Functional non-glutaraldehyde treated porcine pericardium for anti-coagulation,anti-calcification,and endothelial proliferation bioprosthetic heart valves  

作　　者：Xiaotong Chen Tao Yu Qunshou Kong Dajun Kuang Hong Xu Zhiyu Zhao Li Yang Gaocan Li Haojun Fan Yunbing Wang 

机构地区：[1]National Engineering Research Center of Clean Technology in Leather Industry,Sichuan University,Chengdu 610065,China [2]National Engineering Research Center for Biomaterials,Sichuan University,Chengdu 610065,China [3]Venus Medtech(Hangzhou)Inc.,Hangzhou,China.

出　　处：《Journal of Leather Science and Engineering》2022年第1期320-332,共13页皮革科学与工程（英文）

基　　金：National Key Research and Development Programs(2020YFC1107802);the National Natural Science Foundation of China(32071357);the Sichuan Science and Technology Program(2021YFH0011),Sichuan Province Major Science and Technology Special Projects(2018SZDZX0011),the National 111 project of Introducing Talents of Discipline to Universities(No.B16033).We would be grateful to the help of VENUS Medtech Inc.(Hangzhou,China)for providing the fresh porcine pericardium.

摘　　要：In the last decade,the number of transcatheter heart valve replacement for severe heart valve disease has increased exponentially.Although the bioprosthetic artificial heart valve(BHV)has similar fluid dynamics performance to the original heart valve compared with mechanical heart valve so that there is no need to take long-term anticoagulant drugs to prevent thromboembolism,transcatheter BHV replacement are still at risk for thrombosis during the first few months according to the clinical data.However,the use of antithrombotic drugs can also increase the risk of bleeding.Therefore,it is particularly important to improve the anticoagulant properties for the BHV itself.In this work,a kind of non-glutaraldehyde cross-linked BHV material with excellent antithrombotic ability has been prepared from carboxylated oxazolidine treated porcine pericardium(consisting of collagen,elastin and glycoprotein)with the further graft of the anticoagulant heparin sodium via hydrophilic modified chitosan.Along with the similar mechanical properties and collagen stability comparable to the glutaraldehyde cross-linked porcine pericardium(PP),these functional non-glutaraldehyde cross-linked PPs exhibit better biocompatibility,promoted endothelial proliferation and superior anti-calcification ability.More importantly,excellent anticoagulant activity can be observed in the hematological experiments in vivo and in vitro.In summary,these excellent performances make these functional non-glutaraldehyde cross-linked PPs great potentialities in the BHV applications.

关 键 词：Bioprosthetic heart valves Oxazolidine CYTOCOMPATIBILITY ANTI-COAGULATION 

分 类 号：O62[理学—有机化学]