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Dia KKH, Escobar AR, Qin H, Ye F, Jimenez A, Hasan MA, Hajiaghajani A, Dautta M, Li L, Tseng P. Passive Wireless Porous Biopolymer Sensors for At-Home Monitoring of Oil and Fatty Acid Nutrition. ACS APPLIED BIO MATERIALS 2024; 7:5452-5460. [PMID: 39031088 DOI: 10.1021/acsabm.4c00601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2024]
Abstract
Dietary oils─rich in omega-3, -6, and -9 fatty acids─exhibit critical impacts on health parameters such as cardiovascular function, bodily inflammation, and neurological development. There has emerged a need for low-cost, accessible method to assess dietary oil consumption and its health implications. Existing methods typically require specialized, complex equipment and extensive sample preparation steps, rendering them unsuitable for home use. Addressing this gap, herein, we study passive wireless, biocompatible biosensors that can be used to monitor dietary oils directly from foods either prepared or cooked in oil. This design uses broad-coupled split ring resonators interceded with porous silk fibroin biopolymer (requiring only food-safe materials, such as aluminum foil and biopolymer). These porous biopolymer films absorb oils at rates proportional to their viscosity/fatty acid composition and whose response can be measured wirelessly without any microelectronic components touching food. The engineering and mechanism of such sensors are explored, alongside their ability to measure the oil presence and fatty acid content directly from foods. Its simplicity, portability, and inexpensiveness are ideal for emerging needs in precision nutrition─such sensors may empower individuals to make informed dietary decisions based on direct-from-food measurements.
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Affiliation(s)
- Kazi Khurshidi Haque Dia
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Alberto Ranier Escobar
- Department of Biomedical Engineering, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Huiting Qin
- Material and Manufacturing Technology Program, University of California, Irvine, California 92617, United States
| | - Fan Ye
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Abel Jimenez
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Md Abeed Hasan
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Amirhossein Hajiaghajani
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Manik Dautta
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Lei Li
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
| | - Peter Tseng
- Department of Electrical Engineering and Computer Science, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
- Department of Biomedical Engineering, University of California Irvine, Engineering Hall #3110, Irvine, California 92697, United States
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Kulyk DS, Baryshnikov GV, Damale PS, Maher S, Badu-Tawiah AK. Charge inversion under plasma-nanodroplet reaction conditions excludes Fischer esterification for unsaturated fatty acids: a chemical approach for type II isobaric overlap. Chem Sci 2024; 15:914-922. [PMID: 38239686 PMCID: PMC10793210 DOI: 10.1039/d3sc05369e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/10/2023] [Indexed: 01/22/2024] Open
Abstract
Direct infusion ionization methods provide the highest throughput strategy for mass spectrometry (MS) analysis of low-volume samples. But the trade-off includes matrix effects, which can significantly reduce analytical performance. Herein, we present a novel chemical approach to tackle a special type of matrix effect, namely type II isobaric overlap. We focus on detailed investigation of a nanodroplet-based esterification chemistry for differentiating isotopologue [M + 2] signal due to unsaturated fatty acid (FA) from the monoisotopic signal from a saturated FA. The method developed involves the online fusion of nonthermal plasma with charged nanodroplets, enabling selective esterification of saturated FAs. We discovered that unsaturated FAs undergo spontaneous intramolecular reaction via a novel mechanism based on a carbocation intermediate to afford a protonated lactone moiety (resonance stabilized cyclic carbonium ion), whose mass is the same as the original protonated unsaturated FA. Therefore, the monoisotopic signal from any saturated FA can be selectively shifted away from the mass-to-charge position where the isobaric interference occurs to enable effective characterization by MS. The mechanism governing the spontaneous intramolecular reactions for unsaturated FAs was validated with DFT calculations, experimentation with standards, and isotope labeling. This novel insight achieved via the ultrafast plasma-nanodroplet reaction environment provides a potentially useful synthetic pathway to achieve catalyst-free lactone preparation. Analytically, we believe the performance of direct infusion MS can be greatly enhanced by combining our approach with prior sample enrichment steps for applications in biomedicine and food safety. Also, combination with portable mass spectrometers can improve the efficiency of field studies since front-end separation is not possible under such conditions.
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Affiliation(s)
- Dmytro S Kulyk
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Ave. Columbus OH 43210 USA
| | - Glib V Baryshnikov
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University SE-60174 Norrköping Sweden
| | - Purva S Damale
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Ave. Columbus OH 43210 USA
| | - Simon Maher
- Department of Electrical Engineering and Electronics, University of Liverpool Liverpool UK
| | - Abraham K Badu-Tawiah
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Ave. Columbus OH 43210 USA
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3
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Cliffe FE, Madden C, Costello P, Devitt S, Mukkunda SR, Keshava BB, Fearnhead HO, Vitkauskaite A, Dehkordi MH, Chingwaru W, Przyjalgowski M, Rebrova N, Lyons M. WITHDRAWN: Mera: A scalable high throughput automated micro-physiological system. SLAS DISCOVERY : ADVANCING LIFE SCIENCES R & D 2023; 29:134. [PMID: 38101569 DOI: 10.1016/j.slasd.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 01/16/2023] [Accepted: 01/21/2023] [Indexed: 12/17/2023]
Affiliation(s)
- Finola E Cliffe
- Hooke Bio Ltd, L4A Smithstown Industrial Estate, Shannon, Co. Clare, V14 XH92, Ireland
| | - Conor Madden
- Hooke Bio Ltd, L4A Smithstown Industrial Estate, Shannon, Co. Clare, V14 XH92, Ireland
| | - Patrick Costello
- Hooke Bio Ltd, L4A Smithstown Industrial Estate, Shannon, Co. Clare, V14 XH92, Ireland
| | - Shane Devitt
- Hooke Bio Ltd, L4A Smithstown Industrial Estate, Shannon, Co. Clare, V14 XH92, Ireland
| | - Sumir Ramesh Mukkunda
- Hooke Bio Ltd, L4A Smithstown Industrial Estate, Shannon, Co. Clare, V14 XH92, Ireland
| | | | - Howard O Fearnhead
- Pharmacology and Therapeutics, Biomedical Sciences, Dangan, NUI Galway, Galway, Ireland
| | - Aiste Vitkauskaite
- Pharmacology and Therapeutics, Biomedical Sciences, Dangan, NUI Galway, Galway, Ireland
| | - Mahshid H Dehkordi
- Pharmacology and Therapeutics, Biomedical Sciences, Dangan, NUI Galway, Galway, Ireland
| | - Walter Chingwaru
- Pharmacology and Therapeutics, Biomedical Sciences, Dangan, NUI Galway, Galway, Ireland
| | - Milosz Przyjalgowski
- Centre for Advanced Photonics and Process Analysis, Munster Technological University, Cork, T12 P928, Ireland
| | - Natalia Rebrova
- Centre for Advanced Photonics and Process Analysis, Munster Technological University, Cork, T12 P928, Ireland
| | - Mark Lyons
- Hooke Bio Ltd, L4A Smithstown Industrial Estate, Shannon, Co. Clare, V14 XH92, Ireland
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4
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Eroshchenko NN, Veselov VV, Pirogov AV, Danilova EY, Kirushin AN, Paravyan AL, Cravotto G. Development and validation of a HPLC-MS/MS method for the analysis of fatty acids - in the form of FAME ammonium adducts - in human whole blood and erythrocytes to determine omega-3 index. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1227:123799. [PMID: 37379757 DOI: 10.1016/j.jchromb.2023.123799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/02/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023]
Abstract
Recent scientific studies in the field of health and nutrition have unanimously affirmed the importance of consuming the omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), because of their cardioprotective properties. Fatty acid profiling in erythrocyte membranes allows the omega-3 index, which is a recognized indicator of the risk of developing cardiovascular disease, to be calculated. One consequence of the upward trend in healthy lifestyles and longevity is an increase in the number of studies into the omega-3 index, which requires a reliable method for the quantitative analysis of fatty acids. This article describes the development and validation of a sensitive and reproducible liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method for the quantitative analysis of 23 fatty acids (in the form of fatty acid methyl esters, FAMEs) in 40 µl of whole blood and erythrocytes. The list of acids includes saturated, omega-9 unsaturated, omega-6 unsaturated and omega-3 unsaturated fatty acids as well as their trans-isomers. The limit of quantitation was 250 ng ml-1 for C12:0, C16:0 and C18:0; and 62.5 ng ml-1 for other FAMEs, including EPA, DHA and trans-isomers of FAME C16:1, C18:1 and C18:2 n-6. Sample preparation for fatty acid (FA) esterification/methylation with boron trifluoride-methanol (BF3) has been optimized. Chromatographic separation has been carried out on a C8 column in gradient mode using a mixture of acetonitrile, isopropanol and water with the addition of 0.1% formic acid and 5 mM ammonium formate. As a result, the problem of separating the cis- and trans-isomers of FAME C16:1, C18:1 and C18:2 n-6 has been solved. The electrospray ionization mass spectrometry (ESI-MS) detection of FAMEs, in the form of ammonium adducts, has been optimized for the first time, which has made the method more sensitive that when the protonated species are used. This method has been applied to 12 samples from healthy subjects that consumed omega-3 supplements and has proven to be a reliable tool for determining the omega-3 index.
