Evidence map›Paper›PMID 25715694›Full record

ArticleClinical nutrition (Edinburgh, Scotland)2016

Serum tocopherol levels and vitamin E intake are associated with lung function in the normative aging study.

Corrine Hanson, Elizabeth Lyden, Jeremy Furtado, Hannia Campos, David Sparrow, Pantel Vokonas, Augusto A Litonjua

Abstract read
In one paragraph

Article in Clinical nutrition (Edinburgh, Scotland), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 3 pooled it
1.2field-weighted citation impact, top 24% 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

29 citing papers in PubMed, 3 syntheses or guidelines pooled it, 47 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

7 authors at 5 institutions in 1 country.

Corrine HansonUniversity of Nebraska Medical Center, School of Allied Health Professions, Medical Nutrition Education, 984045 Nebraska Medical Center, Omaha, NE 68198-4045, USA. Electronic address: ckhanson@unmc.edu.
Elizabeth LydenUniversity of Nebraska Medical Center, College of Public Health, 984375 Nebraska Medical Center, Omaha, NE 68198-4375, USA.
Jeremy FurtadoDepartment of Nutrition, Harvard School of Public Health, 655 Huntington Avenue, Boston, MA 02215, USA.
Hannia CamposDepartment of Nutrition, Harvard School of Public Health, 655 Huntington Avenue, Boston, MA 02215, USA.
David SparrowVeterans Affairs Boston Healthcare System and Department of Medicine, Boston University School of Medicine, Boston, MA 02130, USA.
Pantel VokonasVeterans Affairs Boston Healthcare System and Department of Medicine, Boston University School of Medicine, Boston, MA 02130, USA.
Augusto A LitonjuaChanning Laboratory and Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, USA.
Harvard University · USBoston University · USNebraska Medical Center · USUniversity of Nebraska Medical Center · USVA Boston Healthcare System · US

Funding

Longitudinal Lung Function Changes--Aging/Genetics/RiskR01AG027014 · NIA · BRIGHAM AND WOMEN'S HOSPITAL · PI LITONJUA, AUGUSTO A · 2005 to 2008
$1.5M
NIA NIH HHS AG027014NIA NIH HHS R01 AG027014
6 · The paper itself

Abstract

BACKGROUND &

aimsThe results of studies assessing relationships between vitamin E intake and status and lung function are conflicting. This study aimed to evaluate the effect of vitamin E intake and serum levels of tocopherol isoforms on lung function in a cross-sectional sample of 580 men from the Normative Aging Study, a longitudinal aging study.

methodsRegression models were used to look at associations of serum tocopherol isoform levels and vitamin E intake with lung function parameters after adjustment for confounders. Vitamin E intake was measured using a food frequency questionnaire and serum levels of γ, α, and δ-tocopherol levels were measured using high-performance liquid chromatography.

resultsAfter adjustment for potential confounders, serum γ-tocopherol had a significant inverse association with forced vital capacity (β = -0.10, p = 0.05). Alpha and δ-tocopherol were not associated with any lung function parameter. After classifying COPD status according to Global Initiative for Obstructive Lung Disease (GOLD) stage criteria, serum levels of δ-tocopherol were lower in participants with more severe COPD (p = 0.01). Serum levels of δ-tocopherol were also lower in participants with greater levels of smoking (p = 0.02). Both vitamin E intake (β = 0.03, p = 0.02; β = 0.03, p = 0.01) and use of vitamin E supplements (β = 0.05, p = 0.03; β = 0.06. p = 0.02) were positively associated with FEV1 and FVC, after adjusting for confounders. Subjects who took vitamin E supplements had significantly higher α-tocopherol levels (p < 0.0001) and lower γ-tocopherol levels (p < 0.0001) than non-users.

conclusionIn this study, there is a positive association between dietary vitamin E intake and lung function, and evidence of an inverse relationship between serum levels of γ-tocopherol and lung function.

Indexed as

AgingAdultAgedAged, 80 and overalpha-TocopherolBody Mass IndexCross-Sectional Studiesgamma-TocopherolHumansLongitudinal StudiesLungMaleMiddle AgedMultivariate AnalysisRegression AnalysisRisk Factorsalpha-Tocopheroldelta-tocopherolgamma-TocopherolTocopherolsVitamin ECOPDDietInflammationLung functionTocopherolsVitamin E

Identifiers

PMID25715694
PMCPMC4529394
OpenAlexW1985760681

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

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.