中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (19): 3067-3073.doi: 10.3969/j.issn.2095-4344.1252

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

不同负荷游泳运动对大鼠海马突触后致密区蛋白95、神经细胞黏附分子蛋白表达的影响

张业廷1,2,付  燕3,李  雪1,张  康4,袁琼嘉1   

  1. (1成都体育学院研究生院,四川省成都市  610041;2成都大学体育学院,四川省成都市  610106;3西南民族大学体育学院,四川省成都市  610041;4北京体育大学研究生院,北京市  100084)
  • 收稿日期:2019-01-17
  • 通讯作者: 袁琼嘉,博士,教授,成都体育学院研究生院,四川省成都市 610041
  • 作者简介:张业廷,男,1989年生,山东省肥城市人,汉族,成都体育学院在读博士,助教,主要从事运动康复与健康促进研究。
  • 基金资助:

    四川省科技计划项目(2018JY0587),项目负责人:付燕;成都体育学院科研创新团队建设计划项目,项目负责人:李雪

Effects of different loads of swimming on the expression of post-synaptic density-95 and neural cell adhesion molecule in the rat hippocampus

Zhang Yeting1, 2, Fu Yan3, Li Xue1, Zhang Kang4, Yuan Qiongjia1   

  1.  (1Postgraduate School of Chengdu Sport Institute, Chengdu 610041, Sichuan Province, China; 2College of Physical Education of Chengdu University, Chengdu 610106, Sichuan Province, China; 3College of Physical Education of Southwest Minzu University, Chengdu 610041, Sichuan Province, China; 4Postgraduate School of Beijing Sport University, Beijing 100084, China)
  • Received:2019-01-17
  • Contact: Yuan Qiongjia, PhD, Professor, Postgraduate School of Chengdu Sport Institute, Chengdu 610041, Sichuan Province, China
  • About author:Zhang Yeting, Doctoral candidate, Assistant lecturer, Postgraduate School of Chengdu Sport Institute, Chengdu 610041, Sichuan Province, China; College of Physical Education of Chengdu University, Chengdu 610106, Sichuan Province, China
  • Supported by:

    the Science and Technology Program of Sichuan Province, No. 2018JY0587 (to FY); the Research Innovation Team Construction Program of Chengdu Sport Institute (to LX)

摘要:

文章快速阅读:

文题释义:
突触可塑性:指的是突触连接强度可调节的特性,其形态和功能可发生较为持久改变的特性或现象。突触可塑性主要包括突触传递效能的改变与突触结构参数的变化。突触传递效能主要包括长时程增强与长时程抑制两种功能可塑性效应。突触结构参数主要包括突触致密物厚度、突触间隙、突触曲率以及突触活动区长度等。
学习记忆:学习是获得新信息的过程,其结果便是记忆。也就是说,在学习了某样东西后,记忆便形成了,这种学习也许会发生在信息的单次呈现后,也许是在信息的重复呈现后。记忆必须是能够在一段时间内维持的。

