卵母细胞滑面内质网聚集对卵胞浆内单精子显微注射周期妊娠和新生儿结局的影响

目的:探讨在卵胞浆内单精子显微注射(ICSI)周期中,卵母细胞滑面内质网聚集(SERa)对胚胎发育情况、妊娠结局和新生儿结局的影响。方法:回顾性分析2015年1月至2020年12月的ICSI周期,根据纳入和排除标准,共纳入SERa阳性(SERa+)周期组(至少有1个卵母细胞有SERa+)291例,与同时期的1302例SERa阴性(SERa-)周期(所有卵母细胞均无SERa)作为对照组进行比较。分析两组患者的体外受精-胚胎移植(IVF-ET)实验室指标、临床结局以及新生儿情况,包括MⅡ卵母细胞率、受精率、卵裂率、临床妊娠率、种植率、流产率、活产率以及围产期并发症等。结果:(1)两组患者的年龄、不孕年限、不孕类型、体质量指数(BMI)、卵泡刺激素(FSH)、窦卵泡数(AFC)、促排方案、促性腺激素(Gn)天数、Gn剂量以及获卵数比较,差异无统计学意义(P>0.05);(2)与SERa-周期组相比,SERa+周期组的MⅡ卵母细胞率以及囊胚形成率显著增加(P<0.05);(3)与SERa-周期组相比,SERa+周期组的活产率显著降低(P<0.05),流产率显著增加(P<0.05);(4)两组患者的受精、卵裂、临床妊娠、种植率和围产期并发症比较,差异无统计学意义(P>0.05)。结论:SERa的存在对ICSI周期的胚胎发育和妊娠结局有负面影响,但仍然有一定的发育潜能和利用价值。建议胚胎学家对SERa+卵子仍应考虑加以利用,但在临床上优先考虑来自SERa-卵母细胞的胚胎用于SERa+周期的移植。     

精子活动力对卵胞浆内单精子注射结局的影响

目的:探讨精子活动力与ICSI结局的关系。方法:对2001.12-2005.04在本中心完成ICSI治疗的139个周期进行分析。根据卵母细胞形态特征对928个MⅡ期卵进行分级(Ⅰ级、Ⅱ级和Ⅲ级),并分别用可获得的精子行显微穿刺。结果:用A级、B级和C级精子穿刺各级别的MⅡ期卵母细胞后,受精率在三者间无显著性差异,但高于D级精子行ICSI(P<0.05)。用A、B、C或D级精子行穿刺后一旦使卵受精,卵裂率无明显差异。卵母细胞为Ⅰ级或Ⅱ级时,用A级、B级和C级精子穿刺后,优质胚胎率在三者间无显著性差异,但高于D级精子行ICSI;卵母细胞为Ⅲ级时,用A、B级精子行ICSI后,优质胚胎率高于C、D级精子行ICSI(P<0.05)。结论:精子活动力不影响ICSI后卵裂率;不活动精子行ICSI后受精率和优质胚胎率,总体上较活动精子低。卵母细胞质量较差时,活动精子的活动力等级对优质率胚胎有一定影响。     

卵母细胞滑面内质网聚集对早期胚胎及妊娠结局的影响

目的:研究卵胞浆内精子注射(ICSI)周期卵母细胞滑面内质网(sER)聚集对早期胚胎体外发育及妊娠结局的影响并分析其原因。方法:99例患者ICSI治疗107个周期,于HCG日测定血清激素E2、P、LH浓度以及子宫内膜厚度。根据所获MⅡ期卵母细胞是否出现sER聚集分为A、B两组,A组为所获MⅡ期卵母细胞均未出现sER聚集周期共90例;B组为有至少一枚MⅡ期卵母细胞出现sER聚集周期,共17例。比较A、B两组HCG日E2、P、LH水平、子宫内膜厚度,及治疗周期数、年龄、病程、Gn总量、Gn天数、获卵数、受精率、可用胚胎率、优质胚胎率、移植胚胎数、周期临床妊娠率、种植率、流产率和原发、继发不孕患者比例的差异。并且对比B组sER聚集阳性[sER(+)]与sER聚集阴性[sER(-)]卵母细胞的受精率、可用胚胎率和优质胚胎率。结果:B组HCG日E2水平明显高于A组(P<0.05,3141.18±604.47 vs 2635.12±825.46),而两组间P和LH水平以及子宫内膜厚度均无显著差异(P>0.05)。B组优质胚胎率显著低于A组(P<0.05,47.83%vs 57.67%),而B组Gn天数(P<0.01,13.35±1.66 vs 11.83±2.4)和流产率(P<0.05,100%vs 17.86%)均明显高于A组,两组在年龄、治疗周期数、病程、Gn总量、获卵数、受精率、可用胚胎率、移植胚胎数、临床妊娠率、种植率以及原发、继发不孕患者比例等各方面均无显著差异(P>0.05)。B组sER(+)卵母细胞的优质胚胎率显著低于sER-卵母细胞(P<0.01,20.69%vs 52.9%),而受精率和可用胚胎率无显著性差异(P>0.05)。结论:ICSI周期卵母细胞sER聚集对早期胚胎体外发育及妊娠结局均有不良影响,sER聚集可能与HCG日高E2水平及长时间Gn刺激有关。     

