Antibody response to collagen after functional implantation of different polyester vascular prostheses in pigs

✍ Scribed by M. Schlosser; R. Zippel; A. Hoene; G. Urban; T. Ueberrueck; F. Marusch; A. Koch; L. Meyer; L. Wilhelm

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 105 KB
• Volume: 72A
• Category: Article
• ISSN: 1549-3296
• DOI: 10.1002/jbm.a.30240

✦ Synopsis

Abstract

Besides inflammation, specific immune responses are seen also after implantation of biomaterials. The aim was to investigate the humoral response to bovine collagen type I following implantation of various polyester (Dacron) prostheses into pigs. In 24 randomized pigs, the infrarenal aorta was replaced with a segment of collagen‐impregnated, woven polyester prosthesis of low, medium, or high porosity. IgG antibodies were detected by immunoassay using native and denatured collagen type I as a target for blood samples taken on day 1 (implantation), 10, 17, 24, 62, and 116. As generally observed, antibodies to native and denatured collagen are of low titer and were significantly correlated with enhanced binding to the denatured form (p < 0.001). The highest overall antibody prevalence to native and denatured collagen was obtained on day 116 with 68% and on day 62 with 59%, respectively. Prostheses with high porosity induced an early immune response on day 10; those with low and medium porosity induced the highest antibody levels later after 2 months. Collagen antibodies neither correlated with serum IgG contents nor with antibodies to the prosthesis polyester matrix. Thus, humoral immune response against implant components may provide a further parameter in describing biocompatibility but also a potential marker that may facilitate monitoring of individual perigraft reaction. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res 72A: 317–325, 2005