| 1 | 左卡尼汀联合辅酶Q10治疗特发性少、弱精子症临床疗效评估:一项双盲、随机对照研究显示文摘目的:探讨左卡尼汀(LC)联合辅酶Q10(Co Q10)治疗特发性少、弱精子症(i OAT)的临床疗效。方法:将262例i OAT患者按照Excel软件随机数字排序分为4组,LC组:62例,口服左卡尼汀口服溶液10 ml/次,2次/d;Co Q10组:63例,口服Co Q10片剂,20 mg/次,3次/d;联合用药组:63例,按照上述剂量联合服用LC和Co Q10;对照组组:74例,服用不含抗氧化作用的安慰剂(维生素B1)。治疗3个月后比较各组治疗前、后精子浓度、活动率、前向运动精子百分率、DNA碎片百分率、顶体反应发生率及妊娠结局。结果:联合用药组的活动率及前向运动精子百分率均显著高于其他各组及自身治疗前(P<0.05);精子DNA碎片百分率则显著低于对照组和自身治疗前(P<0.05);临床妊娠率显著高于对照组(30.0%vs 6.8%,P<0.008)。各组间的精子顶体发生率及流产率无统计学差异(P>0.05)。结论:LC联合Co Q10可显著提高i OAT患者的精子质量,并能改善i OAT患者的临床结局。 | 程晋宝 朱杰 倪丰 姜宏 | 2018 | 中华男科学杂志2018，24，1： | 12 |
| 3 | Supplementation with L-Carnitine Rescues Sperm Epigenetic Changes in Asthenospermic Male Semen with Altered Acetyl-L-Carnitine Levels显示文摘Objective:To investigate the relationship between the concentration of L-carnitine in semen and sperm parameters and investigate the epigenetic profile in sperm cell after L-carnitine usage.Methods:From February 2017 to February 2018,46 semen samples from asthenospermic males and 41 semen samples from healthy donors were acquired.Motility parameters were assessed using computer-assisted sperm analysis(CASA,n=78)and the DNA fragmentation index(DFI)was evaluated through flow cytometry(n=86),%DFI=%cells outside main population.Other oxidative stress markers,such as reactive oxygen species(ROS)levels(n=86)and the mitochondria DNA copy numbers,were detected(n=78).The concentration of L-carnitine and acetyl-L-carnitine was detected(n=82),and methylation was analyzed(n=30).After that,we collected 13 fresh semen samples from asthenospermic males and 23 fresh semen samples from healthy donors.These samples were used in a freeze-thaw model that was used to determine whether adding L-carnitine could change sperm progressive motility(n=23),apoptosis index(n=9),and methylation analysis(n=7).In total,we have done 13 asthenospermia samples for Western blot,and except for the poor Western result,we analyzed 6 samples for H3K9ac detection,7 samples for H3K9m3 and H3K27m3 detection,and immunofluorescence(n=3).Finally,we had recruited 30 volunteers,and they were given oral administration of L-carnitine for 3 months and then collected semen samples at different time points for methylation analysis.Results:The concentration of acetyl-L-carnitine is negatively correlated with the%DFI value(r^2=0.1090;P=0.0026),and the concentration of acetyl-L-carnitine is positively correlated with sperm forward motility(r^2=0.0543;P=0.0458)and ROS(r^2=0.1854;P<0.0001),and the acetyl-L-carnitine level is negatively correlated with%DFI in asthenospermia(r^2=0.1701;P=0.0066),and the level of acetyl-L-carnitine in asthenospermic semen is significantly lower than the normal group(P=0.0419).In addition,this study indicates that adding L-carnitine significantly improved sperm motility(P=0.0325)and reduced sperm apoptosis(P=0.0032).Importantly,Western blotting(P=0.0429)and immunofluorescence staining results showed that the addition of L-carnitine reduced H3K9Me3 methylation level in sperm,respectively.Furthermore,semen samples from asthenospermic patients had reduced methylation levels in a specific region(16^thP=0.0003;17^thP=0.0016)of the brain-derived neurotrophic factor(BDNF)promoter.The 16^th methylation decreased with age(r^2=0.1564;P=0.0306),and the 17^th methylation was decreased after treatment with L-carnitine for 28 days(P=0.0341).Conclusion:L-carnitine can reduce the%DFI and also affect the methylation of the histone modification marker in sperm as a possible epigenetic regulator. | Xiao-Hui Jiang Chuan Jiang Lin Yu Xiao-Liang Li Tao Zuo Pei-Fei Gu Fu-Ping Li Wen-Ming Xu | 2020 | Reproductive and Developmental Medicine2020，4，3： | 0 |
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