MiR-142-3p Regulates ILC1s by Targeting HMGB1 via the NF-κB Pathway in a Mouse Model of Early Pregnancy Loss

Objective Innate lymphoid cells(ILCs)are a class of newly discovered immunocytes.Group 1 ILCs(ILC1s)are identified in the decidua of humans and mice.High mobility group box 1(HMGB1)is predicted to be one of the target genes of miR-142-3p,which is closely related to pregnancy-related diseases.Furthermore,miR-142-3p and HMGB1 are involved in regulating the NF-κB signaling pathway.This study aimed to examine the regulatory effect of miR-142-3p on ILC1s and the underlying mechanism involving HMGB1 and the NF-κB signaling pathway.Methods Mouse models of normal pregnancy and abortion were constructed,and the alterations of ILC1s,miR-142-3p,ILC1 transcription factor(T-bet),and pro-inflammatory cytokines of ILC1s(TNF-α,IFN-γand IL-2)were detected in mice from different groups.The targeting regulation of HMGB1 by miR-142-3p in ILC1s,and the expression of HMGB1 in normal pregnant mice and abortive mice were investigated.In addition,the regulatory effects of miR-142-3p and HMGB1 on ILC1s were detected in vitro by CCK-8,Annexin-V/PI,ELISA,and RT-PCR,respectively.Furthermore,changes of the NF-κB signaling pathway in ILC1s were examined in the different groups.For the in vivo studies,miR-142-3p-Agomir was injected in the uterus of abortive mice to evaluate the abortion rate and alterations of ILC1s at the maternal-fetal interface,and further detect the expression of HMGB1,pro-inflammatory cytokines,and the NF-κB signaling pathway.Results The number of ILC1s was significantly increased,the level of HMGB1 was significantly upregulated,and that of miR-142-3p was considerably downregulated in the abortive mice as compared with the normal pregnant mice(all P<0.05).In addition,miR-142-3p was found to drastically inhibit the activation of the NF-κB signaling pathway(P<0.05).The number of ILC1s and the levels of pro-inflammatory cytokines were significantly downregulated and the activation of the NF-κB signaling pathway was inhibited in the miR-142-3p Agomir group(all P<0.05).Conclusion miR-142-3p can regulate ILC1s by targeting HMGB1 via the NF-κB signaling pathway,and attenuate the inflammation at the maternal-fetal interface in abortive mice.

Diagnostic performance of dynamic contrast-enhanced magnetic resonance imaging parameters and serum tumor markers in rectal carcinoma prognosis

BACKGROUND Rectal carcinoma(RC),one of the most common malignancies globally,presents an increasing incidence and mortality year by year,especially among young people,which seriously affects the prognosis and quality of life of patients.At present,dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI)parameters and serum carbohydrate antigen 19-9(CA19-9)and CA125 Levels have been used in clinical practice to evaluate the T stage and differentiation of RC.However,the accuracy of these evaluation modalities still needs further research.This study explores the application and value of these methods in evaluating the T stage and differentiation degree of RC.AIM To analyze the diagnostic performance of DCE-MRI parameters combined with serum tumor markers(TMs)in assessing pathological processes and prognosis of RC patients.METHODS A retrospective analysis was performed on 104 RC patients treated at Yantai Yuhuangding Hospital from May 2018 to January 2022.Patients were categorized into stages T1,T2,T3,and T4,depending on their T stage and differentiation degree.In addition,they were assigned to low(L group)and moderate-high differentiation(M+H group)groups based on their differentiation degree.The levels of DCE-MRI parameters and serum CA19-9 and CA125 in different groups of patients were compared.In addition,the value of DCE-MRI parameters[volume transfer constant(Ktrans),rate constant(Kep),and extravascular extracellular volume fraction(Ve)in assessing the differentiation and T staging of RC patients was discussed.Furthermore,the usefulness of DCE-MRI parameters combined with serum CA19-9 and CA125 Levels in the evaluation of RC differentiation and T staging was analyzed.RESULTS Ktrans,Ve,CA19-9 and CA125 were higher in the high-stage group and L group than in the low-stage group and M+H Group,respectively(P<0.05).The areas under the curve(AUCs)of the Ktran and Ve parameters were 0.638 and 0.694 in the diagnosis of high and low stages,respectively,and 0.672 and 0.725 in diagnosing moderate-high and low differentiation,respectively.The AUC of DCE-MRI parameters(Ktrans+Ve)in the diagnosis of high and low stages was 0.742,and the AUC in diagnosing moderate-high and low differentiation was 0.769.The AUCs of CA19-9 and CA-125 were 0.773 and 0.802 in the diagnosis of high and low stages,respectively,and 0.834 and 0.796 in diagnosing moderate-high and low differentiation,respectively.Then,we combined DCE-MRI(Ktrans+Ve)parameters with CA19-9 and CA-125 and found that the AUC of DCE-MRI parameters plus serum TMs was 0.836 in the diagnosis of high and low stages and 0.946 in the diagnosis of moderate-high and low differentiation.According to the Delong test,the AUC of DCE-MRI parameters plus serum TMs increased significantly compared with serum TMs alone in the diagnosis of T stage and differentiation degree(P<0.001).CONCLUSION The levels of the DCE-MRI parameters Ktrans and Ve and the serum TMs CA19-9 and CA125 all increase with increasing T stage and decreasing differentiation degree of RC and can be used as indices to evaluate the differentiation degree of RC in clinical practice.Moreover,the combined evaluation of the above indices has a better effect and more obvious clinical value,providing important guiding importance for clinical condition judgment and treatment selection.

