Evidence map›Paper›PMID 34533774›Full record

Trial reportAging clinical and experimental research2022

Iron deficiency and biomarkers of inflammation: a 3-year prospective analysis of the DO-HEALTH trial.

Maud Wieczorek, Franziska Schwarz, Angélique Sadlon, Lauren A Abderhalden, Caroline de Godoi Rezende Costa Molino, Donat R Spahn, Dominik J Schaer, E John Orav, Andreas Egli, Heike A Bischoff-Ferrari and 1 more

Open access · hybridAbstract readObservational StudyRandomized Controlled Trial
In one paragraph

Trial report in Aging clinical and experimental research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Polyphenol-Rich Ginger (Molecules (Basel, Switzerland) · 2022
    Review
  18. Observational
  19. Article
  20. 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 at 2 institutions in 3 countries.

Maud Wieczorek *Department of Aging Medicine and Aging Research, University Hospital Zurich and University of Zurich, Raemistrasse 101, 8091, Zurich, Switzerland.
Franziska Schwarz *Department of Aging Medicine and Aging Research, University Hospital Zurich and University of Zurich, Raemistrasse 101, 8091, Zurich, Switzerland.
Angélique SadlonDepartment of Aging Medicine and Aging Research, University Hospital Zurich and University of Zurich, Raemistrasse 101, 8091, Zurich, Switzerland.
Lauren A AbderhaldenDepartment of Aging Medicine and Aging Research, University Hospital Zurich and University of Zurich, Raemistrasse 101, 8091, Zurich, Switzerland.
Caroline de Godoi Rezende Costa MolinoDepartment of Aging Medicine and Aging Research, University Hospital Zurich and University of Zurich, Raemistrasse 101, 8091, Zurich, Switzerland.
Donat R SpahnInstitute of Anesthesiology, University Hospital Zurich and University of Zurich, Zurich, Switzerland.
Dominik J SchaerDivision of Internal Medicine, University Hospital Zurich and University of Zurich, Zurich, Switzerland.
E John OravDepartment of Biostatistics, Harvard School of Public Health, Boston, USA.
Andreas EgliDepartment of Aging Medicine and Aging Research, University Hospital Zurich and University of Zurich, Raemistrasse 101, 8091, Zurich, Switzerland.
Heike A Bischoff-FerrariDepartment of Aging Medicine and Aging Research, University Hospital Zurich and University of Zurich, Raemistrasse 101, 8091, Zurich, Switzerland. Heike.Bischoff@usz.ch.ORCID http://orcid.org/0000-0002-4554-658X
DO-HEALTH Research group
University of Zurich · CHHarvard University · US

Funding

European Commission Grant Agreement n°278588
6 · The paper itself

Abstract

backgroundThe longitudinal association between iron deficiency and inflammatory biomarkers levels has not been fully explored among relatively healthy older adults.

aimsTo assess whether iron deficiency at baseline and at any yearly follow-up time point, with or without anemia, was associated with changes from baseline in high-sensitivity C-reactive protein (hs-CRP) and interleukin-6 (IL-6) levels over 3 years.

methodsThis is a post-hoc observational analysis of DO-HEALTH, a double-blind, randomized controlled trial including 2157 European community-dwelling adults age 70+. The outcomes were changes from baseline in hs-CRP and IL-6 levels, measured at 12, 24, and 36 months of follow-up. Iron deficiency was defined by soluble transferrin receptor levels > 28.1 nmol/L and baseline anemia by hemoglobin levels < 130 g/L for men and < 120 g/L for women.

resultsIn total, 2141 participants were included in the analyses (mean age: 74.9 years, 61.5% of women, 26.8% with iron deficiency). Baseline iron deficiency was associated with greater increase in IL-6 levels (mean difference in change: 0.52 ng/L, 95%CI 0.03-1.00, P = .04) over 3 years. Iron deficiency at any yearly time point was associated with higher increases in hs-CRP (mean difference in change: 1.62 mg/L, 95%CI 0.98-2.26, P < .001) and IL-6 levels (mean difference in change: 1.33 ng/L, 95%CI 0.87-1.79, P < .001) over 3 years. No significant interaction between iron deficiency and anemia was found, suggesting that the results are independent of the anemic status.

conclusionsThese findings suggest that iron deficiency may play a role in low-grade chronic inflammation among relatively healthy older adults.

Indexed as

Anemia, Iron-DeficiencyIron DeficienciesAgedBiomarkersC-Reactive ProteinFemaleHemoglobinsHumansInflammationMaleBiomarkersC-Reactive ProteinHemoglobinsAnemiaDO-HEALTHHs-CRPIL-6InflammagingIron deficiency

Identifiers

PMID34533774
PMCPMC8894209
OpenAlexW3201290448

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.