Association between serum 25-hydroxyvitamin D concentrations and prevalence of metabolic syndrome

Abstract

Purpose: There is now good evidence that 25-hydroxyvitamin D (25OHD) status may have an important impact on the development and progression of cardiovascular disease. Because of the potential involvement of vitamin D deficiency in blood pressure control and immune responses, we aimed to investigate whether there was a relationship between 25OHD status and the prevalence of metabolic syndrome in an Iranian population.

Material/methods: The study was carried out on a sample of 846 subjects [357(42.19%) males and 489(57.80%) females], derived from MASHAD STUDY. Serum 25OHD levels were measured using a competitive electroluminescence protein binding assay. Anthropometric indices were measured using standard protocols.

Results: Serum 25OHD was 12.7 (6.8-18.4) ng/ml in the metabolic syndrome (MetS) group and 14.1 (8.8-19.0) ng/ml in the group without metabolic syndrome (P=0.43). The frequency of vitamin D deficiency was 80.7% and 79.0% in subjects with or without metabolic syndrome in Iranian population.

Conclusions: We found no significant difference in serum 25OHD concentrations between individuals with or without MetS and no significant linear relationship between serum 25OHD and several CVD risk factors.

Keywords: 25OHD; Iran; Vitamin D deficiency.