输卵管因素不孕患者在体外受精-胚胎移植前行腹腔镜手术的获益程度

目的 探讨轻度输卵管远端梗阻不孕患者在体外受精-胚胎移植(IVF-ET)前行腹腔镜手术的获益程度。方法 回顾性分析2013年1月至2018年6月,在广东省妇幼保健院生殖健康与不孕症科就诊的228例输卵管因素不孕症患者。选择首先进行腹腔镜治疗患者148例,随访术后2年内自然妊娠结局;腹腔镜术后6个月未自然妊娠转IVF-ET者纳入为手术组(n=84),选择同期未经腹腔镜手术轻度输卵管远端梗阻不孕患者为非手术组(n=80),对比两组患者第一次新鲜胚胎移植周期的妊娠结局,评估IVF-ET前行腹腔镜手术的获益程度。结果 148例患者腹腔镜术后2年内的自然临床妊娠率为29.7%,约50%的妊娠发生在术后6个月内。IVF-ET结局中手术组早期流产率低于非手术组,差异有统计学意义(P <0.05);临床妊娠率、异位妊娠率、活产率差异无统计学意义(P> 0.05)。结论 轻度输卵管远端梗阻患者腹腔镜术后2年内可获得约30%的自然妊娠率,如术后6个月未自然妊娠者建议行IVF-ET;轻度输卵管远端梗阻患者IVF-ET前行腹腔镜手术治疗,可能降低早期流产率。

Process for improving the ladle free- opening rate for high aluminum steel in continuous casting

Steel 20Mn23AlV is a type of high aluminum steel with a very low ladle free-opening rate. The aluminum composition of 20Mn23AlV ranges from 1.6% to 2.45% ,which is significantly higher than other types of steel. According to the real condition of 40 t ladle in steel-making plant of Baosteel Special Steel Company, previous works show that the key factors affecting the ladle free-opening rate of high aluminum steel in continuous casting are：sand material, accessories baking, ladle nozzle cleaning, the process and amount of adding sand, and the rate of argon stirring during refining. Therefore, improving the ladle filler sand quality, baking all of the raw materials, controlling the addition of ladle filler sand, cleaning the ladle nozzle, and optimizing argon stirring during the refining process can resolve the problem of a low ladle free-opening rate of high aluminum steel caused by the long ladle time of liquid steel.

Effect of varying normal stress on stability and dynamic motion of a spring-slider system with rate- and state-dependent friction

Incorporating rate and state friction laws, stability of linearly stable （i.e., with stiffness greater than the critical value） spring-slider systems subjected to triggering perturbations was analyzed under variable normal stress condition, and comparison was made between our results and that of fixed normal stress cases revealed in previous studies. For systems associated with the slip law, the critical mag- nitude of rate steps for triggering unstable slips are found to have a similar pattern to the fixed normal stress case, and the critical velocity steps scale with a/（b - a） when k = kcr for both cases. The rate-step boundaries for the variable normal stress cases are revealed to be lower than the fixed normal stress case by 7 %-16 % for a relatively large ct = 0.56 with （b - a）/a ranging from 0.25 to 1, indicating easier triggering under the variable normal stress condition with rate steps. The difference between fixed and variable normal stress cases decreases when the α value is smaller. In the same slip- law-type systems, critical displacements to trigger instability are revealed to be little affected by the variable normal stress condition. When k 〉 kcr（V,）, a spring-slider system with the slowness law is much more stable than with the slip law,suggesting that the slowness law fits experimental data better when a single state variable is adopted. In stick-slip motions, the variable normal stress case has larger stress drops than the constant normal stress case. The variable normal stress has little effect on the range of slip velocity in systems associated with the slowness law, whereas systems associated with the slip law have a slowest slip velocity immensely smaller than the fixed normal stress case, by ~ 10 orders of magnitude.

