中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (14): 2227-2233.doi: 10.12307/2024.223

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

跑台运动对帕金森病模型大鼠肠道菌群结构及多样性的影响

马欣然1,刘欣昊1,李宇佳1,罗开亮2,马书杰3,胡  军1,3   

  1. 1上海中医药大学康复医学院,上海市  201203;2 福建医科大学附属第一医院康复医学科,福建省福州市  350005;3上海市第二康复医院,上海市  200441
  • 收稿日期:2023-01-19 接受日期:2023-03-13 出版日期:2024-05-18 发布日期:2023-07-28
  • 通讯作者: 胡军,博士,主任医师,副教授,上海中医药大学康复医学院,上海市 201203;上海市第二康复医院,上海市 200441
  • 作者简介:马欣然,女,1998年生,浙江省余姚市人,汉族,在读硕士,主要从事老年病与运动系统疾病的康复研究。
  • 基金资助:
    国家自然科学青年基金项目(81603713),项目负责人:马书杰;上海市卫生健康委员会科研基金项目(202040485),项目负责人:胡军;上海市宝山区科学技术基金项目(20-E-43),项目负责人:马书杰

Effect of treadmill exercise on the structure and diversity of intestinal microflora in rats with Parkinson’s disease

Ma Xinran1, Liu Xinhao1, Li Yujia1, Luo Kailiang2, Ma Shujie3, Hu Jun1, 3   

  1. 1School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; 2Department of Rehabilitation, The First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, Fujian Province, China; 3The Second Rehabilitation Hospital of Shanghai, Shanghai 200441, China
  • Received:2023-01-19 Accepted:2023-03-13 Online:2024-05-18 Published:2023-07-28
  • Contact: Hu Jun, MD, Chief physician, Associate professor, School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; The Second Rehabilitation Hospital of Shanghai, Shanghai 200441, China
  • About author:Ma Xinran, Master candidate, School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • Supported by:
    National Natural Science Foundation of China (Youth Project), No. 81603713 (to MSJ); Scientific Research Fund Project of Shanghai Municipal Health Commission, No. 202040485 (to HJ); Shanghai Baoshan District Science and Technology Fund Project, No. 20-E-43 (to MSJ)

摘要:


文题释义:

16S rDNA:是细菌分类学研究中最常用的“分子钟”,其序列包含9个可变区(Variable region)和10个保守区(Constant region)。可变区因细菌而异,且变异程度与细菌的系统发育密切相关。通过检测16S rDNA的序列变异和丰度,可以了解环境样品中群落多样性信息。基于16S rDNA的分析在微生物分类鉴定、微生态研究等方面起到重要作用。
肠道菌群:是存在于人体肠道内的所有微生物的统称,对宿主免疫系统有重要意义。可能通过促进神经炎性反应、干扰神经递质、紊乱宿主免疫反应及影响微生物-肠-脑轴等,加速帕金森病的发生发展。跑台运动对于帕金森病所导致的肠道微生物失衡具有显著调节作用,可缓解与菌群相关的疾病症状。


背景:运动对于肠道菌群失调具有调节作用,能有效保护有益菌群,改善肠道环境;但跑台运动对帕金森病肠道微生物群落结构及多样性的影响及具体作用机制尚不明确。

目的:利用16S rDNA技术分析跑台运动对帕金森病模型大鼠肠道菌群群落结构及多样性的影响,并探讨非药物跑台运动改善帕金森病的作用机制。
方法:18只SD大鼠随机选取12只,利用单侧黑质2点法脑注射6-羟基多巴胺诱导建立帕金森病大鼠模型;剩余6只为假手术组,采用相同定位及注射方式注射同等剂量含0.2%抗坏血酸的生理盐水。造模成功的12只帕金森病模型大鼠随机分为帕金森病模型组和跑台运动组,每组6只。跑台运动组进行中低强度跑台运动干预(10 m/min,30 min/d,5 d/周),连续干预4周。在最后 1 次跑台运动结束后24 h取大鼠新鲜粪便并置于液氮冻存,采用16S rDNA测序技术分析大鼠粪便菌群结构的变化。

结果与结论:①跑台运动可明显改善帕金森病模型大鼠的行为学及黑质酪氨酸羟化酶阳性细胞表达,缓解由帕金森病引起的肠道微生物群落结构及多样性的变化,增加大鼠操作分类单位(OTUs)数量,调节Alpha及Beta多样性;②在肠道菌群门和属水平,帕金森病模型组中Firmicutes(厚壁菌门)/Bacteroidetes(拟杆菌门)丰度比值较假手术组减少,而Prevotella(普雷沃氏菌属)、Bacteroides(拟杆菌属)、Clostridium_XlV(梭菌属)等有益菌经跑台运动后有明显上升;③结果提示:跑台运动对于帕金森病所导致的行为学异常、多巴胺能神经元的毒性损伤及肠道微生物失衡具有显著调节作用,可缓解与菌群相关的疾病症状,对帕金森病改善具有积极作用。 

https://orcid.org/0000-0002-0985-1261(马欣然)

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, 帕金森病, 肠道菌群, 16S rDNA, 大鼠

Abstract: BACKGROUND: Exercise has a regulatory effect on intestinal flora dysbiosis, which can effectively protect the beneficial flora and improve the intestinal environment. However, the effect of treadmill exercise on the structure and diversity of intestinal microbial community in Parkinson’s disease and the specific mechanism are not clear.
Objective: Using 16S rDNA technique to analyze the effect of treadmill exercise on the structure and diversity of the intestinal flora of rats with Parkinson’s disease, and to investigate the mechanism of non-pharmacological treadmill exercise to improve Parkinson’s disease.
METHODS: Twelve of the 18 Sprague-Dawley rats were randomly selected to make animal models of Parkinson’s disease using unilateral 2-point nigrostriatal injection of 6-hydroxydopamine. The remaining six rats were used as sham-operation group, which were injected with the same dose of saline containing 0.2% ascorbic acid using the same positioning and injection method. After successful modeling, 12 rats with Parkinson’s disease were randomly divided into model group and treadmill exercise group (n=6 per group). The treadmill exercise group was subjected to a middle and low intensity tread mill exercise, 10 m/min, 30 minutes per day, 5 days per week for 4 weeks. Fresh feces were collected and stored in liquid nitrogen 24 hour after the last exercise session, and the changes in fecal flora were analyzed by 16S rDNA sequencing technique.
Results and conclusion: Treadmill exercise significantly improved behavior and nigrostriatal tyrosine hydroxylase-positive cell expression in rats with Parkinson’s disease model and alleviated changes in the structure and diversity of the gut microbial community caused by Parkinson’s disease, increased the number of operational taxonomic units and modulated Alpha and Beta diversity in rats. At the phylum and genus levels, the abundance ratio of Firmicutes/Bacteroidetes in the model group decreased compared with the sham-operated group, while beneficial bacteria such as Prevotella, Bacteroides, and Clostridium_XlV increased significantly after treadmill exercise. To conclude, treadmill exercise has a significant modulating effect on behavioral abnormalities, toxic damage to dopaminergic neurons and gut microbial imbalance caused by Parkinson’s disease, alleviates the symptoms of flora-related diseases, and has a positive effect on the improvement of Parkinson’s disease.

Key words: treadmill exercise, Parkinson’s disease, intestinal flora, 16S rDNA, rat

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