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  

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

作　　者：马欣然 刘欣昊 李宇佳 罗开亮 马书杰 胡军 Ma Xinran;Liu Xinhao;Li Yujia;Luo Kailiang;Ma Shujie;Hu Jun(School of Rehabilitation Science,Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China;Department of Rehabilitation,The First Affiliated Hospital of Fujian Medical University,Fuzhou 350005,Fujian Province,China;The Second Rehabilitation Hospital of Shanghai,Shanghai 200441,China)

机构地区：[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

出　　处：《中国组织工程研究》2024年第14期2227-2233,共7页Chinese Journal of Tissue Engineering Research

基　　金：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。

摘　　要：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。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,a

关 键 词：跑台运动 帕金森病 肠道菌群 16S rDNA 大鼠 

分 类 号：R446[医药卫生—诊断学] R318[医药卫生—临床医学] R496