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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Expression of matrix metalloproteinase-2 in osteoarthritic fibrocartilage from human mandibular condyle.

Matrix metalloproteinase (MMP)-2 is expressed in osteoarthritic cartilage and synovial fluid and is thought to be involved in the degradation of cartilage extracellular matrix. However, MMP-2 expression and osteoarthritic changes in internal derangement of the temporomandibular joint are unknown. In the present study, we have examined the histological relationship between osteoarthritic changes on articular cartilage with or without articular disc perforation, and MMP-2 expression, in 85 mandibular condyles from cadavers. The expression and tissue immunolocalization of MMP-2 in fibrocartilages from these condyles was examined histochemically. The Mankin grade of histological criteria for specimens with disc perforation was significantly higher than that of specimens without perforation. MMP-2 immunostaining was positive in the cytoplasm of chondrocytes and in their surrounding matrix. There was a linear correlation between MMP-2-positive cell rates and Mankin grade. Our data suggest that MMP-2 plays an important role in fibrocartilage degradation in internal derangement of the temporomandibular joint.[1]

References

  1. Expression of matrix metalloproteinase-2 in osteoarthritic fibrocartilage from human mandibular condyle. Tanaka, A., Kawashiri, S., Kumagai, S., Takatsuka, S., Narinobou, M., Nakagawa, K., Tanaka, S. J. Oral Pathol. Med. (2000) [Pubmed]
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