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Increased interleukin-1 production by peripheral blood mononuclear cells in patients with multiple sclerosis
Abstract:
The production of interleukin-1 (IL-1) by peripheral blood mononuclear cells (MNC) was assessed in patients with relapsing multiple sclerosis (MS) in both the active and inactive phase, in chronic progressive MS patients, in other neurological diseases, and in healthy subjects. Production was determined by measuring the IL-1 concentration in cultures with MNC supernatants using enzyme-linked immunosorbent assay (ELISA). IL-1 in sera of MS patients and healthy subjects also was investigated. MNC IL-1 alpha production was significantly higher in MS patients (180.2 +/- 177.5 pg/ml) than in healthy subjects (66.2 +/- 66.0 pg/ml) (P less than 0.05). Relapsing MS patients in the active phase had significantly higher MNC IL-1 alpha concentrations (360.1 +/- 130.0 pg/ml) than normal subjects (P less than 0.001), but MNC IL-1 alpha production in patients with relapsing MS in the inactive phase (65.3 +/- 52.8 pg/ml) or chronic progressive MS (80.9 +/- 71.9 pg/ml) was not increased significantly. MNC IL-1 beta production in MS patients was not elevated significantly. IL-1 alpha and -1 beta were not detected in sera of MS patients. The correlation between increased IL-1 alpha production and the clinical course of MS suggests that activated MNC may play a role in the pathogenesis of MS.
Insights
Interleukin-1 alpha (IL-1) production by mononuclear cells (MNC) is elevated in multiple sclerosis (MS) patients, particularly during active relapse. This suggests activated MNC may contribute to MS pathogenesis.
Area of Science:
- Immunology
- Neuroscience
- Biochemistry
Background:
- Multiple Sclerosis (MS) is a chronic neurological disease characterized by immune-mediated damage to the central nervous system.
- Interleukin-1 (IL-1) is a pro-inflammatory cytokine implicated in various autoimmune and inflammatory conditions.
- The role of IL-1 in the pathogenesis of MS requires further elucidation.
Purpose of the Study:
- To investigate the production of Interleukin-1 (IL-1) by peripheral blood mononuclear cells (MNC) in patients with different forms of multiple sclerosis (MS).
- To compare IL-1 levels in active and inactive phases of relapsing MS, chronic progressive MS, other neurological diseases, and healthy controls.
- To explore the potential correlation between IL-1 production and the clinical course of MS.
Main Methods:
- Peripheral blood mononuclear cells (MNC) were isolated from MS patients and healthy subjects.
- IL-1 alpha and IL-1 beta concentrations in MNC culture supernatants were measured using enzyme-linked immunosorbent assay (ELISA).
- IL-1 levels in patient and control sera were also analyzed.
Main Results:
- MNC IL-1 alpha production was significantly higher in MS patients compared to healthy subjects.
- Active relapsing MS patients exhibited significantly elevated MNC IL-1 alpha concentrations compared to controls.
- MNC IL-1 alpha production was not significantly increased in inactive relapsing MS or chronic progressive MS patients; IL-1 beta levels and serum IL-1 were not significantly elevated.
Conclusions:
- Elevated MNC IL-1 alpha production, especially during active MS relapses, suggests a role for activated MNC in MS pathogenesis.
- IL-1 alpha may be a contributing factor to the inflammatory processes underlying multiple sclerosis.
- Further research is warranted to explore therapeutic strategies targeting IL-1 in MS.