An association between assisted reproductive technology （ART） and neurobehavioral imprinting disorders has been reported in many studies, and it seems that ART may interfere with imprint reprogramming. However, it h...An association between assisted reproductive technology （ART） and neurobehavioral imprinting disorders has been reported in many studies, and it seems that ART may interfere with imprint reprogramming. However, it has never been explored whether epigenetic erros or imprinting disease susceptibility induced by ART can be inherited transgenerationally. Hence, the aim of this study was to determine the effect of in vitro fertilization and embryo transfer （IVF-ET） on transgenerational inheritance in am inbred mouse model. Mice derived from IVF-ET were outcrossed to wild-type C57BL/6J to obtain their female and male line F2 and F3 generations. Their behavior, morphology, histology, and DNA methylation status at several important differentially methylated regions （DMRs） were analyzed by Morris water maze, hematoxylin and eosin （H＆E） staining, and bisulfite genomic sequencing. No significant differences in spatial learning or phenotypic abnormality were found in adults derived from IVF （F1） and female and male line F2 and F3 generations. A borderline trend of hypomethylation was found in H19 DMR CpG island 3 in the female line-derived F3 generation （0.40±0.118, P=0.086）. Methylation status in H19/Igf2 DMR island 1, Igf2 DMR, KvDMR, and Snrpn DMR displayed normal patterns. Methylation percentage did not differ significantly from that of adults conceived naturally, and the expression of the genes they regulated was not disturbed. Transgenerational integrity, such as behavior, morphology, histology, and DNA methylation status, was maintained in these generations, which indicates that exposure of female germ cells to hormonel stimulation and gamete manipulation might not affect the individuals and their descendents.展开更多
目的:探讨安宫黄体酮(MPA)降调在40岁以上高龄妇女体外受精中的应用价值。方法:回顾分析2014年6月2015年12月在解放军第105医院生殖中心实施体外受精/卵胞质内单精子显微授精(IVF/ICSI)治疗的40岁以上女性患者的临床资料,其中69例采用MP...目的:探讨安宫黄体酮(MPA)降调在40岁以上高龄妇女体外受精中的应用价值。方法:回顾分析2014年6月2015年12月在解放军第105医院生殖中心实施体外受精/卵胞质内单精子显微授精(IVF/ICSI)治疗的40岁以上女性患者的临床资料,其中69例采用MPA垂体降调节(A组),126例采用GnRH-a短方案者(B组),并对A组中36例(A1组)前一周期采用其他促排方案因无可移植胚胎或胚胎移植后未孕者(A2组)进行自身对照观察,比较两组及A组自身对照的促排卵及IVF结局。结果:A组与B组的Gn用量和天数、HCG日≥14mm卵泡数、HCG日E2及LH水平、获卵数、成熟卵率、受精率、卵裂率、优质胚胎率、可利用胚胎数、取卵周期取消率、无可利用胚胎周期取消率均无统计学差异(P>0.05);A组出现早发LH峰比例为4.35%,显著低于B组(15.87%)(P<0.05)。A1组的成熟卵率及优质胚胎率(84.17%vs 68.82%)均显著高于A2组(71.03 vs 44.78%)(P<0.05),早发LH峰率则显著低于A2组(0 vs 33.33%)(P<0.05)。结论:MPA降调节能有效降低40岁以上女性超促排卵过程中早发LH峰发生率,获得更多的成熟卵数及优质胚胎,为高龄患者提供了一个简便、经济、高效,患者依从性好的垂体降调方案。展开更多
基金supported by the National Basic Research Program (973) of China (No. 2007CB948104)the National Natural Science Foundation of China (No. 81070532)the Zhejiang Provincial Natural Science Foundation of China (No. Z207021)
文摘An association between assisted reproductive technology （ART） and neurobehavioral imprinting disorders has been reported in many studies, and it seems that ART may interfere with imprint reprogramming. However, it has never been explored whether epigenetic erros or imprinting disease susceptibility induced by ART can be inherited transgenerationally. Hence, the aim of this study was to determine the effect of in vitro fertilization and embryo transfer （IVF-ET） on transgenerational inheritance in am inbred mouse model. Mice derived from IVF-ET were outcrossed to wild-type C57BL/6J to obtain their female and male line F2 and F3 generations. Their behavior, morphology, histology, and DNA methylation status at several important differentially methylated regions （DMRs） were analyzed by Morris water maze, hematoxylin and eosin （H＆E） staining, and bisulfite genomic sequencing. No significant differences in spatial learning or phenotypic abnormality were found in adults derived from IVF （F1） and female and male line F2 and F3 generations. A borderline trend of hypomethylation was found in H19 DMR CpG island 3 in the female line-derived F3 generation （0.40±0.118, P=0.086）. Methylation status in H19/Igf2 DMR island 1, Igf2 DMR, KvDMR, and Snrpn DMR displayed normal patterns. Methylation percentage did not differ significantly from that of adults conceived naturally, and the expression of the genes they regulated was not disturbed. Transgenerational integrity, such as behavior, morphology, histology, and DNA methylation status, was maintained in these generations, which indicates that exposure of female germ cells to hormonel stimulation and gamete manipulation might not affect the individuals and their descendents.
文摘目的:探讨安宫黄体酮(MPA)降调在40岁以上高龄妇女体外受精中的应用价值。方法:回顾分析2014年6月2015年12月在解放军第105医院生殖中心实施体外受精/卵胞质内单精子显微授精(IVF/ICSI)治疗的40岁以上女性患者的临床资料,其中69例采用MPA垂体降调节(A组),126例采用GnRH-a短方案者(B组),并对A组中36例(A1组)前一周期采用其他促排方案因无可移植胚胎或胚胎移植后未孕者(A2组)进行自身对照观察,比较两组及A组自身对照的促排卵及IVF结局。结果:A组与B组的Gn用量和天数、HCG日≥14mm卵泡数、HCG日E2及LH水平、获卵数、成熟卵率、受精率、卵裂率、优质胚胎率、可利用胚胎数、取卵周期取消率、无可利用胚胎周期取消率均无统计学差异(P>0.05);A组出现早发LH峰比例为4.35%,显著低于B组(15.87%)(P<0.05)。A1组的成熟卵率及优质胚胎率(84.17%vs 68.82%)均显著高于A2组(71.03 vs 44.78%)(P<0.05),早发LH峰率则显著低于A2组(0 vs 33.33%)(P<0.05)。结论:MPA降调节能有效降低40岁以上女性超促排卵过程中早发LH峰发生率,获得更多的成熟卵数及优质胚胎,为高龄患者提供了一个简便、经济、高效,患者依从性好的垂体降调方案。
