IMPROVED METHODS FOR INHIBITING STENOSIS, OBSTRUCTION, OR CALCIFICATION OF A STENTED HEART VALVE OR BIOPROSTHESIS

摘要

Methods for inhibiting stenosis, obstruction and/or calcification of a heart valve following implantation in a vessel having a wall are disclosed. In one aspect the method includes providing a bioprosthetic heart valve mounted on an elastical stent; treating the bioprosthetic heart valve with a tissue fixative; coating the stent and the bioprosthetic valve with a coating composition including one or more therapeutic agents; implanting the bioprosthetic valve into the vessel in a diseased natural valve site; eluting the coating composition from the bioprosthetic valve; and inhibiting stenosis, obstruction and/or calcification of the bioprosthetic heart valve by preventing the attachment of stem cells to the bioprosthetic heart valve, the stem cells circulating external and proximate to the bioprosthetic heart valve by activating nitric oxide production (i) in the circulating stem cells, (ii) in an endothelial cell lining covering the bioprosthetic heart valve tissue, (iii) or both.