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Fabrication of a silver nanoparticle-coated collagen membrane with anti-bacterial and anti-inflammatory activities for guided bone regeneration

Biomed Mater. 2018 Oct 2;13(6):065014. doi: 10.1088/1748-605X/aae15b.

Abstract

Alveolar bone loss is a common problem that affects dental implant placement. A barrier between the bone substitute and gingiva that can prevent fibro-tissue ingrowth, bacterial infection and induce bone formation is a key factor in improving the success of alveolar ridge reconstruction. This study aims to develop a bioactive collagen barrier material for guided bone regeneration, that is coupled with anti-bacterial and anti-inflammatory properties. We have evaluated two silver coating methods and found controllable and precise coating achieved by sonication compared with sputtering. The optimized AgNP-coated collagen membrane exhibited excellent anti-bacterial effects against Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa) with limited cellular toxicity. It also displayed effective anti-inflammatory effects by reducing the expression and release of inflammatory cytokines including IL-6 and TNF-alpha. Additionally, AgNP-coated collagen membranes were able to induce osteogenic differentiation of mesenchymal stem cells that guide bone regeneration. These findings demonstrate the potential application of AgNP-coated collagen membranes to prevent infection after bone graft introduction in alveolar ridge reconstruction.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alveolar Process / physiology
  • Animals
  • Anti-Bacterial Agents / chemistry*
  • Anti-Inflammatory Agents / chemistry*
  • Bone Regeneration*
  • Bone Substitutes
  • Cell Survival
  • Coated Materials, Biocompatible
  • Collagen / chemistry
  • Dental Implants
  • Gingiva
  • Guided Tissue Regeneration
  • Guided Tissue Regeneration, Periodontal / methods*
  • Interleukin-6 / metabolism
  • L-Lactate Dehydrogenase / metabolism
  • Mesenchymal Stem Cells / metabolism
  • Metal Nanoparticles / chemistry*
  • Mice
  • Mice, Inbred C3H
  • Microbial Sensitivity Tests
  • Osseointegration
  • Osteogenesis
  • Pseudomonas aeruginosa / drug effects
  • Silver / chemistry*
  • Staphylococcus aureus / drug effects
  • Surface Properties
  • Tumor Necrosis Factor-alpha / metabolism

Substances

  • Anti-Bacterial Agents
  • Anti-Inflammatory Agents
  • Bone Substitutes
  • Coated Materials, Biocompatible
  • Dental Implants
  • Interleukin-6
  • Tumor Necrosis Factor-alpha
  • Silver
  • Collagen
  • L-Lactate Dehydrogenase