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Cytokine. 2014 Dec;70(2):185-93. doi: 10.1016/j.cyto.2014.06.019. Epub 2014 Jul 24.

Osteoarthritis joint pain: the cytokine connection.

Author information

1
Departments of Internal Medicine (Division of Rheumatology) and Biochemistry, Rush University Medical Center, Chicago, IL 60612, United States.
2
Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, 303 East Chicago Avenue, Chicago, IL 60611, United States.
3
Departments of Internal Medicine (Division of Rheumatology) and Biochemistry, Rush University Medical Center, Chicago, IL 60612, United States. Electronic address: anne-marie_malfait@rush.edu.

Abstract

Osteoarthritis is a chronic and painful disease of synovial joints. Chondrocytes, synovial cells and other cells in the joint can express and respond to cytokines and chemokines, and all of these molecules can also be detected in synovial fluid of patients with osteoarthritis. The presence of inflammatory cytokines in the osteoarthritic joint raises the question whether they may directly participate in pain generation by acting on innervating joint nociceptors. Here, we first provide a systematic discussion of the known proalgesic effects of cytokines and chemokines that have been detected in osteoarthritic joints, including TNF-α, IL-1, IL-6, IL-15, IL-10, and the chemokines, MCP-1 and fractalkine. Subsequently, we discuss what is known about their contribution to joint pain based on studies in animal models. Finally, we briefly discuss limited data available from clinical studies in human osteoarthritis.

KEYWORDS:

Animal models; Chemokines; Cytokines; Osteoarthritis; Pain

PMID:
25066335
PMCID:
PMC4254338
DOI:
10.1016/j.cyto.2014.06.019
[Indexed for MEDLINE]
Free PMC Article

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