Effects of glutathione on oocyte and embryo development in in vitro fertilization

Objective:To evaluate the effect of glutathione(GSH)supplementation in maturation and adaptation media on oocyte development,embryo quality,and oocyte viability after vitrification.Methods:The GSH concentrations were classified into four groups(0,0.5,1.0,and 1.5 mM)which were added to the maturation medium.The maturation process was conducted in vitro for 24 h.Following maturation,oocytes were fertilized with Bali bull semen for 5-6 h and then cultured for 48 h.The morphological quality of ocytes matured with GSH addition and the vitrification method used was evaluated.Parameters assessed included maturation rate,fertilization rate,embryo development,post-vitrification oocyte morphology,and quality of post-vitrification oocytes with GSH added to the adaptation medium.Results:The addition of GSH to the maturation medium significantly improved oocyte quality and embryo development(P<0.05).Specifically,adding 1.5 mM GSH increased the percentage of oocytes reaching metaphase栻from 57.6%without GSH oocytes to 79.0%with 1.5 mM GSH,two-pronuclei fertilization from 47.0%to 72.7%,embryo development from 37.1%to 57.2%,morula formation from 14.6%to 33.7%,and blastocyst formation from 8.1%to 23.8%.Additionally,the survival rate of oocytes post-vitrification increased to 75%with GSH supplementation.Conclusions:The addition of 0.5-1.5 mM of GSH to the maturation and adaptation media significantly enhanced the metaphase栻stage,fertilization rates,cleavage rates,and the survival of oocytes after vitrification.Among the concentrations of 1.5 mM was the most effective in increasing oocyte development and maintaining oocytes viability post-vitrification.

Agronomic treatments combined with embryo rescue for rapid generation advancement in tomato speed breeding

Unlike other major crops,little research has been performed on tomato to reduce the generation time for speed breeding.We evaluated several agronomic treatments to reduce the generation time of tomato in the‘M82'(determinate)and‘Moneymaker'(indeterminate)varieties and evaluated the best combination in conjunction with embryo rescue.Five container sizes with volumes of 0.2 L(XS),0.45 L(S),0.8 L(M),1.3 L(L),and6 L(XL),were evaluated in the first experiment under the autumn cycle.We found that plants grown in XL containers exhibited better development and required less time from sowing to anthesis(DSA)and from anthesis to fruit ripening(DAR).In the second experiment,using XL containers in the autumn-winter cycle,we evaluated the effects of cold priming at the cotyledonary stage,water stress,P supplementation,and K supplementation on generation time.Compared to the control,we found that cold priming significantly reduced the number of leaves,plant height to first the inflorescence,and DSA(2.7 d),whereas K supplementation reduced the DAR(8.8 d).In contrast,water stress and P supplementation did not significantly affect any of the measured traits like DAR,DSA or fruit set.To validate these data,in a third experiment with XL containers in the spring-summer cycle,the combination of cold priming and K supplementation was tested,confirming the significant effect of this combination on the reduction of generation time(2.9 d for DSA and 3.9 d for DAR)compared to the control.Embryo rescue during the cell expansion cycle(average of 22.0 d and 23.3 d after anthesis for‘M82'and‘Moneymaker',respectively)allowed the shortening of the generation time by 8.7 d in‘M82'and 11.6 d in‘Moneymaker'compared to the in planta fruit ripening.The combination of agronomic treatments with embryo rescue can effectively increase the number of generations per year from three to four for speed breeding of tomato.

Embryo Transfer Strategies for Women with Recurrent Implantation Failure During the Frozen-thawed Embryo Transfer Cycles:Sequential Embryo Transfer or Double-blastocyst Transfer?

