有氧运动对慢性疲劳综合征建模大鼠海马ERK/CREB/BDNF信号通路的影响

被引:9
作者
李艳荣
机构
[1] 巢湖学院体育学院
关键词
慢性疲劳综合征; 有氧运动; 海马; 细胞外调节蛋白激酶; 环磷酸腺苷反应元件结合蛋白; 脑源性神经营养因子; 神经元可塑性;
D O I
10.14104/j.cnki.1006-2076.2020.02.013
中图分类号
G804.2 [运动生理学];
学科分类号
040211 [体育与运动心理学];
摘要
目的:探讨3周有氧运动对慢性疲劳综合征大鼠海马区神经元形态结构及ERK/CREB/BDNF信号通路的影响。方法:雄性54只SD大鼠,随机分为3周对照组(C组)27只、模型组(M组)27只,C组常规饲养,M组进行三周慢性疲劳综合症(CFS)建模。建模结束后,C组、M组随机各选取6只进行取材;剩余模型组大鼠随机分为模型对照组(MC组)、模型运动组(ME组);剩余对照组随机分为6周对照组(CC组)、单纯运动组(CE组)。采用力竭游泳、束缚、禁食禁水、睡眠剥夺4种应激因素建立CFS模型,采用无负重游泳进行有氧运动干预。采用HE染色切片观察各组大鼠海马区神经元形态结构,采用Western Blotting方法检测信号通路P-ERK、CREB、P-CREB、BDNF蛋白的表达。结果:1)M组大鼠一般状况有明显的CFS特征;2)与C组相比,M组大鼠海马CA1区细胞损伤不明显,CA3区、DG区细胞出现明显损伤; MC组大鼠海马CA1区存在细胞损伤现象,CA3区、DG区细胞损伤现象有所好转;ME组、CC组、CE组大鼠细胞形态结构正常;3)与C组相比,M组大鼠海马区P-ERK蛋白表达显著下降(P<0.05),CREB、BDNF蛋白表达非常显著性下降(P<0.01);P-CREB蛋白表达没有显著性差异(P>0.05);4)与CC组相比,CE组大鼠海马组织P-ERK、CREB、P-CREB、BDNF蛋白表达均非常显著性增加(P<0.01);MC组大鼠海马组织P-ERK、CREB蛋白表达均非常显著性增加(P<0.01),P-CREB、BDNF蛋白表达均非常显著性减小(P<0.01);与CE组相比,ME组大鼠海马组织P-ERK蛋白表达非常显著性增高(P<0.01),CREB、P-CREB、BDNF蛋白表达均非常显著性减少(P<0.01)。结论:慢性疲劳综合征引起大鼠海马神经元损伤可能与ERK/CREB/BDNF信号通路有直接关系;有氧运动可促进大鼠海马ERK/CREB/BDNF信号通路蛋白的表达进而修复海马神经元损伤。
引用
收藏
页码:97 / 105
页数:9
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