Direct low field J-edited diffusional proton NMR spectroscopic measurement of COVID-19 inflammatory biomarkers in human serum.
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Published version
Author(s)
Type
Journal Article
Abstract
A JEDI NMR pulse experiment incorporating relaxational, diffusional and J-modulation peak editing has been implemented for a low field (80 MHz proton resonance frequency) spectrometer system to measure quantitatively two recently discovered plasma markers of SARS-CoV-2 infection and general inflammation. JEDI spectra capture a unique signature of two biomarker signals from acetylated glycoproteins (Glyc) and the supramolecular phospholipid composite (SPC) signals that are relatively enhanced by the combination of relaxation, diffusion and J-editing properties of the JEDI experiment that strongly attenuate contributions from the other molecular species in plasma. The SPC/Glyc ratio data were essentially identical in the 600 MHz and 80 MHz spectra obtained (R2 = 0.97) and showed significantly different ratios for control (n = 28) versus SARS-CoV-2 positive patients (n = 29) (p = 5.2 × 10-8 and 3.7 × 10-8 respectively). Simplification of the sample preparation allows for data acquisition in a similar time frame to high field machines (∼4 min) and a high-throughput version with 1 min experiment time could be feasible. These data show that these newly discovered inflammatory biomarkers can be measured effectively on low field NMR instruments that do not not require housing in a complex laboratory environment, thus lowering the barrier to clinical translation of this diagnostic technology.
Date Issued
2022-08-16
Date Acceptance
2022-08-15
Citation
The Analyst, 2022, 147 (19), pp.4213-4221
ISSN
0003-2654
Publisher
Royal Society of Chemistry
Start Page
4213
End Page
4221
Journal / Book Title
The Analyst
Volume
147
Issue
19
Copyright Statement
© The Royal Society of Chemistry 2022. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/35994017
Subjects
Science & Technology
Physical Sciences
Chemistry, Analytical
Chemistry
NUCLEAR-MAGNETIC-RESONANCE
H-1-NMR SPECTROSCOPY
PLASMA-LIPOPROTEINS
BLOOD
GLYCA
URINE
IDENTIFICATION
GLYCOPROTEINS
INFECTION
SPECTRA
Biomarkers
COVID-19
Humans
Phospholipids
Protons
SARS-CoV-2
Humans
Protons
Phospholipids
Biomarkers
COVID-19
SARS-CoV-2
Analytical Chemistry
0301 Analytical Chemistry
0399 Other Chemical Sciences
Publication Status
Published
Coverage Spatial
England
Date Publish Online
2022-08-16