Objective Both sequential embryo transfer(SeET)and double-blastocyst transfer(DBT)can serve as embryo transfer strategies for women with recurrent implantation failure(RIF).This study aims to compare the effects of SeET and DBT on pregnancy outcomes.Methods Totally,261 frozen-thawed embryo transfer cycles of 243 RIF women were included in this multicenter retrospective analysis.According to different embryo quality and transfer strategies,they were divided into four groups:group A,good-quality SeET(GQ-SeET,n=38 cycles);group B,poor-quality or mixed-quality SeET(PQ/MQ-SeET,n=31 cycles);group C,good-quality DBT(GQ-DBT,n=121 cycles);and group D,poor-quality or mixed-quality DBT(PQ/MQ-DBT,n=71 cycles).The main outcome,clinical pregnancy rate,was compared,and the generalized estimating equation(GEE)model was used to correct potential confounders that might impact pregnancy outcomes.Results GQ-DBT achieved a significantly higher clinical pregnancy rate(aOR 2.588,95%CI 1.267–5.284,P=0.009)and live birth rate(aOR 3.082,95%CI 1.482–6.412,P=0.003)than PQ/MQ-DBT.Similarly,the clinical pregnancy rate was significantly higher in GQ-SeET than in PQ/MQ-SeET(aOR 4.047,95%CI 1.218–13.450,P=0.023).The pregnancy outcomes of GQ-SeET were not significantly different from those of GQ-DBT,and the same results were found between PQ/MQ-SeET and PQ/MQ-DBT.Conclusion SeET relative to DBT did not seem to improve pregnancy outcomes for RIF patients if the embryo quality was comparable between the two groups.Better clinical pregnancy outcomes could be obtained by transferring good-quality embryos,no matter whether in SeET or DBT.Embryo quality plays a more important role in pregnancy outcomes for RIF patients.

Clinical validation of the early embryo viability assessment system: Analysis for the blastocyst morphology and pregnancy outcomes

Objective:To determine the relationship between the early embryo viability assessment(EEVA)and blastocyst morphological parameters and pregnancy outcomes.Methods:This retrospective cohort study was conducted on 291 intracytoplasmic sperm injection cycles including 2522 embryos with indications of prolonging embryo culture to the blastocyst stage in the Genea embryo review incubator,and 511 single vitrified-warmed blastocyst transfer cycles from January 2020 to June 2023.The EEVA system produced an EEVA score from E1(best)to E5(worse)for the potential of blastocyst formation.Blastocyst morphology was evaluated.The association between the EEVA score and each type of blastocyst morphology,implantation rate,clinical pregnancy,and ongoing pregnancy were assessed using generalized estimating equations.Results:The inner cell mass A(ICM A),trophectoderm A(TE A),blastocoele expansion degree of 3,4,5,6,7 rates were higher with lower the EEVA score.The adjusted odd ratio(aOR)(E5 vs E1)was 0.3 for ICM A,0.174 for TE A and 0.210 for BL3,4,5,6,7(all P<0.001),suggesting a significant association between lower EEVA scores and improved embryo quality.The implantation,clinical pregnancy,and ongoing pregnancy rate were also higher with lower the EEVA score.The aOR of E5 vs E1 was 0.245 for implantation,0.185 for clinical pregnancy and 0.200 for ongoing pregnancy rate(P<0.001).Conclusions:There were associations between blastocyst morphology,pregnancy outcome and EEVA scores.The good blastocyst morphology and pregnancy outcomes are higher with lower the EEVA score.

Endochondral ossification of hindlimbs in embryonic development of Japanese Quail(Coturnix japonica)

The endochondral ossification of hindlimb is essential to a bird’s ability to stand,walk and fly.Most hindlimb is ossified in the embryos before hatching in precocial birds.However,the molecular mechanisms of hindlimb ossification in birds is still unclear.Therefore,we tried to examine the process of hindlimb ossification and its molecular regulation by using an animal model—Japanese Quail(Coturnix japonica).We selected four critical stages(Embryo Day:E6,E8,E12 and E16) of skeletal development of embryonic quails for hindlimb skeleton staining to show the process of endochondral ossification and to examine the molecular regulation of endochondral osteogenesis by RNA-Seq analysis.The results showed that ossification became increased with embryonic development and most hindlimb was ossified before hatching.RNA-Seq analysis revealed that various signaling pathways were involved with endochondral ossification with thyroid hormone signaling and WNT signaling pathway particularly enriched.Moreover,the expression levels of 42 genes were continuously upregulated and 14 genes were continuously downregulated from E6 to E16.The present study might provide new insights into complex molecular mechanisms in regulation of endochondral ossification.

