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1 April 2010 Culture Media Affect Follicle Survival and Oocyte Maturation in Preantral Mouse Follicle Cultures
Shouko Nonowaki, Katsuhiko Takahashi, Toshitaka Horiuchi
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To investigate the effect of media on mouse follicular development and oocyte maturation in vitro, we compared eight culture media. Early preantral follicles were mechanically dissected from the ovaries of 14-day-old mice and cultured for 10 days. The tested media were: α-MEM, D-MEM/F-12, D-MEM with high glucose (4.5 g/L) (D-MEM[H]) or low glucose (1 g/L) (D-MEM[L]), Weymouth, M199, IMDM, and RPMI1640. All of the media were supplemented with 5% FBS, ITS, 100 mlU/ ml rhFSH, 1 mlU/ml rhLH and, 0.5% gentamicin. Compared to the other media (P < 0.05), a higher percentage of follicles survived and antral-like cavity formation was seen after 10 days of culture when the follicles were cultured in α-MEM, Waymouth, D-MEM/F-12, or D-MEM(L). Among the four media with higher follicle survival, the oocyte diameter on day 10 of culture was largest in α-MEM and smallest in Waymouth. The highest percentages of MII oocytes were obtained when follicles were cultured in α-MEM, D-MEM(L), and D-MEM/F-12. In contrast, in Waymouth, no MII oocytes were obtained. The media used for mouse preantral follicle growth in vitro affected follicle survival and oocyte maturation. Of the media that we tested, α-MEM, D-MEM(L), and D-MEM/F-12 were superior for mouse preantral follicle cultures.

Shouko Nonowaki, Katsuhiko Takahashi, and Toshitaka Horiuchi "Culture Media Affect Follicle Survival and Oocyte Maturation in Preantral Mouse Follicle Cultures," Journal of Mammalian Ova Research 27(1), 35-41, (1 April 2010).
Received: 21 August 2009; Accepted: 1 September 2009; Published: 1 April 2010

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Culture medium
in vitro growth
preantral follicle
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