精子活动力对卯胞浆内单精子注射结局的影响

目的：探讨精子活动力与ICSI结局的关系。方法：对2001．12—2005．04在本中心完成ICSI治疗的139个周期进行分析。根据卵母细胞形态特征对928个MⅡ期卵进行分级（Ⅰ级、Ⅱ级和Ⅲ级），并分别用可获得的精子行显微穿刺。结果：用A级、B级和C级精子穿刺各级别的MⅡ期卵母细胞后，受精率在三者间无显著性差异，但高于D级精子行ICSI（P〈0．05）。用A、B、C或D级精子行穿刺后一旦使卵受精，卵裂率无明显差异。卵母细胞为Ⅰ级或Ⅱ级时。用A级，B级和C级精子穿刺后，优质胚胎率在三者间无显著性差异，但高于D级精子行ICSI；卵母细胞为Ⅲ时．用A、B级精子行ICSI后，优质胚胎率高于C、D级精子行ICSI（P〈0．05）。结论：精子活动力不影响ICSI后卵裂率；不活动精子行ICSI后受精率和优质胚胎率，总体上较活动精子低。卵母细胞质量较差时，活动精子的活动力等级对优质率胚胎有一定影响。     

Y染色体微缺失对卵胞质内单精子注射胚胎情况和临床结局的影响

目的:探讨Y染色体微缺失对卵胞质内单精子注射(ICSI)胚胎形成情况和临床结局的影响。方法:收集22例Y染色体微缺失患者进行的27个ICSI治疗周期(研究组)的胚胎和临床结局资料,另收集同期88例严重少精子症或无精子症非Y染色体微缺失患者的101个ICSI治疗周期(对照组)的相应资料进行回顾性分析;同时比较不同Y染色体微缺失类型患者进行ICSI的胚胎资料和临床结局。结果:研究组和对照组的受精率分别为84.91%与86.30%,卵裂率分别为95.45%与96.79%,优质胚胎率分别为49.35%与45.03%,新鲜周期移植优质胚胎率分别为80.36%与84.80%,临床妊娠率分别为65.22%与60.40%,胚胎着床率分别为41.07%与33.60%,早期流产率分别为0.00%与4.92%,活产率分别为56.52%与55.45%,男婴比例分别为56.25%与47.83%。各观察指标组间均无统计学差异(P>0.05)。AZFb区部分缺失组2个新鲜胚胎移植周期中有1例获得生化妊娠,但后转阴性;d区部分缺失组及d区和c区部分缺失组各1次新鲜胚胎移植周期且均未获得妊娠;d区部分缺失加c区全部缺失组19个新鲜胚胎移植周期15例获得妊娠且无一例发生流产。结论:Y染色体微缺失对ICSI治疗周期形成的胚胎情况和妊娠结局无显著性影响,但AZFd区部分缺失加c区全部缺失患者配偶临床妊娠机会高于其他类型Y染色体微缺失患者,AZFb区部分缺失病例配偶有妊娠丢失发生。     

