Evidence map›Paper›PMID 23520238›Full record

ArticleStroke2013

Metabolite profiling identifies a branched chain amino acid signature in acute cardioembolic stroke.

W Taylor Kimberly, Yu Wang, Ly Pham, Karen L Furie, Robert E Gerszten

Open access · bronzeAbstract read
In one paragraph

Article in Stroke, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 5 pooled it
2.5field-weighted citation impact, top 10% 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

66 citing papers in PubMed, 5 syntheses or guidelines pooled it, 128 citations in OpenAlex.

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  12. Corroborated evidence on change of metabolome after ischemic stroke due to large vessel occlusion.Metabolomics : Official journal of the Metabolomic Society · 2025
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6 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

W Taylor KimberlyCenter for Human Genetic Research and Division of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. wtkimberly@partners.org
Yu Wang
Ly Pham
Karen L Furie
Robert E Gerszten
Brown University · US

Funding

Specialized Programs of Translational Research in Acute Stroke at the PartnersP50NS051343 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI GREENBERG, STEVEN M · 2006 to 2013
$17.5M
Metabolomic Biomarkers of Early Myocardial InjuryR01HL098280 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI GERSZTEN, ROBERT E, SABATINE, MARC S · 2010 to 2014
$3.7M
Discovery & Application of Proteomics-Based Biomarkers of Early Myocardial InjuryR01HL096738 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI CARR, STEVEN A, GERSZTEN, ROBERT E · 2009 to 2012
$2.9M
Metabolomic analysis of acute stress hyperglycemia in ischemic strokeK23NS076597 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI KIMBERLY, WILLIAM TAYLOR · 2011 to 2015
$959k
NHLBI NIH HHS R01 HL096738NHLBI NIH HHS R01HL096738NHLBI NIH HHS R01 HL098280NHLBI NIH HHS R01HL098280NINDS NIH HHS 5P50NS051343-07NINDS NIH HHS K23 NS076597NINDS NIH HHS K23NS076597NINDS NIH HHS P50 NS051343
6 · The paper itself

Abstract

background and purposeThere is limited information about changes in metabolism during acute ischemic stroke. The identification of changes in circulating plasma metabolites during cerebral infarction may provide insight into disease pathogenesis and identify novel biomarkers.

methodsWe performed filament occlusion of the middle cerebral artery of Wistar rats and collected plasma and cerebrospinal fluid 2 hours after the onset of ischemia. Plasma samples from control and patients with acute stroke were also analyzed. All samples were examined using liquid chromatography followed by tandem mass spectrometry. Positively charged metabolites, including amino acids, nucleotides, and neurotransmitters, were quantified using electrospray ionization followed by scheduled multiple reaction monitoring.

resultsThe concentrations of several metabolites were altered in the setting of cerebral ischemia. We detected a reduction in the branched chain amino acids (valine, leucine, isoleucine) in rat plasma, rat cerebrospinal fluid, and human plasma compared with respective controls (16%, 23%, and 17%, respectively; P<0.01 for each). In patients, lower branched chain amino acids levels also correlated with poor neurological outcome (modified Rankin Scale, 0-2 versus 3-6; P=0.002).

conclusionsBranched chain amino acids are reduced in ischemic stroke, and the degree of reduction correlates with worse neurological outcome. Whether branched chain amino acids are in a causal pathway or are an epiphenomenon of ischemic stroke remains to be determined.

Indexed as

AdultAmino Acids, Branched-ChainAnimalsBiomarkersBrain IschemiaFemaleHumansMaleMass SpectrometryRatsRats, WistarStrokeAmino Acids, Branched-ChainBiomarkers

Identifiers

PMID23520238
PMCPMC3816089
OpenAlexW2107425720

What OpenQuestion holds

Textmetadata
LicenceTDM
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.