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Affiliation(s)
- N N Eroshchenko
- Biomedical Science and Technology Park, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8 Trubetskaya ul, 119991 Moscow, Russia.
| | - V V Veselov
- Biomedical Science and Technology Park, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8 Trubetskaya ul, 119991 Moscow, Russia
| | - A V Pirogov
- Chemistry Department, M.V. Lomonosov Moscow State University, Lenih Hills, d. 1, str. 3., 119991 Moscow, Russia
| | - E Y Danilova
- Chemistry Department, M.V. Lomonosov Moscow State University, Lenih Hills, d. 1, str. 3., 119991 Moscow, Russia
| | - A N Kirushin
- Biomedical Science and Technology Park, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8 Trubetskaya ul, 119991 Moscow, Russia
| | - A L Paravyan
- Biomedical Science and Technology Park, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8 Trubetskaya ul, 119991 Moscow, Russia
| | - G Cravotto
- Department of Drug Science and Technology, University of Turin, Via P. Giuria 9, 10125 Turin, Italy
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5
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Wang Y, Yin T, Li J, Luo X, Liu K, Long T, Shen Y, Cheng L. Reduced levels of serum EPA and DHA identified in patients with non-small-cell lung cancer using a new rapid validated LC-MS/MS method. SLAS DISCOVERY : ADVANCING LIFE SCIENCES R & D 2023; 28:12-18. [PMID: 36464159 DOI: 10.1016/j.slasd.2022.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/01/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022]
Abstract
BACKGROUND Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been suggested to play roles in various diseases, yet there is little data on their changes in patients with non-small-cell lung cancer (NSCLC). A simple LC-MS/MS method for EPA and DHA determination is critical to exploring EPA and DHA level changes in NSCLC patients. METHODS 25 µL of serum was mixed with 25 µL of internal standard working solution, and then 450 µL of acetonitrile for protein precipitation. After vortex and centrifugation, the supernatant was directly used for LC-MS/MS analysis. The method was well validated with linearity, precision, recovery, and matrix effect. The concentrations of EPA and DHA in serum samples from 211 NSCLC patients and 227 healthy controls were determined by this LC-MS/MS method. RESULTS Good separation and reliable quantification of EPA and DHA in serum samples were achieved by our method. Compared with healthy controls, serum EPA and DHA were significantly reduced in both adenocarcinoma and squamous cell carcinoma patients. The concentrations of EPA and DHA showed a progressive decrease in healthy controls, early- and advanced-stage NSCLC patients. CONCLUSIONS This study identified significant reductions in serum EPA and DHA in NSCLC patients through the development of an LC-MS/MS method.
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Affiliation(s)
- Yi Wang
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China
| | - Tongxin Yin
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China
| | - Jiaoyuan Li
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China
| | - Xia Luo
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China
| | - Ke Liu
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China
| | - Tingting Long
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China
| | - Ying Shen
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China.
| | - Liming Cheng
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Wuhan 430030, PR China.
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6
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Li F, Zhang Q, Tong Y, Jiang J, Liu J. Development and validation of a liquid chromeatography-tandem mass spectrometry method for simultaneous quantification of medium- and long-chain saturated fatty acids in hamster plasma samples. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9280. [PMID: 35229921 DOI: 10.1002/rcm.9280] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
RATIONALE Saturated fatty acids (SFAs) are associated with many diseases in humans. Developing a reliable analytical method to analyze SFAs in plasma is essential to understand their biological activities. An ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC/MS/MS) method has been developed for the quantification of medium- and long-chain SFAs (M/LCSFAs) in hamster plasma. METHODS We compared three methods (DOLE, Folch and MTBE) for extracting M/LCSFAs from plasma. The M/LCSFA derivatives were separated using a C18 column. The method was validated and applied to analyze M/LCSFA concentrations in normal-fat diet (NFD) and high-fat diet (HFD) hamster plasma. RESULTS Among the three extraction methods, the DOLE method had the highest extraction recovery and was simple to operate with a short incubation time. All of the calibration curves exhibited good linear relationships (r ≥ 0.9958). The results for selectivity, accuracy, precision, matrix effects and recovery were all within the acceptance criteria. In HFD hamster plasma, the concentration of M/LCSFAs with even-carbon chain length was significantly increased. CONCLUSIONS A simple, robust and reproducible method for the simultaneous quantification of M/LCSFAs by UHPLC/MS/MS was developed and validated. The method gave successfully quantification of M/LCSFAs in plasma samples from NFD and HFD hamsters.
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Affiliation(s)
- Fan Li
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Qingli Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Yue Tong
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jianlan Jiang
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Jia Liu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
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7
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Wang Y, Zhang X, Hu W, Dong C, Fu D, Habtegabir SG, Han Y. Ultra-fast screening of free fatty acids in human plasma using ion mobility mass spectrometry. J Sep Sci 2022; 45:1818-1826. [PMID: 35340115 DOI: 10.1002/jssc.202200037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/10/2022] [Accepted: 03/22/2022] [Indexed: 11/06/2022]
Abstract
Free fatty acids involved in many metabolic regulations in human body. In this work, an ultra-fast screening method was developed for the analysis of free fatty acids using trapped ion mobility spectrometry coupled with mass spectrometry. Thirty-three free fatty acids possessing different unsaturation degrees and different carbon chain lengths were baseline separated and characterized within milliseconds. Saturated, monounsaturated, and polyunsaturated free fatty acids showed different linearities between collision cross section values and m/z. Establishment of correlations between structures and collision cross section values provided additional qualitative information and made it possible to determine free fatty acids which were out of the standards pool but possessed the confirmed linearity. Gas-phase separation made the quantitative analysis reliable and repeatable at a much lower time cost than chromatographic methods. The sensitivity was comparable to and even better than the reported results. The method was validated and applied to profiling free fatty acids in human plasma. Saturated free fatty acids abundance in the fasting state was found to be lower than that in the postprandial state, while unsaturated species abundance was found higher. The method was fast and robust with minimum sample pretreatment, so it was promising in high-throughput screening of free fatty acids. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yinghao Wang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Xianxie Zhang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China.,Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Wenya Hu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Chenglong Dong
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Dali Fu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Sara Girmay Habtegabir
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Yehua Han
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
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8
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Koch E, Wiebel M, Hopmann C, Kampschulte N, Schebb NH. Rapid quantification of fatty acids in plant oils and biological samples by LC-MS. Anal Bioanal Chem 2021; 413:5439-5451. [PMID: 34296318 PMCID: PMC8405509 DOI: 10.1007/s00216-021-03525-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/21/2021] [Accepted: 07/01/2021] [Indexed: 12/22/2022]
Abstract
Analysis of fatty acids (FA) in food and biological samples such as blood is indispensable in modern life sciences. We developed a rapid, sensitive and comprehensive method for the quantification of 41 saturated and unsaturated fatty acids by means of LC-MS. Optimized chromatographic separation of isobaric analytes was carried out on a C8 reversed phase analytical column (100 × 2.1 mm, 2.6 μm core–shell particle) with a total run time of 15 min with back pressure lower than 300 bar. On an old triple quadrupole instrument (3200, AB Sciex), pseudo selected reaction monitoring mode was used for quantification of the poorly fragmenting FA, yielding limits of detection of 5–100 nM. Sample preparation was carried out by removal of phospholipids and triglycerides by solid-phase extraction (non-esterified fatty acids in oils) or saponification in iso-propanol (fatty acyls). This is not only a rapid strategy for quantification of fatty acyls, but allows the direct combination with the LC-MS-based analysis of fatty acid oxidation products (eicosanoids and other oxylipins) from the same sample. The concentrations of fatty acyls determined by means of LC-MS were consistent with those from GC-FID analysis demonstrating the accuracy of the developed method. Moreover, the method shows high precisions with a low intra-day (≤ 10% for almost all fatty acids in plasma and ≤ 15% in oils) and inter-day as well as inter-operator variability (< 20%). The method was successfully applied on human plasma and edible oils. The possibility to quantify non-esterified fatty acids in samples containing an excess of triacylglycerols and phospholipids is a major strength of the described approach allowing to gain new insights in the composition of biological samples.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany
| | - Michelle Wiebel
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany
| | - Carolin Hopmann
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany
| | - Nadja Kampschulte
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119, Wuppertal, Germany.
