Assessment of 25(OH)D vitamin concentration in plasma of residents of Lodz with metabolic syndrome in pre- and postmenopausal period

INTRODUCTION Vitamin D deficiency is a risk factor for metabolic syndrome disorders and the occurrence of these disorders greatly contributes to the deficiency of vitamin D. Postmenopausal women are particularly prone to that deficiency. AIM The aim of the study was to assess vitamin D concentration in the plasma of pre- and postmenopausal women, with or without metabolic syndrome. MATERIAL AND METHODS The study included 141 women aged 26-77 (the mean age 58.74 years old), divided into 4 groups depending on the pre- or postmenopausal period and diagnosed or not with metabolic syndrome according to the International Diabetes Federation criteria (2005). Vitamin D concentration was assessed by LIAISON(®) test using chemiluminescent immunoassay (CLIA) technology. RESULTS The mean vitamin D concentration was the highest among premenopausal women without metabolic syndrome (24.32 ng/ml), it was insignificantly higher than in postmenopausal women without metabolic syndrome (23.52 ng/ml) and significantly higher than in both groups with metabolic syndrome - premenopausal (19.86 ng/ml) and postmenopausal women (9.32 ng/ml). The recommended plasma 25(OH)D concentration was not found in any of postmenopausal women with diagnosed metabolic syndrome. CONCLUSIONS Postmenopausal women with metabolic syndrome had a significantly lower 25(OH)D vitamin concentration in plasma than postmenopausal women without metabolic syndrome. The frequency of vitamin D deficiency in women with metabolic syndrome was very high, significantly higher than in women without metabolic syndrome.