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Multiple sclerosis: circulating antigen-reactive lymphocytes
Abstract:
Circulating lymphocyte populations were examined in 85 patients with multiple sclerosis (MS), 26 of whom showed exacerbations; 48 patients with other neurological diseases (OND); 14 patients suffering from psychiatric disorders; and 2 normal subjects. The study involved the assay of early (active, high-affinity rosetting) T-cells, myelin basic protein (MBP)-reactive early T-cells, late (total, 24-hour rosetting) T-cell levels were significantly lower in MS (p less than 0.01) than in OND subjects. Exacerbations in MS were usually accompanied by further decreases in early T-cells. The lower levels of early T-cells in MS and their fluctuations are believed to reflect disease activity. MBP-reactive early T-cells were more frequently increased in MS (75% of cases) than OND (50%), and while this might be indicative of increased sensitization against myelin antigens, it was found not to be an MS-specific phenomenon.
Insights
Multiple sclerosis patients have significantly lower levels of early T-cells, indicating disease activity. Fluctuations in these T-cells, particularly during exacerbations, further support their role in multiple sclerosis (MS) progression.
Area of Science:
- Immunology
- Neurology
Background:
- Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system.
- Understanding circulating lymphocyte populations, particularly T-cells, is crucial for monitoring MS activity.
Purpose of the Study:
- To investigate circulating T-cell populations in patients with multiple sclerosis (MS) compared to other neurological diseases (OND) and psychiatric disorders.
- To assess the correlation between T-cell levels, myelin basic protein (MBP) reactivity, and MS disease activity, including exacerbations.
Main Methods:
- Assay of early (active, high-affinity rosetting) T-cells and late (total, 24-hour rosetting) T-cell levels.
- Measurement of myelin basic protein (MBP)-reactive early T-cells.
- Comparison of T-cell populations across patient groups: MS (n=85), OND (n=48), psychiatric disorders (n=14), and normal subjects (n=2).
Main Results:
- Significantly lower levels of early T-cells were observed in MS patients compared to OND patients (p < 0.01).
- Exacerbations in MS were typically associated with further decreases in early T-cell counts.
- MBP-reactive early T-cells were increased in a higher percentage of MS cases (75%) versus OND cases (50%), but this was not specific to MS.
Conclusions:
- Lower and fluctuating levels of early T-cells in MS patients are likely reflective of disease activity.
- While increased MBP-reactive T-cells suggest sensitization to myelin antigens in MS, this finding is not exclusive to the disease.