Immunomodulating Effects of Supplementation With 25-OH Vitamin D

Introduction. The thickening fibrotic of the skin in systemic sclerosis (SSc) could reduce endogenous availability of Vitamin D by sun exposition. Vitamin D hypovitaminosis have been described in high prevalence in autoimmune disease as SSc. The cholecalciferol contributes to improve the balance TH1/Th2/Treg in favor anti-inflammation and anti-fibrotic profile. Aim. to analyze the effect(s) of short-term cholecalciferol supplementation on cytokine profile in Th1, Th2, and Treg cells subpopulations in SSc patients. Method. Randomized clinical trial conduct in patients with SSc (ACR-EULAR 2015) who signed informed consent. General characteristics, severity of organ involvement scored by Medsger disease severity scale (MsDSS) and cytokine Th1, Th2 and Treg will be determinate. All data will be analyzed using SPSS software. It will be used parametric statistics for normally distributed variables and nonparametric statistics for free distribution.