• Department of Cardiovascular Surgery, 2nd Affiliated Hospital of Harbin Medical University, Key Laboratory of Myocardial Ischemia Mechanism and Treatment, Ministry of Education, Harbin, 150086, P.R.China;
KANG Kai, Email: kangkai1975@sina.com
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Objective To investigate the feasibility of animal model of the reconstruction of right ventricular outflow tract in rats.Methods A total of 15 female Sprague-Dawley (SD) rats underwent right ventricular outflow tract reconstruction surgery. Before the operation, the collagen scaffolds were treated with g 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride chemistry (EDC), and seeded with human bone marrow stem cells (h-MSCs). Three days after the surgery, 3 rats were randomly sacrificed to evaluate the transmural resection of right ventricular outflow tract. One or 3 months later, other 3 rats at each timepoint were sacrificed, stained with Masson’s Trichrome to observe the degradation of scaffold. Furthermore, 4 weeks after the surgery, 4 rats were sacrificed and the hearts were sliced. Anti-human mitochondria staining was used to identify the survival of seeding cells.Results The transmural resection of right ventricular outflow tract was feasible in rats at an acceptable mortality (13.3%). After EDC treatment, the degradation rate of collagen scaffold was extended greatly. The seeding cells were detected by anti-mitochandria immunofluorescent staining in all patches 4 weeks after the operation.Conclusion Rat model of right ventricular outflow tract reconstruction could be a stable, reliable and economical screening model for engineered heart tissue research.

Citation: CHENG Yue, KANG Kai, CHUAI Junbo, QIN Xionghai, TIAN Xin, YANG Feng, JIANG Shulin, XIE Baodong. The creation of the reconstruction of right ventricular outflow tract in rats. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2019, 26(3): 260-263. doi: 10.7507/1007-4848.201811045 Copy

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