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9
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Zito P, Smith DF, Cao X, Ghannam R, Tarr MA. Barium ion adduct mass spectrometry to identify carboxylic acid photoproducts from crude oil-water systems under solar irradiation. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020; 22:2313-2321. [PMID: 33150906 DOI: 10.1039/d0em00390e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Petroleum derived dissolved organic matter (DOMHC) samples were successfully cationized with barium, revealing many [M-H + Ba]+ peaks in both dark and simulated sunlight treatments. The DOMHC samples generated after light exposure exhibited a greater number of [M-H + Ba]+ peaks compared to the dark control. Multiple [M-H + Ba]+ peaks were investigated in the irradiated DOMHC using low resolution MS/MS in order to confirm the presence of diagnostic fragment ions, m/z 139, 155 and 196 in each treatment. Due to the high complexity of the bariated DOMHC mixture, Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS/MS) was employed to obtain molecular level information for both irradiated and dark treatments. The irradiated DOMHC treatments had more bariated oxygenated species over a wide range of H/C and O/C when compared to the dark controls. Doubly bariated species were also observed in DOMHC, which provides evidence that photochemistry transforms DOMHC to even more complex mixtures with multiple oxygenations per molecule. This study provides evidence that barium adduct mass spectrometry can be successfully applied to DOMHC screening for the presence of COOHs, both in dark samples and solar irradiated samples. Furthermore, direct evidence and molecular composition of aqueous phase crude oil photoproducts is provided by this technique.
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Affiliation(s)
- Phoebe Zito
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA. and Pontchartrain Institute for Environmental Sciences, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, Louisiana 70148, USA
| | - Donald F Smith
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - Xian Cao
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
| | - Rana Ghannam
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA. and Pontchartrain Institute for Environmental Sciences, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, Louisiana 70148, USA
| | - Matthew A Tarr
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
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10
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Lillja J, Duncan KD, Lanekoff I. Determination of Monounsaturated Fatty Acid Isomers in Biological Systems by Modeling MS 3 Product Ion Patterns. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:2479-2487. [PMID: 32677833 DOI: 10.1021/jasms.0c00194] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Unsaturated free fatty acids are natively present in biological samples as isomers, where double bonds can be situated on different carbons in the acyl chain. While these isomers can have different actions and impacts on biological systems, they are inherently difficult to identify and differentiate by mass spectrometry alone. To address this challenge, several techniques for derivatization of the double bond or metal cationization at the carboxylic group have yielded diagnostic product ions for the respective isomer in tandem mass spectrometry. However, diagnostic product ions do not necessarily reflect quantitative isomeric ratios since fatty acid isomers have different ionization and fragmentation efficiencies. Here, we introduce a simple and rapid approach to predict the quantitative ratio of isomeric monounsaturated fatty acids. Specifically, empirically derived MS3 product ion patterns from fatty acid silver adducts are modeled using a stepwise linear model. This model is then applied to predict the proportion oleic and vaccenic acid in chemically complex samples at individual concentrations between 0.45 and 5.25 μM, with an average accuracy and precision below 2 and 5 mol %, respectively. We show that by simply including silver ions in the electrospray solvent, isomeric ratios are rapidly predicted in neat standards, rodent plasma, and tissue extract. Furthermore, we use the method to directly map isomeric ratios in tissue sections using nanospray desorption electrospray ionization MS3 imaging without any sample preparation or modification to the instrumental setup. Ultimately, this approach provides a simple and rapid solution to differentiate monounsaturated fatty acids using commonly available commercial mass spectrometers without any instrumental modifications.
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Affiliation(s)
- Johan Lillja
- Department of Chemistry - BMC, Uppsala University, 751 24 Uppsala, Sweden
| | - Kyle D Duncan
- Department of Chemistry - BMC, Uppsala University, 751 24 Uppsala, Sweden
| | - Ingela Lanekoff
- Department of Chemistry - BMC, Uppsala University, 751 24 Uppsala, Sweden
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11
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Randolph CE, Blanksby SJ, McLuckey SA. Enhancing detection and characterization of lipids using charge manipulation in electrospray ionization-tandem mass spectrometry. Chem Phys Lipids 2020; 232:104970. [PMID: 32890498 PMCID: PMC7606777 DOI: 10.1016/j.chemphyslip.2020.104970] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/25/2020] [Accepted: 08/31/2020] [Indexed: 12/14/2022]
Abstract
Heightened awareness regarding the implication of disturbances in lipid metabolism with respect to prevalent human-related pathologies demands analytical techniques that provide unambiguous structural characterization and accurate quantitation of lipids in complex biological samples. The diversity in molecular structures of lipids along with their wide range of concentrations in biological matrices present formidable analytical challenges. Modern mass spectrometry (MS) offers an unprecedented level of analytical power in lipid analysis, as many advancements in the field of lipidomics have been facilitated through novel applications of and developments in electrospray ionization tandem mass spectrometry (ESI-MS/MS). ESI allows for the formation of intact lipid ions with little to no fragmentation and has become widely used in contemporary lipidomics experiments due to its sensitivity, reproducibility, and compatibility with condensed-phase modes of separation, such as liquid chromatography (LC). Owing to variations in lipid functional groups, ESI enables partial chemical separation of the lipidome, yet the preferred ion-type is not always formed, impacting lipid detection, characterization, and quantitation. Moreover, conventional ESI-MS/MS approaches often fail to expose diverse subtle structural features like the sites of unsaturation in fatty acyl constituents or acyl chain regiochemistry along the glycerol backbone, representing a significant challenge for ESI-MS/MS. To overcome these shortcomings, various charge manipulation strategies, including charge-switching, have been developed to transform ion-type and charge state, with aims of increasing sensitivity and selectivity of ESI-MS/MS approaches. Importantly, charge manipulation approaches afford enhanced ionization efficiency, improved mixture analysis performance, and access to informative fragmentation channels. Herein, we present a critical review of the current suite of solution-based and gas-phase strategies for the manipulation of lipid ion charge and type relevant to ESI-MS/MS.
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Affiliation(s)
- Caitlin E Randolph
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-2084, USA
| | - Stephen J Blanksby
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Scott A McLuckey
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-2084, USA.
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12
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Charles L, Mondal T, Greff V, Razzini M, Monnier V, Burel A, Carapito C, Lutz JF. Optimal conditions for tandem mass spectrometric sequencing of information-containing nitrogen-substituted polyurethanes. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8815. [PMID: 32311797 DOI: 10.1002/rcm.8815] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/13/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
RATIONALE To prevent solubility issues faced with sequence-defined polyurethanes, a new family of digital polyurethanes was conceived with the alkyl coding chain held by the carbamate nitrogen (N) atom and CH3 instead of OH as the ϖ termination. This led to different dissociation mechanisms that were explored prior to optimizing tandem mass spectrometric (MS/MS) sequencing. METHODS N-Substituted polyurethanes (N-R PUs) were dissolved in methanol and subjected to collision-induced dissociation (CID) as deprotonated chains in the negative ion mode, and as ammonium and sodium adducts in the positive ion mode, using electrospray ionization (ESI) as the ionization technique. Their dissociation behavior was thoroughly investigated using a quadrupole time-of-flight (QTOF) instrument in order to provide accurate mass measurements to support proposed fragmentation mechanisms. RESULTS While O-(CO) bonds were broken in N-H PUs, the CH2 -O linkage between repeating units was cleaved upon CID of N-R PUs. This main process occurred either from deprotonated molecules or from cationized chains but was followed by different rearrangements, producing up to four product ion series. Yet, MS/MS spectra could be drastically simplified for precursor ions having their acidic α group methylated, as was found to spontaneously occur upon storage in methanol. CONCLUSIONS Using experimental conditions aimed at avoiding any reactive proton in precursor ions (no acidic end-groups and alkali adduction), full coverage sequence of N-R PUs was successfully achieved with the single ion series observed in MS/MS, opening a promising perspective for reading large amounts of information stored in these dyad-encoded polymers.
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Affiliation(s)
- Laurence Charles
- Aix Marseille Univ, CNRS, ICR, Institut de Chimie Radicalaire, Marseille, France
| | - Tathagata Mondal
- University de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, France
| | - Vincent Greff
- University de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, France
| | - Mattia Razzini
- University de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, France
| | - Valérie Monnier
- Aix Marseille Univ, CNRS, Fédération des Sciences Chimiques de Marseille, Marseille, France
| | - Alexandre Burel
- CNRS, Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO), IPHC, Université de Strasbourg, Strasbourg, France
| | - Christine Carapito
- CNRS, Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO), IPHC, Université de Strasbourg, Strasbourg, France
| | - Jean-François Lutz
- University de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, France
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13
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Öztürk Er E, Şahin A, Bakırdere S. Accurate, sensitive determination of omega-6 and omega-3 polyunsaturated fatty acids in human plasma, urine samples. Biomed Chromatogr 2020; 34:e4951. [PMID: 32706403 DOI: 10.1002/bmc.4951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/14/2020] [Accepted: 07/21/2020] [Indexed: 11/07/2022]
Abstract
Quantitative determination of omega-6 and omega-3 polyunsaturated fatty acids in human plasma and urine with high accuracy and precision provides significant information to monitor the underlying etiology of several diseases. In this regard, liquid chromatography-mass spectrometry is a good choice owing to its great selectivity and sensitivity. Additionally, the hybrid quadrupole-time of flight-mass spectrometer systems provides easy identification of target compounds with superior mass measurements. In this study, an analytical method has been developed for simple, accurate and simultaneous determination of linoleic acid, arachidonic acid, docosahexaenoic acid and eicosapentaenoic acid in a short chromatographic analysis period. The developed method is suitable for the quantitative detection of these four compounds with detection limits ranging between 1.1-3.0 ng ml-1 and its applicability was assessed in human urine and plasma samples. As a result, acceptable accuracy (between 83 and 111%) and good precision (<6%) were obtained for target compounds using matrix matching calibration strategy.
