title: Biochemical and physico-chemical aspects of biomaterials calcification.
abstract: Intrinsic tissue calcification mainly results from increased penetration of plasma proteins into the leaflets of bioprosthetic cardiac valves. The loss of activity of natural calcification inhibitors changes tissue properties and promotes pathological processes. N-vinylpyrrolidone, 3-amino-1,1-hydroxypropylendiphosphonic acid, O,O-diethylvinylphosphonates and antiaggregant (acryloilsalicylic acid) were used to decrease porosity and prevent calcification. gamma-radiation and glutaraldehyde were used to immobilize these agents. Tissue calcification was studied using subcutaneous implantation of the samples in young rats. The study indicates that the copolymerization of N-vinylpyrrolidone, O,O-diethylvinylphosphonates and acryloilsalicylic acid decreases calcium and phosphorous accumulation during in vivo experiments.
authors.affiliation: USSR Academy of Medical Sciences, Department of Cardiac Surgery, Moscow.
authors.forename: S M
authors.initials: SM
authors.lastname: Krasovskaya
authors.forename: L D
authors.initials: LD
authors.lastname: Uzhinova
authors.lastname: Andrianova MYu
authors.forename: A A
authors.initials: AA
authors.lastname: Prischenko
authors.forename: M V
authors.initials: MV
authors.lastname: Livantsov
authors.forename: M V
authors.initials: MV
authors.lastname: Lomonosov
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000009:adverse effects*; D002114:Calcinosis / Q000209:etiology / Q000517:prevention & control*; D002118:Calcium / Q000378:metabolism; D002417:Cattle; D004164:Diphosphonates / Q000627:therapeutic use; D006350:Heart Valve Prosthesis; D010758:Phosphorus / Q000378:metabolism; D011759:Pyrrolidines / Q000627:therapeutic use; D051381:Rats; D013552:Swine
chemical_list: D001672:Biocompatible Materials; D004164:Diphosphonates; D011759:Pyrrolidines; D010758:Phosphorus; D002118:Calcium