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Soluble CD4 and CD8 molecules in patients with systemic sclerosis
1Department of Internal Medicine and Immunology, Juntendo University, School of Medicine, Tokyo, Japan.
Clinical Rheumatology
|December 1, 1993
Summary
Systemic sclerosis (SSc) patients show altered levels of soluble CD4 and CD8 T-cells. Specifically, sCD8 levels are elevated, while sCD4 levels are decreased in individuals with SSc compared to healthy controls.
Area of Science:
- Immunology
- Rheumatology
- Biochemistry
Background:
- Systemic sclerosis (SSc) is an autoimmune disease characterized by fibrosis.
- Immune system dysregulation plays a role in SSc pathogenesis.
- Soluble immune markers like sCD4 and sCD8 may indicate disease activity.
Purpose of the Study:
- To quantify and compare serum concentrations of soluble CD4 (sCD4) and soluble CD8 (sCD8) in patients with SSc versus healthy controls.
- To investigate potential correlations between sCD4/sCD8 levels and SSc subtypes.
Main Methods:
- Sandwich enzyme-linked immunosorbent assay (ELISA) was employed to measure sCD4 and sCD8 concentrations.
- Serum samples were analyzed from 69 patients diagnosed with SSc and a control group of healthy subjects.
Main Results:
- Patients with SSc exhibited significantly higher concentrations of sCD8 compared to normal subjects (mean 249.2 U/ml vs. 149.3 U/ml).
- Conversely, sCD4 concentrations were significantly lower in SSc patients than in controls (mean 6.2 U/ml vs. 10.9 U/ml).
- Elevated sCD8 levels showed a trend towards being higher in patients with diffuse SSc compared to those with sclerodactyly.
Conclusions:
- Serum sCD8 levels are elevated, and sCD4 levels are decreased in patients with systemic sclerosis.
- These findings suggest a potential role for T-cell immune dysregulation in SSc.
- Further research is warranted to explore the diagnostic and prognostic value of sCD4 and sCD8 in SSc.