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Affiliation(s)
- Elif Öztürk Er
- Department of Chemical Engineering, Yıldız Technical University, İstanbul, Turkey
| | - Ayşe Şahin
- Department of Pediatric, Şişli Hamidiye Etfal Training and Research Hospital, İstanbul, Turkey
| | - Sezgin Bakırdere
- Department of Chemistry, Yıldız Technical University, İstanbul, Turkey
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14
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Ahern KW, Serbulea V, Wingrove CL, Palas ZT, Leitinger N, Harris TE. Regioisomer-independent quantification of fatty acid oxidation products by HPLC-ESI-MS/MS analysis of sodium adducts. Sci Rep 2019; 9:11197. [PMID: 31371760 PMCID: PMC6671977 DOI: 10.1038/s41598-019-47693-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/22/2019] [Indexed: 01/08/2023] Open
Abstract
Despite growing acknowledgement of the role of oxidized fatty acids (oxFA) as cellular signaling molecules and in the pathogenesis of disease, developing methods to measure these species in biological samples has proven challenging. Here we describe a novel method utilizing HPLC-ESI-MS/MS to identify and quantify multiple full-length oxFA species in a regioisomer-independent manner without the need for time-consuming sample preparation or derivatization. Building on recent progress in the characterization of FA and their oxidation products by MS/MS, we employed positive-ion ionization by measuring sodium adducts in conjunction with Differential Energy Qualifier Ion Monitoring to unequivocally verify the presence of the hydroperoxide, hydroxide, and ketone oxidation products of linoleic and arachidonic acid. Our HPLC method achieved separation of these oxidized species from their unoxidized counterparts while maintaining regioisomer-independent elution, allowing quantification over a 5 log10 range with a lower limit of quantification of 0.1 picomoles. With a simple sample preparation and a runtime as low as 11 minutes, our method allows the rapid and facile detection and measurement of full-length oxFA in biological samples. We believe this approach will allow for new insight and further investigation into the role of oxFA in metabolic disease.
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Affiliation(s)
- Katelyn W Ahern
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA, 22908, United States
| | - Vlad Serbulea
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA, 22908, United States
| | - Catherine L Wingrove
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA, 22908, United States
| | - Zachary T Palas
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA, 22908, United States
| | - Norbert Leitinger
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA, 22908, United States
| | - Thurl E Harris
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA, 22908, United States.
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15
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Narreddula VR, Boase NR, Ailuri R, Marshall DL, Poad BL, Kelso MJ, Trevitt AJ, Mitchell TW, Blanksby SJ. Introduction of a Fixed-Charge, Photolabile Derivative for Enhanced Structural Elucidation of Fatty Acids. Anal Chem 2019; 91:9901-9909. [DOI: 10.1021/acs.analchem.9b01566] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Venkateswara R. Narreddula
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Nathan R. Boase
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Ramesh Ailuri
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - David L. Marshall
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Berwyck L.J. Poad
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Michael J. Kelso
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Adam J. Trevitt
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Todd W. Mitchell
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Stephen J. Blanksby
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia
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16
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Serafim V, Tiugan DA, Andreescu N, Mihailescu A, Paul C, Velea I, Puiu M, Niculescu MD. Development and Validation of a LC⁻MS/MS-Based Assay for Quantification of Free and Total Omega 3 and 6 Fatty Acids from Human Plasma. Molecules 2019; 24:molecules24020360. [PMID: 30669503 PMCID: PMC6359656 DOI: 10.3390/molecules24020360] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 01/13/2019] [Accepted: 01/18/2019] [Indexed: 12/23/2022] Open
Abstract
Few high-performance liquid chromatography⁻tandem mass spectrometry (LC-MS/MS) methods have been developed for the full quantitation of fatty acids from human plasma without derivatization. Therefore, we propose a method that requires fewer sample preparation steps, which can be used for the quantitation of several polyunsaturated fatty acids in human plasma. The method offers rapid, accurate, sensitive, and simultaneous quantification of omega 3 (α-linolenic, eicosapentaenoic, and docosahexaenoic acids) and omega 6 fatty acids (arachidonic and linoleic acids) using high-performance LC-MS/MS. The selected fatty acids were analysed in lipid extracts from both free and total forms. Chromatographic separation was achieved using a reversed phase C18 column with isocratic flow using ammonium acetate for improving negative electrospray ionization (ESI) response. Mass detection was performed in multiple reaction monitoring (MRM) mode, and deuterated internal standards were used for each target compound. The limits of quantification were situated in the low nanomolar range, excepting linoleic acid, for which the limit was in the high nanomolar range. The method was validated according to the U.S. Department of Health and Human Services guidelines, and offers a fast, sensitive, and reliable quantification of selected omega 3 and 6 fatty acids in human plasma.
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Affiliation(s)
- Vlad Serafim
- Genetics Discipline, Centre of Genomic Medicine Timișoara, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
| | - Diana-Andreea Tiugan
- Genetics Discipline, Centre of Genomic Medicine Timișoara, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
- "Louis Țurcanu" Clinical Emergency Hospital for Children, No 2, Iosif Nemoianu St., Timișoara 300011, Romania.
| | - Nicoleta Andreescu
- Genetics Discipline, Centre of Genomic Medicine Timișoara, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
- "Louis Țurcanu" Clinical Emergency Hospital for Children, No 2, Iosif Nemoianu St., Timișoara 300011, Romania.
| | - Alexandra Mihailescu
- Genetics Discipline, Centre of Genomic Medicine Timișoara, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
| | - Corina Paul
- Pediatric Department, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
| | - Iulian Velea
- Pediatric Department, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
| | - Maria Puiu
- Genetics Discipline, Centre of Genomic Medicine Timișoara, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
- "Louis Țurcanu" Clinical Emergency Hospital for Children, No 2, Iosif Nemoianu St., Timișoara 300011, Romania.
| | - Mihai Dinu Niculescu
- Genetics Discipline, Centre of Genomic Medicine Timișoara, "Victor Babeș" University of Medicine and Pharmacy, No 2, Eftimie Murgu Square, Timișoara 300041, Romania.
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17
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Viswanathan S, Verma PRP, Ganesan M. A Validation and Estimation of Total Eicosapentaenoic and Docosahexaenoic acids Using LC-MS/MS with Rapid Hydrolysis Enzymatic Method for Hydrolysis of Omega Lipids in Human Plasma and its Application in the Pharmacokinetic Study. CURR PHARM ANAL 2019. [DOI: 10.2174/1573412914666180730094803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:In this study, we have developed a novel, rapid enzymatic hydrolysis method for conversion of omega lipids (omega fatty acid triglycerides, phospholipids, omega conjugates) in to free fatty acids at room temperature using lipase and esterase enzymes. </P><P> Objective: To develop simple enzymatic hydrolysis and rapid sample extraction method for quantification of free (un-esterified) and conjugated (esterified) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) to provide the total EPA and DHA lipids present in human plasma. Quantification of total EPA/DHA was performed using liquid chromatography and tandem mass spectrometer instrument.Methods:The plasma sample is digested with lipase and esterase enzymes and extracted by using combined precipitation and liquid-liquid techniques. The LC-MS/MS method was optimized using EPA-D5 and DHA-D5 as labeled internal standards for EPA/DHA respectively. The analytical method is validated, utilized for simultaneous quantification of total EPA and DHA lipids in plasma collected from healthy human volunteers clinical study.Results:The reproducibility of the established enzymatic hydrolysis method was demonstrated by incurred sample reanalysis and the results for total EPA and DHA lipid were 93.33% and 96.67% respectively. The pharmacokinetic and statistical analysis was performed using baseline corrected concentration of total EPA and DHA lipids.Conclusion:The enzymatic hydrolysis method for conversion of omega fatty acid triglycerides, phospholipids, omega conjugates in to free fatty acid was reported first time for the quantitative application. The shorter time for sample workup procedure, simple enzymatic hydrolysis at room temperature and 3 minutes chromatography run time are well suitable for bioavailability/ bioequivalence studies.
