Abstract
We developed and validated a fast, sensitive, and accurate analytical method using ultra high-pressure liquid chromatography-electrospray ionization tandem mass spectrometry (UHPLC-ESI–MS/MS) for simultaneous extraction and quantification of 5 targeted omega fatty acids on human dried serum spots. MS/MS was performed with multiple reaction monitoring (MRM) mode under negative electrospray ionization. We targeted omega fatty acids which are likely to have a positive effect on various inflammatory reactions such as asthma, chronic obstructive pulmonary diseases and rheumatoid arthritis. If applicable, it is necessary to determine them as asthma biomarkers for intervention and public health. The coefficient of determination (r2) of calibration curve exhibited a good linear relationship between 0.9942 and 0.9963 in a range of 0.05–5 µg mL−1. The analytical method was validated with excellent sensitivity (limit of detection; 0.005–0.01 µg mL−1, limit of quantification; 0.03–0.1 µg mL) that allows targeted analyses of omega fatty acids. We obtained the recoveries of 92.6 to 110.4% (RSD, 0.2–9.6%) for intraday and 92.6 to 107.6% (RSD, 1.4–7.0%) for interday. Clinical correlation between the healthy subjects and asthmatic patients’ sera was evaluated with the ratio of omega-3/omega-6 fatty acids. The developed method combines the advantages of easy handling dried filter paper and UHPLC-MS/MS for effectiveness of extraction and analyses step. We evaluated the validation for the quantification and applicability of human serum as a possible role of asthma biomarkers.
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Abbreviations
- AA:
-
Arachidonic acid
- ALA:
-
Alpha-linolenic acid
- BSA:
-
Bovine serum albumin
- DBS:
-
Dried blood spot
- DHA:
-
Docosahexaenoic acid
- DPA:
-
Docosapentaenoic acid
- EPA:
-
Eicosapentaenoic acid
- GC–MS:
-
Gas chromatography–mass spectroscopy
- IS:
-
Internal standards
- LLE:
-
Liquid–liquid extraction
- MPA:
-
Mobile phase A
- MPB:
-
Mobile phase B
- MRM:
-
Multiple reaction monitoring
- MTBE:
-
Methyl tert-butyl ether
- PLS-DA:
-
Partial least square discriminant analysis
- PUFAs:
-
Polyunsaturated fatty acids
- SPE:
-
Solid phase extraction
- SPM:
-
Specialized pro-resolving mediators
- UHPLC-ESI-MS/MS:
-
Ultra high-pressure liquid chromatography-electrospray ionization tandem mass spectrometry
- VIP:
-
Variable importance in the projection
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This reseach was funded by Duksung Women’s University Research Fund, Seoul, South Korea.
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Lee, H., Yoon, HR. Determination and Application of UHPLC-ESI-MS/MS Based Omega Fatty Acids on PUFA Filter Paper with Human Asthma Serum. Chromatographia 85, 281–294 (2022). https://doi.org/10.1007/s10337-022-04132-4
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DOI: https://doi.org/10.1007/s10337-022-04132-4