《中国康复理论与实践》 ›› 2017, Vol. 23 ›› Issue (3): 298-303.doi: 10.3969/j.issn.1006-9771.2017.03.010

• 基础研究 • 上一篇    下一篇

次声对大鼠海马区钙调依赖性蛋白激酶Ⅱ及Tau蛋白表达的影响

蔡丽1, 王晋2, 崔尧3, 4, 张鸽2, 武松艳1, 张文东1, 刘朝晖1   

  1. 1.第四军医大学唐都医院康复医学科,陕西西安市 710038;
    2.第四军医大学放射医学教研室,陕西西安市 710032;
    3.中国康复研究中心北京博爱医院,北京市 100068;
    4.首都医科大学康复医学院,北京市 100068。
  • 收稿日期:2016-10-26 出版日期:2017-03-05 发布日期:2017-03-31
  • 通讯作者: 刘朝晖(1962-),女,汉族,山西运城市人,博士,副主任医师,硕士研究生导师,主要研究方向:物理治疗的临床应用与机制研究。E-mail: 15829845741@163.com。
  • 作者简介:蔡丽(1987-),女,汉族,陕西商南县人,硕士研究生,治疗师,主要研究方向:言语认知功能障碍的治疗及其机制。
  • 基金资助:
    国家自然科学基金项目(No.31470825)

Effects of Infrasound on Expression of Calmodulin-dependent Protein Kinase II and Tau Protein in Hippocampus of Rats

CAI Li1, WANG Jin2, CUI Yao3, 4, ZHANG Ge2, WU Song-yan1, ZHANG Wen-dong1, LIU Zhao-hui1   

  1. 1. Department of Rehabilitation Medicine, Tangdu Hospital, the Fourth Military Medicine University, Xi'an, Shaanxi 710038, China;
    2. Section of Radiation Medicine Teaching & Research, the Fourth Military Medicine University, Xi'an, Shaanxi 710032, China;;
    3. Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing 100068, China;
    4. Capital Medical University School of Rehabilitation Medicine, Beijing 100068, China
  • Received:2016-10-26 Published:2017-03-05 Online:2017-03-31
  • Contact: Correspondence to LIU Zhao-hui. E-mail: 15829845741@163.com

摘要: 目的探讨8 Hz、130 dB次声对大鼠海马区钙调依赖性蛋白激酶Ⅱ(CaMKⅡ)及tau蛋白表达的影响。方法56只雄性Sprague-Dawley大鼠随机分为对照组(n=8)、1 d组(n=8)、7 d组(n=8)、14 d组(n=32)。14 d组再分为照射后1 h、6 h、24 h、48 h亚组,每亚组8只。对照组每天次声仓内无次声作用放置2 h,其余各组8 Hz、130 dB次声照射2 h。免疫组织化学、Western blotting和ELISA方法检测各组大鼠海马区磷酸化CaMKⅡ(pT286-CaMKⅡ)及tau蛋白表达。结果14 d组pT286-CaMKⅡ水平最高(F>14.912, P<0.001),tau蛋白表达最多(F>36.229, P<0.001),7 d组次之(P<0.05)。14 d组中,次声后1 h、6 h,tau蛋白表达最高,24 h有所恢复,但仍较对照组高(P<0.05)。结论8 Hz、130 dB次声作用后,大鼠海马区CaMKⅡ磷酸化水平和tau蛋白表达及磷酸化水平增高,可能参与次声致大鼠学习记忆功能受损。

关键词: 次声, 钙调依赖性蛋白激酶Ⅱ, tau蛋白, 学习记忆, 海马, 大鼠

Abstract: ObjectiveTo study the effect of infrasound on expression of calmodulin-dependent protein kinase II (CaMKII) and tau protein in hippocampus of rats. MethodsFifty-six male Sprague-Dawley rats were randomized into control group (n=8), 1-day group (n=8), 7-day group (n=8) and 14-day group (n=32), and the 14-day group was subgrouped as 1-hour, 6-hour, 24-hour, 48-hour subgroups, naming after the time after infrasound exposure, 8 in each subgroup. All the test groups were put in an infrasound field with 8 Hz, 130 dB for 2 hours daily, while the control group was put in the infrasound instrument without infrasound exposure for 2 hours daily. The expression of pT286-CaMKII and tau protein in hippocampus was detected with immunohistochemisty, Western blotting and enzyme-linked immunoabsorbent assay. ResultsThe expression of pT286-CaMKII was the most in 14-day group (F>14.912, P<0.001), as well as the expression of tau protein (F>36.229, P<0.001), and secondary in 7-day group (P<0.05). For 14-day group, the expression of tau protein was the most in 1-hour and 6-hour subgroups, and dropped down in 24-hour subgroup, although more than that in the control group (P<0.05). ConclusionExposure of 8 Hz, 130 dB infrasound may induce phosphorylation of CaMKII and tau protein, and the expression of tau protein in hippocampal cells in rat, which may disturb their learning and memory function.

Key words: infrasound, calmodulin-dependent protein kinase II, tau protein, learning and memory, hippocampus, rats

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