کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2075166 1544804 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of time of first cleavage, developmental stage, and delipidation of nuclear-transferred porcine blastocysts on survival following vitrification
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
The effects of time of first cleavage, developmental stage, and delipidation of nuclear-transferred porcine blastocysts on survival following vitrification
چکیده انگلیسی

The effect of removing cytoplasmic lipid droplets (delipidation) at the 2-cell and developmental stages on the survival of porcine somatic cell nuclear-transferred blastocysts developed from the enucleated oocytes receiving somatic cells from kidney of an adult female after cryopreservation was examined. Vitrification was performed using the Cryoloop method with a small volume of medium (0.5 μl). To select 2-cell embryos with a high potential to develop into blastocysts, the relationship between the timing of the first cleavage and the developmental potential was examined. The potential of nuclear-transferred oocytes to develop into blastocysts in the intermediate-cleavage group (20–24 h after activation, 25%) was slightly or significantly (P < 0.05) higher than that in fast-cleavage (<20 h after activation, 13%) and slow-cleavage groups (>24 h after activation, 5%). Most non-delipidated blastocysts did not survive after thawing (0% for early-stage and 9% for advanced-stage blastocysts), but the survival rate of delipidated blastocysts 48 h after culture (54% and 72%, respectively) was not significantly different from that of non-vitrified blastocysts (80% and 92%, respectively). The survival rate of advanced-stage blastocysts after vitrification was slightly higher than that of early-stage blastocysts. The present study demonstrates that somatic cell nuclear-transferred porcine blastocysts developed from embryos selected at the 2-cell stage can be preserved by vitrification with a small volume of medium if the lipid droplets of the embryos are first removed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Reproduction Science - Volume 106, Issues 3–4, July 2008, Pages 402–411
نویسندگان
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