Effect of cooling rate on evolution of superconducting phases during decomposition and recrystallization of (Bi,Pb)-2223 core in Ag-sheathed tape

The reformation of (Bi,Pb)-2223 from the liquid or melt is very important for a melting process of (Bi,Pb)-2223 tape. By combination of quenching experiment with X-ray diffraction (XRD) analysis, the effect of cooling rate on the evolution of three superconducting phases in the (Bi,Pb)-2223 core of Ag-sheathed tape was investigated. The results show that (Bi,Pb)-2223 reformation from the melt seems to experience different routes during slowly cooling at different rates. One is that (Bi,Pb)-2223 phase reformed directly from the melt, and no Bi-2212 participate in this process. The other is that (Bi,Pb)-2223 is converted from the intermediate product, Bi-2212, which formed from the melt during the first cooling stage. Due to the inherent sluggish formation kinetics of (Bi,Pb)-2223 from Bi-2212, only partial (Bi,Pb)-2223 can finally be reformed with the second route.

Plastic Flow Modeling of Ti-5 Al-2 Sn-2 Zr-4 Mo-4 Cr Alloy at Elevated Temperatures and High Strain Rates

The true stress-sWain relationships of Ti-5A1-2Sn-2Zr-4Mo-4Cr（TC17） alloy with a wide range of strain rates were investigated by tmiaxial quasi-static and dynamic compression tests, respectively. Quasi- static compression tests were carried out with Instron 8874 test machine, while dynamic compression tests were performed with the split Hopkinson pressure bar （SHPB） which was installed with heating device and synchro- assembly system. The dynamic mechanical behaviors tests of TC17 were carded out from room temperature to 800 ℃ at intervals of 200 ℃ and at high sWain rates （5 500-1 9200 s-l）. The stress-strain curves considering temperature-sWain rate coupling actions were obtained. The Johnson-Cook constitutive model was developed through data fitting of the stress-sWain curves. The material constants in the developed constitutive model can be determined using isothermal and adiabatic stress-strain curves at different strain rates. The Johnson-Cook constitutive model provided satisfied prediction of the plastic flow stress for TC17 alloy.

Performance Analysis of Outage Probability and Error Rate of Square M-QAM in Mobile Wireless Communication Systems over Generalized α-μ Fading Channels with Non-Gaussian Noise

This paper derives new and exact closed-form expressions for the average symbol error rate(SER) of square M-ary quadrature amplitude modulation(M-QAM) in wireless communication systems over theα-μfading channels subject to an additive non-Gaussian noise. The obtained expressions take into account static and mobile wireless receivers. In addition, a closed-form expression for the outage probability in mobile networks is obtained. Please note that all derived expressions in this paper a valid for integer and non-integer values of the fading parameters. Analytical results are presented to study the impact of noise shaping parameter, severity of fading, and mobility on the average SER. Monte-Carlo simulations results are also provided to validate the accuracy of the analytical results.

NO_3^-/NH_4^+ ratios affect plant growth, chlorophyll content,respiration rate, and morphological structure in Malus hupehensis seedlings

