Evidence map›Paper›PMID 28377413›Full record

ArticleClinical chemistry2017

Quantifying the Release of Biomarkers of Myocardial Necrosis from Cardiac Myocytes and Intact Myocardium.

Jack Marjot, Thomas E Kaier, Eva D Martin, Shiney S Reji, O'Neal Copeland, Mohammed Iqbal, Bob Goodson, Sarah Hamren, Sian E Harding, Michael S Marber

Open access · bronzeAbstract read
In one paragraph

Article in Clinical chemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
6.8field-weighted citation impact, top 2% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 102 citations in OpenAlex.

  1. Pooled it
  2. Cardiac myosin-binding protein C in ST-elevation myocardial infarction.European heart journal. Acute cardiovascular care · 2026
    Article
  3. Cardiotoxicity induced by traditional chemotherapy: mechanisms and mitigation strategies.Apoptosis : an international journal on programmed cell death · 2026
    Review
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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

10 authors at 3 institutions in 1 country.

Jack MarjotKing's College London BHF Centre, The Rayne Institute, St Thomas' Hospital, London, UK.
Thomas E KaierKing's College London BHF Centre, The Rayne Institute, St Thomas' Hospital, London, UK.
Eva D MartinKing's College London BHF Centre, The Rayne Institute, St Thomas' Hospital, London, UK.
Shiney S RejiNational Heart and Lung Institute, Imperial College, London, UK.
O'Neal CopelandNational Heart and Lung Institute, Imperial College, London, UK.
Mohammed IqbalViapath, St Thomas' Hospital, London, UK.
Bob GoodsonEMD Millipore Corporation, Hayward, CA.
Sarah HamrenEMD Millipore Corporation, Hayward, CA.
Sian E HardingNational Heart and Lung Institute, Imperial College, London, UK.
Michael S MarberKing's College London BHF Centre, The Rayne Institute, St Thomas' Hospital, London, UK.; mike.marber@kcl.ac.uk.
Imperial College London · GBKing's College London · GBSt Thomas' Hospital · GB

Funding

British Heart Foundation FS/15/13/31320British Heart Foundation TG/15/1/31518Department of HealthMedical Research Council G1000737
6 · The paper itself

Abstract

backgroundMyocardial infarction is diagnosed when biomarkers of cardiac necrosis exceed the 99th centile, although guidelines advocate even lower concentrations for early rule-out. We examined how many myocytes and how much myocardium these concentrations represent. We also examined if dietary troponin can confound the rule-out algorithm.

methodsIndividual rat cardiac myocytes, rat myocardium, ovine myocardium, or human myocardium were spiked into 400-μL aliquots of human serum. Blood was drawn from a volunteer after ingestion of ovine myocardium. High-sensitivity assays were used to measure cardiac troponin T (cTnT; Roche, Elecsys), cTnI (Abbott, Architect), and cardiac myosin-binding protein C (cMyC; EMD Millipore, Erenna

resultsThe cMyC assay could only detect the human protein. For each rat cardiac myocyte added to 400 μL of human serum, cTnT and cTnI increased by 19.0 ng/L (95% CI, 16.8-21.2) and 18.9 ng/L (95% CI, 14.7-23.1), respectively. Under identical conditions cTnT, cTnI, and cMyC increased by 3.9 ng/L (95% CI, 3.6-4.3), 4.3 ng/L (95% CI, 3.8-4.7), and 41.0 ng/L (95% CI, 38.0-44.0) per μg of human myocardium. There was no detectable change in cTnI or cTnT concentration after ingestion of sufficient ovine myocardium to increase cTnT and cTnI to approximately 1 × 10

conclusionsBased on pragmatic assumptions regarding cTn and cMyC release efficiency, circulating species, and volume of distribution, 99th centile concentrations may be exceeded by necrosis of 40 mg of myocardium. This volume is much too small to detect by noninvasive imaging.

Indexed as

AnimalsBiomarkersEatingHumansMyocardial InfarctionMyocardiumMyocytes, CardiacRatsSheepTroponin IBiomarkersTroponin I

Identifiers

PMID28377413
PMCPMC6114147
OpenAlexW2604605177

What OpenQuestion holds

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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.