Evidence map›Paper›PMID 20401662›Full record

Trial reportEuropean journal of nutrition2010

Effect of supplementation with B vitamins and antioxidants on levels of asymmetric dimethylarginine (ADMA) and C-reactive protein (CRP): a double-blind, randomised, factorial design, placebo-controlled trial.

Mark G O'Doherty, Sarah E C M Gilchrist, Ian S Young, Michelle C McKinley, John W G Yarnell, K Fred Gey, Alun Evans, Paula M L Skidmore, Jayne V Woodside

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of nutrition, 2010. 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
0.7field-weighted citation impact, top 33% 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

3 citing papers in PubMed, 13 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
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

9 authors at 4 institutions in 5 countries.

Mark G O'DohertySchool of Medicine, Dentistry and Biomedical Sciences, Queen's University, Belfast, UK. m.odoherty@qub.ac.uk
Sarah E C M Gilchrist
Ian S Young
Michelle C McKinley
John W G Yarnell
K Fred Gey
Alun Evans
Paula M L Skidmore
Jayne V Woodside
Queen's University Belfast · GBQueen's University · CAUniversity of Bern · CHUniversity of Otago · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeCardiovascular risk factors such as elevated levels of asymmetric dimethylarginine (ADMA)/C-reactive protein (CRP) and homocysteine are potentially related to essential micronutrients such as certain B vitamins and antioxidant vitamins. The aim of the present study was to investigate whether supplementation with moderate doses of B vitamins and/or antioxidants could alter either ADMA and/or CRP concentrations in middle-aged, apparently healthy men with mildly elevated homocysteine levels.

methodsA randomised, double-blind, factorial design, intervention study was carried out on 132 men with mildly elevated homocysteine levels, allocated to four groups (a) B vitamins alone--1 mg folic acid, 7.2 mg pyridoxine, 0.02 mg cyanocobalamin daily, (b) antioxidants alone--150 mg ascorbic acid, 67 mg vitamin E, 9 mg β-carotene daily, (c) B vitamins with antioxidant vitamins, or (d) placebo. A total of 101 men completed the study to 8 weeks.

resultsWhen the percentage of baseline ADMA and CRP was examined at 8 weeks, no statistically significant differences were observed between the four groups (p = 0.21 and p = 0.90, respectively). Similar non-significant results were observed when analysis was stratified based on baseline CRP levels (<1.0 mg/L, p = 0.10; ≥1.0 mg/L, p = 0.64) and smoking status (all p ≥ 0.05).

conclusionsSupplementation with moderate doses of B vitamins and/or antioxidants did not alter either ADMA or CRP concentrations in these middle-aged, apparently healthy men with mildly elevated homocysteine levels.

Indexed as

Dietary SupplementsAdultAntioxidantsArginineAscorbic Acidbeta CaroteneBiomarkersBlood PressureCardiovascular DiseasesCholesterolC-Reactive ProteinDouble-Blind MethodHomocysteineHumansMaleMiddle AgedAntioxidantsArginineAscorbic Acidbeta CaroteneBiomarkersCholesterolC-Reactive ProteinHomocysteineN,N-dimethylarginineProtective AgentsTriglyceridesVitamin B ComplexVitamin E

Identifiers

PMID20401662
OpenAlexW2018943064

What OpenQuestion holds

Textmetadata
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.