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- W2123549073 abstract "The present study evaluated the effect of protein supplementation in potassium simplex optimization medium (KSOM) on bovine preimplantation embryo development. The in vitro fertilized (IVF) (Experiment 1), non-transgenic (Experiment 2) and transgenic cloned embryos (Experiment 3) were cultured for 192 h in KSOM supplemented with 0.8% BSA (KSOM-BSA), 10% FBS (KSOM-FBS) or 0.01% PVA (KSOM-PVA). Transfected cumulus cells with an expression plasmid for human alpha1-antitrypsin gene and a green fluorescent protein (GFP) marker were used to produce transgenic cloned embryos. Modified synthetic oviductal fluid (mSOF) supplemented with 0.8% BSA (mSOF-BSA) was used as a control medium. In Experiment 1, cleavage rate was significantly (P < 0.05) lower (69.1%) in IVF embryos cultured in KSOM-FBS than in KSOM-BSA (80.3%). The rate of hatching/hatched blastocyst formation was significantly (P < 0.05) lower in embryos cultured in KSOM-PVA than in KSOM-FBS (2.2% versus 10.8%). Blastocysts cultured in KSOM-FBS contained significantly (P < 0.06) higher numbers of inner cell mass cells (50.4 +/- 20.2) than those cultured in mSOF-BSA (36.9 +/- 19.2). In Experiment 2, the rate of blastocyst formation was significantly (P < 0.05) lower (20.5%) in embryos cultured in KSOM-PVA than in other culture media (33.3-38.5%). The rate of hatching/hatched blastocysts was significantly (P < 0.05) lower in KSOM-PVA (13.9%) and KSOM-FBS (17.1%) than in KSOM-BSA (30.8%) and mSOF-BSA (33.9%). The numbers of total and trophectoderm cells (104.6 +/- 32.2 and 71.7 +/- 25.5, respectively) were significantly (P < 0.05) lower in blastocysts cultured in KSOM-PVA than in KSOM-BSA (125.7 +/- 39.7 and 91.7 +/- 36.2, respectively). In Experiment 3, no significant differences in embryo development, GFP expression and blastocyst cell numbers were observed among the culture groups. In conclusion, the present study demonstrated that KSOM and mSOF supplemented with BSA were equally effective in supporting development of bovine non-transgenic and transgenic cloned embryos. Moreover, different developmental competence in response to protein supplementation of KSOM was observed between bovine non-transgenic and transgenic cloned embryos." @default.
- W2123549073 created "2016-06-24" @default.
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- W2123549073 date "2004-11-01" @default.
- W2123549073 modified "2023-10-16" @default.
- W2123549073 title "Effect of protein supplementation in potassium simplex optimization medium on preimplantation development of bovine non-transgenic and transgenic cloned embryos" @default.
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- W2123549073 doi "https://doi.org/10.1016/j.theriogenology.2004.02.006" @default.
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