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KMID : 1036920180230010021
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Annals of Pediatric Endocrinology & Metabolism
2018 Volume.23 No. 1 p.21 ~ p.27
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Low levels of 25-hydroxyvitamin D in children and adolescents with type 1 diabetes mellitus: a single center experience
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Bae Ki-Nam
Nam Hyo-Kyoung
Rhie Young-Jun
Song Dae-Jin
Lee Kee-Hyoung
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Abstract
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Purpose: Low vitamin D level is common in adults with diabetes mellitus (DM). We assessed vitamin D level and its associated factors in Korean youth with type 1 DM.
Methods: Type 1 DM cases (n=85) and healthy controls (n=518) aged <20 years were included and grouped into 3 categories according to vitamin D level: deficiency (<20 ng/mL), insufficiency (20?30 ng/mL), or sufficiency (≥30 ng/mL).
Results: The mean serum vitamin D level was significantly lower (21.6±8.5 ng/mL vs. 28.0±12.0 ng/mL, P<0.001) and vitamin D deficiency prevalence was significantly higher (48% vs. 26%, P<0.001) in type 1 DM cases than in healthy controls. Logistic regression analysis revealed that type 1 DM cases were more likely to have vitamin D deficiency (P=0.004), independent of sex, age, and body mass index. Type 1 DM cases with vitamin D deficiency/insufficiency were mainly diagnosed in winter (November to April) (P=0.005), and the duration of diabetes was longer than in those with vitamin D sufficiency (P=0.046). However, season of diagnosis, duration of diabetes, prescribed daily insulin dose, and glycosylated hemoglobin and C-peptide levels were not associated with 25-hydroxyvitamin D (25(OH)D) level in type 1 DM cases after adjustment for other factors.
Conclusions: We recommend assessment of serum 25(OH)D level in type 1 DM cases and to treatment if findings indicate insufficiency. Further studies investigating the mechanisms underlying vitamin D deficiency in youth with type 1 DM are needed.
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KEYWORD
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Diabetes mellitus, Type 1, Vitamin D deficiency, Child, Case-control studies
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