Cited by 61Metabolomics and Mass Spectrometry StudiesMass Spectrometry Techniques and ApplicationsAdvanced Proteomics Techniques and Applications

Does the mass spectrometer define the marker? A comparison of global metabolite profiling data generated simultaneously via UPLC-MS on two different mass spectrometers

Open access
Gika, Helen G., Theodoridis, Georgios A., Earll, Mark, Snyder, Rodney W., Sumner, Susan J., Wilson, Ian D.·2010·Analytical Chemistry

Abstract

By coupling a single UPLC separation to two different types of mass spectrometer an unbiased comparison of the metabolite profiles produced by each instrument for a set of rat urine samples was obtained. The flow from the UPLC column was split equally and both streams of eluent were simultaneously directed to the inlets of the two mass spectrometers. Mass spectrometry on the eluent was undertaken using a triple quadrupole linear ion trap and a hybrid quadrupole time-of-flight mass spectrometer using both positive and negative ESI. Data from both mass spectrometers were subjected to multivariate statistical analysis, after applying the same data extraction software, and showed the same general pattern of correlation between the samples using both unsupervised and supervised methods of statistical analysis. Based on orthogonal partial least-squares discriminant analysis models a number of ions were recognized as "responsible" for the separation of the animal groups. From the peaks detected, and denoted as significant by the statistical analysis a number of ions were found to be unique to one data set or the other, a result which may have consequences for biomarker discovery and interlaboratory comparisons. The software package used for data analysis also had an effect on the outcome of the statistical analysis.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1021/ac1016612

Cites

20 of 20 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Variables affecting the final data set include sample preparation mode, chromatography method, detection mode, and choice of data reduction methods.

    “These include the mode of sample preparation, method of chromatography, mode of detection, and the choice of data reduction methods (116, 117).”

    From The food metabolome: a window over dietary exposure (2014) · cites this paper as [117]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Gika, H. G., Theodoridis, G. A., Earll, M., Snyder, R. W., Sumner, S. J., & Wilson, I. D.
Affiliations
RTI International (US)
Corresponding author
Theodoridis, Georgios A.
Venue
Analytical Chemistry
Published
2010-09-09
Volume
82
Issue
19
Pages
8226-8234
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W1980053022
Cited by
61
References
20
Citations by year
2026: 1 · 2025: 3 · 2023: 2 · 2022: 3 · 2021: 1 · 2020: 4 · 2019: 3 · 2018: 3 · 2017: 5 · 2016: 6 · 2015: 2 · 2014: 7 · 2013: 9 · 2012: 6
FWCI
2.73
Type
journal article
Language
en
Open access
Locations
  • Analytical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of General Medical Sciences (5R21GM75903, R21GM075903)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
Keywords
UPLC-MS, rat urine, biomarker discovery, interlaboratory comparison, OPLS-DA, data extraction software
MeSH terms
Animals, Chromatography, High Pressure Liquid, Isoniazid, Models, Statistical, Biomarkers, Spectrometry, Mass, Electrospray Ionization, Principal Component Analysis, Rats, Metabolome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review