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Localization of Angiotensin II in Korean Bovine Follicles and Its Effects on IVM/IVF of Oocytes  

Quen, J. H. (College of Veterinary Medicine, Chungnam National University)
M. H. Lee (National Veterinary Research and Quarantine Service)
S. K. Kim (College of Veterinary Medicine, Chungnam National University)
Publication Information
Reproductive and Developmental Biology / v.28, no.1, 2004 , pp. 59-63 More about this Journal
Abstract
1. The concentrations of Ang. II were 7.20.91 ${\times}$ $10^3$ , 3.80.34 ${\times}$ $10^3$, 3.50.30 ${\times}$ $10^3$, 2.80.22 ${\times}$ $10^3$ pg/ml in bovine follicular fluids from 1∼3 mm, 3∼5 mm, 5∼7 mm and 8∼10 m follicles, respectively. The concentrations of Ang. II decreased in follicular fluids from large follicles. 2. When oocytes were cultured in media containing various concentrations of Ang. II, a higher proportion of oocytes developed to MII stage in medium with 100 ng/ml (79.5%) Ang II compare to that without Ang. II (58.8%). When oocytes from different sizes of follicles were separately cultured in media containing 100 ng/ml Ang. II, maturation rates were higher in oocytes from small and medium follicles those from controls. 3. GSH content in oocytes cultured for 24 hrs in TCM-199 medium containing 10 and 100 ng/ml of Ang. II was also higher than that of oocytes cultured in medium containing 0 or 10 ng/ml Ang. II. When oocytes were cultured in media containing 0, 10, 100, 1,000 ng/ml of Ang. II, the concentrations of GSH were 5.1M, 5.5M, 7.2M, 8.7M, respectively. 4. When oocytes were cultured in media containing various concentrations of 10, 100, 1,000 ng/ml Ang. II, in vitro maturation and developmental rates were 84.0%, 90.0%, 78.0% and 28.0%, 36.0%, 20.0%, respectively. When oocytes were cultured with an addition of Ang. II in media, in vitro maturation rates higher than that of their controls (76.0%).
Keywords
Korean bovine follicle; Angiotensin concentration; Developmental rate;
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