Document Detail

Tenascin-C concentration in synovial fluid correlates with radiographic progression of knee osteoarthritis.
MedLine Citation:
PMID:  15468369     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Osteoarthritis (OA) is a major cause of disability and represents the most common disease in the aging population. Although the course of the disease is generally assessed using standard radiographic images, biochemical markers may be employed to detect the disease and determine the degree of severity. We developed an enzyme linked immunosorbent assay (ELISA) system using a monoclonal antibody specific for the large-splice variants of tenascin-C (TN-C) and examined whether TN-C in synovial fluid (SF) is an adequate biochemical marker of OA progression. METHODS: SF samples were obtained from knees of 74 patients with OA and 16 without OA. Based on the radiographic grading of the OA severity, the knees were divided into 3 groups: mild, moderate, and severe OA. Expression of TN-C splice variants was examined using immunoblotting. TN-C concentrations were determined by ELISA. RESULTS: Western blotting showed the presence of large TN-C variants in SF from severe OA. TN-C levels were 5-fold higher in OA samples compared to subjects without OA (p < 0.0001). TN-C levels were not different between control cases and mild OA, but increased significantly in moderate (p = 0.0244) and severe OA (p < 0.0001). After adjusting TN-C levels for age, body mass index, and sex, TN-C levels correlated with radiographic progression of knee OA (R2 = 0.404, p < 0.0001). CONCLUSION: TN-C, including the large-variant subunits, is a useful biochemical marker for OA progression in the later stages of disease.
Masahiro Hasegawa; Hitoshi Hirata; Akihiro Sudo; Kou Kato; Daisuke Kawase; Noriaki Kinoshita; Toshimichi Yoshida; Atsumasa Uchida
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of rheumatology     Volume:  31     ISSN:  0315-162X     ISO Abbreviation:  J. Rheumatol.     Publication Date:  2004 Oct 
Date Detail:
Created Date:  2004-10-06     Completed Date:  2005-07-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7501984     Medline TA:  J Rheumatol     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  2021-6     Citation Subset:  IM    
Department of Orthopaedic Surgery, Mie University Faculty of Medicine, Mie, Japan.
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MeSH Terms
Aged, 80 and over
Antibodies, Monoclonal / metabolism
Biological Markers
Disease Progression
Enzyme-Linked Immunosorbent Assay
Middle Aged
Osteoarthritis, Knee* / metabolism,  pathology,  radiography
Synovial Fluid / metabolism*
Tenascin / metabolism*
Reg. No./Substance:
0/Antibodies, Monoclonal; 0/Biological Markers; 0/Tenascin

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