卵母细胞分泌因子在人卵丘颗粒细胞中的表达及其与卵母细胞发育潜能的关系

目的:探讨单卵母细胞所对应的卵丘颗粒细胞(cumulus cells,CCs)中生长分化因子-9(GDF-9)、骨形成蛋白-15(BMP-15)、转化生长因子β1(TGFβ1)、Smad3的表达与对应单卵母细胞质量及其发育潜能的关系以及在不同促排卵方案中的表达。方法:因男方因素或曾有过体外受精(IVF)不受精史接受卵胞质内单精子显微注射(ICSI)治疗的患者41例,单卵母细胞的CCs 332份(Gn RH-a组21例172份CCs,非垂体降调节组20例160份CCs)。拣卵后机械法剥离单卵子周围的CCs,将卵母细胞与收集的CCs一一对应进行分析。M_Ⅱ卵均采用ICSI授精,并观察其受精、卵裂及囊胚发育情况。采用Real-time PCR方法检测,比较各组CCs中GDF-9、BMP-15、TGFβ1和Smad3的相对含量。结果:1 CCs收集及PCR扩增产物可满足实验要求。2 Gn RH-a组及非垂体降调节组中,上述4种卵母细胞分泌因子,在正常受精组的相对含量均显著高于异常受精组;优质卵裂胚形成组的相对含量均显著高于非优质卵裂胚形成组;优质囊胚形成组中的相对含量显著高于非优质囊胚形成组。3 Gn RH-a组的CCs中BMP-15的表达量相对更高;而GDF-9、TGFβ1和Smad3在非降调节组的CCs中相对表达量较高。结论:1采用单卵母细胞的CCs的RNA进行研究,实际操作是可行的,RNA的质量和数量可达到实验要求。2 GDF-9、BMP-15、TGFβ1、Smad3可作为评价卵母细胞质量、预测卵母细胞发育潜能的客观指标。3降调节与否可能影响CCs中的卵母细胞分泌因子的表达水平,且与M_Ⅱ期卵母细胞发育潜能有关。     

精子畸形率对卵胞浆内单精子注射(ICSI)临床结局的影响

目的:分析畸形精子行卵胞浆内单精子注射(ICSI)的临床结局。方法:回顾性分析因男性因素行ICSI治疗的239个新鲜取卵周期。根据精子形态学分析结果将研究对象分为:精子形态正常组(A组)、非极重度畸形精子症组(B组)和极重度畸形精子症组(C组),比较3组的受精率、卵裂率、优质胚胎率、胚胎种植率及临床妊娠率、流产率、异位妊娠率和多胎妊娠率。结果:A、B组在受精率、卵裂率、优质胚胎率与C组有统计学差异(分别为80.20%、81.40%和67.60%;94.91%、93.42%和79.91%;63.87%、59.30%和54.29%)(P<0.05);3组的胚胎种植率、临床妊娠率、流产率、异位妊娠率、多胎妊娠率均无统计学差异(分别为26.3%、25.6%和24.2%;42.28%、45.00%和42.86%;7.94%、7.40%和25.00%;4.76%、3.70%和8.33%;31.75%、18.52%和25.00%)(P>0.05);而C组内手术取精(PESA/TESA)亚组的卵裂率低于体外排精亚组,差异有统计学意义(86.72%vs 76.11%,P<0.05)。结论:采用畸形精子行ICSI的不育患者同样可获得理想的临床结局。     

卯母细胞滑面内质网聚集的研究进展

在人类辅助生殖中,经促排卵体外获得的卵母细胞中,有滑面内质网聚集(smooth endoplasmic reticulum aggregate,SERa)形成者占有一定比例.既往研究显示,SERa对胚胎质量及妊娠结局会造成不良影响.但近年来研究显示:SERa卵母细胞可诞生完全健康的新生儿.卵母细胞胞质内SERa的形成可能与遗传因素、卵巢过度刺激、超促排卵方案及扳机日高雌二醇(E2)等多种因素相关.大多数学者认为卵母细胞SERa的形成会导致受精率、卵裂率和囊胚形成率降低及胚胎质量的下降,使得妊娠率显著降低;然而,也有多项报道已证实SERa的卵母细胞的胚胎质量与正常卵母细胞并无差异.因此对于那些临床助孕治疗中获得SERa胚胎或者胚胎数目不足的患者,可考虑移植SERa胚胎.未来,应多关注SERa对体外受精(IVF)结局的影响及着重阐明SERa形成机制,从而从根本上防止异常卵母细胞的出现.     

