title: Lyophilized bovine pericardium treated with a phenethylamine-diepoxide as an alternative to preventing calcification of cardiovascular bioprosthesis: preliminary calcification results.
abstract: This study investigated the calcification process that occurred on chemically treated bovine pericardium substrata through tests with simulated body fluid solutions. The use of bovine pericardium bioprosthetic valves in heart valve surgery has a significant drawback due to the calcification processes. Thus, many routes such as chemical treatments in the substratum or the adoption of systemic therapies are considered in the literature with the intention to inhibit or to decelerate this process. The presented treatment using the two different phenetylamine-diepoxide solutions showed no effects on calcification experiments as showed by the tests. However, the lyophilized bovine pericardium samples, treated with both solutions, did not show any detectable phosphate deposits. The lyophilization of bovine pericardium before chemical treatments with cross-link agents as epoxy compounds may be an alternative to the conventional calcification prevention methods, but further investigations are recommended to check if the same behavior is found in all lyophilized systems.
authors: Faculdade de Engenharia Química, Universidade Estadual de Campinas, Campinas, Brazil.
authors: Cassiano G
authors: CG
authors: Aimoli
authors: Grínia M
authors: GM
authors: Nogueira
authors: Leandro S
authors: LS
authors: Nascimento
authors: André
authors: A
authors: Baceti
authors: Adolfo A
authors: AA
authors: Leirner
authors: Marina J S
authors: MJ
authors: Maizato
authors: Olga Z
authors: OZ
authors: Higa
authors: Bronislaw
authors: B
authors: Polakiewicz
authors: Ronaldo N M
authors: RN
authors: Pitombo
authors: Marisa M
authors: MM
authors: Beppu
mesh_terms: D000818:Animals; D001705:Bioprosthesis; D001826:Body Fluids / Q000378:metabolism; D002114:Calcinosis / Q000378:metabolism / Q000517:prevention & control*; D002417:Cattle; D003432:Cross-Linking Reagents / Q000737:chemistry; D004577:Electron Probe Microanalysis; D004852:Epoxy Compounds / Q000737:chemistry*; D005612:Freeze Drying / Q000379:methods; D006350:Heart Valve Prosthesis; D066298:In Vitro Techniques; D008855:Microscopy, Electron, Scanning; D010496:Pericardium / Q000737:chemistry* / Q000648:ultrastructure; D010627:Phenethylamines / Q000737:chemistry*
chemical_list: D003432:Cross-Linking Reagents; D004852:Epoxy Compounds; D010627:Phenethylamines; C029261:phenethylamine