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- W2063439993 abstract "Pre-pubertal pig oocytes display reduced developmental competence compared with adult oocytes following in vitro maturation (IVM). Exposure to dibutyryl cyclic adenosine monophosphate (dbcAMP) for the first 20 hr IVM improves development of pre-pubertal oocytes, suggesting that their cAMP content may be inadequate. This study examined the effect of 1 mM dbcAMP treatment for the first 22 hr of IVM on the cAMP content, meiotic progression, and embryo development of pre-pubertal and adult oocytes. In control groups, a two-fold increase in cAMP was observed in adult oocytes after 22 hr IVM, with no change in pre-pubertal oocyte cAMP content. At 22 hr IVM, dbcAMP treatment resulted in two- and five-fold increases in pre-pubertal and adult oocyte cAMP, respectively. After 22 hr control IVM, a greater proportion of pre-pubertal oocytes occupied metaphase I (MI) compared with adult oocytes (69% vs. 49%). dbcAMP treatment reduced the proportion of pre-pubertal and adult oocytes in MI stage at 22 hr. Despite dbcAMP treatment, the proportion of pre-pubertal oocytes in the MI stage at 22 hr remained higher than that of adult oocytes. In control groups, adult oocytes displayed a greater ability to form blastocysts compared with pre-pubertal oocytes following either parthenogenetic activation (59% vs. 25%) or in vitro fertilization (IVF) (47% vs. 19%). dbcAMP treatment increased subsequent blastocyst formation rates of pre-pubertal oocytes, whereas blastocyst formation rates of adult oocytes remained unchanged. Our results suggest that the reduced developmental capacity of pre-pubertal oocytes may be a consequence of their reduced ability to accumulate cAMP during IVM." @default.
- W2063439993 created "2016-06-24" @default.
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- W2063439993 date "2006-01-01" @default.
- W2063439993 modified "2023-09-27" @default.
- W2063439993 title "Effect of dibutyryl cAMP on the cAMP content, meiotic progression, and developmental potential of in vitro matured pre-pubertal and adult pig oocytes" @default.
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- W2063439993 doi "https://doi.org/10.1002/mrd.20555" @default.
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