Thumbnail
Access Restriction
Authorized

Author Vasudev, S. C. ♦ Moses, L. R. ♦ Sharma, C. P.
Source Sree Chitra Tirunal Institute for Medical Sciences & Technology
Content type Text
Publisher Artificial Cells Blood Substitutes and Immobilization Biotechnology
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Diseases
Subject Domain (in MeSH) Cardiovascular System ♦ Anatomy ♦ Cardiovascular Diseases ♦ Diseases ♦ Cell Physiological Phenomena ♦ Biological Sciences
Subject Keyword Cardiology
Abstract Calcification is the leading cause of failure of a wide spectrum of cardiovascular and non-cardiovascular medical devices. In this study our aim was to immobilize polyethylene glycol (PEG) and heparin on multiple crosslinked bovine pericardium with Glutaraldehyde (GA) and carbodiimide. Grafting of PEG and heparin through an intermediate tissue bound substrate containing aldehyde and imide functional groups showed reduction in calcification. In this experimental protocol, we used Golomb and Wagner's in vitro model for studying pericardial calcification and a diffusion cell with two compartments for evaluating the diffusion of calcium across the BP. The results showed that heparin immobilization on the surface reduces calcification independent of its concentration in the incubating medium. It is conceivable that inactivation of unpaired aldehydic moieties present in pericardium after exposure to GA act as potential site for PEG grafting and imide functionalities of EDC can covalently bind heparin, would be the key step in the prevention of calcification It is well-established fact that heparin has a potent antithrombotic effect. But the exact role of heparin in the anticalcification process of bioprostheses still remain elusive.
Education Level UG and PG
Learning Resource Type Article
Educational Framework Medical Council of India (MCI)
Journal Artificial Cells Blood Substitutes and Immobilization Biotechnology
Volume Number 28
Issue Number 3
Page Count 13
Starting Page 241
Ending Page 253