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Affiliation(s)
- Sekarbabu Viswanathan
- Quality Assurance Department, Micro Therapeutic Research Laboratories Private Limited, Chennai, 600059, India
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18
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Khoury S, Canlet C, Lacroix MZ, Berdeaux O, Jouhet J, Bertrand-Michel J. Quantification of Lipids: Model, Reality, and Compromise. Biomolecules 2018; 8:E174. [PMID: 30558107 PMCID: PMC6316828 DOI: 10.3390/biom8040174] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 11/30/2018] [Accepted: 12/04/2018] [Indexed: 12/30/2022] Open
Abstract
Lipids are key molecules in various biological processes, thus their quantification is a crucial point in a lot of studies and should be taken into account in lipidomics development. This family is complex and presents a very large diversity of structures, so analyzing and quantifying all this diversity is a real challenge. In this review, the different techniques to analyze lipids will be presented: from nuclear magnetic resonance (NMR) to mass spectrometry (with and without chromatography) including universal detectors. First of all, the state of the art of quantification, with the definitions of terms and protocol standardization, will be presented with quantitative lipidomics in mind, and then technical considerations and limitations of analytical chemistry's tools, such as NMR, mass spectrometry and universal detectors, will be discussed, particularly in terms of absolute quantification.
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Affiliation(s)
- Spiro Khoury
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, 9E Boulevard Jeanne d'Arc, F-21000 Dijon, France.
- French LipidomYstes Network, 31000 Toulouse, France.
| | - Cécile Canlet
- Toxalim, Research Centre in Food Toxicology, Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, F-31027 Toulouse, France.
- Axiom Platform, MetaToul-MetaboHUB, National Infrastructure for Metabolomics and Fluxomics, F-31027 Toulouse, France.
| | - Marlène Z Lacroix
- INTHERES, Université de Toulouse, INRA, ENVT, 31432 Toulouse, France.
| | - Olivier Berdeaux
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, 9E Boulevard Jeanne d'Arc, F-21000 Dijon, France.
- French LipidomYstes Network, 31000 Toulouse, France.
| | - Juliette Jouhet
- French LipidomYstes Network, 31000 Toulouse, France.
- Laboratoire de Physiologie Cellulaire et Végétale, Université Grenoble Alpes, CNRS, INRA, CEA, 38000 Grenoble, France.
| | - Justine Bertrand-Michel
- French LipidomYstes Network, 31000 Toulouse, France.
- MetaToul-Lipidomic Core Facility, MetaboHUB, I2MC U1048, Inserm, 31432 Toulouse, France.
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19
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Borden SA, Damer HN, Krogh ET, Gill CG. Direct quantitation and characterization of fatty acids in salmon tissue by condensed phase membrane introduction mass spectrometry (CP-MIMS) using a modified donor phase. Anal Bioanal Chem 2018; 411:291-303. [PMID: 30470916 DOI: 10.1007/s00216-018-1467-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/15/2018] [Accepted: 10/31/2018] [Indexed: 12/15/2022]
Abstract
Existing mass spectrometric methods for the analysis of fatty acids often require derivatization, chromatographic separations, and/or extensive sample preparation. Direct mass spectrometry strategies can avoid these requirements, but may also suffer from poor quantitation and/or lack of sensitivity. Condensed phase-membrane introduction mass spectrometry (CP-MIMS) provides direct quantitative measurements of analytes in complex samples with little or no sample preparation. CP-MIMS uses a semipermeable membrane to transfer neutral, hydrophobic compounds from real-world samples to a mass spectrometer. The results presented utilize aqueous/organic sample solvent (donor) mixtures to allow for the sensitive (pptr) detection of a range of fatty acids. The relative sensitivity across a homologous series of fatty acids is observed to change, favoring short- or long-chain fatty acids, depending on the amount of miscible co-solvent added to the donor phase. Further, lithium acetate added online via the acceptor phase was used in tandem mass spectrometry experiments to determine the location of double bonds in polyunsaturated fatty acids (PUFAs). The method was applied to direct measurements and structural determinations for selected PUFAs in salmon tissue samples. Standard addition was employed to quantify the amount of PUFAs in a variety of salmon samples, yielding 0.27-0.42 and 0.40-0.84 w/w % for eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), respectively, for Sockeye and Chinook salmon, in good agreement with the literature. This work presents, to our knowledge, the first use of CP-MIMS for the direct analysis of fatty acids in oily foodstuff samples. Graphical abstract ᅟ.
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Affiliation(s)
- Scott A Borden
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, British Columbia, V9R 5S5, Canada.,Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8P 5C2, Canada
| | - Hannah N Damer
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, British Columbia, V9R 5S5, Canada
| | - Erik T Krogh
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, British Columbia, V9R 5S5, Canada.,Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8P 5C2, Canada
| | - Chris G Gill
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, British Columbia, V9R 5S5, Canada. .,Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8P 5C2, Canada. .,Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada. .,Department of Environmental and Occupational Health Sciences, University of Washington, 1959 NE Pacific Street, Seattle, WA, 98195, USA.
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20
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Duncan KD, Fang R, Yuan J, Chu RK, Dey SK, Burnum-Johnson KE, Lanekoff I. Quantitative Mass Spectrometry Imaging of Prostaglandins as Silver Ion Adducts with Nanospray Desorption Electrospray Ionization. Anal Chem 2018; 90:7246-7252. [PMID: 29676905 DOI: 10.1021/acs.analchem.8b00350] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Prostaglandins (PG) are an important class of lipid biomolecules that are essential in many biological processes, including inflammation and successful pregnancy. Despite a high bioactivity, physiological concentrations are typically low, which makes direct mass spectrometric analysis of endogenous PG species challenging. Consequently, there have not been any studies investigating PG localization to specific morphological regions in tissue sections using mass spectrometry imaging (MSI) techniques. Herein, we show that silver ions, added to the solvent used for nanospray desorption electrospray ionization (nano-DESI) MSI, enhances the ionization of PGs and enables nano-DESI MSI of several species in uterine tissue from day 4 pregnant mice. It was found that detection of [PG + Ag]+ ions increased the sensitivity by ∼30 times, when compared to [PG - H]- ions. Further, the addition of isotopically labeled internal standards enabled generation of quantitative ion images for the detected PG species. Increased sensitivity and quantitative MSI enabled the first proof-of-principle results detailing PG localization in mouse uterus tissue sections. These results show that PG species primarily localized to cellular regions of the luminal epithelium and glandular epithelium in uterine tissue. Further, this study provides a unique scaffold for future studies investigating the PG distribution within biological tissue samples.
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Affiliation(s)
- Kyle D Duncan
- Department of Chemistry-BMC , Uppsala University , SE-751 24 Uppsala , Sweden
| | - Ru Fang
- Department of Chemistry-BMC , Uppsala University , SE-751 24 Uppsala , Sweden
| | - Jia Yuan
- Division of Reproductive Sciences , Cincinnati Children's Hospital Medical Center , Cincinnati , Ohio 45229 , United States
| | - Rosalie K Chu
- Biological Sciences Division , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
| | - Sudhansu K Dey
- Division of Reproductive Sciences , Cincinnati Children's Hospital Medical Center , Cincinnati , Ohio 45229 , United States
| | - Kristin E Burnum-Johnson
- Biological Sciences Division , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
| | - Ingela Lanekoff
- Department of Chemistry-BMC , Uppsala University , SE-751 24 Uppsala , Sweden
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21
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Jiang R, Jiao Y, Zhang P, Liu Y, Wang X, Huang Y, Zhang Z, Xu F. Twin Derivatization Strategy for High-Coverage Quantification of Free Fatty Acids by Liquid Chromatography–Tandem Mass Spectrometry. Anal Chem 2017; 89:12223-12230. [DOI: 10.1021/acs.analchem.7b03020] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ruiqi Jiang
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Yu Jiao
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Pei Zhang
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Yong Liu
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Xu Wang
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Yin Huang
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Zunjian Zhang
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Fengguo Xu
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, ‡State Key Laboratory of Natural Medicine, and §Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
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22
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Christinat N, Morin-Rivron D, Masoodi M. High-Throughput Quantitative Lipidomics Analysis of Nonesterified Fatty Acids in Human Plasma. J Proteome Res 2016; 15:2228-35. [PMID: 27185515 DOI: 10.1021/acs.jproteome.6b00198] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We present a high-throughput, nontargeted lipidomics approach using liquid chromatography coupled to high-resolution mass spectrometry for quantitative analysis of nonesterified fatty acids. We applied this method to screen a wide range of fatty acids from medium-chain to very long-chain (8 to 24 carbon atoms) in human plasma samples. The method enables us to chromatographically separate branched-chain species from their straight-chain isomers as well as separate biologically important ω-3 and ω-6 polyunsaturated fatty acids. We used 51 fatty acid species to demonstrate the quantitative capability of this method with quantification limits in the nanomolar range; however, this method is not limited only to these fatty acid species. High-throughput sample preparation was developed and carried out on a robotic platform that allows extraction of 96 samples simultaneously within 3 h. This high-throughput platform was used to assess the influence of different types of human plasma collection and preparation on the nonesterified fatty acid profile of healthy donors. Use of the anticoagulants EDTA and heparin has been compared with simple clotting, and only limited changes have been detected in most nonesterified fatty acid concentrations.
