中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (18): 3848-3855.doi: 10.12307/2025.640

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

跑台运动对去卵巢应激大鼠海马自噬诱导细胞凋亡的影响

宋艳丽1,张  熙2,郭杨博1,凌小妹1,李林海1,杨子欣3,苏晓云4,崔建梅1   

  1. 1中北大学体育学院,山西省太原市  030051;2山西工程科技职业大学校医院,山西省太原市  030606;3山西大学继续教育学院,山西省太原市  030006;4山西医科大学汾阳学院,山西省汾阳市  032200


  • 收稿日期:2024-05-22 接受日期:2024-07-20 出版日期:2025-06-28 发布日期:2024-11-28
  • 通讯作者: 崔建梅,硕士,副教授,中北大学体育学院,山西省太原市 030051
  • 作者简介:宋艳丽,女,1994年生,汉族,中北大学在读硕士,初级康复治疗师,主要从事运动与慢性病方面的研究。
  • 基金资助:
    山西省自然科学基金项目(20210302123060),项目负责人:崔建梅;山西省哲学社会科学规划课题(2023YY170),项目负责人:崔建梅;中北大学研究生科技立项(20231955),项目负责人:宋艳丽;2024年山西研究生教育创新计划项目(2024SJ283),项目负责人:郭杨博

Effects of treadmill exercise on hippocampal autophagy-induced apoptosis in ovariectomized stressed rats 

Song Yanli1, Zhang Xi2, Guo Yangbo1, Ling Xiaomei1, Li Linhai1, Yang Zixin3, Su Xiaoyun4, Cui Jianmei1   

  1. 1School of Physical Education, North University of China, Taiyuan 030051, Shanxi Province, China; 2School Hospital, Shanxi Vocational University of Engineering Science and Technology, Taiyuan 030606, Shanxi Province, China; 3School of Continuing Education, Shanxi University, Taiyuan 30006, Shanxi Province, China; 4Fenyang College, Shanxi Medical University, Fenyang 032200, Shanxi Province, China
  • Received:2024-05-22 Accepted:2024-07-20 Online:2025-06-28 Published:2024-11-28
  • Contact: Cui Jianmei, MS, Associate professor, School of Physical Education, North University of China, Taiyuan 030051, Shanxi Province, China
  • About author:Song Yanli, Master candidate, Rehabilitative therapist, School of Physical Education, North University of China, Taiyuan 030051, Shanxi Province, China
  • Supported by:
    Natural Science Foundation of Shanxi Province, No. 20210302123060 (to CJM); Shanxi Philosophy and Social Science Planning Project, No. 2023YY170 (to CJM); Graduate Student Science and Technology Project of North University of China, No. 20231955 (to SYL); Shanxi Province Postgraduate Education Innovation Plan in 2024, No, 2024SJ283 (to GYB) 

摘要:


文题释义:
围绝经期抑郁症:表现为情绪低落、焦虑、失眠等症状,常发生在女性绝经前后。这一时期的激素变化可能影响大脑,导致认知功能下降、学习记忆能力受损,严重时可影响日常生活和工作表现。
自噬:是细胞的一种内在清理机制,通过这种机制,细胞可以分解并回收其内部损坏的细胞器、异常聚集蛋白和其他分子,以维持细胞的正常功能和生存。当自噬过程受到干扰时,可能会导致细胞功能紊乱和疾病的发生。因此,自噬的调控及其在疾病中的作用也是生物医学研究的热点领域。

