精子DNA碎片指数和精子畸形率对ICSI临床结局的影响

目的:通过评估ICSI治疗前的精子畸形率(SMR)和精子DNA碎片指数(DFI),探讨精子DFI和SMR对卵胞浆内单精子注射(ICSI)助孕结局的影响。方法:共入组79对因少弱精子症实施第一周期ICSI治疗的不孕夫妇,在进入治疗周期前3⁶个月,评价精子浓度、前向运动精子百分率、SMR及DFI。主要观察SMR和DFI与ICSI结局参数的关系。结果:79例少弱精子症患者DFI正常51例,异常28例,异常组的DFI值明显升高(14.18%vs 41.47%);巧合的是,SMR正常组同样为51例,异常组28例,异常组的SMR值亦明显升高(87.88%vs98.46%)。按DFI正常(DFI≤25%)与异常(DFI>25%)分组,或按SMR正常(≤96%)与异常(>96%)分组,组间的双方年龄、女方BMI、获卵数、移植胚胎数等基本情况差异无统计学意义。DFI正常和异常组间,SMR正常和异常组间的受精卵子数、可移植胚胎数、早期流产率无显著差异;异常组生化妊娠率(43.5%vs 61.5%)和临床妊娠率(39.1%vs 56.4%)降低,但差异无统计学意义(P=0.19及0.10)。精子DFI与SMR呈显著正相关(r=0.231,P<0.05)。结论:精子DFI增高(>25%),与按严格标准检测的SMR增高(>96%)男性行ICSI治疗,生化妊娠率和临床妊娠率降低,但与正常者比较未发现有统计学差异,可能与样本量小有关,有必要深入研究。     

难治性高精子DNA碎片指数患者的睾丸精子在ICSI周期中应用的临床结局分析

目的 分析难治性高精子DNA碎片指数(DFI)患者的睾丸精子行卵胞浆内单精子注射(ICSI)的临床妊娠结局.方法 回顾分析2018年1月至2020年9月于我中心进行ICSI助孕的难治性高DFI患者临床资料,根据取精方式不同分为睾丸穿刺取精组(TESA组,n=27)和手淫射精组(EJ组,n=34),比较两组患者的基本资料...     

无创胚胎染色体筛查在男性严重少弱畸精子症不育患者的临床应用

目的:探讨无创胚胎染色体筛查技术(NICS)对男性严重少弱畸精子症辅助生殖妊娠结局的应用价值.方法:随机选取2017年1月至2020年12月因男方严重少弱畸形精症行辅助生殖助孕的男性不育患者共计170例,接受NICS治疗的85对夫妻作为试验组,接受卵胞质内单精子注射(ICSI)85对夫妇作为对照组,比较两组女方年龄、女...     

精子DNA碎片指数与IVF/ICSI成功率的关系

精子DNA碎片指数(DFI)是指发生DNA链断裂的精子占全部精子的百分比。已有的一些研究显示,高DFI可能会导致男性不育或者女性早期流产。目前已有一些研究显示,DFI升高可导致自然妊娠率降低及早期自然流产率升高,并且在辅助生殖过程中,高DFI的患者更容易失败。此外,对高DFI患者已有初步的治疗方案或预防方法。本文综述了DFI对自然妊娠以及IVF/ICSI妊娠结局的影响以及对DFI增高的治疗方法的研究现状与进展。     

