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Jiang, J.Y. et al.

Jiang, Mizuno, Mizutani, Sasada, Sato,

Parthenogenetic activation and subsequent development of rat oocytes in vitro.

Studies were undertaken to determine whether electrical stimulation, or ethanol treatment alone or in combination with 6-dimethylaminopurine (6-DMAP) influenced the rate of parthenogenetic activation of rat oocytes. The percentages of activated oocytes with pronuclei (89-91%) and those developed to the two-cell stage (68-72%) were significantly higher after electrical stimulation with direct current (DC) at 100 V/mm, 99 microsec once or twice, than when other DC voltages (75, 150, and 200) were applied or when ethanol or 6-DMAP treatment was given alone. However, none of the activated oocytes developed beyond the four-cell stage. The percentages of activated oocytes with pronuclei (100%) that developed to the two-cell (100%), eight-cell (89%) and blastocyst stages (50%) were significantly higher when electrical stimulation was followed by treatment with 2 mM 6-DMAP for 4 hr than when other combined procedures were applied. In conclusion, the results of the present study clearly showed that combined treatment of electrical stimulation or ethanol with 6-DMAP induces parthenogenetic activation and subsequent development of rat oocytes in vitro.[1]

References

Parthenogenetic activation and subsequent development of rat oocytes in vitro. Jiang, J.Y., Mizuno, S., Mizutani, E., Sasada, H., Sato, E. Mol. Reprod. Dev. (2002) [Pubmed]

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