Embryonic thermal manipulation:a potential strategy to mitigate heat stress in broiler chickens for sustainable poultry production

Due to high environmental temperatures and climate change, heat stress is a severe concern for poultry health and production, increasing the propensity for food insecurity. With climate change causing higher temperatures and erratic weather patterns in recent years, poultry are increasingly vulnerable to this environmental stressor. To mitigate heat stress, nutritional, genetic, and managerial strategies have been implemented with some success. However, these strategies did not adequately and sustainably reduce the heat stress. Therefore, it is crucial to take proactive measures to mitigate the effects of heat stress on poultry, ensuring optimal production and promoting poultry well-being. Embryonic thermal manipulation(TM) involves manipulating the embryonic environment's temperature to enhance broilers' thermotolerance and growth performance. One of the most significant benefits of this approach is its cost-effectiveness and saving time associated with traditional management practices. Given its numerous advantages, embryonic TM is a promising strategy for enhancing broiler production and profitability in the poultry industry. TM increases the standard incubation temperature in the mid or late embryonic stage to induce epigenetic thermal adaption and embryonic metabolism. Therefore, this review aims to summarize the available literature and scientific evidence of the beneficial effect of pre-hatch thermal manipulation on broiler health and performance.

tRNA^(Glu)-derived fragments from embryonic extracellular vesicles modulate bovine embryo hatching

Transfer RNA-derived small RNAs(tsRNAs)have been shown to be involved in early embryo development and repression of endogenous retroelements in embryos and stem cells.However,it is unknown whether tsRNAs also regulate embryo hatching.In this study,we mined the sequencing data of a previous experiment in which we demonstrated that the microRNA(miRNA)cargo of preimplantation embryonic extracellular vesicles(EVs)influences embryo development.We thus profiled the tsRNA cargo of EVs secreted by blastocysts and non-blastocysts.The majority of tsRNAs was identified as tRNA halves originating from the 5'ends of tRNAs.Among the 148 differentially expressed tsRNAs,the 19 nt tRNA fragment(tRF)tDR-14:32-Glu-CTC-1 was found to be significantly up-regulated in EVs derived from non-blastocysts.RT-qPCR assays confirmed its significant up-regulation in non-blastocyst embryos and their conditioned medium compared to the blastocyst group(P<0.05).Inhibition of tDR-14:32-Glu-CTC-1 by supplementing antagomirs to the conditioned medium improved embryo hatching(P<0.05).Transcriptomic analysis of embryos treated with tDR-14:32-Glu-CTC-1 antagomirs further showed differential expression of genes that are associated with embryo hatching and implantation.In summary,tDR-14:32-Glu-CTC-1 is up-regulated in non-blastocyst embryos and their secretions,and inhibition of tDR-14:32-Glu-CTC-1 promotes embryo hatching,while influencing embryo implantation-related genes and pathways.These results indicate that embryonic EVs containing specific tRFs may regulate preimplantation embryo development.