背景:围绝经期抑郁症大鼠海马区细胞凋亡与自噬失衡,与认知功能下降密切相关,有氧运动能否通过促进海马自噬降低细胞凋亡从而改善围绝经期抑郁症大鼠的学习记忆能力目前尚不清楚。
目的:探讨4周中等强度跑台训练改善去卵巢结合慢性应激大鼠学习记忆能力的可能机制。
方法:40只SD大鼠随机分为假手术组、去卵巢组、去卵巢应激组和去卵巢应激运动组,每组10只。除假手术组大鼠外,其余3组大鼠摘除卵巢建立围绝经期模型,后2组再运用慢性不可预测性应激构建抑郁症模型,造模后去卵巢应激运动组大鼠接受4周中等强度跑台运动。在运动及应激结束后采用悬尾实验及糖水偏爱实验测试大鼠抑郁样行为,采用八臂迷宫实验测试大鼠学习记忆行为,Western blot检测大鼠海马中AMPK、mTOR、ULK1和凋亡因子Caspase-3及自噬标志物LC-3Ⅱ、Beclin-1的蛋白表达。
结果与结论:①与假手术组相比,去卵巢组及去卵巢应激组大鼠悬尾实验中静止时间延长,糖水偏爱实验中糖水摄入量及糖水偏爱率下降;②与假手术组相比,去卵巢组大鼠工作记忆错误次数、参考记忆错误次数和完成时间均显著增加,去卵巢应激组上述指标增加更显著;③与去卵巢应激组相比,去卵巢应激运动组大鼠工作记忆错误次数、参考记忆错误次数和完成时间均显著减少;④与假手术组相比,去卵巢组及去卵巢应激组大鼠海马组织中凋亡因子Caspase-3蛋白表达显著升高,自噬相关因子Beclin-1和LC3Ⅱ蛋白表达显著降低,AMPK和ULK1蛋白表达显著降低,而mTOR蛋白表达升高,去卵巢应激组上述指标变化更为显著;⑤与去卵巢应激组相比,去卵巢应激运动组大鼠海马组织中凋亡因子Caspase-3蛋白表达显著降低,自噬相关因子Beclin-1和LC3Ⅱ蛋白表达显著升高,AMPK和ULK1蛋白表达显著升高,mTOR蛋白表达显著降低。结果表明,4周中等强度跑台运动可能通过AMPK/mTOR/ULK1自噬信号通路促进细胞自噬,减少细胞凋亡,进而增强去卵巢抑郁模型大鼠的学习记忆能力。
https://orcid.org/0009-0005-1072-1738(宋艳丽)

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: 跑台运动, 围绝经期抑郁症, 去卵巢, 抑郁, 学习, 记忆, 自噬, 凋亡

Abstract: BACKGROUND: Apoptosis and autophagy imbalance in the hippocampal region of perimenopausal depressed rats are closely related to cognitive decline. Whether aerobic exercise can reduce apoptosis by promoting hippocampal autophagy and thus improve the learning and memory abilities of perimenopausal depressed rats is not clear.
OBJECTIVE: To investigate the possible mechanism by which 4-week moderate-intensity treadmill exercise improves learning memory ability in ovariectomized stressed rats. 
METHODS: Forty Sprague-Dawely rats were randomly divided into four groups, namely, sham operation group (n=10), ovariectomized group (n=10), ovariectomized stress group (n=10) and ovariectomized stress exercise group (n=10). Except for the sham operation group, the ovaries were removed in the other three groups to establish a perimenopausal rat model, and then a depressed rat model was established by chronic unpredictable stress in the latter two groups. The rats in the ovariectomized stress exercise group underwent a 4-week moderate-intensity treadmill exercise. Tail suspension test and sucrose preference test were performed to text depression-like behaviors in rats after exercise and stress. The eight-arm maze experiment was used to test the learning and memory behaviors of rats after exercise and stress. Western blot was used to detect the protein levels of AMP-activated protein kinase/UNC-51 like autophagy activating kinase 1/mammalian target of rapamycin (AMPK/mTOR/ULK1), hippocampus apoptotic factor Caspase-3 and the protein expression of autophagy markers LC-3II/Beclin-1 in the hippocampus. 
RESULTS AND CONCLUSION: (1) Compared with the sham operation group, rats in the ovariectomized and ovariectomized stress groups had prolonged resting time in the tail suspension test and decreased sugar-water intake and sugar-water preference in the sucrose preference test. (2) Ovary removal reduced the learning memory capacity of rats, as evidenced behaviorally by a significant increase in the number of working memory errors, the number of reference memory errors, and the completion time, and an even more pronounced increase in the above measures in the ovariectomized stress group. (3) Compared with the ovariectomized group, there was a significant reduction in the number of working memory errors, the number of reference memory errors, and the completion time in the ovariectomized stress group. (4) Compared with the sham operation group, in the ovariectomized and ovariectomized stress groups, the expression of hippocampal apoptotic factor Caspase 3 protein was significantly elevated, the expression of autophagy-related factors proteins Beclin-1 and LC3II, as well as the protein expression of AMPK and ULK1, was decreased, whereas the expression of mTOR protein was elevated. Changes in the above indicators were more significant in the ovariectomized stress group. (5) Compared with the ovariectomized stress group, in the ovariectomized stress exercise group, the protein expression of Caspase 3 was significantly decreased, the protein expression of Beclin-1 and LC3II was significantly increased, the protein expression of AMPK and ULK1 was significantly increased, and the protein expression of mTOR was significantly reduced. To conclude, 4-week moderate-intensity treadmill exercise may promote cellular autophagy and reduce apoptosis through the AMPK/mTOR/ULK1 autophagy signaling pathway, thereby enhancing the learning and memory capacity of rats with ovariectomized depression.

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: treadmill exercise, perimenopausal depression, ovariectomized, depression, learning, memory, autophagy, apoptosis


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