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논문 기본 정보

자료유형
학술저널
저자정보
Hussain Timon (Ludwig-Maximilians-University Munich) Gellrich Donata (Ludwig-Maximilians-University Munich) Siemer Svenja (Ludwig-Maximilians-University Munich) Reichel Christoph A. (Ludwig-Maximilians-University Munich) Eckrich Jonas (Johannes Gutenberg University Mainz) Dietrich Dimo (University of Bonn) Knauer Shirley K. (University Duisburg-Essen) Stauber Roland H. (Johannes Gutenberg University Mainz) Strieth Sebastian (University of Bonn)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제18권 제2호
발행연도
2021.1
수록면
297 - 303 (7page)

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Background: To improve the biocompatibility of porous polyethylene (PPE) implants and expand their application range for reconstructive surgery in poorly vascularized environments, implants were coated with tumor necrosis factor α (TNFα) inhibitor Etanercept. While approved for systemic application, local application of the drug is a novel experimental approach. Microvascular and mechanical integration as well as parameters of inflammation were analyzed in vivo. Methods: PPE implants were coated with Etanercept and extracellular matrix (ECM) components prior to implantation into dorsal skinfold chambers of C57BL/6 mice. Fluorescence microscopy analyses of angiogenesis and local inflammatory response were thrice performed in vivo over a period of 14 days to assess tissue integration and biocompatibility. Uncoated implants and ECM-coated implants served as controls. Results: TNFα inhibition with Etanercept led to a reduced local inflammatory response: leukocyte-endothelial cell adherence was significantly lowered compared to both control groups (n = 6/group) on days 3 and 14, where the lowest values were reached: 3573.88 leukocytes/mm-2 ± 880.16 (uncoated implants) vs. 3939.09 mm-2 ± 623.34 (Matrigel only) vs. 637.98 mm-2 + 176.85 (Matrigel and Etanercept). Implant-coating with Matrigel alone and Matrigel and Etanercept led to significantly higher vessel densities 7 and 14 days vs. 3 days after implantation and compared to uncoated implants. Mechanical implant integration as measured by dynamic breaking strength did not differ after 14 days. Conclusion: Our data show a reduced local inflammatory response to PPE implants after immunomodulatory coating with Etanercept in vivo, suggesting improved biocompatibility. Application of this tissue engineering approach is therefore warranted in models of a compromised host environment.

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