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Inflammatory responses to biomaterials

L Tang1, J W Eaton

  • 1Department of Pathology and Laboratory Medicine, Albany Medical College, NY 12208, USA.

American Journal of Clinical Pathology
|April 1, 1995
PubMed
Summary
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Biocompatibility of implanted medical devices is crucial. Host proteins like fibrinogen trigger inflammation, potentially causing implant failure and material degradation, highlighting gaps in understanding host-implant interactions.

Area of Science:

  • Biomaterials Science
  • Immunology
  • Medical Device Engineering

Background:

  • Implanted biomedical devices are vital in healthcare, yet their biocompatibility factors remain poorly understood.
  • Materials, though generally inert, can provoke adverse host reactions like inflammation, fibrosis, coagulation, and infection.

Purpose of the Study:

  • To review the inflammatory responses, including fibrosis, commonly associated with implanted biomaterials.
  • To highlight the role of host proteins and material degradation in implant complications.

Main Methods:

  • Review of existing literature on host-implant interactions and biomaterial biocompatibility.
  • Focus on inflammatory responses, protein adsorption, and material degradation mechanisms.

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Main Results:

  • Adsorbed host proteins, particularly fibrinogen, significantly influence acute inflammatory responses.
  • Chronic inflammation, often due to biomaterial fragments, can lead to implant failure (e.g., silicone granuloma).
  • Material degradation can occur due to inflammatory cell-derived oxidative products.

Conclusions:

  • There is a significant knowledge gap regarding the determinants and mechanisms of host:biomaterial responses.
  • Understanding tissue:biomaterial interactions is essential for explaining implant complications and developing improved biocompatible materials.