Vitamin D Deficiency and Immune Disorders in Combined Endocrine Pathology

Area of Science:

• Endocrinology
• Immunology
• Metabolic Disorders

Background:

• Combined endocrine pathologies, including diabetes mellitus (DM) and autoimmune thyroiditis (AIT), pose significant health challenges.
• Low levels of 25-hydroxyvitamin D [25(OH)D] are frequently observed in patients with these combined conditions.
• The interplay between vitamin D status, metabolic control, and immune function in DM + AIT patients requires further elucidation.

Purpose of the Study:

• To evaluate the relationship between vitamin D status, metabolic markers, and immune profiles in patients with type 1 or type 2 DM and AIT.
• To assess the impact of vitamin D3 supplementation on these parameters in the studied patient cohort.

Main Methods:

• Prospective study involving 60 patients with DM (T1DM or T2DM) and AIT, all with decreased 25(OH)D levels.
• Measurement of carbohydrate and fat metabolism markers, and immune markers including Th1 (IFN-γ, TNF-α, IL-2, IL-6, IL-12), Th2 (IL-4, IL-5), IL-10, and IL-17 cytokines.
• Comparison of these markers before and after a vitamin D3 supplementation intervention.

Main Results:

• Patients with DM + AIT and vitamin D deficiency exhibited elevated Th1 cytokines and reduced Th2 cytokines (IL-4, IL-5), IL-10, and IL-17.
• Vitamin D3 supplementation led to a decrease in pro-inflammatory Th1 cytokines and an increase in Th2 cytokines.
• Significant improvements were observed in blood 25(OH)D levels, correlating with changes in autoimmunity parameters and glucose metabolism.

Conclusions:

• Combined endocrine diseases, particularly when associated with vitamin D deficiency, significantly alter immune status and contribute to autoimmune inflammation and disease progression.
• Vitamin D deficiency is implicated in exacerbating the autoimmune inflammatory process and complications in patients with DM and AIT.
• Vitamin D3 supplementation demonstrates potential as a therapeutic strategy for managing combined endocrine pathology by positively influencing immune function and metabolic parameters.