Changes in immunolocalisation of beta-dystroglycan and specific degradative enzymes in the osteoarthritic synovium.

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  • Additional Information
    • Source:
      Publisher: W.B. Saunders For The Osteoarthritis Research Society Country of Publication: England NLM ID: 9305697 Publication Model: Print-Electronic Cited Medium: Print ISSN: 1063-4584 (Print) Linking ISSN: 10634584 NLM ISO Abbreviation: Osteoarthritis Cartilage Subsets: MEDLINE
    • Publication Information:
      Publication: London : W.B. Saunders For The Osteoarthritis Research Society
      Original Publication: London : Published for the Society by Baillère Tindall, c1993-
    • Subject Terms:
      ADAM Proteins/*analysis ; Dystroglycans/*analysis ; Matrix Metalloproteinases/*analysis ; Osteoarthritis, Hip/*metabolism ; Procollagen N-Endopeptidase/*analysis; ADAMTS4 Protein ; Blotting, Western/methods ; Cartilage, Articular/enzymology ; Cartilage, Articular/metabolism ; Endothelium, Vascular/enzymology ; Endothelium, Vascular/metabolism ; Hip Joint/enzymology ; Hip Joint/metabolism ; Humans ; Immunohistochemistry/methods ; Matrix Metalloproteinase 13/analysis ; Matrix Metalloproteinase 3/analysis ; Matrix Metalloproteinase 9/analysis ; Muscle, Smooth, Vascular/enzymology ; Muscle, Smooth, Vascular/metabolism ; Osteoarthritis, Hip/enzymology ; Synovial Fluid/enzymology ; Synovial Fluid/metabolism ; Synovial Membrane/enzymology ; Synovial Membrane/metabolism
    • Abstract:
      Objective: To investigate the immunolocalisation of beta-dystroglycan (beta-DG) and specific matrix metalloproteinases (MMPs)-3, -9, -13 and a disintegrin like and metalloproteinase thrombospondin type 1 motif 4 (ADAMTS-4) within the joint tissues of patients with osteoarthritis (OA) and unaffected controls.
      Design: Cartilage, synovium and synovial fluid were obtained from the hip joints of five osteoarthritic (patients undergoing total hip replacement) and five control hip joints (patients undergoing hemiarthroplasty for femoral neck fracture). The samples were analysed for beta-DG protein using Western blot technique and by immunohistochemistry for tissue distribution of beta-DG, MMP-3, -9, -13, and ADAMTS-4.
      Results: beta-DG was detected in the smooth muscle of both normal and osteoarthritic synovial blood vessels. Importantly, beta-DG was detected in endothelium of blood vessels of OA synovium, but not in the control endothelium. In the endothelium of osteoarthritic synovial blood vessels, beta-DG co-localised with MMP-3 and -9. MMP-13 and ADAMTS-4 showed no endothelial staining, and only weak staining of the vascular smooth muscle was found. In contrast, we did not detect beta-DG protein in cartilage or synovial fluid.
      Conclusions: beta-DG has been shown to have a role in angiogenesis, and our results demonstrate for the first time that there are clear differences in beta-DG staining between OA and control synovial blood vessels. The specific immunolocalisation of beta-DG within endothelium of inflamed OA blood vessels and its co-localisation with MMP-3 and -9, reported to have pro-angiogenic roles and believed to be involved in beta-DG cleavage, may also suggest that beta-DG plays a role in angiogenesis accompanying OA.
    • Accession Number:
      0 (DAG1 protein, human)
      146888-27-9 (Dystroglycans)
      EC 3.4.24.- (ADAM Proteins)
      EC 3.4.24.- (Matrix Metalloproteinase 13)
      EC 3.4.24.- (Matrix Metalloproteinases)
      EC 3.4.24.14 (Procollagen N-Endopeptidase)
      EC 3.4.24.17 (Matrix Metalloproteinase 3)
      EC 3.4.24.35 (Matrix Metalloproteinase 9)
      EC 3.4.24.82 (ADAMTS4 Protein)
      EC 3.4.24.82 (ADAMTS4 protein, human)
    • Publication Date:
      Date Created: 20060609 Date Completed: 20070118 Latest Revision: 20211116
    • Publication Date:
      20250114
    • Accession Number:
      10.1016/j.joca.2006.04.012
    • Accession Number:
      16759884