实验动物与比较医学 ›› 2013, Vol. 33 ›› Issue (1): 7-11.DOI: 10.3969/j.issn.1674-5817.2013.01.002

• 论著 • 上一篇    下一篇

红海海绵素A对小鼠精子冷冻活力的影响

程芙蓉1, 杨世华2   

  1. 1.深圳市罗湖区人民医院,深圳518001;
    2.昆明理工大学 生命科学与技术学院, 昆明650500
  • 收稿日期:2012-06-07 出版日期:2013-02-25 发布日期:2013-02-25
  • 作者简介:程芙蓉(1982-), 女, 博士, 从事传染性疾病与生殖 疾病控制研究, E-mail: cheng820421@163.com
  • 基金资助:
    国家自然科学基金项目(31071279); 云南省科技创新人才计划项目(2011CI009)

Effect of Latrunculin A on Motility of Spermatozoa Cryopreservation in ICR Mouse

CHENG Fu-rong1, YANG Shi-hua2   

  1. 1. Shenzhen Louhu People’s Hospital, Shenzhen 518001, China;
    2. Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650093, China
  • Received:2012-06-07 Online:2013-02-25 Published:2013-02-25

摘要: 目的 通过建立最佳的冷冻降温速率,研究红海海绵素A(latrunculin A, LATA)对精子的冷冻保护作用。方法 用冷冻液平衡后的ICR小鼠附睾精子置于液氮面上方不同的位置,用快速 (-240℃/min)、中速(-109℃/min)、慢速(-41℃/min)和超慢速(-12℃/min)的降温速率分别冷冻5 或10 min后投入液氮冻存。结果 在液氮上方冷冻5 min或10 min对小鼠精子的复苏活力没有影响。而用超慢速冷冻速率冻存精子的复苏活力显著高于其他组,中速冷冻速率保存的精子的复苏活力在各实验组中最低。用0.5 µmol/L、1 µmol/L、2 µmol/L和4 µmol/L 的红海海绵素A处理小鼠精子后,再用超慢速冷冻速率保存,结果用0.5 µmol/L、1 µmol/L和2 µmol/L 的红海海绵素A处理的精子未能提高精子的复苏活力,而高浓度的红海海绵素A(4 µmol/L)反而降低了精子的复苏活力度。结论 红海海绵素A对精子的冷冻保护作用值得商榷。

关键词: 小鼠精子, 冷冻降温速率, 红海海绵素A, 活力

Abstract: Objective To evaluate the effect of latrunculin A on motility of spermatozoa combined with optimized cooling rate of cryopreservation. Methods ICR mouse epididymal spermatozoa balanced in freezing medium were frozen at fast (-240℃/min), medium (-109℃/min), slow (-41℃/min) and super slow (-12℃/min) cooling rate for 5 min or 10 min respectively, before being plunged into liquid nitrogen for storage. Results No difference of sperm motility was observed between spermatozoa frozen for 5 and 10 min above liquid nitrogen at each cooling rate. Spermatozoa cryopreserved at super slow and medium cooling rate showed highest and lowest post-thaw motility respectively. ICR mouse spermatozoa were treated with 0.5 µmol/L, 1 µmol/L, 2 µmol/L and 4 µmol/L Latrunculin A before freezing and then cryopreserved at super slow cooling rate. The result showed that treating mouse spermatozoa with 0.5 µmol/L, 1 µmol/L and 2 µmol/L of Latrunculin A could not improve the motility of spermatozoa. However, high level (4 µmol/L) of Latrunculin A showed detrimental effect on ICR mouse sperm motility. Conclusion Cryopreservation proficiency of Latrunculin A on sperm is open to discussion.

Key words: Mouse spermatozoa, Cooling rate, Latrunculin A, Motility

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