Evidence map›Paper›PMID 38811416›Full record

ArticleEuropean journal of nutrition2024

Vitamin C deficiency after kidney transplantation: a cohort and cross-sectional study of the TransplantLines biobank.

Manuela Yepes-Calderón, Yvonne van der Veen, Fernando Martín Del Campo S, Daan Kremer, Camilo G Sotomayor, Tim J Knobbe, Michel J Vos, Eva Corpeleijn, Martin H de Borst, Stephan J L Bakker and 1 more

Abstract read
In one paragraph

Article in European journal of nutrition, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Review
  2. Article
  3. Dietary Guidelines Post Kidney Transplant: Is This the Missing Link in Recovery and Graft Survival?Transplant international : official journal of the European Society for Organ Transplantation · 2025
    Review
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

11 authors.

Manuela Yepes-CalderónDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands. m.yepes.calderon@umcg.nl.ORCID http://orcid.org/0000-0002-4693-5974
Yvonne van der VeenDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands.
Fernando Martín Del Campo SDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands.
Daan KremerDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands.
Camilo G SotomayorDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands.
Tim J KnobbeDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands.
Michel J VosDepartment of Laboratory Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Eva CorpeleijnDepartment of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Martin H de BorstDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands.
Stephan J L BakkerDivision of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, 9700 RB, The Netherlands.
TransplantLines Investigators

Funding

Astellas Pharma, Netherlands Cohort studyAstellas Pharma, Netherlands TransplantLines BiobankChiesi Farmaceutici PA-SP/PRJ-2020-9136Nederlandse Organisatie voor Wetenschappelijk Onderzoek 14939Topconsortium voor Kennis en Innovatie PPP-2019-032Topconsortium voor Kennis en Innovatie PPP-2022-015
6 · The paper itself

Abstract

purposeVitamin C deficiency is associated with excess mortality in kidney transplant recipients (KTR). We aim to evaluate plasma vitamin C status at different post-transplantation moments and assess the main characteristics associated with vitamin C deficiency in KTR.

methodsPlasma vitamin C was assessed in 598 KTR at 3-, 6-, 12-, 24-, and 60-months post-transplantation, 374 late KTR with a functioning graft ≥ 1 year, and 395 potential donors. Vitamin C deficiency was defined as plasma vitamin C ≤ 28 µmol/L. Diet was assessed by a 177-item food frequency questionnaire. Data on vitamin C-containing supplements use were extracted from patient records and verified with the patients.

resultsVitamin C deficiency ranged from 46% (6-months post-transplantation) to 30% (≥ 1 year post-transplantation). At all time points, KTR had lower plasma vitamin C than potential donors (30-41 µmol/L vs 58 µmol/L). In cross-sectional analyses of the 953 KTR at their first visit ≥ 12 months after transplantation (55 ± 14 years, 62% male, eGFR 55 ± 19 mL/min/1.73 m

conclusionVitamin C deficiency is frequent among KTR regardless of the time after transplantation, especially among those with diabetes and active smokers. The prevalence of vitamin C deficiency was lower among KTR with higher vitamin C intake, both dietary and supplemented. Further research is warranted to assess whether correcting this modifiable risk factor could improve survival in KTR.

Indexed as

Ascorbic AcidAscorbic Acid DeficiencyKidney TransplantationAdultAgedBiological Specimen BanksCohort StudiesCross-Sectional StudiesDietary SupplementsFemaleHumansMaleMiddle AgedPrevalenceRisk FactorsAscorbic AcidAntioxidantAscorbic acidDeficiency

Identifiers

PMID38811416
PMCPMC11377669

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Registered trials

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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.