不同精子来源及授精方式对剩余胚胎继续囊胚培养结局的影响

目的:探讨不同精子来源及不同授精方式对胚胎继续发育能力的影响。方法:分析499例患者499个取卵周期剩余胚胎继续培养形成囊胚的情况,按精子来源不同分为供精IVF(D-IVF)组和夫精IVF(H-IVF)组,按授精方式不同分为IVF组和ICSI组,ICSI组按精子来源分为新鲜精液组、附睾精子和睾丸精子组,比较不同精子来源及授精方式获得剩余胚胎的囊胚形成率、胚胎利用率和无囊胚移植率。结果:① D-IVF组和H-IVF组受精率、卵裂率、优质胚胎率、第3日和第5日胚胎种植率、临床妊娠率和流产率均无统计学差异(P0.05),组间剩余胚胎囊胚形成率、胚胎利用率和无囊胚移植率亦无统计学差异(P0.05);②ICSI组与IVF组比较,其受精率较高(P0.05),但优质胚胎率显著下降,有统计学差异(55.11%vs 61.30%,P0.05),组间第3日卵裂期胚胎和剩余胚胎囊胚种植率、临床妊娠率无统计学差异(P0.05),但ICSI组与IVF组比较,其剩余胚胎囊胚形成率、胚胎利用率稍低,无囊胚移植率较IVF组稍高,差异有统计学意义(56.13%vs 65.32%,48.18%vs 55.39%,21.68%vs 13.20%,P0.05)。③新鲜精液组的优质胚胎率、胚胎利用率显著低于附睾精子和睾丸精子组(P0.05),各组囊胚移植的种植率和临床妊娠率无统计学差异(P0.05)。结论:D-IVF可获得H-IVF相似的结局,其剩余胚胎都有较高的发育潜能,ICSI获得的剩余胚胎发育潜能低于IVF组。附睾精子和睾丸精子ICSI后获得的胚胎比新鲜精液精子ICSI后胚胎发育潜能高。针对不同的授精方式可能需要制定相应的剩余胚胎囊胚培养标准。     

取卵日血清孕酮水平与ICSI周期可用胚胎数及妊娠结局的关系

目的:探讨ICSI周期取卵日血清孕酮水平与可用胚胎数及妊娠结局的关系。方法:对289例超促排卵后经ICSI助孕的患者资料进行回顾性分析。结果:在预测取卵后d3可用胚胎数方面,取卵日血清孕酮水平与注射hCG日E2水平的相对风险度分别为1.83和1.39。使用受试者工作曲线,界定出预测取卵后d3可用胚胎数目<4的取卵日孕酮浓度是11.7ng/ml。取卵日孕酮水平较高的患者获得了更多的可用胚胎且差异显著,但妊娠结局并无差异。结论:取卵日血清孕酮水平与可用胚胎数目相关,但不影响新鲜ICSI周期妊娠结局。     

Embryological outcomes in cycles with human oocytes containing large tubular smooth endoplasmic reticulum clusters after conventional in vitro fertilization

There have been no studies analyzing the effect of large aggregates of tubular smooth endoplasmic reticulum (aSERT) after conventional in vitro fertilization (cIVF). The aim of this study was to investigate whether aSERT can be identified after cIVF and the association between the embryological outcomes of oocytes in cycles with aSERT. This is a retrospective study examining embryological data from cIVF cycles showing the presence of aSERT in oocytes 5–6 h after cIVF. To evaluate embryo quality, cIVF cycles with at least one aSERT-metaphase II (MII) oocyte observed (cycles with aSERT) were compared to cycles with normal-MII oocytes (control cycles). Among the 4098 MII oocytes observed in 579 cycles, aSERT was detected in 100 MII oocytes in 51 cycles (8.8%). The fertilization rate, the rate of embryo development on day 3 and day 5–6 did not significantly differ between cycles with aSERT and control group. However, aSERT-MII oocytes had lower rates for both blastocysts and good quality blastocysts (p?相似文献   

Deliveries of babies with normal health derived from oocytes with smooth endoplasmic reticulum clusters

PurposeTo examine the impact on development of derived embryos from smooth endoplasmic reticulum clusters (SERC) in human metaphase II (MII) oocytes.MethodsRetrospective analysis at Kyono ART Clinic. Comparison of embryological development, pregnancy, live birth and fetal malformation between oocytes with SERC (the SERC(+) group) and those without (the SERC(−) group) in 2,158 patients (3,758 cycles) after ICSI.ResultsFertilization and implantation rate were significantly lower in SERC(+) MII oocytes than in SERC(−) MII oocytes. After the transfer of fresh and vitrified embryos derived from SERC(+) oocytes, 14 pregnancies resulted in 14 healthy babies, including 2 from fresh embryo transfer (ET) and 12 from vitrified-warmed ET, with no malformations.Conclusion(s)The presence of SERC in MII oocytes was associated with significantly lower fertilization rates and implantation rates than seen in SERC(−) MII oocytes within SERC (+) cycles. However, SERC had no impact on post-implantation development as well as neonatal outcome.     