摘要
背景
:许多研究已经表明,中等负荷的有氧运动可以提高学习记忆能力。然而在现实生活中,过度负荷运动也是比较常见的锻炼形式,但是关于过度负荷运动对学习记忆能力影响的研究则较少。
目的:观察不同负荷游泳运动对大鼠空间学习记忆能力的影响及海马突触后致密区蛋白95、神经细胞黏附分子表达的变化,探讨不同负荷运动影响脑学习记忆能力的分子机制。
方法:2月龄雄性健康SD大鼠30只,体质量(300±20) g,购买自成都达硕科技公司。将SD大鼠随机分为3组(每组10只):对照组大鼠自然喂养8周;中等负荷运动组、过度负荷运动组大鼠分别进行为期8周的中等负荷游泳运动干预或过度负荷游泳运动干预。然后利用Morris水迷宫检测大鼠的空间学习记忆能力,并通过Real Time-PCR或Western Blot检测海马突触后致密区蛋白95、神经细胞黏附分子的表达。
结果与结论:①在Morris水迷宫实验定位航行训练期间各组大鼠逃避潜伏期均呈逐渐下降的趋势,在第3天,中等负荷运动组平均逃避潜伏期显著低于对照组及过度负荷运动组(P < 0.05),其余几天均无显著差异(P > 0.05);在定位航行实验中,中等负荷运动组穿越原平台所在区域的次数显著高于对照组及过度负荷运动组(P < 0.05,P < 0.01);②中等负荷运动组突触后致密区蛋白95 mRNA及蛋白表达量显著高于对照组(P < 0.05),过度负荷运动组突触后致密区蛋白95 mRNA表达量显著低于对照组及中等负荷运动组(P < 0.05);中等负荷运动组神经细胞黏附分子mRNA及蛋白表达量显著高于对照组(P < 0.05),过度负荷运动组神经细胞黏附分子蛋白表达量显著低于中等负荷运动组(P < 0.05),但与对照组无显著差异(P > 0.05);③由此可见,中等负荷游泳运动可以提高大鼠海马突触后致密区蛋白95、神经细胞黏附分子的表达及空间学习记忆能力;过度负荷游泳运动对突触后致密区蛋白95、神经细胞黏附分子的表达影响较小。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0002-5327-6014(张业廷)

关键词: 学习与记忆, 海马, 突触后致密区蛋白95, 神经细胞黏附分子, 中等负荷运动, 过度负荷运动, 游泳运动

Abstract:

BACKGROUND: Increasing evidence has shown that moderate-load aerobic exercise can improve learning and memory abilities. However, overloading exercise is also a common form of exercise. However, there are few studies on the effect of overload on learning and memory ability.
OBJECTIVE: To investigate the effects of different loads of swimming exercise on the spatial learning and memory abilities of rats and the changes in the expression of hippocampus post-synaptic density-95 and neural cell adhesion molecule, and to explore the molecular mechanism.
METHODS: Thirty male 2-month-old Sprague-Dawley rats, weighing (300±20) g (provided by Chengdu Dashuo Technology Co., Ltd.) were randomly divided into three groups (n=10/group): control group (normal feed for 8 weeks), moderate-load exercise group (moderate-load swimming exercise for 8 weeks), overload exercise group (overload swimming exercise for 8 weeks). The learning and memory abilities were detected by Morris Water Maze test. The expression levels of hippocampus post-synaptic density-95 and neural cell adhesion molecule were tested by real-time PCR and western blot assay.
RESULTS AND CONCLUSION: (1) In the process of navigation training, the escape latencies were gradually shortened. At 3 days, the average escape latency in the moderate-load exercise group was significantly lower than that in the control and overloading groups (P < 0.05), and there was no significant difference in the other days (P > 0.05). In the navigation experiment, the times of across the area of the original platform in the moderate-load exercise group was significantly higher than that in the control and overloading groups (P < 0.05, P < 0.01). (2) The expression levels of post-synaptic density-95 mRNA and protein in the moderate-load exercise group were significantly higher than those in the control and overload exercise groups (P < 0.05). The expression level of post-synaptic density-95 mRNA in the overload exercise group was significantly lower than that in the control and moderate-load exercise groups (P < 0.05). The expression levels of neural cell adhesion molecule mRNA and protein in the moderate-load exercise group were significantly higher than those in the control group (P < 0.05). The expression level of neural cell adhesion molecule protein in the overload exercise group was significantly lower than that in the moderate-load exercise group (P < 0.05), but there was no significant difference when compared with the control group (P > 0.05). (3) Therefore, moderate-load swimming can improve the expression of post-synaptic density-95 and neural cell adhesion molecule in the rat hippocampus, and improve the spatial learning and memory abilities. Overload swimming has little influence on post-synaptic density-95 and neural cell adhesion molecule expression.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: learning and memory, hippocampus, post-synaptic density-95, neural cell adhesion molecule, moderate-load exercise, overload exercise, swimming

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