Evidence map›Paper›PMID 32683655›Full record

ArticlePediatric nephrology (Berlin, Germany)2021

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

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

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In one paragraph

Article in Pediatric nephrology (Berlin, Germany), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 3 pooled it
1.2field-weighted citation impact, top 23% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 3 syntheses or guidelines pooled it, 19 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Nattaphorn HongsawongDepartment of Pediatrics, Division of Pediatric Nephrology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
Notethasoung ChawprangDepartment of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Kulnipa KittisakmontriDepartment of Pediatrics, Division of Pediatric Nutrition, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Parach VittayanananDepartment of Pediatrics, Division of Pediatric Nephrology, Phramongkutklao College of Medicine, Bangkok, Thailand.
Konggrapun SrisuwanDepartment of Pediatrics, Division of Pediatric Nephrology, Phramongkutklao College of Medicine, Bangkok, Thailand.
Wattana ChartapisakDepartment of Pediatrics, Division of Pediatric Nephrology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand. Wattana.c@cmu.ac.th.ORCID http://orcid.org/0000-0002-1549-2568
Chiang Mai University · THPhramongkutklao Hospital · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin 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.

methodsA 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.

resultsNineteen 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).

conclusionWe 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. Graphical abstract .

Indexed as

Ascorbic Acid DeficiencyRenal Insufficiency, ChronicVitamin D DeficiencyAdolescentAscorbic AcidChildHumansOxalatesPrevalenceProspective StudiesRenal DialysisVitamin DVitaminsAscorbic AcidOxalatesVitamin DVitaminsChildrenChronic kidney diseaseHyperoxaluriaOxalosisVitamin C deficiency

Identifiers

PMID32683655
OpenAlexW3043060536

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.