Pre-existing orthorhombic embryos-induced hexagonal-orthorhombic martensitic transformation in MnNiSi_(1-x)(CoNiGe)_x alloy

The thermal-elastic martensitic transformation from high-temperature Ni_(2)In-type hexagonal structure to low-temperature TiNiSi-type orthorhombic structure has been widely studied in MnMX(M=Ni or Co,and X=Ge or Si)alloys.However,the answer to how the orthorhombic martensite nucleates and grows within the hexagonal parent is still unclear.In this work,the hexagonal-orthorhombic martensitic transformation in a Co and Ge co-substituted MnNiSi is investigated.One can find some orthorhombic laths embedded in the hexagonal parent at a temperature above the martensitic transformation start temperature(M_(s)).With the the sample cooing to M_(s),the laths turn broader,indicating that the martensitic transformation starts from these pre-existing orthorhombic laths.Microstructure observation suggests that these pre-existing orthorhombic laths do not originate from the hexagonal-orthorhombic martensitic transformation because of the difference between atomic occupations of doping elements in the hexagonal parent and those in the preexisting orthorhombic laths.The phenomenological crystallographic theory and experimental investigations prove that the pre-existing orthorhombic lath and generated orthorhombic martensite have the same crystallography relationship to the hexagonal parent.Therefore,the orthorhombic martensite can take these pre-existing laths as embryos and grow up.This work implies that the martensitic transformation in MnNiSi_(1-x)(CoNiGe)_(x) alloy is initiated by orthorhombic embryos.

Effect of coenzyme Q10 supplementation on post-vitrification mouse embryo development

Objective:To investigate the effects of coenzyme Q10(CoQ10)supplementation on post-vitrification embryo development and gross morphology.Methods:Balb/c mouse embryos were cultured in potassium simplex optimised medium(KSOM)with varying CoQ10 concentrations[0(control),20,40,and 60μM].The most effective CoQ10 concentration(40μM)was selected for subsequent post-vitrification morphology study.Embryos were randomly divided into four groups:Group A(non-vitrified without CoQ10),Group B(non-vitrified with CoQ10),Group C(vitrified without CoQ10),and Group D(vitrified with CoQ10),followed by vitrification at the 8-cell stage.Survival rates and development until the blastocyst stage were evaluated through morphological examinations using ASEBIR's system,distinguishing normal and abnormal embryos.Results:Supplementation of 40μM CoQ10 significantly increased blastocyst formation(95%)compared to the control group(92%),20μM(62%),and 60μM(56%)(P<0.001).Following vitrification,Group D exhibited a significant increase in blastocyst formation(92%)compared to Group C(82%)(P<0.05).Morphological assessments indicated superior embryo quality in Group B over Group D during the cleavage stage,morula,and blastocyst(P<0.05).Conclusions:CoQ10 supplementation exhibits promising potential to enhance preimplantation embryo development,increase blastocyst formation rates,and improve embryo quality post-vitrification.This offers a promising approach to mitigate oxidative stress on embryos,potentially improving overall assisted reproductive technology outcomes.

A New Micropropagation Technology of Tilia amurensis:In VitroMicropropagation of Mature Zygotic Embryos and the Establishment of a PlantRegeneration System

Tilia amurensis is an economically valuable broadleaf tree species in Northeast China.The production of highqualityT.amurensis varieties at commercial scales has been greatly limited by the low germination rates.Thereis thus a pressing need to develop an organogenesis protocol for in vitro propagation of T.amurensis to alleviate ashortage of high-quality T.amurensis seedlings.Here,we established a rapid in vitro propagation system forT.amurensis from mature zygotic embryos and analyzed the effects of plant growth regulators and culture mediain different stages.We found that Woody plant medium(WPM)was the optimal primary culture medium formature zygotic embryos.The highest callus induction percentage(68.76%)and number of axillary buds induced(3.2)were obtained in WPM+0.89μmol/L 6-benzyladenine(6-BA)+0.46μmol/L kinetin(KT)+0.25μmol/Lindole-3-butryic acid(IBA)+1.44μmol/L gibberellin A_(3)(GA_(3)).The multiple shoot bud development achievedthe highest percentage(83.32%)in the Murashige and Skoog(MS)+2.22μmol/L 6-BA+0.25μmol/L IBA+1.44μmol/L GA_(3).The rooting percentage(96.70%)was highest in 1/2 MS medium+1.48μmol/L IBA.Thesurvival percentage of transplanting plantlets was 82.22%in soil:vermiculite:perlite(5:3:1).Our study is the firstto establish an effective organogenesis protocol for T.amurensis using mature zygotic embryos.

