Matrix metalloproteinase-3 in articular cartilage is upregulated by joint immobilization and suppressed by passive joint motion

Daniel J. Leong, Xiang I. Gu, Yonghui Li, Jonathan Y. Lee, Damien M. Laudier, Robert J. Majeska, Mitchell B. Schaffler, Luis Cardoso, Hui (Herb) Sun

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Both underloading and overloading of joints can lead to articular cartilage degradation, a process mediated in part by matrix metalloproteinases (MMPs). Here we examine the effects of reduced loading of rat hindlimbs on articular cartilage expression of MMP-3, which not only digests matrix components but also activates other proteolytic enzymes. We show that hindlimb immobilization resulted in elevated MMP-3 mRNA expression at 6. h that was sustained throughout the 21. day immobilization period. MMP-3 upregulation was higher in the medial condyle than the lateral, and was greatest in the superficial cartilage zone, followed by middle and deep zones. These areas also showed decreases in safranin O staining, consistent with reduced cartilage proteoglycan content, as early as 7. days after immobilization. One hour of daily moderate mechanical loading, applied as passive joint motion, reduced the MMP-3 and ADAMTS-5 increases that resulted from immobilization, and also prevented changes in safranin O staining. Intra-articular injections of an MMP-3 inhibitor, N-isobutyl-N-(4-methoxyphenylsulfonyl)-glycylhydroxamic acid (NNGH), dampened the catabolic effects of a 7. day immobilization period, indicating a likely requirement for MMP-3 in the regulation of proteoglycan levels through ADAMTS-5. These results suggest that biomechanical forces have the potential to combat cartilage destruction and can be critical in developing effective therapeutic strategies.

Original languageEnglish (US)
Pages (from-to)420-426
Number of pages7
JournalMatrix Biology
Volume29
Issue number5
DOIs
StatePublished - Jun 2010
Externally publishedYes

Fingerprint

Matrix Metalloproteinase 3
Articular Cartilage
Immobilization
Joints
Cartilage
Proteoglycans
Staining and Labeling
Hindlimb Suspension
Intra-Articular Injections
Matrix Metalloproteinase Inhibitors
Hindlimb
Matrix Metalloproteinases
Peptide Hydrolases
Up-Regulation
Bone and Bones
Messenger RNA

Keywords

  • Cartilage
  • Immobilization
  • MMP-3
  • Passive motion

ASJC Scopus subject areas

  • Molecular Biology
  • Medicine(all)

Cite this

Matrix metalloproteinase-3 in articular cartilage is upregulated by joint immobilization and suppressed by passive joint motion. / Leong, Daniel J.; Gu, Xiang I.; Li, Yonghui; Lee, Jonathan Y.; Laudier, Damien M.; Majeska, Robert J.; Schaffler, Mitchell B.; Cardoso, Luis; Sun, Hui (Herb).

In: Matrix Biology, Vol. 29, No. 5, 06.2010, p. 420-426.

Research output: Contribution to journalArticle

Leong, Daniel J. ; Gu, Xiang I. ; Li, Yonghui ; Lee, Jonathan Y. ; Laudier, Damien M. ; Majeska, Robert J. ; Schaffler, Mitchell B. ; Cardoso, Luis ; Sun, Hui (Herb). / Matrix metalloproteinase-3 in articular cartilage is upregulated by joint immobilization and suppressed by passive joint motion. In: Matrix Biology. 2010 ; Vol. 29, No. 5. pp. 420-426.
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