A specific, accurate and sensitive measure of total plasma malondialdehyde by HPLC

Hamdy F. Moselhy, Raymond G. Reid, Saeed Yousef, Susanne P. Boyle

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Malondialdehyde (MDA) is one of the most commonly reported biomarkers of lipid peroxidation in clinical studies. The reaction of thiobarbituric acid (TBA) with MDA to yield a pink chromogen attributable to an MDA-TBA2 adduct is a common assay approach with products being quantified by ultraviolet-Vis assay as nonspecific TBA-reactive substances (TBARS) or chromatographically as MDA. The specificity of the TBARS assay was compared with both chromatographic assays for total plasma MDA. The levels of total plasma MDA were significantly lower than the plasma TBARS in each of the samples examined, and interestingly, the interindividual variation apparent in the level of plasma MDA was not evident in the plasma TBARS assay. Each of the four online chromatographic detectors yielded a precise, sensitive, and accurate determination of total plasma MDA, and selected-ion monitoring was the most-accurate assay (101.3%, n = 4). The online diode array detectors provided good assay specificity (peak purity index of 999), sensitivity, precision, and accuracy. This research demonstrates the inaccuracy that is inherent in plasma TBARS assays, which claim to quantify MDA, and it is proposed that the TBARS approach may limit the likelihood of detecting true differences in the level of lipid peroxidation in clinical studies.
LanguageEnglish
Pages852-858
Number of pages7
JournalJournal of Lipid Research
Volume54
Issue number3
DOIs
Publication statusPublished - 31 Mar 2013

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Malondialdehyde
Assays
High Pressure Liquid Chromatography
Plasmas
Lipid Peroxidation
Detectors
Lipids
Thiobarbituric Acid Reactive Substances
Biomarkers
Diodes
Ions
Monitoring
Research

Keywords

  • thiobarbituric acid-reactive substance
  • assay specificity
  • assay bias
  • lipid peroxidation
  • high-performance liquid chromatography

Cite this

Moselhy, Hamdy F. ; Reid, Raymond G. ; Yousef, Saeed ; Boyle, Susanne P. / A specific, accurate and sensitive measure of total plasma malondialdehyde by HPLC. In: Journal of Lipid Research. 2013 ; Vol. 54 , No. 3. pp. 852-858 .
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A specific, accurate and sensitive measure of total plasma malondialdehyde by HPLC. / Moselhy, Hamdy F.; Reid, Raymond G.; Yousef, Saeed; Boyle, Susanne P.

In: Journal of Lipid Research, Vol. 54 , No. 3, 31.03.2013, p. 852-858 .

Research output: Contribution to journalArticle

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