Selection of viable in vitro-fertilized bovine embryos using time-lapse monitoring in microwell culture dishes
S Sugimura, T Akai, K Imai - Journal of Reproduction and …, 2017 - jstage.jst.go.jp
S Sugimura, T Akai, K Imai
Journal of Reproduction and Development, 2017•jstage.jst.go.jpConventionally, in vitro-fertilized (IVF) bovine embryos for transfer are morphologically
evaluated at day 7–8 of embryo culture. This method is, however, subjective and results in
unreliable selection. We previously described a novel selection system for IVF bovine
blastocysts for transfer that traces the development of individual embryos with time-lapse
monitoring in our specially developed microwell culture dishes (LinKID micro25). The
system can noninvasively identify prognostic factors that reflect viability after transfer. By …
evaluated at day 7–8 of embryo culture. This method is, however, subjective and results in
unreliable selection. We previously described a novel selection system for IVF bovine
blastocysts for transfer that traces the development of individual embryos with time-lapse
monitoring in our specially developed microwell culture dishes (LinKID micro25). The
system can noninvasively identify prognostic factors that reflect viability after transfer. By …
Abstract
Conventionally, in vitro-fertilized (IVF) bovine embryos for transfer are morphologically evaluated at day 7–8 of embryo culture. This method is, however, subjective and results in unreliable selection. We previously described a novel selection system for IVF bovine blastocysts for transfer that traces the development of individual embryos with time-lapse monitoring in our specially developed microwell culture dishes (LinKID micro25). The system can noninvasively identify prognostic factors that reflect viability after transfer. By assessing a combination of identified prognostic factors—timing of the first cleavage; number of blastomeres at the end of the first cleavage; and number of blastomeres at the onset of lag-phase, which results in temporary developmental arrest during the fourth or fifth cell cycle—the pregnancy rate was improved over using conventional morphological evaluation. Time-lapse monitoring with LinKID micro25 could facilitate objective and reliable selection of healthy IVF bovine embryos. Here, we review the novel bovine embryo selection system that allows for prediction of viability after transfer.
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