Chinese Journal of Tissue Engineering Research ›› 2020, Vol. 24 ›› Issue (34): 5559-5563.doi: 10.3969/j.issn.2095-4344.2106

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Combination of hyaluronic acid hydrogel and bone marrow mesenchymal stem cells promotes cardiac function after myocardial infarction in rats (II)

Shang Qingqing1, 2, Zhou Jianye2   

  1. 1Department of Pain, Affiliated Hospital of Binzhou Medical University, Binzhou 256603, Shandong Province, China; 2State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100037, China

  • Received:2019-10-12 Revised:2019-10-17 Accepted:2019-12-26 Online:2020-11-08 Published:2020-09-11
  • Contact: Zhou Jianye, Master, Professor, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100037, China
  • About author:Shang Qingqing, Master, Department of Pain, Affiliated Hospital of Binzhou Medical University, Binzhou 256603, Shandong Province, China; State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100037, China

Abstract:

BACKGROUND: Our previous experimental results have shown that hyaluronic acid (HA) hydrogel can act as a vehicle for bone marrow mesenchymal stem cell (BMSC) delivery to improve the cardiac function of rats with myocardial infarction.

OBJECTIVE: To explore the effects of BMSCs encapsulated in HA hydrogel on histological changes of the rat myocardium after myocardial infarction.

METHODS: BMSCs from male Sprague-Dawley rats were isolated and cultured, and then HA-encapsulated BMSCs were cultured in vitro in the three-dimensional manner. A model of myocardial infarction was made by ligating the left anterior descending artery of female Sprague-Dawley rats. After 1 week, the model rats were screened by ultrasonic testing and then eligible ones were randomly divided into four groups: PBS group (n=8), HA group (n=8), BMSCs group (n=29), and HA-encapsulated BMSCs group (n=29). At 1 week after ligation, the model rats underwent the secondary thoracotomy followed by corresponding injections into the infarcted region and its marginal zone. At 4 week after injection, cardiovascular regeneration, myocardial protection, and ventricular remodeling were evaluated using hematoxylin-eosin staining, Masson’s staining and immunohistochemical staining, respectively.

RESULTS AND CONCLUSION: At 4 weeks after transplantation, compared with the PBS group, the infarcted ventricular wall was thickened in the HA group, cardiomyocyte hypertrophy was relieved and neovascularization was increased in the BMSCs group, and the largest benefits were indicated in the HA-encapsulated BMSCs group by reversing cardiac remodeling, increasing neovascularization and viable myocardium tissues in the infarct zone. Therefore, the HA-encapsulated BMSCs can achieve the best effect in the treatment of myocardial infarction.

Key words: hyaluronic acid">,  , bone marrow mesenchymal stem cell">,  , myocardial infarction">,  , cell transplantation">,  , cardiac function">,  , stem cells

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