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Affiliation(s)
- Nicolas Christinat
- Lipid Biology, Department of Gastro-Intestinal Health & Microbiome, Nestlé Institute of Health Sciences, EPFL , Innovation Park, Bâtiment H, 1015 Lausanne, Switzerland
| | - Delphine Morin-Rivron
- Lipid Biology, Department of Gastro-Intestinal Health & Microbiome, Nestlé Institute of Health Sciences, EPFL , Innovation Park, Bâtiment H, 1015 Lausanne, Switzerland
| | - Mojgan Masoodi
- Lipid Biology, Department of Gastro-Intestinal Health & Microbiome, Nestlé Institute of Health Sciences, EPFL , Innovation Park, Bâtiment H, 1015 Lausanne, Switzerland
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23
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Duncan KD, Volmer DA, Gill CG, Krogh ET. Rapid Screening of Carboxylic Acids from Waste and Surface Waters by ESI-MS/MS Using Barium Ion Chemistry and On-Line Membrane Sampling. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:443-450. [PMID: 26689207 DOI: 10.1007/s13361-015-1311-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 11/18/2015] [Accepted: 11/19/2015] [Indexed: 06/05/2023]
Abstract
Negative ion tandem mass spectrometric analysis of aliphatic carboxylic acids often yields only non-diagnostic ([M - H](-)) ions with limited selective fragmentation. However, carboxylates cationized with Ba(2+) have demonstrated efficient dissociation in positive ion mode, providing structurally diagnostic product ions. We report the application of barium adducts followed by collision induced dissociation (CID), to improve selectivity for rapid screening of carboxylic acids in complex aqueous samples. The quantitative MS/MS method presented utilizes common product ions of [M - H + Ba](+) precursor ions. The mechanism of product ion formation is investigated using isotopically labeled standards and a series of structurally related carboxylic acids. The results suggest that hydrogen atoms in the β and γ positions yield common product ions ([BaH](+) and [BaOH](+)). Furthermore, the diagnostic product ion at m/z 196 serves as a qualifying ion for carboxylate species. This methodology has been successfully used in conjunction with condensed phase membrane introduction mass spectrometry (CP-MIMS), with barium acetate added directly to the methanol acceptor phase. The combination enables rapid screening of carboxylic acids directly from acidified water samples (wastewater effluent, spiked natural waters) using a capillary hollow fiber PDMS membrane immersion probe. We have applied this technique for the direct analysis of complex naphthenic acid mixtures spiked into natural surface waters using CP-MIMS. Selectivity at the ionization and tandem mass spectrometry level eliminate isobaric interferences from hydroxylated species present within the samples, which have been observed in negative electrospray ionization.
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Affiliation(s)
- Kyle D Duncan
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, BC, Canada
- Department of Chemistry, University of Victoria, Victoria, BC, Canada
| | - Dietrich A Volmer
- Institute of Bioanalytical Chemistry, Saarland University, Saarbrücken, Germany
| | - Chris G Gill
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, BC, Canada.
- Department of Chemistry, University of Victoria, Victoria, BC, Canada.
| | - Erik T Krogh
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, BC, Canada.
- Department of Chemistry, University of Victoria, Victoria, BC, Canada.
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24
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Mok HJ, Lee JW, Bandu R, Kang HS, Kim KH, Kim KP. A rapid and sensitive profiling of free fatty acids using liquid chromatography electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) after chemical derivatization. RSC Adv 2016. [DOI: 10.1039/c6ra01344a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A mass spectrometry method for the improved identification and quantification of free fatty acids (FFAs) based on derivatization using trimethylsilyldiazomethane (TMSD) was developed and validated to be an sensitive and accurate method for analyzing FFAs.
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Affiliation(s)
- Hyuck Jun Mok
- Department of Applied Chemistry
- The Institute of Natural Science
- College of Applied Science
- Kyung Hee University
- Yongin
| | - Jae Won Lee
- Department of Applied Chemistry
- The Institute of Natural Science
- College of Applied Science
- Kyung Hee University
- Yongin
| | - Raju Bandu
- Department of Applied Chemistry
- The Institute of Natural Science
- College of Applied Science
- Kyung Hee University
- Yongin
| | - Hong Seok Kang
- Department of Pharmacology
- School of Medicine
- Konkuk University
- Seoul 143-701
- Republic of Korea
| | - Kyun-Hwan Kim
- Department of Pharmacology
- School of Medicine
- Konkuk University
- Seoul 143-701
- Republic of Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry
- The Institute of Natural Science
- College of Applied Science
- Kyung Hee University
- Yongin
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25
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Abstract
Sensitive and reliable analysis of endogenous compounds is critically important for many physiological and pathological studies. Methods based on LC–MS have progressed to become the method of choice for analyzing endogenous compounds. However, the analysis can be challenging due to various factors, including inherent low concentrations in biological samples, low ionization efficiency, undesirable chromatographic behavior and interferences of complex biological. The integration of chemical derivatization with LC–MS could enhance its capabilities in sensitivity and selectivity, and extend its application to a wider range of analytes. In this article, we will review the derivatization strategies in the LC–MS analysis of various endogenous compounds, and provide applications highlighting the impact of these important techniques in the evaluation of pathological events.
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26
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Pais de Barros JP, Gautier T, Sali W, Adrie C, Choubley H, Charron E, Lalande C, Le Guern N, Deckert V, Monchi M, Quenot JP, Lagrost L. Quantitative lipopolysaccharide analysis using HPLC/MS/MS and its combination with the limulus amebocyte lysate assay. J Lipid Res 2015; 56:1363-9. [PMID: 26023073 DOI: 10.1194/jlr.d059725] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Indexed: 01/22/2023] Open
Abstract
Quantitation of plasma lipopolysaccharides (LPSs) might be used to document Gram-negative bacterial infection. In the present work, LPS-derived 3-hydroxymyristate was extracted from plasma samples with an organic solvent, separated by reversed phase HPLC, and quantitated by MS/MS. This mass assay was combined with the limulus amebocyte lysate (LAL) bioassay to monitor neutralization of LPS activity in biological samples. The described HPLC/MS/MS method is a reliable, practical, accurate, and sensitive tool to quantitate LPS. The combination of the LAL and HPLC/MS/MS analyses provided new evidence for the intrinsic capacity of plasma lipoproteins and phospholipid transfer protein to neutralize the activity of LPS. In a subset of patients with systemic inflammatory response syndrome, with documented infection but with a negative plasma LAL test, significant amounts of LPS were measured by the HPLC/MS/MS method. Patients with the highest plasma LPS concentration were more severely ill. HPLC/MS/MS is a relevant method to quantitate endotoxin in a sample, to assess the efficacy of LPS neutralization, and to evaluate the proinflammatory potential of LPS in vivo.
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Affiliation(s)
- Jean-Paul Pais de Barros
- INSERM, LNC UMR866, F-21000 Dijon, France LNC UMR866, University Bourgogne Franche-Comté, F-21000 Dijon, France LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Thomas Gautier
- INSERM, LNC UMR866, F-21000 Dijon, France LNC UMR866, University Bourgogne Franche-Comté, F-21000 Dijon, France LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Wahib Sali
- INSERM, LNC UMR866, F-21000 Dijon, France LNC UMR866, University Bourgogne Franche-Comté, F-21000 Dijon, France LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Christophe Adrie
- Physiology Department, Cochin Hospital, Paris University, Paris, France
| | - Hélène Choubley
- LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Emilie Charron
- LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Caroline Lalande
- LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Naig Le Guern
- INSERM, LNC UMR866, F-21000 Dijon, France LNC UMR866, University Bourgogne Franche-Comté, F-21000 Dijon, France LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Valérie Deckert
- INSERM, LNC UMR866, F-21000 Dijon, France LNC UMR866, University Bourgogne Franche-Comté, F-21000 Dijon, France LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France
| | - Mehran Monchi
- Intensive Care Unit, Melun General Hospital, Melun, France
| | - Jean-Pierre Quenot
- INSERM, LNC UMR866, F-21000 Dijon, France LNC UMR866, University Bourgogne Franche-Comté, F-21000 Dijon, France LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France Intensive Care Unit University Hospital of Dijon, F-21000 Dijon, France
| | - Laurent Lagrost
- INSERM, LNC UMR866, F-21000 Dijon, France LNC UMR866, University Bourgogne Franche-Comté, F-21000 Dijon, France LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne-Franche Comté, F-21000 Dijon, France Clinical Research Department, University Hospital of Dijon, F-21000 Dijon, France
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27
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Analysis of biologically-active, endogenous carboxylic acids based on chromatography-mass spectrometry. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.05.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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28
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Zamzow DR, Elias V, Legette LL, Choi J, Stevens JF, Magnusson KR. Xanthohumol improved cognitive flexibility in young mice. Behav Brain Res 2014; 275:1-10. [PMID: 25192637 DOI: 10.1016/j.bbr.2014.08.045] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 08/22/2014] [Accepted: 08/23/2014] [Indexed: 12/19/2022]
Abstract
The protein palmitoylation cycle has been shown to be important for protein signaling and synaptic plasticity. Data from our lab showed a change in the palmitoylation status of certain proteins with age. A greater percentage of the NMDA receptor subunits GluN2A and GluN2B, along with Fyn and PSD95 proteins, were palmitoylated in the old mice. The higher level of protein palmitoylation was also associated with poorer learning scores. Xanthohumol is a prenylated flavonoid that has been shown to increase beta-oxidation in the livers of rodents, decreasing circulating free fatty acids in the serum. What is not known is whether the application of xanthohumol could influence the palmitoylation status of proteins. In this study, young and old mice were fed a diet supplemented with xanthohumol for 8 weeks. Spatial memory was assessed with the Morris water maze and protein palmitoylation quantified. The young xanthohumol-treated mice showed a significant improvement in cognitive flexibility. However, this appeared to be associated with the young control mice, on a defined, phytoestrogen-deficient diet, performing as poorly as the old mice and xanthohumol reversing this effect. The old mice receiving xanthohumol did not significantly improve their learning scores. Xanthohumol treatment was unable to affect the palmitoylation of NMDA receptor subunits and associated proteins assessed in this study. This evidence suggests that xanthohumol may play a role in improving cognitive flexability in young animals, but it appears to be ineffective in adjusting the palmitoylation status of neuronal proteins in aged individuals.
