Evidence map›Paper›PMID 26053590›Full record

ArticleThe Prostate2015

Dietary, supplement, and adipose tissue tocopherol levels in relation to prostate cancer aggressiveness among African and European Americans: The North Carolina-Louisiana Prostate Cancer Project (PCaP).

Samuel O Antwi, Susan E Steck, L Joseph Su, James R Hébert, Hongmei Zhang, Elizabeth T H Fontham, Gary J Smith, Jeannette T Bensen, James L Mohler, Lenore Arab

Abstract read
In one paragraph

Article in The Prostate, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 30% 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

6 citing papers in PubMed, 16 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. Review
  5. Review
  6. Tocopherols in cancer: An update.Molecular nutrition & food research · 2016
    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

10 authors at 8 institutions in 1 country.

Samuel O AntwiDivision of Epidemiology, Health Sciences Research, Mayo Clinic, Rochester, Minnesota.
Susan E SteckDepartment of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina.
L Joseph SuNational Cancer Institute, National Institutes of Health, Rockville, Maryland.
James R HébertDepartment of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina.
Hongmei ZhangDepartment of Epidemiology, Biostatistics, and Environmental Health, University of Memphis, Memphis, Tennessee.
Elizabeth T H FonthamSchool of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana.
Gary J SmithDepartment of Urology, Roswell Park Cancer Institute, Buffalo, New York.
Jeannette T BensenDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
James L MohlerDepartment of Urology, Roswell Park Cancer Institute, Buffalo, New York.
Lenore ArabDavid Geffen School of Medicine at UCLA, Los Angeles, California.
Roswell Park Comprehensive Cancer Center · USUniversity of South Carolina · USLouisiana State University Health Sciences Center New Orleans · USMayo Clinic · USNational Institutes of Health · USUniversity of California, Los Angeles · USUniversity of Memphis · USUniversity of North Carolina at Chapel Hill · US

Funding

Mayo Cancer Genetic Epidemiology Training ProgramR25CA092049 · NCI · MAYO CLINIC ROCHESTER · PI PETERSEN, GLORIA M., VACHON, CELINE M · 2001 to 2018
$5.3M
NCI NIH HHS R25 CA092049
6 · The paper itself

Abstract

backgroundControversies remain over the safety and efficacy of vitamin E (i.e., α-tocopherol) supplementation use for the prevention of prostate cancer (CaP); however, associations of different tocopherol forms and CaP aggressiveness have yet to be examined.

methodsThis study examined whether food intake of tocopherols, vitamin E supplement use, and adipose tissue biomarkers of tocopherol were associated with CaP aggressiveness among African-American (AA, n = 1,023) and European-American (EA, n = 1,079) men diagnosed with incident CaP. Dietary tocopherols were estimated from a food frequency questionnaire, supplement use from questionnaire/inventory, and biomarkers from abdominal adipose samples measured using high-performance liquid chromatography. Odds ratios (ORs) and 95% confidence intervals (95%CIs) were estimated from logistic regression comparing high-aggressive CaP to low/intermediate aggressive CaP, adjusting for covariates.

resultsDietary intakes of α-and δ-tocopherol were related inversely to CaP aggressiveness among EAs [OR (95%CI), highest versus lowest quartile: α-tocopherol, 0.34 (0.17-0.69), P(trend)  = 0.006; δ-tocopherol, 0.45 (0.21-0.95) P(trend)  = 0.007]. Inverse associations between dietary and supplemental α-tocopherol and CaP aggressiveness were observed among AAs, though these did not reach statistical significance [OR (95%CI), highest versus lowest quartile: dietary α-tocopherol, 0.58 (0.28-1.19), P(trend)  = 0.20; supplemental α-tocopherol, 0.64 (0.31-1.21) P(trend)  = 0.15]. No significant association was observed between adipose tocopherol levels and CaP aggressiveness [OR (95%CI), highest versus lowest quartiles of α-tocopherol for EAs 1.43 (0.66-3.11) and AAs 0.66 (0.27-1.62)].

conclusionsThe inverse associations observed between dietary sources of tocopherols and CaP aggressiveness suggests a beneficial role of food sources of these tocopherols in CaP aggressiveness.

Indexed as

Dietary SupplementsAdipose TissueAgedBlack or African AmericanHumansLouisianaMaleMiddle AgedNeoplasm InvasivenessNorth CarolinaProstatic NeoplasmsTocopherolsWhite PeopleTocopherolsadipose tissuedietnutritional biomarkersprostate cancersupplementtocopherolsvitamin E

Identifiers

PMID26053590
PMCPMC5072779
OpenAlexW1500930218

What OpenQuestion holds

Textmetadata
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.