1993
DOI: 10.1530/jrf.0.0990353
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Osmotic and cytotoxic study of vitrification of immature bovine oocytes

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Cited by 96 publications
(64 citation statements)
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“…As judged by the rates of degenerated oocytes on day 1 in our work, both immature (group vM) and matured (group Mv) survived vitrification better than the other groups. Degeneration percentages are lower and cleavage rates are higher that those obtained by other authors [15,32,35], although development up to the morula and blastocyst stage is compromised. Such as observed in our work, a low correlation between cleavage and further embryonic development has been previously stated [9,36].…”
Section: Discussioncontrasting
confidence: 66%
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“…As judged by the rates of degenerated oocytes on day 1 in our work, both immature (group vM) and matured (group Mv) survived vitrification better than the other groups. Degeneration percentages are lower and cleavage rates are higher that those obtained by other authors [15,32,35], although development up to the morula and blastocyst stage is compromised. Such as observed in our work, a low correlation between cleavage and further embryonic development has been previously stated [9,36].…”
Section: Discussioncontrasting
confidence: 66%
“…Men et al [16] detected DNA fragmentation without alteration of the oocyte morphology as a direct consequence of cryopreservation, being unknown the mechanisms underlying this damage. The osmotic stress during dehydration and rehydration may also account for cryodamage [32]. To overcome extreme sensitivity to chilling temperatures, vitrification replaced classical freezing which results in increased morphological damage to oocytes at any maturation stage [33] and reduced embryonic development compared to vitrified oocytes [34].…”
Section: Discussionmentioning
confidence: 99%
“…Immature oocytes seem to be less prone to damages caused by the chilling (at the nuclear level), freezing, and thawing procedures, and they, too, can be cryopreserved by controlledrate freezing or vitrification (Arav et al, 1993). Preantral oocytes can be preserved inside the follicle, and about 10% seem to be physiologically active after thawing and 1 week of culture (Nayudu et al, 2003).…”
Section: Effect Of Meiotic Stagementioning
confidence: 99%
“…Ayrıca, hücrede donma/çözünme esnasında gelişen lipit peroksidasyonunu azaltmaya çalışırlar. Sulandırıcıya ilavelerinde düşük oranda permeabl kryoprotektan kullanılmakta, bu işlem internal kryoprotektanların olası toksik etkilerini azaltmaktadır (4,6). Eksternal kryoprotektanlar, makromoleküller ve sakkaritler olarak ikiye ayrılır.…”
Section: Permeabl (Eksternal) Kryoprotektanlarunclassified