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Rapid sample preparation and simultaneous quantitation of prostaglandins and lipoxygenase derived fatty acid metabolites by liquid chromatography-mass spectrometry from small sample volumes
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9. Oktober 2008
Abstract
Background: Fatty acid metabolites play a key role in numerous physiological and pathological processes. A rapid liquid chromatography-mass spectrometry assay for the simultaneous determination of prostanoids, isoprostane and lipoxygenase (LOX) derived fatty acid metabolites in a small biological sample of only 20 μL was developed.
Methods: Human plasma samples were applied to a filter spot, extracted without prior derivatization and analyzed within 13 min. Detection of metabolites was performed on a triple quadrupole mass spectrometer in negative multiple-reaction monitoring detection mode. Application of this assay to various biological matrices was performed.
Results: The validated assay was linear over the concentration range of 5–500 nmol/L for prostanoids and isoprostane, 50–5000 nmol/L for LOX-derived metabolites and 400–40,000 nmol/L for fatty acids. Limits of quantitation were 0.4–233 nmol/L, depending on the metabolite. Plasma samples from diabetic patients and controls showed significant increases in (±)9-HODE and 15(S)-HETE with p-values of 0.019 and 0.024, respectively.
Conclusions: The small amount of 20 μL sample volume used in this assay and the demonstrated application to various sample types makes it an ideal routine analysis method for fatty acid metabolites. The resulting values for LOX-derived metabolites in diabetes mellitus type 2 samples support earlier findings about the role of lipid oxidation products in diabetes.
Clin Chem Lab Med 2008;46:1589–97.
Keywords: diabetes; fatty acid metabolites; liquid chromatography-mass spectrometry (LC-MS/MS); lipid oxidation products; prostaglandins
Received: 2008-5-29
Accepted: 2008-8-1
Published Online: 2008-10-9
Published in Print: 2008-11-01
©2008 by Walter de Gruyter Berlin New York
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Schlagwörter für diesen Artikel
diabetes;
fatty acid metabolites;
liquid chromatography-mass spectrometry (LC-MS/MS);
lipid oxidation products;
prostaglandins
Artikel in diesem Heft
- Editorial
- Biochemical markers in clinical cardiology: perspectives from present to future. 1st IFCC-Ortho Clinical Diagnostics Conference on Clinical Diagnosis and the Clinical Laboratory
- Highlight: Cardiovascular Biomarkers
- Reviews
- The clinical impact of the universal diagnosis of myocardial infarction
- Troponin revisited 2008: assay performance
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- Biochemistry of B-type natriuretic peptide – where are we now?
- Clinical relevance of non-cardiac determinants of natriuretic peptide levels
- What is the value of B-type natriuretic peptide testing for diagnosis, prognosis or monitoring of critically ill adult patients in intensive care?
- Natriuretic peptide testing in primary care patients
- Natriuretic peptide testing in emergency settings
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