Báo, J.R. Figueiredo, A.P.R. Rodrigues,