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Related Experiment Video

Updated: Jun 12, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
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Nanostructured assemblies for dental application.

Florence Fioretti1, Carlos Mendoza-Palomares, Marie Helms

  • 1Institut National de la Sante et de la Recherche Medicale (INSERM), Unite 977, 11 rue Humann, Strasbourg, France.

ACS Nano
|May 29, 2010
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Summary

Poly-l-glutamic acid coupled alpha-melanocyte-stimulating hormone (PGA-alpha-MSH) promotes pulp fibroblast proliferation and reduces inflammation. This novel biomaterial shows promise for endodontic regeneration and treating dental lesions.

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Area of Science:

  • Biomaterials Science
  • Regenerative Dentistry
  • Immunology

Background:

  • Root canal therapy saves millions of teeth annually, but regenerative approaches offer ideal revitalization.
  • Melanocortin peptides, like alpha-melanocyte-stimulating hormone (alpha-MSH), exhibit anti-inflammatory properties.
  • Poly-l-glutamic acid coupled alpha-MSH (PGA-alpha-MSH) retains anti-inflammatory effects on monocytes.

Purpose of the Study:

  • To investigate the effects of PGA-alpha-MSH on dental pulp fibroblasts.
  • To evaluate PGA-alpha-MSH's potential in endodontic regeneration and anti-inflammatory treatment.

Main Methods:

  • Dental pulp fibroblasts were stimulated with lipopolysaccharide (LPS) and treated with PGA-alpha-MSH.
  • Cellular responses including cytokine secretion (TNF-alpha, IL-10, IL-8) and proliferation were analyzed.
  • Nanostructured multilayered films (PLL-PGA-alpha-MSH, DGL(G4)-PGA-alpha-MSH) were fabricated and characterized using atomic force microscopy.

Main Results:

  • PGA-alpha-MSH inhibited TNF-alpha and induced IL-10 in LPS-stimulated fibroblasts.
  • In non-stimulated conditions, PGA-alpha-MSH promoted IL-8 secretion and fibroblast proliferation, unlike free alpha-MSH.
  • Incorporation of PGA-alpha-MSH into multilayered films enhanced cell viability, proliferation, film thickness, and roughness.

Conclusions:

  • PGA-alpha-MSH demonstrates potential as an anti-inflammatory agent for endodontic lesions.
  • Functionalized nanostructured films containing PGA-alpha-MSH represent a novel biomaterial for endodontic regeneration.
  • PGA-alpha-MSH promotes pulp fibroblast proliferation and adhesion, suggesting therapeutic applications in dental pulp regeneration.