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T-cell tumor necrosis factor-alpha receptor binding in patients with multiple sclerosis
1Department of Neurosciences, University of Pisa, Italy.
Neurology
|April 1, 1997
Summary
Multiple Sclerosis (MS) patients show significantly higher levels of Tumor Necrosis Factor alpha (TNF-alpha) receptors on T cells compared to healthy individuals. This finding offers insights into MS immunopathogenesis and altered immunoregulation.
Area of Science:
- Neuroimmunology
- Immunology
- Cell Biology
Background:
- Multiple Sclerosis (MS) is a T-cell-mediated demyelinating disease of the Central Nervous System (CNS).
- Cytokine network derangement and altered immunoregulation are implicated in MS pathogenesis.
- Tumor Necrosis Factor alpha (TNF-alpha) is a key cytokine affecting the neuroimmune system.
Purpose of the Study:
- To investigate the expression of TNF-alpha receptors on peripheral blood T cells in patients with MS.
- To compare TNF-alpha receptor binding in MS patients versus healthy subjects.
Main Methods:
- Assay of TNF-alpha binding on peripheral blood T cells.
- Comparison of receptor binding kinetics (Bmax and Kd) between MS patients and healthy controls.
Main Results:
- T cells from MS patients exhibited significantly higher TNF-alpha receptor numbers (Bmax: 955 +/- 31) compared to healthy subjects (Bmax: 126 +/- 3).
- The type of TNF-alpha binding sites was consistent between MS patients and controls, indicated by similar dissociation constants (Kd).
Conclusions:
- Activated T cells in MS patients display an increased number of TNF-alpha receptors.
- Elevated TNF-alpha receptor expression on T cells may contribute to MS immunopathogenesis and altered immunoregulation.