Calcium crystal effects on the cells of the joint: Implications for pathogenesis of disease

Research output: Contribution to journalReview article

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In the past three years, there has been considerable progress in delineating the mechanism of calcium-containing crystal-induced cell activation: (1) the identification of Ca2+ influx and p42/44 mitogen- activated protein kinase activation as the signal transduction pathways; (2) induction of nuclear transcription factors of cyclic adenosine monophosphate (cAMP) response element binding protein, activator protein-1, and nuclear factor ≃B; (3) the differential role of crystal endocytosis and dissolution in crystal-induced metalloproteinase synthesis and mitogenesis; (4) crystal upregulation of matrix metalloproteinases, including MMP-13 but downregulation of tissue inhibitor of metalloproteinase-1 and -2, thus magnifying the degenerative effect of crystals. Phosphocitrate, a specific inhibitor of biologic effect of calcium crystals, reverses the degenerative effects of crystals. (C) 2000 Lippincott Williams and Wilkins, Inc.

Original languageEnglish (US)
Pages (from-to)223-227
Number of pages5
JournalCurrent Opinion in Rheumatology
Issue number3
StatePublished - May 15 2000


ASJC Scopus subject areas

  • Rheumatology

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