Enhancement of porcine in vitro embryonic development through luteolin‑mediated activation of the Nrf2/Keap1 signaling pathway

Background Oxidative stress,caused by an imbalance in the production and elimination of intracellular reactive oxygen species(ROS),has been recognized for its detrimental effects on mammalian embryonic development.Luteolin(Lut)has been documented for its protective effects against oxidative stress in various studies.However,its specific role in embryonic development remains unexplored.This study aims to investigate the influence of Lut on porcine embryonic development and to elucidate the underlying mechanism.Results After undergoing parthenogenetic activation(PA)or in vitro fertilization,embryos supplemented with 0.5μmol/L Lut displayed a significant enhancement in cleavage and blastocyst formation rates,with an increase in total cell numbers and a decrease in the apoptosis rate compared to the control.Measurements on D2 and D6 revealed that embryos with Lut supplementation had lower ROS levels and higher glutathione levels compared to the control.Moreover,Lut supplementation significantly augmented mitochondrial content and membrane potential.Intriguingly,activation of the Nrf2/Keap1 signaling pathway was observed in embryos supplemented with Lut,leading to the upregulation of antioxidant-related gene transcription levels.To further validate the relationship between the Nrf2/Keap1 signaling pathway and effects of Lut in porcine embryonic development,we cultured PA embryos in a medium supplemented with brusatol,with or without the inclusion of Lut.The positive effects of Lut on developmental competence were negated by brusatol treatment.Conclusions Our findings indicate that Lut-mediated activation of the Nrf2/Keap1 signaling pathway contributes to the enhanced production of porcine embryos with high developmental competence,and offers insight into the mechanisms regulating early embryonic development.

新鲜周期卵裂期胚胎移植日子宫内膜厚度对单胎妊娠母儿妊娠结局的影响

目的探讨新鲜周期卵裂期胚胎移植日子宫内膜厚度对单胎妊娠母儿妊娠结局的远期影响。方法回顾性分析2016年1月至2022年3月同济大学附属第一妇婴保健院生殖医学中心的1845例单胎妊娠者,根据移植日内膜厚度分为3组:A组≤8 mm,B组>8~14 mm,C组≥14 mm。主要观察指标:早产、出生体重及出生体重z-score、小于胎龄儿、大于胎龄儿、极低出生体重儿、低出生体重儿及巨大儿比率;次要观察指标:妊娠期及分娩期并发症发生率。Logistic回归分析评估移植日子宫内膜厚度与新生儿不良结局的相关性。结果A组异位妊娠发生率显著增加。3组间新生儿出生体重及出生体重z-score值、早产、小于胎龄儿、大于胎龄儿、低出生体重儿、极低出生体重儿及巨大儿比率差异无统计学意义。Logistic回归分析示A组及C组新生儿不良结局与B组相比,无论校正前还是校正后差异均无统计学意义。结论新鲜周期卵裂期胚胎移植日薄型子宫内膜异位妊娠发生率增加,但不增加新生儿不良结局。

