title: Acellular matrix of bovine pericardium bound with L-arginine.
abstract: Surface immobilization of bioactive molecules onto natural tissues has been interestingly studied for the development of new functional matrices for the replacement of lost or malfunctioning tissues. In this study, an acellular matrix of bovine pericardium (ABP) was chemically modified by the direct coupling of L-arginine after glutaraldehyde (GA) cross-linking. The effects of L-arginine coupling on durability and calcification were investigated and the biocompatibility was evaluated in vitro and in vivo. A four-step detergent and enzymatic extraction process has been utilized to remove cellular components from fresh bovine pericardium (BP). Microscopic observation confirmed that nearly all cellular constituents are removed. Thermal and mechanical properties showed that the durability of L-arginine-treated matrices increased as compared with control ABP and GA-treated ABP. Resistance to collagenase digestion revealed that modified matrices have greater resistance to enzyme digestion than control ABP and GA-treated ABP. The in vivo calcification study demonstrated much less calcium deposition on L-arginine-treated ABP than GA-treated one. In vitro cell viability results showed that ABP modified with L-arginine leads to a significant increase in attachment of human dermal fibroblasts. The obtained results attest to the usefulness of L-arginine-treated ABP matrices for cardiovascular bioprostheses.
authors.affiliation: Department of Molecular Science and Technology, Ajou University, Suwon 443-749, Korea.
authors.forename: Hyo Joo
authors.initials: HJ
authors.lastname: Kim
authors.forename: Jin Woo
authors.initials: JW
authors.lastname: Bae
authors.forename: Chun Ho
authors.initials: CH
authors.lastname: Kim
authors.forename: Jin Woo
authors.initials: JW
authors.lastname: Lee
authors.forename: Jung Woog
authors.initials: JW
authors.lastname: Shin
authors.forename: Ki Dong
authors.initials: KD
authors.lastname: Park
mesh_terms: D000818:Animals; D001120:Arginine / Q000008:administration & dosage / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry / Q000494:pharmacology; D002417:Cattle; D002458:Cell Fractionation / Q000379:methods*; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002474:Cell-Free System; D002478:Cells, Cultured; D004548:Elasticity; D005109:Extracellular Matrix / Q000737:chemistry*; D008422:Materials Testing; D010496:Pericardium / Q000166:cytology* / Q000187:drug effects / Q000502:physiology*; D023822:Tissue Engineering / Q000379:methods*; D044366:Transition Temperature
chemical_list: D001672:Biocompatible Materials; D001120:Arginine