中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (29): 6243-6248.doi: 10.12307/2025.779

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

运动对抑郁大鼠小胶质细胞和星形胶质细胞激活及神经元凋亡的影响

杜  鹃1,张  毅1,郝泉水2   

  1. 1江汉大学体育学院,湖北省武汉市  430056;2长江大学附属黄冈市中心医院,湖北省黄冈市  438000

  • 收稿日期:2024-09-05 接受日期:2024-11-02 出版日期:2025-10-18 发布日期:2025-03-07
  • 通讯作者: 张毅,硕士,副教授,江汉大学体育学院,湖北省武汉市 430056
  • 作者简介:杜鹃,女,1984年生,湖北省宜昌市人,汉族,2012年武汉体育学院毕业,硕士,讲师,主要从事运动训练学的研究。
  • 基金资助:
    湖北省卫生健康委2021-2022年度科研项目(WJ2021M084),项目负责人:郝泉水

Effects of exercise on activation of microglia and astrocytes and neuronal apoptosis in depressed rats

Du Juan1, Zhang Yi1, Hao Quanshui2   

  1. 1School of Physical Education, Jianghan University, Wuhan 430056, Hubei Province, China; 2Huanggang Central Hospital Affiliated to Yangtze University, Huanggang 438000, Hubei Province, China
  • Received:2024-09-05 Accepted:2024-11-02 Online:2025-10-18 Published:2025-03-07
  • Contact: Zhang Yi, MS, Associate professor, School of Physical Education, Jianghan University, Wuhan 430056, Hubei Province, China
  • About author:Du Juan, MS, Lecturer, School of Physical Education, Jianghan University, Wuhan 430056, Hubei Province, China
  • Supported by:
    Hubei Provincial Health Commission 2021-2022 Annual Research Project, No. WJ2021M084 (to HQS) 

摘要:


文题释义:
环加氧酶2:是前列腺素E2合成的限速酶,在组织损伤、炎症等情况下表达增强。环加氧酶2可显著增强大鼠慢性应激引起的抑郁样行为,抑制环加氧酶2可以减少脑损伤和神经元死亡及大鼠的抑郁行为。目前,环加氧酶2抑制剂已表现出良好的抗抑郁作用。
小胶质细胞:是大脑中主要的驻留免疫细胞,在抑郁症中起着至关重要的作用,动物模型和临床抑郁症患者的小胶质细胞明显活化。小胶质细胞调节炎症、突触可塑性和神经网络的形成,所有这些都会影响抑郁症的发生发展。

背景:环加氧酶2可显著增强大鼠抑郁样行为,环加氧酶2抑制剂具有抗抑郁作用。运动可明显减少抑郁患者的抑郁样行为,然而,目前尚不清楚运动是否通过抑制环加氧酶2来发挥抗抑郁作用。
目的:旨在揭示运动对抑郁大鼠环加氧酶2表达、小胶质细胞和星形胶质细胞激活、氧化应激和神经元凋亡的影响,以及可能的分子机制。
方法:通过慢性不可预测的温和刺激诱导抑郁症大鼠模型,将建模成功的大鼠随机分为刺激组和转轮运动组,每组10只;另外选择10只正常大鼠作为对照组。对照组和刺激组大鼠不运动;转轮运动组大鼠进行强制转轮运动,共运动4周。通过蔗糖偏爱测试评价抑郁样行为,免疫荧光染色检测海马环加氧酶2表达,蛋白质印迹分析检测海马环加氧酶2、Iba-1、CD11b、CD45、胶质纤维酸性蛋白、Bcl-2、Bax和cleaved caspase-3蛋白表达,RT-PCR检测海马环加氧酶2 mRNA水平,使用试剂盒测定海马组织匀浆中相关抗氧化酶的活性。
结果与结论:与刺激组相比,转轮运动组的蔗糖消耗量增加,海马内的环加氧酶2表达降低,海马内的超氧化物歧化酶、过氧化氢酶和谷胱甘肽过氧化物酶水平增加,丙二醛水平降低,海马内的Iba1、CD11b和CD45蛋白表达降低,胶质纤维酸性蛋白水平降低,Bcl-2的蛋白表达升高,Bax和cleaved caspase-3蛋白表达降低(P < 0.05)。研究表明:转轮运动可通过抑制慢性不可预测温和刺激大鼠海马中环加氧酶2的表达来减少抑郁样行为,并通过抑制海马中小胶质细胞和星形胶质细胞激活、氧化应激和神经元凋亡来发挥抗抑郁作用。
https://orcid.org/0009-0009-5679-0666(杜鹃)

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

关键词: 抑郁, 转轮运动, CUMS, 环加氧酶2, 氧化应激, 神经元凋亡, 小胶质细胞, 星形胶质细胞, 工程化组织构建

Abstract: BACKGROUND: Cyclooxygenase-2 can significantly enhance depressive-like behavior in rats, and cyclooxygenase-2 inhibitors have antidepressant effects. Exercise can significantly reduce depressive-like behaviors in depressed patients. However, it is currently unclear whether exercise exerts an antidepressant effect by inhibiting cyclooxygenase-2.
OBJECTIVE: To reveal the effects of exercise on cyclooxygenase-2 expression, microglia and astrocyte activation, oxidative stress and neuronal apoptosis in depressed rats, as well as the possible molecular mechanisms. 
METHODS: The rat model of depression was induced by chronic unpredictable mild stimulation. After modeling, the chronic unpredictable mild stimulation rats were randomly divided into stimulation group and wheel running group, with 10 rats in each group. In addition, 10 normal rats were selected as the control group. The rats in the control group and stimulation group did not exercise. The rats in the wheel running group performed forced wheel running for a total of 4 weeks. Depressive-like behavior was evaluated by sucrose preference test. Hippocampal cyclooxygenase-2 expression was detected by immunofluorescence staining. The expression of cyclooxygenase-2, Iba-1, CD11b, CD45, glial fibrillary acid protein, Bcl-2, Bax, and cleaved caspase-3 proteins in the hippocampus was detected by western blot analysis. The cyclooxygenase-2 mRNA level in the hippocampus was detected by RT-PCR. The activities of antioxidant enzymes in hippocampal tissue homogenates were determined using kits.  
RESULTS AND CONCLUSION: Compared with stimulation group, sucrose consumption was increased; cyclooxygenase-2 expression in hippocampus was decreased; superoxide dismutase, catalase, and glutathione peroxidase levels in hippocampus were increased; malonaldehyde level was decreased; Iba1, CD11b, and CD45 protein expression levels in hippocampus were decreased, and glial fibrillary acid protein level in hippocampus was decreased. Bcl-2 protein expression levels in the hippocampus were increased, while Bax and cleaved caspase-3 levels were decreased in wheel running group (P < 0.05). This study showed that wheel running could reduce depressive-like behavior by inhibiting the expression of cyclooxygenase-2 in the hippocampus of chronic unpredictable mild stimulation rats. In addition, wheel running can exert antidepressant effects by inhibiting microglia and astrocyte activation, oxidative stress, and neuronal apoptosis in the hippocampus.

Key words: depression, wheel running, chronic unpredictable mild stimulation, cyclooxygenase-2, oxidative stress, neuronal apoptosis, microglia, astrocyte, engineered tissue construction

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