eISSN: 1896-9151
ISSN: 1734-1922
Archives of Medical Science
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vol. 14
Clinical research

Vitamin D deficiency is associated with urinary tract infection in children

Sherein Abdelhamid Shalaby, Nesrein Mosad Handoka, Rasha Emad Amin

Arch Med Sci 2018; 14, 1: 115–121
Online publish date: 2016/10/26
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Introduction: In humans, vitamin D has been shown to play a role in infectious diseases, but its association with acquisition and a complicated course of febrile urinary tract infections (UTIs) has not been investigated. We aimed to investigate the association between 25-hydroxyvitamin D (25(OH)D3) levels and the risk of first time febrile UTI in children.

Material and methods: This prospective case-control study included 50 children with first febrile UTI, with no risk factors for UTI, and 50 age- and sex-matched healthy siblings as controls. White blood cell count, serum C-reactive protein, calcium, phosphorus, alkaline phosphatase and parathormone were measured in all studied children. Vitamin D status was determined by measuring plasma 25(OH)D3 level. Deficiency was defined as a plasma 25(OH)D3 level ≤ 25 nmol/l.

Results: Children with UTI had significantly lower mean serum levels of 25(OH)D3 (10.5 ±2.7 nmol/l) than those of controls (25.9 ±5.6 nmol/l) (p < 0.05). Patients with lower UTI had significantly higher serum levels of 25(OH)D3 compared to those with acute pyelonephritis (12.4 ±2.59 vs. 8.2 ±3.2 nmol/l; p < 0.001). Mean serum levels of 25(OH)D3 were significantly lower (p = 0.001) in the female patients compared with males, and this difference was not found within the control group. Multivariate analysis showed that a serum 25(OH)D3 level of ≤ 25 nmol/l is associated with UTI (OR = 1.94, 95% CI: 1.61–2.82; p = 0.04).

Conclusions: Vitamin D deficiency (≤ 25 nmol/l) was an independent risk factor for UTI in children.

children, urinary tract infection, 25-hydroxyvitamin D, vitamin D deficiency

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