Malus hupehensis （Pamp.） Rehd. is a widely cultivated rootstock in China. We studied the effect of three NO3-/NH4＋ ratios （100/0, 50/50, and 0/100, molar basis） at total nitrogen （N） concentration of 8 mmoL L-1 in a nutrient solution on M. hupehensis seedlings. Plant biomass, NO3- and NH4＋concentrafion, chlorophyll con- tent, respiratory rate, and cellular structure were investi- gated. M. hupehensis seedlings at the NO3-/NH4＋ ratio of 50/50 had the highest level of fresh weight, dry weight, shoot length, and chlorophyll （a, b, and a ＋ b） content, but the lowest respiration rate in the leavesand roots. In addition, thickness and numbers of palisade and spongy tissue cells of the leaves were greater with this treatment than with other treatments. At the NO3-/NH4＋ ratio of 100/0, the leaves and roots had higher NO3- concentration and lower NH4＋ concentration. However, the opposite trend occurred at the NO3-/NH4＋ ratio of 0/100. Chloro- phyll （a, b, and a ＋ b） content was lowest at the NO3-/NH4＋ ratio of 100/0 than at the other ratios. At the NO3-/ NH4＋ ratio of 0/100, oxygen （02） consumption increased in the leaves and roots, and irregular epidermis and cortex cells were observed in the root apical meristematic and mature region. Our results indicated that the NO3-INH4＋ ratio at 50/50 was suitable for growth of M. hupehensis seedling to achieve the highest biomass production and efficiency.

THE BROAD-BAND CCD PHOTOMETRY AND DUST PRODUCTION RATES OF COMET HALE-BOPP

Based upon broad-band CCD observation data of comet Hale-Bopp obtained by a 60cm telescope at Xinglong Station of Beijing Astronomical Observatory during March-August, 1996, the photometric results of comet Hale-Bopp are reported. Using the photometric results, the dust production rate, radius and mass of nucleus of comet Hale-Bopp are estimated as follows: dM/dt～1.5×10 5 kgs -1, R n～35.5km, and M n～5.65×10 16kg.

rh G-CSF皮下注射联合常规治疗对复发性流产患者妊娠结局的影响

目的:研究重组人粒细胞集落刺激因子(rhG-CSF)皮下注射联合常规治疗对复发性流产(RSA)患者妊娠结局的影响。方法:选取2019年1月-2022年1月贵阳市第一人民医院收治的100例RSA患者,按照单双号法随机分为对照组(单号,n=50,进行常规治疗)和观察组(双号,n=50,在对照组基础上予以rhG-CSF皮下注射治疗)。比较两组的妊娠率、流产率、活产率及人绒毛膜促性腺激素(hCG)、血清可溶性fms样酪氨酸激酶1(sFlt-1)、血管内皮生长因子(VEGF)、胎盘生长因子(PLGF)水平变化,统计比较两组治疗期间不良反应发生情况。结果:治疗后,观察组妊娠率和总活产率明显高于对照组,差异有统计学意义(P<0.05)。妊娠8周,观察组活产患者hCG水平高于对照组,差异有统计学意义(P<0.05);妊娠16周,两组活产患者PLGF水平高于妊娠12周,sFlt-1及s Flt-1/PLGF低于妊娠12周,且观察组活产患者PLGF水平高于对照组,sFlt-1及sFlt-1/PLGF低于对照组,差异有统计学意义(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论:rhG-CSF皮下注射联合常规治疗可有效降低RSA患者流产率,提高活产率,安全有效。

ASTM E1268-19带状组织评定方法研究

介绍了美标ASTM E1268-19显微组织带状物级别或取向度的评级方法。采用ASTM E1268-19与GB/T13299—91试验方法,评定了热轧板卷试样的珠光体带状组织,并对ASTM E1268标准方法中检测视场的影响因素进行了分析。结果表明:增加检测视场数有利于提高定量评定结果的准确度;对于带状严重的组织,因其平行测量线容易全部落入单相组织内部或外部,对带状等级BR(banding rate)值的测量结果影响较大,针对此类情况,有必要增加检测视场数或测量线的数量,以提高BR的检测精度。

