Objective:To detect common chromosomal aneuploidy variations in embryos from couples undergoing assisted reproductive technology and preimplantation genetic screening and their possible associations with embryo qualit...Objective:To detect common chromosomal aneuploidy variations in embryos from couples undergoing assisted reproductive technology and preimplantation genetic screening and their possible associations with embryo quality.Methods:In this study,359 embryos from 62 couples were screened for chromosomes 13,21,18,X,and Y by fluorescence insitu hybridization.For biopsy of blastomere,a laser was used to remove a significantly smaller portion of the zona pellucida.One blastomere was gently biopsied by an aspiration pipette through the hole.After biopsy,the embryo was immediately returned to the embryo scope until transfer.Embryo integrity and blastocyst formation were assessed on day 5.Results:Totally,282 embryos from 62 couples were evaluated.The chromosomes were normal in 199(70.57%)embryos and abnormal in 83(29.43%)embryos.There was no significant association between the quality of embryos and numerical chromosomal abnormality(P=0.67).Conclusions:Embryo quality is not significantly correlated with its genetic status.Hence,the quality of embryos determined by morphological parameters is not an appropriate method for choosing embryos without these abnormalities.展开更多
目的探讨染色体多态性变异是否可以作为胚胎植入前非整倍体检测(preimplantation genetic testing for aneuploidies,PGT-A)的指征。方法回顾性队列研究分析于郑州大学第一附属医院生殖医学中心2012年1月1日至2021年12月31日期间接受PG...目的探讨染色体多态性变异是否可以作为胚胎植入前非整倍体检测(preimplantation genetic testing for aneuploidies,PGT-A)的指征。方法回顾性队列研究分析于郑州大学第一附属医院生殖医学中心2012年1月1日至2021年12月31日期间接受PGT-A解冻移植和体外受精-胚胎移植(in vitro fertilization and embryo transfer,IVF-ET)新鲜移植助孕患者的临床资料。根据夫妇染色体核型,PGT-A周期分为女方染色体多态性变异(女方多态组)、男方染色体多态性变异(男方多态组)及双方染色体多态性变异(双方多态组),同期染色体正常夫妇为对照(染色体正常组);IVF周期分为女方染色体多态性变异(女方多态组)、男方染色体多态性变异(男方多态组),同期染色体正常夫妇为对照(染色体正常组);比较组间实验室结果和妊娠结局。结果PGT-A周期中,各组间活检胚胎染色体非整倍体率、解冻移植临床妊娠率、早期流产率、活产率差异均无统计学意义(均P>0.05)。IVF新鲜胚胎移植中,各组间临床妊娠率、早期流产率、活产率差异均无统计学意义(均P>0.05)。IVF助孕后早期流产患者中,女方多态组、男方多态组和染色体正常组流产组织拷贝数变异(copy number variation,CNV)检测异常率分别为26.67%(4/15)、57.89%(11/19)、64.59%(363/562),差异有统计学意义(P=0.010)。结论夫妇染色体多态性变异不影响胚胎非整倍体,同时不影响PGT-A周期和IVF新鲜移植周期妊娠结局,且不增加流产组织染色体异常率。目前无明确证据支持染色体多态性变异可作为PGT-A新指征。展开更多
文摘Objective:To detect common chromosomal aneuploidy variations in embryos from couples undergoing assisted reproductive technology and preimplantation genetic screening and their possible associations with embryo quality.Methods:In this study,359 embryos from 62 couples were screened for chromosomes 13,21,18,X,and Y by fluorescence insitu hybridization.For biopsy of blastomere,a laser was used to remove a significantly smaller portion of the zona pellucida.One blastomere was gently biopsied by an aspiration pipette through the hole.After biopsy,the embryo was immediately returned to the embryo scope until transfer.Embryo integrity and blastocyst formation were assessed on day 5.Results:Totally,282 embryos from 62 couples were evaluated.The chromosomes were normal in 199(70.57%)embryos and abnormal in 83(29.43%)embryos.There was no significant association between the quality of embryos and numerical chromosomal abnormality(P=0.67).Conclusions:Embryo quality is not significantly correlated with its genetic status.Hence,the quality of embryos determined by morphological parameters is not an appropriate method for choosing embryos without these abnormalities.
文摘目的探讨染色体多态性变异是否可以作为胚胎植入前非整倍体检测(preimplantation genetic testing for aneuploidies,PGT-A)的指征。方法回顾性队列研究分析于郑州大学第一附属医院生殖医学中心2012年1月1日至2021年12月31日期间接受PGT-A解冻移植和体外受精-胚胎移植(in vitro fertilization and embryo transfer,IVF-ET)新鲜移植助孕患者的临床资料。根据夫妇染色体核型,PGT-A周期分为女方染色体多态性变异(女方多态组)、男方染色体多态性变异(男方多态组)及双方染色体多态性变异(双方多态组),同期染色体正常夫妇为对照(染色体正常组);IVF周期分为女方染色体多态性变异(女方多态组)、男方染色体多态性变异(男方多态组),同期染色体正常夫妇为对照(染色体正常组);比较组间实验室结果和妊娠结局。结果PGT-A周期中,各组间活检胚胎染色体非整倍体率、解冻移植临床妊娠率、早期流产率、活产率差异均无统计学意义(均P>0.05)。IVF新鲜胚胎移植中,各组间临床妊娠率、早期流产率、活产率差异均无统计学意义(均P>0.05)。IVF助孕后早期流产患者中,女方多态组、男方多态组和染色体正常组流产组织拷贝数变异(copy number variation,CNV)检测异常率分别为26.67%(4/15)、57.89%(11/19)、64.59%(363/562),差异有统计学意义(P=0.010)。结论夫妇染色体多态性变异不影响胚胎非整倍体,同时不影响PGT-A周期和IVF新鲜移植周期妊娠结局,且不增加流产组织染色体异常率。目前无明确证据支持染色体多态性变异可作为PGT-A新指征。