Evidence map›Paper›PMID 31828981›Full record

ArticleAnnals of clinical and translational neurology2020

High-resolution metabolomic profiling of Alzheimer's disease in plasma.

Megan M Niedzwiecki, Douglas I Walker, Jennifer Christina Howell, Kelly D Watts, Dean P Jones, Gary W Miller, William T Hu

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 7% 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

42 citing papers in PubMed, 1 synthesis or guideline pooled it, 62 citations in OpenAlex.

  1. Pooled it
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  15. Charting the Next Road Map for CSF Biomarkers in Alzheimer's Disease and Related Dementias.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  16. Article
  17. Early Diagnosis of Alzheimer's Disease with Blood Test; Tempting but Challenging.International journal of molecular and cellular medicine · 2023
    Review
  18. Article
  19. Article
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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

7 authors at 1 institution in 1 country.

Megan M NiedzwieckiDepartment of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia.ORCID 0000-0001-6647-141X
Douglas I WalkerDepartment of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia.
Jennifer Christina HowellDepartment of Neurology, Emory University, Atlanta, Georgia.
Kelly D WattsDepartment of Neurology, Emory University, Atlanta, Georgia.
Dean P JonesClinical Biomarkers Laboratory, Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia.
Gary W MillerDepartment of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia.ORCID 0000-0001-8984-1284
William T HuDepartment of Neurology, Emory University, Atlanta, Georgia.
Emory University · US

Funding

MSHS Translational Science HubUL1TR001433 · NCATS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI WRIGHT, ROSALIND J · 2015 to 2019
$26.6M
The Emory Alzheimer's Disease CenterP50AG025688 · NIA · EMORY UNIVERSITY · PI WALKER, LARY C · 2005 to 2019
$25.7M
Pilot Project ProgramP30ES019776 · NIEHS · EMORY UNIVERSITY · PI Carmen Joseph Marsit · 2013 to 2026
$22.6M
Graduate and Postdoctoral Training in ToxicologyT32ES012870 · NIEHS · EMORY UNIVERSITY · PI Carmen Joseph Marsit · 2004 to 2026
$9.1M
Early CSF detection of FTLDK23AG042856 · NIA · EMORY UNIVERSITY · PI HU, WILLIAM TZU-LUNG · 2013 to 2017
$782k
African American Alzheimer's Progression Markers - CSF and Neuro-ImagingR21AG043885 · NIA · EMORY UNIVERSITY · PI HU, WILLIAM TZU-LUNG · 2013 to 2014
$429k
NCATS NIH HHS UL1 TR001433NIA NIH HHS K23 AG042856NIA NIH HHS P50 AG025688NIA NIH HHS R21 AG043885NIEHS NIH HHS P30 ES019776NIEHS NIH HHS T32 ES012870
6 · The paper itself

Abstract

backgroundAlzheimer's disease (AD) is a complex neurological disorder with contributions from genetic and environmental factors. High-resolution metabolomics (HRM) has the potential to identify novel endogenous and environmental factors involved in AD. Previous metabolomics studies have identified circulating metabolites linked to AD, but lack of replication and inconsistent diagnostic algorithms have hindered the generalizability of these findings. Here we applied HRM to identify plasma metabolic and environmental factors associated with AD in two study samples, with cerebrospinal fluid (CSF) biomarkers of AD incorporated to achieve high diagnostic accuracy.

methodsLiquid chromatography-mass spectrometry (LC-MS)-based HRM was used to identify plasma and CSF metabolites associated with AD diagnosis and CSF AD biomarkers in two studies of prevalent AD (Study 1: 43 AD cases, 45 mild cognitive impairment [MCI] cases, 41 controls; Study 2: 50 AD cases, 18 controls). AD-associated metabolites were identified using a metabolome-wide association study (MWAS) framework.

resultsAn MWAS meta-analysis identified three non-medication AD-associated metabolites in plasma, including elevated levels of glutamine and an unknown halogenated compound and lower levels of piperine, a dietary alkaloid. The non-medication metabolites were correlated with CSF AD biomarkers, and glutamine and the unknown halogenated compound were also detected in CSF. Furthermore, in Study 1, the unknown compound and piperine were altered in MCI patients in the same direction as AD dementia.

conclusionsIn plasma, AD was reproducibly associated with elevated levels of glutamine and a halogen-containing compound and reduced levels of piperine. These findings provide further evidence that exposures and behavior may modify AD risks.

Indexed as

MetabolomeMetabolomicsAgedAged, 80 and overAlkaloidsAlzheimer DiseaseBenzodioxolesBiomarkersChromatography, LiquidCognitive DysfunctionFemaleGlutamineHumansMaleMass SpectrometryMiddle AgedAlkaloidsBenzodioxolesBiomarkersGlutaminePiperidinespiperinePolyunsaturated Alkamides

Identifiers

PMID31828981
PMCPMC6952314
OpenAlexW2996031926

What OpenQuestion holds

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LicenceCC BY
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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.