Comparison of decellularizative procedures of bovine pericardium tissue-engineering heart valve scaffold
- VernacularTitle:牛心包组织工程心脏瓣膜支架脱细胞方法的比较
- Author:
Min YANG
;
Changzhi CHEN
;
Shaofei CHENG
- Publication Type:Journal Article
- Keywords:
Tissue engineering Heart valve prosthesis Bioprosthesis Extraeelular matrix
- From:
Chinese Journal of Thoracic and Cardiovascular Surgery
2003;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective Compared with different decellularization procedures for their potential of cell removal and the ability to preserve the matrix. Methods Specimens of bovine pericardiums were treated by 3 approaches (detergent and enzyme extraction、trypsin 、Triton-X 100 and sodium-deoxycholate). Tissue samples were then observed by HE staining and scanning electron microscopy to confirm the removal of cells. Von Gieson(VG) staining and Gomori staining were used for showing the integrity of collagen and elastin. DNA content was examined by the method of DNA extraction. Tissue shrinkage temperature and mechanical properties were also studied. Results Completely decellularization were achieved in 3 groups. While trypsin、Triton-X 100 and sodium-deoxycholate caused severe structural destruction and declined of mechanical properties of the matrix. In contrast, detergent and enzyme extraction achieved completely deeellularization and effectively preservation the matrix structure. Conclusion This research demonstrated detergent and enzyme extraction could achieve both complete decellularization and preservation of the matrix structure. This approach may provide an ideal platform for the construction of tissue-engineering heart valves.
