Vitamin D Deficiency in Children and Adolescents with Type 1 Diabetes
Journal Title: Journal of Clinical Research in Pediatric Endocrinology - Year 2011, Vol 3, Issue 4
Abstract
Ob­jec­ti­ve: To investigate the frequency and effects of vitamin D deficiency in children with type 1 diabetes (T1D) in a region which is known to have a high rate of vitamin D deficiency among adolescents. Met­hods: In this prospective cross-sectional study, 120 children and adolescents with T1D (55 girls and 65 boys) aged 3-20 years were evaluated. Serum 25-hydroxyvitamin D [25(OH)D], parathormone (PTH), and alkaline phosphatase (ALP) levels were measured. Hemoglobin A1c levels and daily insulin requirement were also evaluated. Classification of vitamin D status was made according to the American Academy of Pediatrics (AAP)/LWEPS’s recommendations. The patients were divided into 2 groups according to their vitamin D status and also according to the season of the year in which 25(OH)D sampling was done. Re­sults: Serum 25(OH)D levels revealed vitamin D deficiency or insufficiency in 38% of the patients. Higher PTH levels were found in the patient group whose mean 25(OH)D level was <20 ng/mL as compared to the group whose mean 25(OH)D level was >20 ng/mL (p<0.05). Only 11% of patients had secondary hyperparathyroidism. The 25(OH)D levels of patients whose serum samples were taken in summer and spring months were significantly different (p<0.05). There were no significant correlations between 25(OH)D level and daily insulin dose. Conc­lu­si­on: Although we could not show a significant association between vitamin D deficiency and metabolic parameters, the frequency of vitamin D deficiency in T1D children is substantial. Vitamin D status should be assessed also in patients who do not have signs of rickets.
Authors and Affiliations
Ajda Mutlu, Gül Yeşiltepe Mutlu, Elif Özsu, Filiz Mine Çizmecioğlu, Şükrü Hatun
Keywords
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