Metaphase II (MII) human oocytes with smooth endoplasmic reticulum clusters do not affect blastocyst euploid rate

ObjectiveTo investigate whether the rate of euploidy and pregnancy outcomes are affected by smooth endoplasmic reticulum clusters (SERc) and other metaphase II human oocyte dysmorphisms.Materials and methodsRetrospective analysis of the morphologies of metaphase II (MII) human oocytes, which had developed into 590 biopsied blastocysts derived from 109 patients that received preimplantation genetic testing for aneuploidies (PGT-A) cycles between March 2013 and December 2017. The euploid rate of blastocysts that originated from morphologically abnormal or normal oocytes were analyzed. The chromosome status of the blastocysts was determined and analyzed by array comparative genomic hybridization (aCGH) or next generation sequencing (NGS) following trophectoderm biopsy.ResultsAccording to the odds ratios obtained for each oocyte morphotype, no statistically significant relationship was found between oocyte dysmorphisms and euploid rate. Specifically, although SERc-positive oocytes had a higher rate of arrest at two pronuclei, or 2 PN (26.7% vs. 19.4%, p > 0.05), the blastocyst formation rate was not affected as compared with SERc-negative oocytes (40.0% vs. 38.6%, p > 0.05). Among nine euploid embryos derived from oocytes with SERc, three single euploid embryo transfers were performed, of which one resulted in blighted ovum, and two resulted in the births of two healthy, singleton term babies.ConclusionThe results presented here suggest that oocyte dysmorphisms do not affect the euploidy rate of the blastocyst. The occurrence of SERc in the oocyte does not seem to impair the developing blastocyst nor does it interfere with good embryo formation rate and euploid rate. Thus, the embryos derived from SERc-positive oocytes could still be considered for embryo transfer if there are no other embryos available.     

Prognosis of oocytes showing aggregation of smooth endoplasmic reticulum

Few cytoplasmic dysmorphisms of oocytes have been reported to negatively influence the further fate of the ova. One such anomaly, namely the central aggregation of the smooth endoplasmic reticulum (SER), has recently been associated with suboptimal outcome in a limited number of patients. In order to increase prognostic value, it was decided to prospectively screen all intracytoplasmic sperm injection patients within 1 year for eggs showing aggregations of SER. In addition, all deliveries (obstetric and neonatal data) were analysed. Occurrence of SER cluster was related to duration (P < 0.001) and dosage (P < 0.01) of the stimulation. Fertilization (58.9%) and blastulation rate (44.0%) were lower (P < 0.01) in affected ova compared with unaffected counterparts (77.4 and 87.8%, respectively). Pregnancies in women with affected gametes were accompanied by a higher incidence of obstetric problems (P < 0.01) leading to a non-significant trend towards earlier delivery and significantly reduced birthweight (P < 0.05). It is strongly recommended to avoid transfer of embryos/blastocysts derived from SER cluster-positive gametes. Patients have to be informed that even transfer of sibling oocytes without this anomaly involves a higher risk of detrimental outcome.     

卵母细胞滑面内质网聚集体与辅助生殖妊娠结局关系的研究进展

在人类辅助生殖中,经促排卵体外获得的卵母细胞中,有滑面内质网聚集体(smooth endoplasmic reticulum clusters,sERC)形成者占有一定比例。这些卵母细胞最终发展为非整倍体的比例较高,影响随后的胚胎发育和妊娠结局。近年来研究显示:卵母细胞胞质内sERC的形成与多种因素相关,主要是Ca2+浓度变化的影响。大多数学者认为卵母细胞sERC的形成会导致受精率、卵裂率和囊胚形成率降低及胚胎质量的下降,使得妊娠率显著降低;然而,也有多项报道已证实含sERC的卵母细胞可以正常受精并获得后代。因此对于那些临床助孕治疗中获得sERC+胚胎或者胚胎数目不足的患者,移植sERC+胚胎或sERC+/sERC-胚胎不失为胚胎移植的一个选择。     

Effect of oocyte morphology on post-warming survival and embryo development in vitrified autologous oocytes

Research question

Does the presence of dysmorphisms affect post-warming survival and embryo development in vitrified autologous oocytes?