Growth factor actions on articular cartilage

S. B. Trippel

Research output: Contribution to journalArticle

217 Scopus citations

Abstract

Polypeptide growth factors play a major role in the regulation of cell behavior, including that of articular chondrocytes. Among the most influential of these factors identified for articular cartilage are insulin like growth factor I (IGF-I), basic fibroblast growth factor (bFGF), and transforming growth factor beta (TGFβ). IGF-I stimulates articular chondrocyte matrix synthetic and mitotic activity and inhibits chondrocyte mediated matrix catabolism. The role of bFGF as a potent mitogen for articular chondrocytes is well established. In contrast, this factor appears to play a complex role in matrix synthesis and degradation, promoting both anabolic and catabolic functions. Both IGF-I and bFGF have been shown to augment articular cartilage repair in vivo. TGFβ is particularly dependent upon the context in which it acts, eliciting seemingly opposite effects under different experimental conditions. These and other factors interact to modulate their respective actions, creating effector cascades and feedback loops of intercellular and intracellular events that control articular chondrocyte functions. Elucidation of the actions and interactions of these factors may be expected to clarify the etiopathogenesis of osteoarthritis and possibly offer novel methods for its treatment.

Original languageEnglish (US)
Pages (from-to)129-132
Number of pages4
JournalJournal of Rheumatology
Volume22
Issue numberSUPPL. 43
StatePublished - Jan 1 1995

Keywords

  • Articular cartilage
  • Fibroblast growth factor
  • Growth factors
  • Insulin like growth factor I
  • Transforming growth factor beta

ASJC Scopus subject areas

  • Rheumatology
  • Immunology and Allergy
  • Immunology

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  • Cite this

    Trippel, S. B. (1995). Growth factor actions on articular cartilage. Journal of Rheumatology, 22(SUPPL. 43), 129-132.