PAgT及血清FIB、D-D、P、β-HCG水平联合检测预测孕早期自然流产的价值

目的探讨血小板聚集率(PAgT)及血清纤维蛋白原(FIB)、D-二聚体(D-D)、孕酮、β-人绒毛膜促性腺激素(β-HCG)水平联合检测对孕早期自然流产的预测价值。方法选取该院2019年4月至2020年10月接收的有自然流产危险因素的孕妇142例纳入观察组,另选取同期健康孕妇135例纳入对照组。所有研究对象均检测PAgT及血清FIB、D-D、孕酮、β-HCG水平。比较两组上述指标和孕早期自然流产发生率;将观察组孕早期自然流产者纳入发生组,否则纳入未发生组,比较两亚组上述指标水平;绘制受试者工作特征(ROC)曲线,采用曲线下面积(AUC)评价PAgT、血清FIB、D-D、孕酮、β-HCG水平单独与联合检测对有自然流产危险因素的孕妇发生孕早期自然流产的预测效能。结果观察组PAgT、血清FIB和D-D水平均高于对照组,血清孕酮和β-HCG水平均低于对照组,差异有统计学意义(P<0.05)。观察组孕早期自然流产发生率为32.39%(46/142),高于对照组的2.22%(3/135),差异有统计学意义(P<0.05)。发生组PAgT、血清FIB和D-D水平均高于未发生组,血清孕酮和β-HCG水平均低于未发生组,差异有统计学意义(P<0.05)。PAgT及血清FIB、D-D、孕酮、β-HCG水平联合检测预测孕早期自然流产的灵敏度和AUC分别为97.83%和0.988,均高于各项指标单独检测(P<0.05),特异度与各项指标单独检测比较,差异均无统计学意义(P>0.05)。结论相较于健康孕妇,有孕早期自然流产风险的孕妇PAgT、血清FIB和D-D水平偏高,而血清孕酮和β-HCG水平偏低,上述指标联合检测可提高对有自然流产危险因素的孕妇孕早期自然流产的预测效能。

High Strain Rate Induced Plasticity-increasing of Metallic Materials under Tension

The effect of strain rate on plasticity has been Investigat-ed for three metallic materials with dynamic tension tech-nique. A phenomenon of high strain induced plasticity -increasing was found for tested materials. The elongation of quenched 30CrMnSiNi2A is 14. 5% under 40 m/s loading rate which is more than two times of the 7 % un-der 0. 5 mm/min. This typic high strain rate induced plasticity - Increasing phenomenon is associated with adiabatic heating, strain twinning and suppression of strain - induced - phase transformation.

低位水囊引产联合硬膜外分娩镇痛提高产妇经阴道分娩率的效果

目的探讨低位水囊引产联合硬膜外分娩镇痛提高产妇经阴道分娩率的效果。方法选取本院56例足月分娩产妇为研究对象,随机分为两组,各28例。对照组采用硬膜外分娩镇痛,试验组采用低位水囊引产联合硬膜外分娩镇痛,比较两组的产程用时、产后出血量、母婴不良结局及分娩情况。结果试验组第一产程、总产程用时短于对照组,产后24h出血量少于对照组,差异有统计学意义(P<0.05);试验组母婴不良结局发生率为3.57%,低于对照组的21.43%,差异有统计学意义(P<0.05);试验组经阴道分娩率为75.00%,高于对照组的57.14%,差异有统计学意义(P<0.05)。结论联合应用低位水囊引产与硬膜外分娩镇痛可以有效缩短产程,降低产后出血和母婴不良结局风险,提高经阴道分娩率。

正常形态精子百分率与常规体外受精-胚胎移植结局的相关性

目的：探讨未经优化处理的精子形态参数在常规体外受精（IVF）中的应用价值。方法：分析优化处理前后精子形态差异,并根据处理前精子形态将因单纯输卵管因素进行IVF的908个周期进行分组：研究1为≤4%组、〉4%~≤15%组及〉15%组;研究2为≤1%组、〉1%~≤2%组、〉2%~≤3%组及〉3%~≤4%组,分别比较各组间的受精率、卵裂率、优质胚胎率、囊胚转化率及妊娠率等指标有无显著性差异。结果：正常形态精子百分率≤4%组的总受精率显著低于〉4%~≤15%组及〉15%组（74.40%vs 78.61%及80.03%）（P〈0.01）;〉3%~≤4%组的2PN受精率（85.47%vs 77.23%、78.97%及78.99%）、卵裂率（98.73%vs 95.71%、96.01%和97.27%）、囊胚形成率（63.41%vs 53.85%、49.01%和49.55%）均显著高于≤1%组、〉1%~≤2%组及〉2%~≤3%组（P〈0.01或0.05）,而临床妊娠率、种植率、早期流产率、活产率、出生畸形率各组间均无统计学差异（P〉0.05）。结论：正常形态精子百分率≤4%可影响IVF的总受精率,正常形态精子百分率≤3%时IVF的正常受精率下降。但即使正常形态精子百分率≤1%仍不会造成受精障碍或受精失败,因此,畸形精子症不能单独成为决定ICSI的指征。同时,精子形态检测对IVF的胚胎质量、临床妊娠率及抱婴率等无明显预测意义。

