Evidence map›Paper›PMID 34099530›Full record

Observational studyOpen heart2021

Assessment of stunned and viable myocardium using manganese-enhanced MRI.

Nick B Spath, Trisha Singh, Giorgos Papanastasiou, Andrew Baker, Rob J Janiczek, Gerry P McCann, Marc R Dweck, Lucy Kershaw, David E Newby, Scott Semple

Registry-linked trialOpen access · goldAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Open heart, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03607669 (Manganese-Enhanced Magnetic Resonance Imaging), which is not on this map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 14% 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.

NCT03607669 completednot on this map

Manganese-Enhanced Magnetic Resonance Imaging: Applications in Cardiomyopathy

TypeobservationalSponsorUniversity of EdinburghRan2018 to 2020Enrolled90ConditionsIschemic Cardiomyopathy, Dilated Cardiomyopathy, Hypertrophic CardiomyopathyArmsMangafodipir trisodium
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. In-vivo assessment of myocardial calcium uptake using manganese-enhanced cardiovascular magnetic resonance in aortic stenosis.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2024
    Article
  6. Myocardial Calcium Handling in Type 2 Diabetes: A Novel Therapeutic Target.Journal of cardiovascular development and disease · 2023
    Review
  7. Article
  8. Manganese-Enhanced Magnetic Resonance Imaging of the Heart.Journal of magnetic resonance imaging : JMRI · 2023
    Review
  9. Article
  10. Article
  11. Review
  12. 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

10 authors at 3 institutions in 1 country.

Nick B SpathCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK Nick.Spath@ed.ac.uk.ORCID 0000-0001-9623-0158
Trisha SinghCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.ORCID 0000-0002-4314-9935
Giorgos PapanastasiouCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
Andrew BakerCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
Rob J JaniczekGlaxoSmithKline Research and Development, Stevenage, UK.
Gerry P McCannDepartment of Cardiovascular Sciences, University of Leicester, Leicester, UK.ORCID 0000-0002-5542-8448
Marc R DweckCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.ORCID 0000-0001-9847-5917
Lucy KershawCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
David E NewbyCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
Scott SempleCentre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
University of Edinburgh · GBGlaxoSmithKline (United Kingdom) · GBUniversity of Leicester · GB

Funding

British Heart Foundation CH/09/002/26360British Heart Foundation CH/11/2/28733British Heart Foundation FS/14/78/31020British Heart Foundation FS/17/19/32641British Heart Foundation RE/18/5/34216British Heart Foundation RG/16/10/32375British Heart Foundation RG/20/5/34796Medical Research Council G0701127Medical Research Council MR/T029153/1Wellcome Trust
6 · The paper itself

Abstract

objectiveIn a proof-of-concept study, to quantify myocardial viability in patients with acute myocardial infarction using manganese-enhanced MRI (MEMRI), a measure of intracellular calcium handling.

methodsHealthy volunteers (n=20) and patients with ST-elevation myocardial infarction (n=20) underwent late gadolinium enhancement (LGE) using gadobutrol and MEMRI using manganese dipyridoxyl diphosphate. Patients were scanned ≤7 days after reperfusion and rescanned after 3 months. Differential manganese uptake was described using a two-compartment model.

resultsAfter manganese administration, healthy control and remote non-infarcted myocardium showed a sustained 25% reduction in T1 values (mean reductions, 288±34 and 281±12 ms). Infarcted myocardium demonstrated less T1 shortening than healthy control or remote myocardium (1157±74 vs 859±36 and 835±28 ms; both p<0.0001) with intermediate T1 values (1007±31 ms) in peri-infarct regions. Compared with LGE, MEMRI was more sensitive in detecting dysfunctional myocardium (dysfunctional fraction 40.5±11.9 vs 34.9%±13.9%; p=0.02) and tracked more closely with abnormal wall motion (r

conclusionsThrough visualisation of intracellular calcium handling, MEMRI accurately differentiates infarcted, stunned and viable myocardium, and correlates with myocardial dysfunction better than LGE. MEMRI holds major promise in directly assessing myocardial viability, function and calcium handling across a range of cardiac diseases. TRIAL REGISTRATION NUMBERS: NCT03607669; EudraCT number 2016-003782-25.

Indexed as

AdultCalciumContrast MediaEdetic AcidFemaleFollow-Up StudiesHumansIntracellular SpaceMagnetic Resonance Imaging, CineMaleManganeseMiddle AgedMyocardial StunningMyocardiumPyridoxal PhosphateRetrospective StudiesCalciumContrast MediaEdetic AcidManganeseN,N'-bis(pyridoxal-5-phosphate)ethylenediamine-N,N'-diacetic acidPyridoxal Phosphateheart failuremagnetic resonance imagingmyocardial infarction

Identifiers

PMID34099530
PMCPMC8186753
OpenAlexW3166824487

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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.