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Affiliation(s)
- Daniel R Zamzow
- Molecular and Cellular Biology Program, Oregon State University, Corvallis, OR 97331, USA; Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331, USA; Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - Valerie Elias
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331, USA; Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - LeeCole L Legette
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - Jaewoo Choi
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - J Fred Stevens
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - Kathy R Magnusson
- Molecular and Cellular Biology Program, Oregon State University, Corvallis, OR 97331, USA; Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331, USA; Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
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29
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Thomas MC, Kirk BB, Altvater J, Blanksby SJ, Nette GW. Formation and fragmentation of unsaturated fatty acid [M - 2H + Na]- ions: stabilized carbanions for charge-directed fragmentation. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:237-247. [PMID: 24338213 DOI: 10.1007/s13361-013-0760-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 09/20/2013] [Accepted: 09/24/2013] [Indexed: 06/03/2023]
Abstract
Fatty acids are long-chain carboxylic acids that readily produce [M - H](-) ions upon negative ion electrospray ionization (ESI) and cationic complexes with alkali, alkaline earth, and transition metals in positive ion ESI. In contrast, only one anionic monomeric fatty acid-metal ion complex has been reported in the literature, namely [M - 2H + Fe(II)Cl](-). In this manuscript, we present two methods to form anionic unsaturated fatty acid-sodium ion complexes (i.e., [M - 2H + Na](-)). We find that these ions may be generated efficiently by two distinct methods: (1) negative ion ESI of a methanolic solution containing the fatty acid and sodium fluoride forming an [M - H + NaF](-) ion. Subsequent collision-induced dissociation (CID) results in the desired [M - 2H + Na](-) ion via the neutral loss of HF. (2) Direct formation of the [M - 2H + Na](-) ion by negative ion ESI of a methanolic solution containing the fatty acid and sodium hydroxide or bicarbonate. In addition to deprotonation of the carboxylic acid moiety, formation of [M - 2H + Na](-) ions requires the removal of a proton from the fatty acid acyl chain. We propose that this deprotonation occurs at the bis-allylic position(s) of polyunsaturated fatty acids resulting in the formation of a resonance-stabilized carbanion. This proposal is supported by ab initio calculations, which reveal that removal of a proton from the bis-allylic position, followed by neutral loss of HX (where X = F(-) and (-)OH), is the lowest energy dissociation pathway.
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Affiliation(s)
- Michael C Thomas
- Independent Marine Biochemistry Research, Moreton Bay Research Station, Dunwich, Qld, 4183, Australia,
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30
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Bollinger JG, Naika GS, Rohan G, Sadilek M, Gelb MH. LC/ESI-MS/MS detection of FAs by charge reversal derivatization with more than four orders of magnitude improvement in sensitivity. J Lipid Res 2013; 54:3523-30. [PMID: 23945566 DOI: 10.1194/jlr.d040782] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Quantitative analysis of fatty acids (FAs) is an important area of analytical biochemistry. Ultra high sensitivity FA analysis usually is done with gas chromatography of pentafluorobenzyl esters coupled to an electron-capture detector. With the popularity of electrospray ionization (ESI) mass spectrometers coupled to liquid chromatography, it would be convenient to develop a method for ultra high sensitivity FA detection using this equipment. Although FAs can be analyzed by ESI in negative ion mode, this method is not very sensitive. In this study, we demonstrate a new method of FA analysis based on conversion of the carboxylic acid to an amide bearing a permanent positive charge, N-(4-aminomethylphenyl)pyridinium (AMPP) combined with analysis on a reverse-phase liquid chromatography column coupled to an ESI mass spectrometer operating in positive ion mode. This leads to an ∼60,000-fold increase in sensitivity compared with the same method carried out with underivatized FAs. The new method is about 10-fold more sensitive than the existing method of gas chromatography/electron-capture mass spectrometry of FA pentafluorobenzyl esters. Furthermore, significant fragmentation of the precursor ions in the nontag portion improves analytical specificity. We show that a large number of FA molecular species can be analyzed with this method in complex biological samples such as mouse serum.
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Affiliation(s)
- James G Bollinger
- Departments of Chemistry and University of Washington, Seattle, WA 98195
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31
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Chu BS, Nagy K. Enrichment and quantification of monoacylglycerols and free fatty acids by solid phase extraction and liquid chromatography–mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 932:50-8. [DOI: 10.1016/j.jchromb.2013.05.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Revised: 05/20/2013] [Accepted: 05/24/2013] [Indexed: 11/28/2022]
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32
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Mochizuki Y, Inagaki S, Suzuki M, Min JZ, Inoue K, Todoroki K, Toyo'oka T. A novel derivatization reagent possessing a bromoquinolinium structure for biological carboxylic acids in HPLC-ESI-MS/MS. J Sep Sci 2013; 36:1883-9. [DOI: 10.1002/jssc.201300083] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/25/2013] [Accepted: 03/27/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Yuko Mochizuki
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences, University of Shizuoka; Suruga-ku Shizuoka Japan
| | - Shinsuke Inagaki
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences, University of Shizuoka; Suruga-ku Shizuoka Japan
| | - Mayu Suzuki
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences, University of Shizuoka; Suruga-ku Shizuoka Japan
| | - Jun Zhe Min
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences, University of Shizuoka; Suruga-ku Shizuoka Japan
| | - Koichi Inoue
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences, University of Shizuoka; Suruga-ku Shizuoka Japan
| | - Kenichiro Todoroki
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences, University of Shizuoka; Suruga-ku Shizuoka Japan
| | - Toshimasa Toyo'oka
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences, University of Shizuoka; Suruga-ku Shizuoka Japan
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33
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Xu W, Zhang L, Huang Y, Yang Q, Xiao H, Zhang D. Urinary Fatty Acid Composition and Biomarkers Discovery for Type 2 Diabetic Patients Based on Ultra-Performance Liquid Chromatography-Quadrupole/Time of Flight Mass Spectrometry and Multivariate Statistical Analysis. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.702180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Analysis of Triacylglycerols and Free Fatty Acids in Algae Using Ultra-Performance Liquid Chromatography Mass Spectrometry. J AM OIL CHEM SOC 2012. [DOI: 10.1007/s11746-012-2138-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Thomas MC, Dunn SR, Altvater J, Dove SG, Nette GW. Rapid Identification of Long-Chain Polyunsaturated Fatty Acids in a Marine Extract by HPLC-MS Using Data-Dependent Acquisition. Anal Chem 2012; 84:5976-83. [DOI: 10.1021/ac3006523] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael C. Thomas
- Independent
Marine Biochemical
Research, Moreton Bay Research Station,
Dunwich Qld 4183, Australia
- ARC Centre for Excellence in
Coral Reef Studies, School of Biological Sciences, University of Queensland, St. Lucia Qld 4072, Australia
| | - Simon R. Dunn
- ARC Centre for Excellence in
Coral Reef Studies, School of Biological Sciences, University of Queensland, St. Lucia Qld 4072, Australia
| | - Jens Altvater
- Independent
Marine Biochemical
Research, Moreton Bay Research Station,
Dunwich Qld 4183, Australia
| | - Sophie G. Dove
- ARC Centre for Excellence in
Coral Reef Studies, School of Biological Sciences, University of Queensland, St. Lucia Qld 4072, Australia
| | - Geoffrey W. Nette
- Independent
Marine Biochemical
Research, Moreton Bay Research Station,
Dunwich Qld 4183, Australia
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36
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Li GL, Chen G, Liu YQ, Jing NH, You JM. A sensitive and selective HPLC-FLD method with fluorescent labeling for simultaneous detection of bile acid and free fatty acid in human serum. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 895-896:191-5. [DOI: 10.1016/j.jchromb.2012.03.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2011] [Revised: 03/12/2012] [Accepted: 03/16/2012] [Indexed: 11/24/2022]
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37
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Hellmuth C, Weber M, Koletzko B, Peissner W. Nonesterified fatty acid determination for functional lipidomics: comprehensive ultrahigh performance liquid chromatography-tandem mass spectrometry quantitation, qualification, and parameter prediction. Anal Chem 2012; 84:1483-90. [PMID: 22224852 DOI: 10.1021/ac202602u] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Despite their central importance for lipid metabolism, straightforward quantitative methods for determination of nonesterified fatty acid (NEFA) species are still missing. The protocol presented here provides unbiased quantitation of plasma NEFA species by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Simple deproteination of plasma in organic solvent solution yields high accuracy, including both the unbound and initially protein-bound fractions, while avoiding interferences from hydrolysis of esterified fatty acids from other lipid classes. Sample preparation is fast and nonexpensive, hence well suited for automation and high-throughput applications. Separation of isotopologic NEFA is achieved using ultrahigh-performance liquid chromatography (UPLC) coupled to triple quadrupole LC-MS/MS detection. In combination with automated liquid handling, total assay time per sample is less than 15 min. The analytical spectrum extends beyond readily available NEFA standard compounds by a regression model predicting all the relevant analytical parameters (retention time, ion path settings, and response factor) of NEFA species based on chain length and number of double bonds. Detection of 50 NEFA species and accurate quantification of 36 NEFA species in human plasma is described, the highest numbers ever reported for a LC-MS application. Accuracy and precision are within widely accepted limits. The use of qualifier ions supports unequivocal analyte verification.