男方HBV慢性感染对体外受精-胚胎移植治疗结局的影响

目的探讨男方乙型肝炎病毒(HBV)慢性感染对体外受精-胚胎移植(IVF-ET)治疗结局的影响。方法以男方HBsAg阳性而女方HBsAg阴性的不孕症夫妻102对为研究组;双方均HBsAg阴性的不孕症夫妻204对为对照组,比较两组的累积胚胎评分(CES)、受精率、卵裂率、优质胚胎率、种植率、临床妊娠率、早期流产率、晚期流产率、分娩率和新生儿畸形率。结果102例男方HBsAg阳性组与204例男方HBsAg阴性组的累积胚胎评分(52.8±18.7对55.4±16.9)、受精率(66.9%对66.1%)、卵裂率(97.6%对97.2%)、优质胚胎率(34.0%对37.1%)、种植率(40.9%对34.6%)、临床妊娠率(56.9%对50%)、早期流产率(6.9%对5.9%)、晚期流产率(8.6%对4.9%)、分娩率(40.2%对43.6%)、新生儿畸形率(0对0),两组间无统计学差异(P>0.05)。结论男方慢性HBV感染不影响IVF-ET治疗的结局。

常规IVF授精后20-22h ICSI再授精的预后

目的:比较补救ICSI和同期实施的ICSI结果并评估补救ICSI的预后.方法:自2000-04/2003-05我中心613个体外受精-胚胎移植(IVF-ET)周期中,有24个精液指标正常的常规IVF治疗周期为完全受精失败或(和)几乎完全受精失败,共有215个未受精的卵于常规IVF授精后20～22 h实施ICSI再授精(补救ICSI),为补救ICSI组;同时期实施的178个周期的ICSI为对照组,将两组的结果相比较.结果:补救ICSI组受精率为48.4%,低于对照组受精率为56.4%,具有统计学意义(P＜0.05);对照组的临床妊娠率和植入率分别为28.1%和9.8%,而补救ICSI组获得3例妊娠,妊娠率为12.5%和植入率为4.3%,虽然无统计学意义(P＞0.05),但对照组的两项指标明显高于补救ICSI组.遗憾的是补救ICSI组3例妊娠中有2例流产,1例胎死腹中行引产.结论:尽管补救ICSI的预后非常差,但为了避免周期取消并为不孕夫妇争取一次受孕的机会,可以考虑实施补救ICSI.关键是实施补救ICSI的时间选择,使卵处于最适宜的受精窗口内,获得有活力的胚胎并提高临床妊娠率.

中药联合淋巴细胞主动免疫治疗母-胎免疫识别低下型复发性流产的meta分析

目的:评价中药联合主动免疫对母-胎免疫识别低下型复发性流产的治疗效果。方法:全面检索中国知网全文期刊数据库、万方数据库、重庆维普中文科技期刊数据库、中国生物医学文献数据库,收集中药联合主动免疫与单纯主动免疫比较对母-胎免疫识别低下型复发性流产治疗效果的随机对照试验,对资料进行评价并用Revman 5.2进行meta分析。结果:符合纳入标准的研究有10例共763个患者。Meta分析结果显示中药联合主动免疫的妊娠成功率高于单纯主动免疫组(OR 3.31,95%[2.29,4.78],P<0.00001),差异有统计学意义。结论:中药联合主动免疫治疗母-胎免疫识别低下型复发性流产与单纯主动免疫相比妊娠成功率提高。

精子DNA损伤对IVF/ICSI-ET结局影响的回顾性资料分析

目的:探讨精子DNA损伤对体外受精/卵胞浆内单精子注射-胚胎移植(IVF/ICSI-ET)结局的影响。方法:回顾性分析了初次行常规IVF和ICSI治疗的192例不孕夫妇的临床资料。分别比较行IVF和ICSI治疗时,精子DNA碎片指数(DFI)≤15%和DFI>15%的受精率、优质胚胎率、种植率、临床妊娠率和流产率的差异;并比较DFI>15%时,不同受精方式(IVF或ICSI)对受精率、优质胚胎率和临床妊娠率的影响。结果:在IVF或ICSI治疗周期中,精子DNA损伤对受精率、优质胚胎率、种植率、临床妊娠率和流产率均无影响(P>0.05)。在DFI>15%情况下,行IVF治疗的受精率、优质胚胎率、种植率和临床妊娠率与行ICSI治疗比较,无统计学差异(P>0.05)。结论:精子DNA损伤不影响IVF/ICSI-ET的结局。对于DFI>15%的患者ICSI-ET与IVF-ET的治疗结局相似。