附睾及睾丸精子行ICSI治疗无精子症妊娠结局

目的 :回顾性分析 5 0例无精子症患者利用附睾或睾丸精子行卵细胞胞质内单精子注射 (ICSI)的治疗结局。　方法 :经皮附睾精子抽吸术 (PESA)或睾丸切开取精术 (TESE)获得精子行ICSI,评估取精的成功率 ,ICSI后的受精率、种植率及临床妊娠率 ,以精液精子ICSI组作为对照。　结果 :PESA、TESE与精液精子组分别注射MⅡ期成熟卵子 2 86、36 0、15 6 9个 ,受精率 3组差异无显著性 (74 .8% ,75 .2 %vs 77.5 % ,P >0 .0 5 )。种植率、妊娠率TESE与精液精子组差异无显著性 (2 9.87%vs 2 9.5 4 % ;4 8.15 %vs 5 2 .6 0 % ,P >0 .0 5 ) ,PESA组显著高于TESE组及精液精子组 (5 0 .85 %vs 2 9.87% ,2 9.5 4 % ;6 8%vs 4 8.15 % ,5 2 .6 0 % ,P <0 .0 5 )。PESA组共妊娠 17例 ,已分娩 6例 ,继续妊娠 9例 ,流产 2例 ;TESE组共妊娠 13例 ,已分娩 7例 ,继续妊娠 4例 ,流产 2例。　结论 :采用附睾或睾丸精子行ICSI是治疗男性无精子症的有效方法。     

体外受精完全失败行卵细胞胞质内单精子注射补救的应用价值探讨

目的 :对受精完全失败的体外受精 (IVF)周期及时行卵细胞胞质内单精子注射 (ICSI)进行补救的临床应用价值进行探讨。　方法 :取精卵共培养 16～ 18h后受精完全失败的 16个周期 ,及时将所有可见第一极体的卵母细胞进行补救ICSI。　结果 :行ICSI后 ,卵母细胞异常受精率为 17.9% ,正常受精率为 4 2 .7% ,正常卵裂率为79.6 % ,种植日优质胚胎率为 2 9.7%。 16个周期共移植胚胎 5 4个 ,平均每个周期种植 3.4个。共获得 3例妊娠 ,临床妊娠率 18.8%。　结论 :补救性ICSI是否有临床应用价值 ,主要与可供行补救ICSI的卵母细胞数量和取卵当日卵母细胞的成熟度有关。     

应用激光从完全不动精子中筛选存活精子行ICSI后获临床妊娠:附2例报告

目的:探讨应用激光筛选存活精子的可行性及临床应用价值。方法:对2例完全不动的精子(1例睾丸穿刺取精和1例射出精液),用激光射击精子尾部,选择激光射击后卷尾的精子用于卵细胞胞质内单精子注射(ICSI)。结果:2例患者用激光选择的精子行ICSI后,平均受精率达88.89%,新鲜周期移植后,两者均获得了临床妊娠。结论:激光是筛选存活精子的有效方法,临床应用可获得理想的妊娠结局。     

睾丸精子行ICSI改善严重畸形精子症患者治疗结局5例报告

目的:探讨利用睾丸精子行卵细胞胞质内单精子注射(ICSI)治疗严重畸形精子症患者(精液或附睾液精子畸形率≥99%)的可行性,改善辅助生殖技术治疗结局。方法:回顾性分析5例严重畸形症精子患者(附睾液精子,n=4;精液精子,n=1)利用不同来源精子行ICSI治疗的临床资料,并比较睾丸精子组与非睾丸精子组(附睾液精子和精液精子)之间受精率、卵裂率、优质胚胎率、妊娠率以及种植率的差异。结果:5例严重畸形精子症患者取精液精子或附睾液精子行ICSI治疗后无1例妊娠,而改用睾丸精子行ICSI治疗后4例成功妊娠。睾丸精子组与非睾丸精子组之间受精率、卵裂率及优质胚胎率均无显著差异(P>0.05),而睾丸精子组妊娠率和种植率均显著高于非睾丸精子组(P<0.01)。结论:对应用附睾精子或精液精子行ICSI治疗失败的严重畸形精子症患者改用睾丸精子治疗可有效改善其治疗结局。     

