Vitamin D status in children with chronic kidney disease

Deborah R Stein1, Henry A Feldman, Catherine M Gordon

  • 1Department of Pediatrics, Children's Hospital Boston, Boston, MA, USA. deborah.stein@childrens.harvard.edu

Insights

Vitamin D deficiency is common in children with chronic kidney disease (CKD). Optimizing vitamin D levels may help manage hyperparathyroidism in pediatric CKD patients.

Area of Science:

  • Pediatric Nephrology
  • Endocrinology
  • Nutritional Science

Background:

  • Disordered mineral metabolism in chronic kidney disease (CKD) is linked to significant morbidity and mortality.
  • Vitamin D status, dietary intake, and parathyroid hormone (PTH) secretion are critical in CKD patients.

Purpose of the Study:

  • To investigate vitamin D status and its relationship with PTH in pediatric CKD patients.
  • To assess the prevalence of vitamin D deficiency and insufficiency in this population.

Main Methods:

  • Cross-sectional study of 100 pediatric CKD patients (stages 1-5).
  • Measured serum levels of 25-hydroxyvitamin D [25(OH)D] and 1,25-dihydroxyvitamin D [1,25(OH)(2)D].
  • Collected data on parathyroid hormone (PTH) levels and nutrient intake.

Main Results:

  • 40% of patients had suboptimal serum 25(OH)D levels (deficient or insufficient).
  • No correlation was found between serum 25(OH)D and dietary vitamin D intake.
  • A significant relationship was observed between 25(OH)D and PTH levels.

Conclusions:

  • High prevalence of hyperparathyroidism in early-stage pediatric CKD.
  • Optimizing vitamin D levels may help prevent or improve hyperparathyroidism in early CKD.
  • Vitamin D optimization is likely important as adjunctive therapy in advanced pediatric CKD.
Abstract

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