红松体细胞胚发生研究进展与展望

本文综述了外植体、培养基、基因型、环境因素4个方面对红松体细胞胚发生影响的研究进展,指出了亟待解决的问题,并对未来的研究发展进行了展望。

玛瑙红樱桃不同发育时期胚败育果实转录组分析

【目的】探明玛瑙红樱桃胚败育果实发育过程中相关基因的表达差异,为筛选胚败育相关基因提供理论依据。【方法】采用Illumina高通量测序技术,对不同发育时期(膨大期、转色期、成熟期)的玛瑙红樱桃胚败育果实样品进行转录组测序及相关分析。【结果】所有玛瑙红樱桃样品的高质量序列均在98%以上,映射序列均在85%以上,Q30均大于94%;共筛选出差异表达基因6316个,其中,不同比较组共有差异表达基因1207个;注释到GO的差异表达基因参与分子功能、细胞组分、生物过程等,参与生物过程最多;注释到KEGG通路的差异表达基因分别参与环境信息处理、生物体系统、遗传信息处理、细胞过程和新陈代谢5大通路的18个分支,注释到碳水化合物代谢分支的差异表达基因较多;1806个差异表达基因预测为转录因子,共注释到57个转录因子家族,其中,bHLH家族最多。【结论】玛瑙红樱桃胚败育果实膨大期与转色期、成熟期的基因表达差异较大,转色期与成熟期基因表达差异变小,可在果实转色前筛选胚败育相关基因进行功能验证。

体外受精-胚胎移植的针灸辅助治疗策略

本文基于全国名中医尤昭玲中医全病程管理辅助体外受精-胚胎移植(IVF-ET)的“二段四期三法”辨治理念,从理、法、方、穴、术5个方面探析针灸辅助的治疗策略。理:辨证审因,随案调治;法:依理取法,阶段诊治;方:依法定方,整体调治;穴:精准取穴,配伍同治;术:针刺为主,多法施治,为临床运用针灸辅助IVF-ET提供思路和参考依据。

生长激素宫腔灌注应用于胚胎反复移植失败的效果及对患者子宫动脉血流参数、胚胎种植率的影响

目的:分析生长激素宫腔灌注应用于胚胎反复移植失败的效果及对患者子宫动脉血流参数、胚胎种植率的影响。方法:以2020年5月—2023年5月在青岛大学附属医院生殖医学科接受诊疗的胚胎反复移植失败患者80例作为研究对象,以随机数字表法分组。两组均进行人工周期和胚胎移植,经期第10、12、14天时,对照组(n=40)进行生理盐水宫腔灌注,观察组(n=40)进行生长激素宫腔灌注。比较两组子宫动脉血流参数、移植结局、子宫内膜厚度及蠕动波情况。结果:宫腔灌注后,两组子宫动脉收缩期峰值流速/舒张末期流速(S/D)、搏动指数(PI)及阻力指数(RI)对比,差异均无统计学意义(P>0.05);观察组胚胎种植率为50.00%,较对照组的26.92%高,差异有统计学意义(P<0.05);观察组的临床妊娠率为87.50%,高于对照组的37.50%,差异有统计学意义(P<0.05);两组生化妊娠率、活产率、持续妊娠率及早期流产率对比,差异均无统计学意义(P>0.05);宫腔灌注后,两组子宫内膜厚度均高于宫腔灌注前,差异均有统计学意义(P<0.05);宫腔灌注后,两组子宫内膜蠕动波频率均低于宫腔灌注前,差异均有统计学意义(P<0.05)。结论:生长激素宫腔灌注应用于胚胎反复移植失败患者中的效果显著,不仅能提高胚胎种植率和临床妊娠率,而且在改善子宫内膜厚度及蠕动波方面也有保障。

Effect of Insulin-Transferrin-Selenium on Goat Oocytes Maturation and Embryo Development

