Evidence map›Paper›PMID 24674272›Full record

ArticleJournal of vascular surgery2015

Iron and noncontrast magnetic resonance T2* as a marker of intraplaque iron in human atherosclerosis.

Marshall W Winner, Travis Sharkey-Toppen, Xiaolan Zhang, Michael L Pennell, Orlando P Simonetti, Jay L Zweier, Patrick S Vaccaro, Subha V Raman

Open access · bronzeAbstract read
In one paragraph

Article in Journal of vascular surgery, 2015. 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
0.8field-weighted citation impact, top 28% 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, 10 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

8 authors at 2 institutions in 1 country.

Marshall W WinnerThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio.
Travis Sharkey-ToppenThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio.
Xiaolan ZhangThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio.
Michael L PennellThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio.
Orlando P SimonettiThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio.
Jay L ZweierThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio.
Patrick S VaccaroThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio.
Subha V RamanThe Ohio State University, Davis Heart and Lung Research Institute, Columbus, Ohio. Electronic address: raman.1@osu.edu.
Lung Institute · USThe Ohio State University · US

Funding

Iron and AtherosclerosisR01HL095563 · NHLBI · OHIO STATE UNIVERSITY · PI RAMAN, SUBHA V · 2009 to 2013
$2.6M
Integration of High Field MRI and EPRI For Functional ImagingR01EB016096 · NIBIB · OHIO STATE UNIVERSITY · PI ZWEIER, JAY LOUIS · 2013 to 2016
$2.3M
NHLBI NIH HHS HL095563NHLBI NIH HHS R01 HL095563NIBIB NIH HHS R01 EB016096
6 · The paper itself

Abstract

objectiveIron has been implicated in atherogenesis and plaque destabilization, whereas less is known about iron-related proteins in this disease. We compared ex vivo quantities with in vivo vessel wall T2*, which is a noncontrast magnetic resonance relaxation time that quantitatively shortens with increased tissue iron content. We also tested the hypothesis that patients with carotid atherosclerosis have abnormal T2* times vs controls that would help support a role for iron in human atherosclerosis.

methodsForty-six patients undergoing carotid endarterectomy and 14 subjects without carotid disease were prospectively enrolled to undergo carotid magnetic resonance imaging. Ex vivo measurements were performed on explanted plaque and 17 mammary artery samples.

resultsPlaques vs normal arteries had higher levels of ferritin (median, 7.3 [interquartile range (IQR), 4-13.8] vs 1.0 [IQR, 0.6-1.3] ng/mg; P < .001) and oxidized low-density lipoprotein (median, 0.17 [IQR, 0.12-0.30] vs 0.01 [IQR, 0.003-0.03] ng/mg; P < .001) as well as hepcidin (median, 8.7 [IQR, 4.6-12.4] vs 2.6 [IQR, 1.3-7.0] ng/mL; P = .03); serum hepcidin levels did not distinguish atherosclerosis patients from controls (median, 40.6 [IQR, 18.8-88.6] vs 33.9 [IQR, 17.6-55.2]; P = .42). Shorter in vivo T2* paralleled larger plaque volume (ρ = -.44; P = .01), and diseased arteries had shorter T2* values compared with controls (median, 17.7 ± 4.3 vs 23.0 ± 2.4 ms; P < .001).

conclusionsDiseased arteries have greater levels of iron-related proteins ex vivo and shorter T2* times in vivo. Further studies should help define the role of T2* as a biomarker of iron and atherosclerosis.

Indexed as

Magnetic Resonance AngiographyPlaque, AtheroscleroticAgedBiomarkersCarotid ArteriesCarotid Artery DiseasesCase-Control StudiesEndarterectomy, CarotidFemaleFerritinsHepcidinsHumansIronLipoproteins, LDLMaleMiddle AgedBiomarkersFerritinsHepcidinsIronLipoproteins, LDLoxidized low density lipoprotein

Identifiers

PMID24674272
PMCPMC4175307
OpenAlexW2030060465

What OpenQuestion holds

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Registered trials

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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.