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Affiliation(s)
- Christian Hellmuth
- Division of Metabolic and Nutritional Medicine, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich, 80337 Munich, Germany
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38
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Regulation of the expression of key genes involved in HDL metabolism by unsaturated fatty acids. Br J Nutr 2012; 108:1351-9. [PMID: 22221450 DOI: 10.1017/s0007114511006854] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The cardioprotective effects of HDL have been largely attributed to their role in the reverse cholesterol transport pathway, whose efficiency is affected by many proteins involved in the formation and remodelling of HDL. The aim of the present study was to determine the effects, and possible mechanisms of action, of unsaturated fatty acids on the expression of genes involved in HDL metabolism in HepG2 cells. The mRNA concentration of target genes was assessed by real-time PCR. Protein concentrations were determined by Western blot or immunoassays. PPAR and liver X receptor (LXR) activities were assessed in transfection experiments. Compared with the SFA palmitic acid (PA), the PUFA arachidonic acid (AA), EPA and DHA significantly decreased apoA-I, ATP-binding cassette A1 (ABCA1), lecithin-cholesterol acyltransferase (LCAT) and phospholipid transfer protein mRNA levels. EPA and DHA significantly lowered the protein concentration of apoA-I and LCAT in the media, as well as the cellular ABCA1 protein content. In addition, DHA repressed the apoA-I promoter activity. AA lowered only the protein concentration of LCAT in the media. The activity of PPAR was increased by DHA, while the activity of LXR was lowered by both DHA and AA, relative to PA. The regulation of these transcription factors by PUFA may explain some of the PUFA effects on gene expression. The observed n-3 PUFA-mediated changes in gene expression are predicted to reduce the rate of HDL particle formation and maturation.
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39
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Feng GM, Chen JH, Lin CI, Yang JM. Effect of docosahexaenoic acid on hypoxia/reoxygenation injury in human coronary arterial smooth muscle cells. Eur J Nutr 2011; 51:987-95. [DOI: 10.1007/s00394-011-0278-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 11/07/2011] [Indexed: 12/18/2022]
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Trufelli H, Famiglini G, Termopoli V, Cappiello A. Profiling of non-esterified fatty acids in human plasma using liquid chromatography-electron ionization mass spectrometry. Anal Bioanal Chem 2011; 400:2933-41. [DOI: 10.1007/s00216-011-4955-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 03/22/2011] [Accepted: 03/23/2011] [Indexed: 12/01/2022]
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Bowen CL, Kehler J, Evans CA. Development and validation of a sensitive and selective UHPLC–MS/MS method for simultaneous determination of both free and total eicosapentaeonic acid and docosahexenoic acid in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:3125-33. [DOI: 10.1016/j.jchromb.2010.09.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 09/14/2010] [Accepted: 09/17/2010] [Indexed: 11/15/2022]
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Salm P, Taylor PJ, Kostner K. Simultaneous quantification of total eicosapentaenoic acid, docosahexaenoic acid and arachidonic acid in plasma by high-performance liquid chromatography-tandem mass spectrometry. Biomed Chromatogr 2010; 25:652-9. [DOI: 10.1002/bmc.1496] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2010] [Revised: 05/29/2010] [Accepted: 06/02/2010] [Indexed: 11/08/2022]
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Spitsmeister M, Adamberg K, Vilu R. UPLC/MS based method for quantitative determination of fatty acid composition in Gram-negative and Gram-positive bacteria. J Microbiol Methods 2010; 82:288-95. [PMID: 20621131 DOI: 10.1016/j.mimet.2010.07.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 07/02/2010] [Accepted: 07/02/2010] [Indexed: 10/19/2022]
Abstract
Quantitative fatty acid composition of microorganisms at various growth space points is required for understanding membrane associated processes of cells, but the majority of the relevant publications still restrict to the relative compositions. In the current study, a simple and reliable method for quantitative measurement of fatty acid content in bacterial biomass without prior derivatization using ultra performance liquid chromatography-electrospray ionization mass spectrometry was developed. The method was applied for investigating the influence of specific growth rate and pH on the fatty acid profiles of two biotechnologically important microorganisms - Gram-negative bacteria Escherichia coli and Gram-positive bacteria Lactococcus lactis grown in controlled physiological states. It was found that the membranes of slowly growing cells are more rigid and that the fatty acid fraction of the cells of L. lactis diminishes considerably with increasing growth rate.
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Affiliation(s)
- Merli Spitsmeister
- Competence Centre of Food and Fermentation Technologies, Akadeemia tee 15, 12618, Tallinn, Estonia
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Koulman A, Petras D, Narayana VK, Wang L, Volmer DA. Comparative high-speed profiling of carboxylic acid metabolite levels by differential isotope-coded MALDI mass spectrometry. Anal Chem 2009; 81:7544-51. [PMID: 19702295 DOI: 10.1021/ac900562j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This present work describes the development of a novel high throughput comparative matrix-assisted laser desorption ionization (MALDI) mass spectrometry profiling technique for endogenous compounds using a new isotope-coded label for relative quantitation of carboxylic acids. The key new aspect of this technique was a differential label, 3-hydroxymethyl-1-ethylpyrididinium iodide (HMEP), designed specifically for simultaneous quantitative MALDI analysis of two physiological states. The HMEP-d(0) and HMEP-d(5) variants of the label were applied to profiling endogenous fatty acid levels during a fish oil intervention study, using the metabolite profile of every individual person in the study as their own personal analytical reference standard. Initially, analytical figures of merit such as sensitivity, linear dynamic range, limit of quantitation, and precision were determined from the comparative quantitation experiments. Importantly, the permanently charged HMEP mass tag not only increased the ionization efficiency of the studied fatty acids but also ensured that the solution phase properties of the analytes became more similar, allowing the use of CHCA as a single MALDI matrix compound for the entire range of analytes. The label exhibited a further very unique feature; it provided complete suppression of MALDI matrix-related ions. The MALDI assay was able to generate the data much faster than conventional gas chromatography (GC) methods for fatty acids. It is shown in this study that analyzing a single sample took less than 10 s with analytical results of comparable quality to those obtained by GC.
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Affiliation(s)
- Albert Koulman
- Medical Research Council, Elsie Widdowson Laboratory, Cambridge, United Kingdom
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Quantitative LC-ESI-MS/MS metabolic profiling method for fatty acids and lipophilic metabolites in fermentation broths from β-lactam antibiotics production. Anal Bioanal Chem 2009; 397:147-160. [DOI: 10.1007/s00216-009-3340-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Revised: 11/20/2009] [Accepted: 11/22/2009] [Indexed: 10/20/2022]
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46
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Pavlovski CJ. Screening for essential fatty acid deficiency in at risk infants. Med Hypotheses 2009; 73:910-6. [DOI: 10.1016/j.mehy.2009.06.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Accepted: 06/28/2009] [Indexed: 11/17/2022]
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Chu X, Zhao T, Zhang Y, Zhao A, Zhou M, Zheng X, Dan M, Jia W. Determination of 13 Free Fatty Acids in Pheretima Using Ultra-Performance LC-ESI-MS. Chromatographia 2009. [DOI: 10.1365/s10337-009-0962-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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