Evidence map›Paper›PMID 23335039›Full record

Trial reportClinical journal of the American Society of Nephrology : CJASN2013

Low plasma α-tocopherol concentrations and adverse clinical outcomes in diabetic hemodialysis patients.

Katharina M Espe, Jens Raila, Andrea Henze, Katja Blouin, Andreas Schneider, Daniel Schmiedeke, Vera Krane, Stefan Pilz, Florian J Schweigert, Berthold Hocher and 3 more

Open access · bronzeAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Clinical journal of the American Society of Nephrology : CJASN, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.9field-weighted citation impact, top 29% 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

7 citing papers in PubMed, 17 citations in OpenAlex.

  1. Provision of antioxidant therapy in hemodialysis (PATH): a randomized clinical trial.Journal of the American Society of Nephrology : JASN · 2014
    Trial
  2. Trial
  3. Review
  4. Review
  5. Article
  6. Review
  7. Vitamins and type 2 diabetes mellitus.Endocrine, metabolic & immune disorders drug targets · 2015
    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

13 authors at 3 institutions in 3 countries.

Katharina M EspeDepartment of Physiology and Pathophysiology of Nutrition, Institute of Nutritional Science, University of Potsdam, Potsdam, Germany.
Jens Raila
Andrea Henze
Katja Blouin
Andreas Schneider
Daniel Schmiedeke
Vera Krane
Stefan Pilz
Florian J Schweigert
Berthold Hocher
Christoph Wanner
Christiane Drechsler
German Diabetes and Dialysis Study Investigators
Universitätsklinikum Würzburg · DEUniversity of Potsdam · DEMedical University of Graz · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesTrials with the antioxidant vitamin E have failed to show benefit in the general population. Considering the different causes of death in ESRD, this study investigated the association between plasma concentrations of α-tocopherol and specific clinical outcomes in diabetic hemodialysis patients. DESIGN, SETTINGS, PARTICIPANTS, & MEASUREMENTS: In 1046 diabetic hemodialysis patients (participants of the German Diabetes and Dialysis Study), α-tocopherol was measured in plasma by reversed-phase HPLC. By Cox regression analyses, hazard ratios were determined for prespecified end points according to baseline plasma α-tocopherol levels: sudden death (n=134), myocardial infarction (n=172), stroke (n=89), combined cardiovascular events (n=398), fatal infection (n=107), and all-cause mortality (n=508).

resultsPatients had a mean age of 66±8 years, and mean plasma α-tocopherol level was 22.8±9.6 µmol/L. Levels of α-tocopherol were highly correlated to triglycerides (r=0.63, P<0.001). Patients in the lowest α-tocopherol quartile had (in unadjusted analyses) a 79% higher risk of stroke and a 31% higher risk of all-cause mortality compared with patients in the highest quartile. The associations were attenuated after adjustment for confounders (hazard ratiostroke=1.56, 95% confidence interval=0.75-3.25; hazard ratiomortality=1.22, 95% confidence interval=0.89-1.69, respectively). There was no association between α-tocopherol and myocardial infarction, sudden death, or infectious death.

conclusionsPlasma α-tocopherol concentrations were not independently associated with cardiovascular outcomes, infectious deaths, or all-cause mortality in diabetic hemodialysis patients. The lack of association can partly be explained by a confounding influence of malnutrition, which should be considered in the planning of trials to reduce cardiovascular risk in dialysis patients.

Indexed as

Down-RegulationAgedalpha-TocopherolBiomarkersCause of DeathChromatography, High Pressure LiquidChromatography, Reverse-PhaseCommunicable DiseasesConfounding Factors, EpidemiologicDiabetic NephropathiesFemaleGermanyHumansKaplan-Meier EstimateMaleMalnutritionalpha-TocopherolBiomarkers

Identifiers

PMID23335039
PMCPMC3586965
OpenAlexW2122741666

What OpenQuestion holds

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Registered trials

None linked

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.