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Effects of vitamin D repletion on glycemic control and inflammatory cytokines in adolescents with type 1 diabetes.
Shih, Erin M; Mittelman, Steven; Pitukcheewanont, Pisit; Azen, Colleen G; Monzavi, Roshanak.
Afiliación
  • Shih EM; Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA.
  • Mittelman S; Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA.
  • Pitukcheewanont P; Keck School of Medicine, University of Southern California, Los Angeles, CA, 90027, USA.
  • Azen CG; Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA.
  • Monzavi R; Keck School of Medicine, University of Southern California, Los Angeles, CA, 90027, USA.
Pediatr Diabetes ; 17(1): 36-43, 2016 Feb.
Article en En | MEDLINE | ID: mdl-25524404
OBJECTIVE: Little is known about the relationship between vitamin D deficiency and adolescents with type 1 diabetes. On the basis of adult studies showing that vitamin D improves insulin sensitivity and decreases inflammatory cytokines linked to microvascular complications, we hypothesized that treating vitamin D deficiency in adolescents with type 1 diabetes would improve glycemia and reduce inflammatory markers. RESEARCH DESIGN AND METHODS: This was a randomized, prospective, crossover study of 25 adolescents with type 1 diabetes for at least a year (aged: 13-21 yr; 62% female; 62% Hispanic) and vitamin D deficiency (25-OH vitamin D ≤30 ng/mL). Subjects received vitamin D3 (20 000 IU/week) for 6 months, either immediately or after 6 months of observation. RESULTS: At baseline, 63% of subjects screened were vitamin D deficient and randomized. Interleukin-6 (IL-6) was significantly higher in the vitamin D deficient group compared with the sufficient group (medians: 0.36 vs. 0.18) (p = 0.026), whereas neither C-reactive protein (CRP) nor tumor necrosis factor-α (TNF-α) differed. Vitamin D treatment increased serum levels of 25-OH vitamin D from 22 ± 5.3 to 34.3 ± 12.1 ng/mL (p < 0.01). However, treatment did not affect glycated hemoglobin (HbA1c), insulin dosage, CRP, interleukin-6 (IL-6), or TNF-α. CONCLUSIONS: Vitamin D deficiency is prevalent in the adolescent type 1 diabetes population, and could be associated with changes in inflammatory markers. However, vitamin D repletion over 6 months did not affect glycemia or markers of inflammation in our study, highlighting the need for additional research to validate these findings.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Deficiencia de Vitamina D / Glucemia / Citocinas / Colecalciferol / Diabetes Mellitus Tipo 1 / Inflamación Tipo de estudio: Clinical_trials / Observational_studies / Risk_factors_studies Límite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: Pediatr Diabetes Asunto de la revista: ENDOCRINOLOGIA Año: 2016 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Dinamarca
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Deficiencia de Vitamina D / Glucemia / Citocinas / Colecalciferol / Diabetes Mellitus Tipo 1 / Inflamación Tipo de estudio: Clinical_trials / Observational_studies / Risk_factors_studies Límite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: Pediatr Diabetes Asunto de la revista: ENDOCRINOLOGIA Año: 2016 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Dinamarca