Background The main function of VitD was historically linked with Ca/P03 metabolism and
bone homeostasis, but recent research data have shown its major role in modulating the …

Background Vitamin D has immunomodulatory effects in a wide range of human
autoimmune diseases; including Rheumatoid Arthritis (RA). Vitamin D deficiency is common …

Background The purpose of the study was to define the associations between serum level of
25-hydroxyvitamin D (25 (OH) D) and disease activity in patients with rheumatoid arthritis …

Abstract Introduction Rheumatoid Arthritis (RA) is one of the most prevalent autoimmune
diseases. Due to the significance of the relationship between serum vitamin D levels and …

Background Vitamin D plays an important role in the modulation of immune system and
epidemiologic data indicate low vitamin D levels in autoimmune diseases such as …

Background: The aim was to validate the association between Vitamin D level and
rheumatoid arthritis (RA); evaluate association of stages of disease activity with various …

Funding This study was facilitated by the Clinical Research Bureau of the Jan van Breemen
Institute which receives financial support from the Dutch Arthritis Association. MJP received …

Background Vitamin D (25 (OH) D) deficiency seems a distinct risk factor influencing
prevalence and severity of several autoimmune diseases. Several studies suggest that low …

Background Epidemiological evidence indicates a significant association between vitamin D
deficiency and an increased incidence of several autoimmune diseases. Low vitamin D …

Aim The present study was carried out in order to check the potential relationship between
the level of vitamin D and RA severity. Materials and Methods Ninety-three patients with RA …