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Updated: Aug 3, 2026
08:07
A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
Published on: January 11, 2018
Inflammation and bony changes at the temporomandibular joint
M A Kacena1, G A Merrel, S R Konda
1Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Conn. 06520-8071, USA.
Cells, Tissues, Organs
|July 17, 2001
Summary
Cytokine levels in temporomandibular disorder (TMD) patients show increased pro-inflammatory cytokines and Interleukin-1 receptor antagonist (IL-1ra), but unchanged Interleukin-10 (IL-10). This imbalance may drive osteoarthritis progression in TMD.
Area of Science:
- Immunology
- Rheumatology
- Oral and Maxillofacial Surgery
Background:
- Cytokines mediate inflammation and connective tissue destruction in arthritic temporomandibular joints (TMJ).
- Pro-inflammatory cytokines like TNF-alpha, IL-1beta, IL-6, IL-8, and IFN-gamma are implicated in synovial joint inflammation and tissue damage.
- Inhibitory cytokines, including IL-1ra and IL-10, counteract pro-inflammatory effects.
Purpose of the Study:
- To investigate cytokine profiles in patients with temporomandibular disorders (TMD).
- To determine if elevated pro-inflammatory cytokines and altered levels of IL-1ra and IL-10 correlate with TMD pathology.
- To understand the role of cytokine balance in the exacerbation of osteoarthritis in TMD.
Main Methods:
- Review of multiple investigator studies on cytokine levels in TMD patients.
- Analysis of synovial fluid cytokine concentrations.
- Correlation of cytokine levels with inflammation and connective tissue degradation.
Main Results:
- TMD patients exhibit increased levels of pro-inflammatory cytokines (TNF-alpha, IL-1beta, IL-6, IL-8).
- Interleukin-1ra (IL-1ra) levels are also elevated in TMD patients.
- Interleukin-10 (IL-10) levels remain unchanged in TMD patients.
- Elevated pro-inflammatory cytokines and insufficient IL-1ra and IL-10 contribute to inflammation and osteoarthritis in TMD.
Conclusions:
- TMD involves an imbalance between pro-inflammatory and inhibitory cytokines.
- The lack of IL-10 increase, despite elevated pro-inflammatory cytokines, may exacerbate osteoarthritis in TMD.
- Effective TMD treatment may necessitate restoring the balance between pro-inflammatory cytokines and inhibitors like IL-1ra and IL-10.
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