Mass spectrometric signatures of the blood plasma metabolome for disease diagnostics

In metabolomics, a large number of small molecules can be detected in a single run. However, metabolomic data do not include the absolute concentrations of each metabolite. Generally, mass spectrometry analyses provide metabolite concentrations that are derived from mass peak intensities, and the pe...

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Bibliographic Details
Published in:Biomedical reports 2016-01, Vol.4 (1), p.122-126
Main Authors: LOKHOV, PETR G, BALASHOVA, ELENA E, VOSKRESENSKAYA, ANNA A, TRIFONOVA, OXANA P, MASLOV, DMITRY L, ARCHAKOV, ALEXANDER I
Format: Article
Language:English
Subjects:
Accuracy
Analysis
Blood plasma
Diabetes mellitus
Diagnostic systems
diagnostics
direct infusion
Endocrinology
Glucose tolerance
Ions
Laboratories
Lung cancer
Mass spectrometry
Mass spectroscopy
metabolic signature
Metabolites
metabolome
Metabolomics
Molecular weight
Mortality
Plasma
Power
Prostate cancer
quintile
Scientific imaging
Signatures
Studies
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Summary:In metabolomics, a large number of small molecules can be detected in a single run. However, metabolomic data do not include the absolute concentrations of each metabolite. Generally, mass spectrometry analyses provide metabolite concentrations that are derived from mass peak intensities, and the peak intensities are strictly dependent on the type of mass spectrometer used, as well as the technical characteristics, options and protocols applied. To convert mass peak intensities to actual concentrations, calibration curves have to be generated for each metabolite, and this represents a significant challenge depending on the number of metabolites that are detected and involved in metabolome-based diagnostics. To overcome this limitation, and to facilitate the development of diagnostic tests based on metabolomics, mass peak intensities may be expressed in quintiles. The present study demonstrates the advantage of this approach. The examples of diagnostic signatures, which were designed in accordance to this approach, are provided for lung and prostate cancer (leading causes of mortality due to cancer in developed countries) and impaired glucose tolerance (which precedes type 2 diabetes, the most common endocrinology disease worldwide).
ISSN:2049-9434
2049-9442
DOI:10.3892/br.2015.548