首都医科大学学报 ›› 2017, Vol. 38 ›› Issue (3): 348-351.doi: 10.3969/j.issn.1006-7795.2017.03.004

• 麻醉学与神经科学 • 上一篇    下一篇

七氟烷与高浓度氧对老年小鼠海马caspase-3的表达及认知功能的影响

陈玢1, 刘伟1, 史志国1, 刘涛1, 郑晖2   

  1. 1. 首都医科大学附属北京胸科医院麻醉科, 北京 101149;
    2. 国家癌症中心/中国医学科学院北京协和医学院肿瘤医院麻醉科, 北京 100021
  • 收稿日期:2017-03-20 出版日期:2017-05-21 发布日期:2017-06-14
  • 通讯作者: 郑晖 E-mail:chenghaocn@yahoo.com
  • 基金资助:
    国家自然科学基金(81371202)。

Impact of sevoflurane and high concentration of oxygen on expression of caspase-3 and cognition of aged mice

Chen Bin1, Liu Wei1, Shi Zhiguo1, Liu Tao1, Zheng Hui2   

  1. 1. Department of Anesthesiology, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China;
    2. Department of Anesthesiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
  • Received:2017-03-20 Online:2017-05-21 Published:2017-06-14
  • Supported by:
    This study was supported by National Natural Science Foundation of China(81371202).

摘要: 目的 探讨七氟烷与高浓度氧对老年小鼠海马半胱氨酸蛋白酶-3(caspase-3)的表达及认知功能的影响。方法 健康雄性C57/BL6老年小鼠(14月龄)33只,采用数字表法将其随机分为3组:高浓度氧组(HO组,n=11):吸100%(体积分数)氧4 h;高浓度氧+七氟烷组(HS组,n=11):吸100%(体积分数)氧+2.5%(体积分数)七氟烷4 h;对照组(Con组,n=11):吸空气4 h。24 h后采用Morris水迷宫法研究3组小鼠麻醉后连续5 d找到平台所用的时间(逃避潜伏期)和第5天去除平台后,90 s内穿过原平台的次数。利用蛋白质印记(Western blotting)法检测小鼠海马caspase-3的表达。结果 与Con组相比,HO组的caspase-3表达差异无统计学意义(P>0.05);HS组的穿越平台次数降低(P=0.023),caspase-3表达显著增加(P=0.036)。结论 吸入100%(体积分数)氧对老年小鼠认知功能无影响,2.5%(体积分数)七氟烷与100%(体积分数)氧同时吸入增加老年小鼠海马caspase-3的表达,与老年小鼠产生认知功能障碍有关。

关键词: 老年小鼠, 认知功能障碍, 七氟烷, 氧气, 半胱氨酸蛋白酶

Abstract: Objective To investigate the impact of sevoflurane and high concentration of oxygen on expression of caspase-3 and cognitive function of aged mice. Methods Thirty three healthy male C57/BL6 elderly mice (14 months) were randomly divided into three groups:group of high concentration of oxygen (HO group, n=11):inhaling 100% oxygen for 4 h; high concentration of oxygen + sevoflurane group (HS group, n=11):taking in 100% oxygen with 2.5% sevoflurane for 4 h; control group (Con group, n=11):taking in air for 4 h. Cognitive function in the elderly mice was tested in the Morris water maze. Western blotting is used to test the expression of caspase-3 in hippocampus. Results Compared with Group Con, Group HO saw no difference in numbers of crossing the platform and Caspase-3 expression. Group HS crossed the platform less (P=0.023),and the caspase-3 expression of the group increased significantly(P=0.036).Conclusion Inhaling 100% oxygen had no impact on cognitive function in the elderly mice;Inhaling 2.5% Sevoflurane with 100% oxygen could increase expression of caspase-3, and it had close relations with the cognitive dysfunction of the aged mice.

Key words: elderly mice, cognitive dysfunction, sevoflurane, oxygen, caspase

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