Evidence map›Paper›PMID 30558115›Full record

ArticleMetabolites2018

Rapid, Reproducible, Quantifiable NMR Metabolomics: Methanol and Methanol: Chloroform Precipitation for Removal of Macromolecules in Serum and Whole Blood.

Cora E McHugh, Thomas L Flott, Casey R Schooff, Zyad Smiley, Michael A Puskarich, Daniel D Myers, John G Younger, Alan E Jones, Kathleen A Stringer

Open access · goldAbstract read
In one paragraph

Article in Metabolites, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.5field-weighted citation impact, top 17% 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

26 citing papers in PubMed, 35 citations in OpenAlex.

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  6. Methods and protocols · 2025
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  10. Applications of chromatographic methods in metabolomics: A review.Journal of chromatography. B, Analytical technologies in the biomedical and life sciences · 2024
    Review
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  17. Observational
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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

9 authors at 3 institutions in 1 country.

Cora E McHughNMR Metabolomics Laboratory, Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA. mchughce@med.umich.edu.ORCID 0000-0002-7857-0236
Thomas L FlottNMR Metabolomics Laboratory, Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA. thflott@med.umich.edu.ORCID 0000-0002-3962-6014
Casey R SchooffNMR Metabolomics Laboratory, Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA. crschooff@gmail.com.
Zyad SmileyNMR Metabolomics Laboratory, Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA. zsmiley93@gmail.com.
Michael A PuskarichDepartment of Emergency Medicine, University of Minnesota, Minneapolis, MN 55455, USA. mike-em@umn.edu.
Daniel D MyersUnit for Laboratory Animal Medicine, University of Michigan, Ann Arbor, MI 48109, USA. ddmyers@med.umich.edu.
John G YoungerAkadeum Life Sciences, Ann Arbor, MI 48103, USA. john@akadeum.com.
Alan E JonesDepartment of Emergency Medicine, University of Mississippi, Jackson, MS 39216, USA. aejones@umc.edu.
Kathleen A StringerNMR Metabolomics Laboratory, Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA. stringek@umich.edu.ORCID 0000-0003-0238-7774
University of Michigan · USUniversity of Minnesota · USUniversity of Mississippi · US

Funding

L-Carnitine Pharmacometabolomics in Sepsis (CaPS)R01GM111400 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI STRINGER, KATHLEEN A · 2016 to 2019
$1.2M
National Institutes of Health GM069438National Institutes of Health GM103799National Institutes of Health GM111400NIGMS NIH HHS R01 GM111400
6 · The paper itself

Abstract

backgroundThough blood is an excellent biofluid for metabolomics, proteins and lipids present in blood can interfere with 1d-¹H NMR spectra and disrupt quantification of metabolites. Here, we present effective macromolecule removal strategies for serum and whole blood (WB) samples.

methodsA variety of macromolecule removal strategies were compared in both WB and serum, along with tests of ultrafiltration alone and in combination with precipitation methods.

resultsIn healthy human serum, methanol:chloroform:water extraction with ultrafiltration was compared to methanol precipitation with and without ultrafiltration. Methods were tested in healthy pooled human serum, and in serum from patients with sepsis. Effects of long-term storage at -80 °C were tested to explore the impact of macromolecule removal strategy on serum from different conditions. In WB a variety of extraction strategies were tested in two types of WB (from pigs and baboons) to examine the impact of macromolecule removal strategies on different samples.

conclusionsIn healthy human serum methanol precipitation of serum with ultrafiltration was superior, but was similar in recovery and variance to methanol:chloroform:water extraction with ultrafiltration in pooled serum from patients with sepsis. In WB, high quality, quantifiable spectra were obtained with the use of a methanol: chloroform precipitation.

Indexed as

1d-1H NMRextractionpharmacometabolomicspreanalytical processingquantitative analysisultrafiltration

Identifiers

PMID30558115
PMCPMC6316042
OpenAlexW2905430911

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.