2023
DOI: 10.1016/j.theriogenology.2022.11.027
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Microenvironment factors promoting the quality of vitrified cat oocytes

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Cited by 4 publications
(3 citation statements)
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“…Our study showed a higher number of presumptive zygotes with a thin zona pellucida that reached the blastocyst stage and started the hatching process. Zona pellucida hardening is a process during which cortical granules are released to prevent polyspermy (Dietzel et al, 2017;Colombo et al, 2023). However, it happens that this process occurs spontaneously already at the IVM stage, often due to inappropriate IVM conditions.…”
Section: Discussionmentioning
confidence: 99%
“…Our study showed a higher number of presumptive zygotes with a thin zona pellucida that reached the blastocyst stage and started the hatching process. Zona pellucida hardening is a process during which cortical granules are released to prevent polyspermy (Dietzel et al, 2017;Colombo et al, 2023). However, it happens that this process occurs spontaneously already at the IVM stage, often due to inappropriate IVM conditions.…”
Section: Discussionmentioning
confidence: 99%
“…This event leads to an electro-metabolic uncoupling of the COC as the cation acts by activating the oocytes during the fertilization process [169]. Consequently, this could also influence the mitochondrial biogenesis of COC, essential for oocyte maturation and downstream events such as fertilization and intracytoplasmic sperm injection (ICSI) [169][170][171].…”
Section: Clinical Significance Of Electro-metabolic Coupling Of Cocmentioning
confidence: 99%
“…Immature oocytes are usually cryopreserved as cumulus-oocyte complexes (COCs) because cumulus cells (CCs) are crucial for oocyte meiotic resumption and developmental competence [11]. However, IVM is challenging for cryopreserved immature COCs due to membrane damage to CCs [12] and their physical/functional detachment from the oocyte, caused by transzonal projections' sensitivity to cryoprotectants and low temperatures [12,13]. In the last 20 years, the vitrification/warming of immature COCs from adult subjects has been applied to several domestic large (sheep [12,[14][15][16][17][18][19][20][21][22], cow [23][24][25][26][27], buffalo [28][29][30], goat [31], pig [32][33][34][35], horse [36][37][38][39][40][41], donkey [42]) and small (cat [43][44][45][46][47][48], dog [49]) animal species, with various results, depending on intrinsic species-specific oocyte features.…”
Section: Introductionmentioning
confidence: 99%