单细胞微阵列比较基因组杂交技术在胚胎植入前遗传学筛查中的应用

目的 建立利用单细胞微阵列比较基因组杂交(array CGH,aCGH)技术进行胚胎植入前遗传学筛查(PGS)技术平台,并应用aCGH技术进行PGS获得持续妊娠. 方法 采集废弃胚胎来源卵裂球10个,核型正常男性(46,XY)淋巴细胞3个,通过单细胞全基因组扩增后,利用aCGH技术进行染色体非整倍体分析;在此基础上,将aCGH技术应用于临床一例反复流产患者. 结果 3个淋巴细胞及9个废胚来源卵裂球的全基因组扩增成功,1个废胚来源卵裂球扩增失败,扩增成功的样本通过aCGH检测后均获得明确的诊断,3个淋巴细胞分析结果与已知核型一致;临床病例5个胚胎活检的单卵裂球均得到明确诊断,移植1枚正常整倍体胚胎后获得临床持续妊娠. 结论 在胚胎植入前遗传学筛查中,单细胞aCGH技术能全面地评估胚胎染色体组情况,可应用于临床PGS.     

胚胎植入前遗传学筛查技术的应用进展

胚胎植入前遗产学筛查通过对胚胎染色体数目异常的筛查来改善体外受精-胚胎移植的妊娠结局,尽管对筛查技术的准确率以及对妊娠结局的影响还存在争议,但其已被广泛地应用于人类辅助生殖技术中。随着细胞遗传学和分子遗传学的不断发展,各种新的遗传分析方法应用于胚胎植入前的遗传学筛查,如微阵列比较基因组杂交、单核苷酸多态微阵列技术、第二代测序技术以及延迟监测技术等。这些新技术的应用在理论上都能提高种植率和妊娠率,但在实际的临床实践中依然存在不同的局限性。本文综述胚胎植入前遗传学筛查中各项技术的应用进展及该领域的发展方向。     

The effect of sperm DNA fragmentation on intracytoplasmic sperm injection outcome

Our study objective was to assess the effect of various sperm DNA fragmentation levels on clinical intracytoplasmic sperm injection outcome. This retrospective study included 392 patients who underwent ICSI and performed sperm DNA fragmentation testing before the procedure. Based on sperm DNA fragmentation cut-off values, the patients were differentiated into 3 groups as <20%, 20%–30% and >30%. According to the female status, patients were differentiated into favourable group (n = 259) with female age <35 years and anti-Mullerian hormone level ≥7.1 pmol/L; and unfavourable group (n = 133) with female age ≥35 years and anti-Mullerian hormone level ≤7.1 pmol/L. The patient's medical records were reviewed, and patient's demographic, laboratory data including semen analysis, sperm DNA fragmentation determined by means of sperm chromatin dispersion, hormonal profile and data regarding intracytoplasmic sperm injection cycle were collected. This cohort reported that the clinical reproductive outcomes of intracytoplasmic sperm injection showed no statistical significance with increase sperm DNA fragmentation levels. In sperm DNA fragmentation above 30%, favourable females had significantly higher clinical pregnancy rate and live birth rate than unfavourable females, while fertilisation rate and miscarriage rate showed no significance between the subgroups. High sperm DNA fragmentation is linked to poor semen parameters.     

Testicular spermatozoon is superior to ejaculated spermatozoon for intracytoplasmic sperm injection to achieve pregnancy in infertile males with high sperm DNA damage

