骨髓间充质干细胞对髋部骨折诱导的老年大鼠急性肺损伤的保护机制

doi:10.13418/j.issn.1001-165x.2015.06.012

中国临床解剖学杂志 ›› 2015, Vol. 33 ›› Issue (6): 672-676.doi: 10.13418/j.issn.1001-165x.2015.06.012

骨髓间充质干细胞对髋部骨折诱导的老年大鼠急性肺损伤的保护机制

陈杨葭^1,2，　张艳金²，　刘佳²，　孙天胜²，　华文熙¹，　钟剑峰¹，　冯杰扬¹，　叶超群^1,2

CHEN Yang-jia ^1,2, ZHANG Yan-jin ², LIU Jia², SUN Tian-sheng ², HUA Wen-xi¹, ZHONG Jian-feng¹, FENG Jie-yang¹, YE Chao-qun ^1,2

收稿日期:2015-05-30 出版日期:2015-11-25 发布日期:2015-12-18
通讯作者: 叶超群，博士后，硕士生导师，Tel：13801041181，E-mail:yechaoqun@sina.com
作者简介:陈杨葭（1991-），女，硕士，康复医学与理疗学，Tel：13268262637，E-mail:ohjia@sina.com
基金资助:
国际科技合作项目（2010DFA31250）

The protective effect of bone marrow-derived mesenchymal stem cells on acute lung injury after hip fracture in elderly rat

CHEN Yang-jia1,2, ZHANG Yan-jin2, LIU Jia2, SUN Tian-sheng2, HUA Wen-xi1, ZHONG Jian-feng1, FENG Jie-yang1, YE Chao-qun1,2

1. Southern Medical University, Guangzhou 510515, China; 2. Department of Orthopaedics, Chinese PLA Beijing Army General Hospital, Beijing 100700, China

Received:2015-05-30 Online:2015-11-25 Published:2015-12-18

摘要/Abstract

摘要：

目的　探讨骨髓间充质干细胞（bone marrow-derived mesenchymal stem cells，BMSCs）对老年单侧髋部骨折大鼠急性肺损伤（acute lung injury, ALI）的保护作用。方法　将15月龄雌性WISTAR大鼠分为对照组（不做任何处理）、模型组（右髋部骨折+生理盐水）、治疗组（右髋部骨折+BMSCs）。治疗组于造模后经尾静脉注射1 ml BMSCs(2.5×106/ml)，模型组给予等体积生理盐水。创伤后24 h进行肺组织病理评分，ELISA法检测检测肺组织MPO含量、肺及血液炎症因子（TNF-α、IL-6、IL-10）水平。结果　与对照组相比，模型组肺部病理学评分、肺组织MPO水平、肺及血液炎症反应相关指标均明显升高（P<0.01）。BMSCs处理可明显降低肺组织病理学评分，肺组织MPO水平、肺及血液炎症反应相关指标下调，同时IL-10水平有更明显的增高（P<0.01）。结论髋部骨折可诱发老年大鼠急性肺损伤，BMSCs移植对老年髋部骨折大鼠肺损伤具有保护作用，其机制与缓解全身及肺部炎症反应有关。

关键词: 老年大鼠, 髋部骨折, 骨髓间充质干细胞, 急性肺损伤

Abstract:

Objective　To investigate the protective effect of bone marrow-derived mesenchymal stem cells on acute lung injury (ALI) after unilateral hip fracture in elderly rat.　Methods　15 month old WISTAR rat were randomly divided into three groups: a control group (n=15)、a model group(hip fracture+NS, n=15) and a treated group (hip fracture+BMSCs, n=15). 1 ml BMSCs（2.5×106/ml）were injected through the caudal vein in the treated group, and the same volume of NS was injected into the model group Histologic changes were examined at 24 hours after fracture. And the concentration of MPO and related inflammatory factors in the impaired lung tissue and blood were examined through enzyme-linked immunosorbent assay (ELISA).　Results　Compared with the control group,the histopathological damage of lung, the concentration of MPO and related inflammatory factors were obviously enhanced（P<0.01）. Compared with the model group,application of BMSCs significantly ameliorated the inflammatory lesions of the lung, increased the concentration of IL-10, and further down-regulated the concentration of MPO and other inflammatory factors（P<0.01）.　Conclusions　ALI can be induced by hip fracture in aged rats. BMSCs shows a certain protective effect on ALI with down-regulation of inflammatory response in systemic and pulmonary as a possible mechanism.

Key words: Aged rats, Hip fracture, Bone marrow-derived mesenchymal stem cells, Acute lung injury

陈杨葭,张艳金,刘佳,孙天胜,华文熙,钟剑峰,冯杰扬,叶超群. 骨髓间充质干细胞对髋部骨折诱导的老年大鼠急性肺损伤的保护机制[J]. 中国临床解剖学杂志, 2015, 33(6): 672-676.

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骨髓间充质干细胞对髋部骨折诱导的老年大鼠急性肺损伤的保护机制

The protective effect of bone marrow-derived mesenchymal stem cells on acute lung injury after hip fracture in elderly rat

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