[Objective] The research aimed to enhance culture efficiencies of oocyte and embryo of goat in vitro and to explore serum-free culture system in vitro.[Method] At present,the conventional solutions of oocyte maturation and embryo development in vitro were always added into 1% ITS(Insulin-transferrin-selenium) or using 1% ITS to replace FBS in 2 kinds culture solutions for conducting in vitro cultures of goat oocyte and parthenogenetic embryo.The influences of ITS on their developments were detected.[Result] ITS in maturation liquid of oocytes could not increase oocytes maturation rate but significantly increased blastocyst rate (58.06% vs. 48.19%)of parthenogenetic embryo.If FBS in maturation liquid of oocytes was replaced by ITS, the maturation rate, cleavage rate and blastocyst rate were basically unchanged.Adding ITS into embryo medium could increase blastocyst rate (68.30% vs. 56.82%)of parthenogenetic embryo of goat.If FBS in embryo medium was replaced by ITS,the cleavage rate didn’t change basically,while the blastocyst rate in ITS was obviously lower than that in FBS group(42.33% vs.56.82%).[Conclusion] ITS could promote maturation of oocyte in vitro and early embryonic development, in addition,ITS could replace serum in maturation medium of oocyte as serum-free culture system for conducting relevant researches.

Embryo Glue在IVF-ET临床应用的前瞻性研究

目的：研究EmbrycGlue是否有利于IVF-ET妊娠率的提高。方法：将2003年2月～2004年2月在本中心接受常规体外受精-胚胎移植（IVF-ET）或单精子卵母细胞浆内注射（ICSI）治疗周期的180例不孕患者随机分成两组进行双盲试验，实验组共100例，使用EmbryoGlue作为胚胎移植液，对照组80例，使用IVF-20胚胎培养液作为移植液。结果：实验组平均移植胚胎数为2．5个，对照组为2．4个（P〉0．05），实验组临床妊娠率及胚胎种植率分别为46．0％、32．7％，对照组为38．7％、26．4％，实验组临床妊娠率及胚胎种植率与对照组相比有上升趋势。结论：使用Embryo Glue作为胚胎移植液有助于提高妊娠率。

Callus Induction from Mature Embryos of Maize

In this study we studied the factors influencing the callus induction from mature embryos of maize inbred lines Qi 319, Zhen 58, Chang 7 -2, Lx 9801 and 81162, such as genotype, combination of plant growth regulators, and low-temperature pretreatment. The results showed that the induction rate of Qi 319 was the highest among the four genotypes tested; combination of 4.0 mg/L 2,4-D ＋ 0.5 mg/L 6-BA was suitable for inducing callus from mature embryos; three days of 4℃ pretreatment can promote the callus induction significantly. The indices optimized in the present study are helpful for establishing genetic transformation system in maize without considering seasonal variation.

补肾活血方对抗磷脂抗体阳性反复种植失败患者妊娠结局的影响

目的:观察补肾活血方对抗磷脂抗体阳性反复种植失败(RIF)患者妊娠结局的影响。方法:选取188例抗磷脂抗体阳性RIF患者,按随机数字表法分为补肾活血方组和对照组,两组各94例。两组均给予冻融胚胎移植方案治疗,对照组同时口服拜阿司匹林治疗,治疗组在对照组基础上给予补肾活血方治疗。比较两组子宫内膜容受性超声检测指标、子宫内膜容受性分子标志物指标、中医证候积分及临床疗效、安全性。结果:两组基线时子宫内膜厚度及血流参数比较,无统计学差异(P>0.05)。两组胚胎移植前1天子宫内膜厚度及子宫内膜收缩期峰值速度/舒张末期流速(S/D)较基线时升高,子宫内膜搏动指数(PI)、阻力指数(RI)较基线时下降(P<0.05)。治疗组胚胎移植前1天子宫内膜厚度及子宫内膜S/D高于对照组,子宫内膜PI、RI低于对照组(P<0.05)。治疗组种植窗期整合素β3低于对照组,整合素β1、同源框基因11(HoxA11)高于对照组(P<0.05)。两组治疗后中医证候积分较治疗前降低,治疗组更低(P<0.05)。治疗组临床妊娠率62.22%、活产率55.56%高于对照组,胚胎种植率40.27%,流产率10.71%,与对照组比较,无统计学差异(P>0.05)。结论:补肾活血方可改善抗磷脂抗体阳性RIF患者子宫内膜容受性,提高临床妊娠率,降低早期流产率。