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Erschienen in: Pediatric Nephrology 2/2021

19.07.2020 | Original Article

Vitamin C deficiency and impact of vitamin C administration among pediatric patients with advanced chronic kidney disease

verfasst von: Nattaphorn Hongsawong, Notethasoung Chawprang, Kulnipa Kittisakmontri, Parach Vittayananan, Konggrapun Srisuwan, Wattana Chartapisak

Erschienen in: Pediatric Nephrology | Ausgabe 2/2021

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Abstract

Background

Vitamin C deficiency is common in chronic kidney disease (CKD) due to losses through dialysis and dietary intake below requirement. We investigated prevalence of vitamin C deficiency and impact of vitamin C treatment in deficient/insufficient patients.

Methods

A prospective cohort study in patients aged 1–18 years with CKD stages 4 and 5D collected demographic data including underlying disease, treatment, and anthropometric assessment. Vitamin C intake was assessed using 24-h dietary recall. Hemoglobin, iron status, serum vitamin C, and serum oxalate were measured at baseline and after treatment. Vitamin C (250 mg/day) was given orally for 3 months to deficient/insufficient patients.

Results

Nineteen patients (mean age 12.00 ± 4.1 years) showed prevalence of 10.6% vitamin C insufficiency and 78.9% deficiency. There were no associations between vitamin C level and daily vitamin C intake (p = 0.64) or nutritional status (p = 0.87). Median serum vitamin C was 1.51 (0.30–1.90) mg/L. In 16 patients receiving treatment, median serum vitamin C increased from 1.30 (0.23–1.78) to 3.22 (1.77–5.96) mg/L (p = 0.008) without increasing serum oxalate (79.92 (56.6–106.84) vs. 80.47 (56.88–102.95) μmol/L, p = 0.82). However, 62.5% failed to achieve normal vitamin C levels. Ordinal regression analysis revealed patients with non-oligoanuric CKD were less likely to achieve normal vitamin C levels (β = − 3.41, p = 0.03).

Conclusion

We describe high prevalence of vitamin C insufficiency/deficiency among pediatric CKD patients. Vitamin C levels could not be solely predicted by nutritional status or daily intake. The treatment regimen raised serum vitamin C without increasing serum oxalate; however, it was largely insufficient to normalize levels, particularly in non-oligoanuric CKD.
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Metadaten
Titel
Vitamin C deficiency and impact of vitamin C administration among pediatric patients with advanced chronic kidney disease
verfasst von
Nattaphorn Hongsawong
Notethasoung Chawprang
Kulnipa Kittisakmontri
Parach Vittayananan
Konggrapun Srisuwan
Wattana Chartapisak
Publikationsdatum
19.07.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Pediatric Nephrology / Ausgabe 2/2021
Print ISSN: 0931-041X
Elektronische ISSN: 1432-198X
DOI
https://doi.org/10.1007/s00467-020-04662-9

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