理筋手法减轻兔损伤骨骼肌纤维化的作用机制  

Lijin manipulation alleviates fibrosis of injured skeletal muscle in rabbits

作　　者：李开颖 魏晓歌 赵振宁 宋斐 杨楠 王燕 穆静[1] 马惠昇[1,2,3] Li Kaiying;Wei Xiaoge;Zhao Zhenning;Song Fei;Yang Nan;Wang Yan;Mu Jing;Ma Huisheng(School of Traditional Chinese Medicine,Ningxia Medical University,Yinchuan 750004,Ningxia Hui Autonomous Region,China;Key Laboratory of Ningxia Ethnomedicine Modernization,Ministry of Education,Ningxia Medical University,Yinchuan 750004,Ningxia Hui Autonomous Region,China;Ningxia Regional Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Regional High Incidence Disease,Yinchuan 750004,Ningxia Hui Autonomous Region,China)

机构地区：[1]宁夏医科大学中医学院,宁夏回族自治区银川市750004 [2]宁夏医科大学宁夏少数民族医药现代化教育部重点实验室,宁夏回族自治区银川市750004 [3]宁夏区域高发病中西医结合防治研究重点实验室,宁夏回族自治区银川市750004

出　　处：《中国组织工程研究》2025年第14期2914-2921,共8页Chinese Journal of Tissue Engineering Research

基　　金：国家自然科学基金项目(82160944),项目负责人:马惠昇。

摘　　要：背景:理筋手法能够减少纤维化瘢痕增生,促进骨骼肌修复。但不恰当的激活Wnt/β-catenin信号通路,能加剧损伤骨骼肌纤维化,对骨骼肌修复过程产生不利影响。开展理筋手法对Wnt/β-catenin信号通路的调控作用研究,有利于阐述理筋手法减少纤维化瘢痕增生、促进骨骼肌损伤修复的相关机制。目的:探讨理筋手法促进兔骨骼肌损伤修复的作用机制。方法:45只普通级健康成年日本大耳兔随机分为空白组、模型组和理筋组,每组15只。模型组和理筋组均进行腓肠肌打击造模,理筋组于造模后第3天开始进行理筋手法治疗,1次/d,15 min/次。各组在造模后第7,14,21天分别取5只进行取材。苏木精-伊红染色观察腓肠肌一般形态结构,Masson染色观察腓肠肌胶原纤维含量,Western blot检测腓肠肌Wnt3a、β-catenin、GSK3β、p-GSK3β、TCF、Ⅰ型胶原蛋白、Ⅲ型胶原蛋白表达,RT-PCR检测腓肠肌Wnt3a、β-catenin、TCF mRNA表达,免疫荧光法检测腓肠肌β-catenin的表达,免疫组化法检测腓肠肌Ⅰ型胶原蛋白、Ⅲ型胶原蛋白的表达。结果与结论:①苏木精-伊红染色及Masson染色结果显示:与模型组比较,理筋组各观察点炎性细胞浸润减少,胶原纤维量减少(P<0.001),肌纤维逐渐愈合;②Western blot结果显示:与模型组比较,理筋组各观察点Wnt3a、β-catenin、TCF、Ⅰ型胶原蛋白、Ⅲ型胶原蛋白的蛋白表达量均显著降低(P<0.05),而p-GSK3β/GSK3β比值较模型组则明显升高(P<0.05);③RT-PCR结果显示:与模型组比较,理筋组各观察点Wnt3a、β-catenin、TCF的mRNA表达量均显著降低(P<0.001);④免疫荧光结果显示:与模型组比较,理筋组各观察点β-catenin核表达荧光强度明显降低,且逐渐与空白组相近(P<0.001);⑤免疫组化结果显示:理筋组各观察点Ⅰ型胶原蛋白、Ⅲ型胶原蛋白的表达量相较于模型组均显著降低(P<0.01)。结果表明:理筋手法能够抑制Wnt/β-catenBACKGROUND:Lijin manipulation can reduce fibrosis scar hyperplasia and promote skeletal muscle repair.However,improper activation of the Wnt/β-catenin signaling pathway can aggravate the fibrosis of injured skeletal muscle and adversely affect the repair process of skeletal muscle.To study the regulatory effect of Lijin manipulation on the Wnt/β-catenin signaling pathway is conducive to elucidate the related mechanisms of Lijin manipulation in reducing fibrosis scar hyperplasia and promoting skeletal muscle injury repair.OBJECTIVE:To explore the mechanism of Lijin manipulation in promoting the repair of skeletal muscle injury in rabbits.METHODS:Forty-five healthy adult Japanese white rabbits were randomly divided into blank group,model group and Lijin group with 15 rabbits in each group.Gastrocnemius muscle percussion modeling was performed in both model group and Lijin group.Lijin manipulation was performed in the Lijin group on the 3rd day after modeling,once a day,15 minutes once.Five animals in each group were selected and killed on the 7th,14th and 21st days after modeling.The general morphological structure of gastrocnemius was observed by hematoxylin-eosin staining and the content of collagen fiber was observed by Masson staining.Western blot was used to detect the protein expression of Wnt3a,β-catenin,GSK3β,p-GSK3β,TCF,type I collagen and type III collagen in gastrocnemius muscle,and RT-PCR was used to detect the mRNA expression of Wnt3a,β-catenin and TCF.The expression ofβ-catenin was detected by immunofluorescence,and the expression of type I collagen and type III collagen was detected by immunohistochemistry.RESULTS AND CONCLUSION:The results of hematoxylin-eosin staining and Masson staining showed that compared with the model group,inflammatory cell infiltration and collagen fiber amount decreased in the Lijin group(P<0.001),and muscle fibers gradually healed.Western blot results showed that compared with the model group,the protein expression levels of Wnt3a,β-catenin,TCF,type I collagen and

关 键 词：理筋手法 筋伤 骨骼肌损伤 腓肠肌 纤维化 瘢痕 修复 WNT/Β-CATENIN信号通路 

分 类 号：R459.9[医药卫生—治疗学] R318[医药卫生—临床医学] R274.3