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The SPOM-adapted IVM system improves in vitro production of bovine embryos
Theriogenology ( IF 2.4 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.theriogenology.2020.09.024
Gabriela Ramos Leal 1 , Maria Alice Guimarães Graciosa 2 , Clara Ana Santos Monteiro 1 , Renata Pasolini 2 , Agostinho Jorge Dos Reis Camargo 2 , Clara Slade Oliveira 3 , Carlos Otávio de Paula Vasconcelos 1 , Luiz Altamiro Garcia Nogueira 1 , Ana Maria Reis Ferreira 1 , Raquel Varella Serapião 4
Affiliation  

This study aimed to test the effects of an IVM SPOM adaptation (SPOM-adapted IVM) on the production, total number of cells (TNC), apoptosis, and cryotolerance (post-warming survival and cytoskeleton actin integrity) of bovine IVP embryos. Two experiments were conducted with two experimental groups based on IVM treatment: A control group (TCM 199 without FCS) and an SPOM-adapted group (TCM 199 with forskolin and IBMX in pre-IVM and IVM with cilostamide). The first experiment evaluated embryo in vitro production, TNC, and apoptosis rate on D9 of development. In the second experiment, embryos were vitrified/warmed at D7 (control fresh and vitrified; SPOM-adapted fresh and vitrified) and assessed regarding post-warming survival rates and cytoskeleton actin integrity. Statistical analysis was performed using GraphPad INSTAT software at a significance level of 5%. An increase (p < 0.05) in blastocyst production was observed in the SPOM-adapted group comparing to the control group. There was no difference (p > 0.05) in the TNC or apoptosis rate between the groups. Regarding cryopreservation, no differences were found (p > 0.05) in actin integrity or post-warming survival rates between the vitrified groups. In both vitrified groups, we observed a significantly lower uninjured pattern of actin integrity compared to the fresh groups (p < 0.05). We conclude that the SPOM-adapted IVM system is beneficial for blastocyst production and does not affect the quality and cryotolerance of the produced embryos.

中文翻译:

适应 SPOM 的 IVM 系统提高了牛胚胎的体外生产

本研究旨在测试 IVM SPOM 适应(SPOM 适应的 IVM)对牛 IVP 胚胎的产生、细胞总数 (TNC)、细胞凋亡和冷冻耐受性(升温后存活和细胞骨架肌动蛋白完整性)的影响。对基于 IVM 治疗的两个实验组进行了两个实验:对照组(不含 FCS 的 TCM 199)和 SPOM 适应组(TCM 199 与 forskolin 和 IBMX 在 IVM 前和 IVM 与西洛他胺)。第一个实验评估了胚胎体外产生、TNC 和发育 D9 的细胞凋亡率。在第二个实验中,胚胎在 D7 时被玻璃化/加热(对照新鲜和玻璃化;SPOM 适应新鲜和玻璃化),并评估加热后的存活率和细胞骨架肌动蛋白的完整性。使用 GraphPad INSTAT 软件以 5% 的显着性水平进行统计分析。与对照组相比,在 SPOM 适应组中观察到囊胚产量增加(p < 0.05)。各组之间的 TNC 或细胞凋亡率没有差异 (p > 0.05)。关于冷冻保存,玻璃化组之间的肌动蛋白完整性或升温后存活率没有差异(p > 0.05)。在两个玻璃化组中,我们观察到与新鲜组相比,未受伤的肌动蛋白完整性模式显着降低(p < 0.05)。我们得出的结论是,SPOM 适应的 IVM 系统有利于囊胚的产生,并且不会影响所产生胚胎的质量和耐低温性。05) 与对照组相比,在 SPOM 适应组中观察到囊胚产生。各组之间的 TNC 或细胞凋亡率没有差异 (p > 0.05)。关于冷冻保存,玻璃化组之间的肌动蛋白完整性或升温后存活率没有差异(p > 0.05)。在两个玻璃化组中,我们观察到与新鲜组相比,未受伤的肌动蛋白完整性模式显着降低(p < 0.05)。我们得出的结论是,SPOM 适应的 IVM 系统有利于囊胚的产生,并且不会影响所产生胚胎的质量和耐低温性。05) 与对照组相比,在 SPOM 适应组中观察到囊胚产生。各组之间的 TNC 或细胞凋亡率没有差异 (p > 0.05)。关于冷冻保存,玻璃化组之间的肌动蛋白完整性或升温后存活率没有差异(p > 0.05)。在两个玻璃化组中,我们观察到与新鲜组相比,未受伤的肌动蛋白完整性模式显着降低(p < 0.05)。我们得出的结论是,SPOM 适应的 IVM 系统有利于囊胚的产生,并且不会影响所产生胚胎的质量和耐低温性。05) 玻璃化组之间的肌动蛋白完整性或升温后存活率。在两个玻璃化组中,我们观察到与新鲜组相比,未受伤的肌动蛋白完整性模式显着降低(p < 0.05)。我们得出的结论是,SPOM 适应的 IVM 系统有利于囊胚的产生,并且不会影响所产生胚胎的质量和耐低温性。05) 玻璃化组之间的肌动蛋白完整性或升温后存活率。在两个玻璃化组中,我们观察到与新鲜组相比,未受伤的肌动蛋白完整性模式显着降低(p < 0.05)。我们得出的结论是,SPOM 适应的 IVM 系统有利于囊胚的产生,并且不会影响所产生胚胎的质量和耐低温性。
更新日期:2020-12-01
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