The purpose of this study was to compare the clinical outcome of testicular spermatozoon versus ejaculated spermatozoon in the treatment of infertile males with high sperm DNA damage, referred as sperm DNA fragmentation index (DFI), that attending intracytoplasmic sperm injection (ICSI) programme in terms of clinical pregnancy, births delivered as the primary and pregnancy loss and embryo fertilisation as the secondary outcome. A total of 102 males fulfilling the inclusion criteria were enrolled in the present study. Of the 102 males, 61 infertile males underwent testicular spermatozoon combined with ICSI while the remaining 41 males applied ejaculated spermatozoa in their first ICSI cycles, and the data of them were collected and analysed. In a 18‐month follow‐up, testicular spermatozoon achieved higher pregnancy rate and deliver rate than those in ejaculated sperm group (pregnancy rate, 36% vs. 14.6%, p = 0.017; deliver rate, 38.5% vs. 9.8%, p = 0.001). Nevertheless, there were no significant differences in the number of oocytes aspirated and number of embryos transferred between the two groups. Additionally, the fertilisation rate in the testicular sperm study cohort (70.4%) was also similar to that in the ejaculated sperm group (75.0%). Based on the current data, we conclude that testicular spermatozoon is the prior option in the treatment of infertile males with high sperm DFI in ICSI programme. More high‐quality studies with larger samples size are needed in the future due to the relative small size and the nonrandomized design of the present study.     

短期应用左卡尼汀在卵细胞胞质内单精子注射治疗少弱精子症中的作用

目的:观察左卡尼汀短期治疗男性少弱精子症后精液质量的变化及行卵细胞胞质内单精子注射(intracytoplasmic sperm injection,ICSI)助孕治疗后的临床结果。方法:研究对象为根据WHO标准检测精液分析结果为少弱精子症者129例,治疗组42例服用左卡尼汀2周后应用ICSI,对照组87例单纯应用ICSI助孕技术。对比治疗组患者用药前后精液精子浓度、活动率、(a+b)级精子百分率、畸形率指标,治疗组与对照组对比ICSI后受精率、卵裂率、有效胚胎率、临床妊娠率。结果:治疗组患者治疗后(a+b)级精子百分率(13.5±10.7)%,较治疗前(9.6±7.2)%提高(P<0.05),治疗组ICSI操作后有效胚胎率77.50%,明显高于对照组69.04%(P<0.05)。结论:左卡尼汀短期治疗能够改善精子质量,并有助于少弱精子症患者提高ICSI治疗的成功率。     

比较金黄地鼠和人卵浆内单精子注射技术受精率

卵浆内单精子注射技术（ｉｎｔｒａｃｙｔｏｐｌａｓｍｉｃｓｐｅｒｍｉｎｊｅｃｔｉｏｎ，ＩＣＳＩ）１９９２年后已广泛应用于治疗严重的男性不孕患者，平均受精率可达６５％～７０％。但仍有大约１／３的卵在ＩＣＳＩ后未能受精。金黄地鼠ＩＣＳＩ试验（ｈａｍｓｔｅｒ ＩＣＳＩａｓａｙ）可能有助于在临床ＩＣＳＩ治疗前了解精子受精的潜力。为了证明金黄地鼠ＩＣＳＩ和人类ＩＣＳＩ受精率之间的相关性，探索金黄地鼠ＩＣＳＩ能否用为临床ＩＣＳＩ的预试验，本研究采用同一男性不孕患者的精子经显微注射技术在同一天分别注入人和金黄地鼠卵。１６～１８小时后在光镜下观察有无双原核形成（２ ｐｒｏｎｕｃｌｅｕｓ，２ＰＮ）。人卵１１０个其受精率为５８２％（６４／１１０）。金黄地鼠卵１１４个其受精率为１６５％（１４／８０）。经统计学处理，二者无相关性。金黄地鼠ＩＣＳＩ分为两组，Ａ组：无选择地注射了已激活与未激活的卵６３个；Ｂ组：注意选择未激活的卵共５１个。虽经统计学处理无明显差异，但仍可看出Ｂ组的损伤率（１９７±１６６％）低于Ａ组（３５９±５．７％）（Ｐ＝００８）；而Ｂ组的受精率（１８３±１０．９％）略高于Ａ组（１４２±８．７％）（Ｐ＝０?     

Sperm DNA fragmentation in subfertile men: the effect on the outcome of intracytoplasmic sperm injection and correlation with sperm variables

OBJECTIVE

To present the first UK data on sperm DNA fragmentation levels in subfertile men and fertile controls, the correlation with semen variables, and to assess the effect on the outcome of intracytoplasmic sperm injection (ICSI).

