25 Hydroxyvitamin D and Cytokine Profile in Patients With Relapsing-Remitting Multiple Sclerosis

Area of Science:

• Neuroimmunology
• Clinical immunology

Background:

• Axonal loss in experimental allergic encephalomyelitis and multiple sclerosis (MS) is linked to cytotoxic T-cells (CD8 T) and inflammatory activity.
• Understanding cytokine dynamics is crucial for elucidating MS pathological mechanisms.

Purpose of the Study:

• To evaluate serum pro- and anti-inflammatory cytokine concentrations during relapse and remission in patients with relapsing-remitting MS.
• To assess the relationship between cytokine levels, disease activity, and disability.

Main Methods:

• A case-control study involving 46 MS patients and 40 healthy controls.
• Serum cytokine levels measured using enzyme-linked immunosorbent assay (ELISA).
• Correlation analysis between cytokine levels, Expanded Disability Status Scale (EDSS), and 25-hydroxyvitamin D (25(OH)D).

Main Results:

• Significant immune imbalance observed in MS patients compared to controls.
• Elevated interferon-gamma (IFN-γ) during relapse (p=0.017).
• Increased transforming growth factor-beta (TGF-β) and interleukin 4 (IL4) during remission (p=0.006; p=0.009).
• Correlation between tumor necrosis factor-alpha (TNF-α) and EDSS during relapse (p=0.042).
• Moderate relationship between interleukin 17 (IL17) and 25-hydroxyvitamin D (25(OH)D) during exacerbation (p=0.02).

Conclusions:

• Serum levels of TNF-α, IFN-γ, IL17, and TGF-β serve as indicators of immune inflammatory activity in MS relapse and remission.
• Cytokine profiles reflect disease status and potential therapeutic targets.