天然产物研究与开发 ›› 2021, Vol. 33 ›› Issue (6): 1013-1019.doi: 10.16333/j.1001-6880.2021.6.016

• 开发研究 • 上一篇    下一篇

淫羊藿多糖对弱精症精子冷冻保存效果的影响

周岳1,2#,颜贝1,2#,田稼1,2,贾邵彤3,裴承斌1,2,王红红1,2,王红燕1,2*,马良宏1,2*   

  1. 1宁夏医科大学总医院 宁夏人类精子库;2宁夏医科大学生育力保持教育部重点实验室,银川 750001;3宁夏医科大学总医院生殖中心,银川 750004

  • 出版日期:2021-06-28 发布日期:2021-07-02
  • 基金资助:
    2017年自治区科技创新领军人才培养经费(KJT2017008);宁夏回族自治区重点研发一般项目(2019BEG03002);宁夏回族自治区重点研发项目(2020BFH02002)

Effects of Epimedium polysaccharide on cryopreservation of asthenospermia sperm

ZHOU Yue1,2#,YAN Bei1,2#,TIAN Jia1,2,JIA Shao-tong3,PEI Cheng-bin1,2,WANG Hong-hong1,2,WANG Hong-yan1,2*,MA Liang-hong1,2*   

  1. 1General Hospital of Ningxia Medical University Human Sperm Bank of Ningxia;2Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education,Ningxia Medical University,Yinchuan 750001,China; 3Reproductive Center of General Hospital of Ningxia Medical University,Yinchuan 750004,China

  • Online:2021-06-28 Published:2021-07-02

摘要: 常用的冷冻保护剂对于弱精症精子冻融效果欠佳,本实验通过在人精子冷冻保护液中添加淫羊藿多糖(EPS),研究其对冻融过程中精子活力及精子功能的影响。选择弱精症精液15例,液化后的精液样本分别与甘油-卵黄-柠檬酸盐(GEYC)冷冻保护液或含有EPS冷冻保护液混匀冷冻。检测其精子的活力、存活率以及精子形态、丙二醛(MDA)以及活性氧(ROS)的含量,精子核碎裂指数(DFI),精子顶体反应率(AR),并通过透射电镜观察精子微观结构的变化。添加EPS后精子MDA和ROS水平明显降低,含有3 mg/mL EPS的冷冻组抗氧化性明显优于其他组(P<0.05);含有EPS的冷冻组复苏后的存活率以及精子头部正常形态率都明显高于未添加组,但是两组间的精子前向运动PR无显著差异;此外,添加EPS的冷冻组精子DFI下降显著,AR明显升高;电镜观察精子头部显微结构显示,添加EPS组的精子在质膜以及顶体膜完整性上明显优于未添加组。结果提示,在精液冷冻保护液中添加EPS可降低精子活性氧的水平,保护精子顶体结构和功能,从而改善解冻后精子顶体功能和精子核的完整性。 


关键词: 淫羊藿多糖, 精子冷冻, 氧化应激, 顶体结构, 顶体反应

Abstract:

The commonly used cryoprotectants have poor effect on sperm freezing and thawing of asthenospermia.In this experiment,the Epimedium polysaccharide (EPS) was added to the human sperm cryoprotection solution to study its effect on the sperm motility and sperm function influences.15 cases of asthenospermia semen were selected.The liquefied semen samples were mixed with glycerin yolk citrate (GEYC) cryoprotectant or EPS cryoprotectant respectively.The sperm viability,survival rate,morphology,MDA,ROS,DFI and AR were measured,and the changes of sperm microstructure were observed by transmission electron microscopy.After adding EPS,the level of MDA and ROS in spermatozoa decreased significantly,and the antioxidant activity of frozen group containing 3 mg/mL EPS was better than that of other groups(P<0.05);The survival rate and normal morphology rate of sperm head in the frozen group with EPS were significantly higher than those in the control group,but there was no significant difference in the PR of sperm forward movement between the two groups.In addition,the DFI and AR of sperm in the frozen group added EPS decreased significantly,and the ultrastructure of sperm head showed that the integrity of plasma membrane and acrosome membrane of sperm in the EPS group was significantly better than that in the control group.The results showed that adding EPS to semen cryoprotectant could reduce the level of sperm ROS,protect the structure and function of sperm acrosome,and improve the acrosome function and the integrity of sperm nucleus after thawing.

Key words: Epimedium polysaccharide, sperm freezing, oxidative stress, acrosome structure, acrosome reaction

中图分类号:  R321.1