PATIENTS, SUBJECTS AND METHODS

In all, 56 subfertile men undergoing ICSI (28 with positive and 28 with a negative outcome for paternity) and 10 control fertile semen donors were recruited. The sperm DNA fragmentation index (DFI) was assessed on raw pre‐preparation samples using the sperm chromatin structure assay. A mean of 5212 sperm were analysed per sample and DFI data are presented by fertility status, ICSI outcome and correlated with semen variables (assessed using World Health Organisation criteria).

RESULTS

Total DFI was significantly higher in subfertile men than in fertile controls (mean and median of 22.8% and 17.0% vs 8.4% and 5.0%; P < 0.001), as was the proportion of both moderate DFI (16.4% and 13.0% vs 6.4% and 4.0%; P = 0.001) and high DFI (6.2% and 6.1 vs 2.0% and 1.0%; P = 0.01). This difference remained significant when the control men were compared only with the subfertile men with successful paternity. There was no significant difference in DFI in the subfertile men when analysed by ICSI outcome (mean and median of 24.5% and 17.0% vs 22.3% and 21.0% for successful and unsuccessful cycles, respectively; P = 0.94). There was a positive statistically significant correlation (r = 0.37; P = 0.02) between the DFI and sperm morphology.

CONCLUSIONS

This study confirms a relationship between male subfertility and sperm DFI; we discuss the correct role for genetic testing of sperm in the evaluation of subfertile men. Although DNA fragmentation data might help to decide a suitable treatment, once it is decided to proceed with ICSI, DFI levels have no effect on the outcome.     

Evaluation of sperm DNA fragmentation index,Zinc concentration and seminal parameters from infertile men with varicocele

The aim of this study was to investigate the effect of varicocele on DNA fragmentation index (DFI), zinc concentration and seminal parameters in infertile patients. In this prospective study, 179 men with at least 1‐year history of infertility and varicocele were examined for semen quality at Hanoi Medical University Hospital (HMUH), Hanoi, Vietnam. In addition, an inverse correlation between zinc concentration and the degree of sperm DNA fragmentation in patients with clinical varicocele was found. The difference in mean values of sperm DNA fragmentation index in patients with various grades of varicoceles can be neglected, whereas most patients with varicocele of grades II and III had DFI >30%. Varicocele is associated with high levels of DNA damage in spermatozoa and reduced zinc levels that correlate with different grades of disease. Therefore, DNA fragmentation index and zinc concentration can be used as essential additional diagnostic test for patients with clinical varicocele. A study should be conducted to evaluate the benefits of zinc supplementation to improve seminal parameters in patients with varicocele.     

Evaluation of the sperm DNA fragmentation index in infertile Japanese men by in-house flow cytometric analysis

Semen analysis has long been used to evaluate male fertility.Recently,several sperm function tests have been developed.Of those,the sperm DNA fragmentation inde...     

精子染色质扩散实验检测精索静脉曲张及不明原因不育患者精子DNA碎片

目的了解精索静脉曲张(VC)及不明原因不育患者精子DNA碎片的发生比例。方法改进的精子染色质扩散(SCD)实验分析精子DNA碎片。检测VC不育患者39例,不明原因不育患者57例。以生育健康成年男性32例为对照组。结果VC不育患者SCD小光晕和无光晕精子(精子DNA碎片)比值平均为(36.6±18.9)%,VC不育组明显高于对照组(12.1±5.2)%(P<0.001),而大光晕和中光晕精子比值VC不育组明显低于对照组(P<0.01);不明原因不育患者精子DNA碎片比值平均为(26.8±10.2)%,与对照组[(12.1±5.2)%]比较有显著性差异(P<0.001)。结论SCD实验表明,VC及不明原因不育患者精子DNA碎片比值增高。