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Qin W, Escher BI, Huchthausen J, Fu Q, Henneberger L. Species Difference? Bovine, Trout, and Human Plasma Protein Binding of Per- and Polyfluoroalkyl Substances. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:9954-9966. [PMID: 38804966 PMCID: PMC11171458 DOI: 10.1021/acs.est.3c10824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 05/03/2024] [Accepted: 05/14/2024] [Indexed: 05/29/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) strongly bind to proteins and lipids in blood, which govern their accumulation and distribution in organisms. Understanding the plasma binding mechanism and species differences will facilitate the quantitative in vitro-to-in vivo extrapolation and improve risk assessment of PFAS. We studied the binding mechanism of 16 PFAS to bovine serum albumin (BSA), trout, and human plasma using solid-phase microextraction. Binding of anionic PFAS to BSA and human plasma was found to be highly concentration-dependent, while trout plasma binding was linear for the majority of the tested PFAS. At a molar ratio of PFAS to protein ν < 0.1 molPFAS/molprotein, the specific protein binding of anionic PFAS dominated their human plasma binding. This would be the scenario for physiological conditions (ν < 0.01), whereas in in vitro assays, PFAS are often dosed in excess (ν > 1) and nonspecific binding becomes dominant. BSA was shown to serve as a good surrogate for human plasma. As trout plasma contains more lipids, the nonspecific binding to lipids affected the affinities of PFAS for trout plasma. Mass balance models that are parameterized with the protein-water and lipid-water partitioning constants (chemical characteristics), as well as the protein and lipid contents of the plasma (species characteristics), were successfully used to predict the binding to human and trout plasma.
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Affiliation(s)
- Weiping Qin
- Department
of Cell Toxicology, UFZ—Helmholtz
Centre for Environmental Research, 04318 Leipzig, Germany
- Environmental
Toxicology, Department of Geosciences, Eberhard
Karls University Tübingen, Schnarrenbergstr. 94-96, DE-72076 Tübingen, Germany
| | - Beate I. Escher
- Department
of Cell Toxicology, UFZ—Helmholtz
Centre for Environmental Research, 04318 Leipzig, Germany
- Environmental
Toxicology, Department of Geosciences, Eberhard
Karls University Tübingen, Schnarrenbergstr. 94-96, DE-72076 Tübingen, Germany
| | - Julia Huchthausen
- Department
of Cell Toxicology, UFZ—Helmholtz
Centre for Environmental Research, 04318 Leipzig, Germany
- Environmental
Toxicology, Department of Geosciences, Eberhard
Karls University Tübingen, Schnarrenbergstr. 94-96, DE-72076 Tübingen, Germany
| | - Qiuguo Fu
- Department
of Environmental Analytical Chemistry, UFZ—Helmholtz
Centre for Environmental Research, 04318 Leipzig, Germany
| | - Luise Henneberger
- Department
of Cell Toxicology, UFZ—Helmholtz
Centre for Environmental Research, 04318 Leipzig, Germany
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Setayeshnasab M, Sabzalian MR, Rahimmalek M. The relation between apomictic seed production and morpho-physiological characteristics in a world collection of castor bean (Ricinus communis L.). Sci Rep 2024; 14:5013. [PMID: 38424457 PMCID: PMC10904805 DOI: 10.1038/s41598-024-53700-1] [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: 08/24/2023] [Accepted: 02/03/2024] [Indexed: 03/02/2024] Open
Abstract
Ricinus communis is one of the most important oilseed plants with many medicinal and industrial applications. Variation in 30 genotypes of castor bean collected from different regions of the world was evaluated for two consecutive years and the difference in seed production with two different reproductive modes (including apomixis and open-pollination) was compared based on yield components, agronomic traits, and phytochemical properties. Results of data analysis demonstrated that castor bean has the ability for a wide range of apomixis for seed production and the highest percentages of apomixis ability in the first and second years were 86.3% and 92.31%, respectively. Apomixis ability had a high positive correlation with yield components, seed oil content, and the amount of leaf rutin. Two genotypes from Brazil and Syria revealed the highest phenolic content in the first and second years, respectively. In addition, the Afghanistan genotype in two modes of apomixis and open-pollination in the first year and the Syria and Yazd genotypes in apomixis and open-pollination modes, respectively, in the second year showed the highest content of seed fatty acids. It is possible to maintain superior genotypes of castor bean in terms of phytochemical traits, yield, and oil quality through apomixis reproduction.
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Affiliation(s)
- Maedeh Setayeshnasab
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran
| | - Mohammad R Sabzalian
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran.
| | - Mehdi Rahimmalek
- Department of Horticulture, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran
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3
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Kuiack RC, Tuffs SW, Dufresne K, Flick R, McCormick JK, McGavin MJ. The fadXDEBA locus of Staphylococcus aureus is required for metabolism of exogenous palmitic acid and in vivo growth. Mol Microbiol 2023; 120:425-438. [PMID: 37501506 DOI: 10.1111/mmi.15131] [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: 01/20/2023] [Revised: 07/05/2023] [Accepted: 07/10/2023] [Indexed: 07/29/2023]
Abstract
In Staphylococcus aureus, genes that should confer the capacity to metabolize fatty acids by β-oxidation occur in the fadXDEBA locus, but their function has not been elucidated. Previously, incorporation into phospholipid through the fatty acid kinase FakA pathway was thought to be the only option available for S. aureus to metabolize exogenous saturated fatty acids. We now find that in S. aureus USA300, a fadX::lux reporter was repressed by glucose and induced by palmitic acid but not stearic acid, while in USA300ΔfakA basal expression was significantly elevated, and enhanced in response to both fatty acids. When cultures were supplemented with palmitic acid, palmitoyl-CoA representing the first metabolite in the β-oxidation pathway was detected in USA300, but not in a fadXDEBA deletion mutant USA300Δfad, which relative to USA300 exhibited increased incorporation of palmitic acid into phospholipid accompanied by a rapid loss of viability. USA300Δfad also exhibited significantly reduced viability in a murine tissue abscess infection model. Our data are consistent with FakA-mediated incorporation of fatty acids into phospholipid as a preferred pathway for metabolism of exogenous fatty acids, while the fad locus is critical for metabolism of palmitic acid, which is the most abundant free fatty acid in human plasma.
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Affiliation(s)
- Robert C Kuiack
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
| | - Stephen W Tuffs
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
| | - Karine Dufresne
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
| | - Robert Flick
- Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - John K McCormick
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
- Lawson Health Research Institute, London, Ontario, Canada
- Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Martin J McGavin
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
- Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
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Can individual fatty acids be used as functional biomarkers of dairy fat consumption in relation to cardiometabolic health? A narrative review. Br J Nutr 2022; 128:2373-2386. [PMID: 35086579 PMCID: PMC9723489 DOI: 10.1017/s0007114522000289] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In epidemiological studies, dairy food consumption has been associated with minimal effect or decreased risk of some cardiometabolic diseases (CMD). However, current methods of dietary assessment do not provide objective and accurate measures of food intakes. Thus, the identification of valid and reliable biomarkers of dairy product intake is an important challenge to best determine the relationship between dairy consumption and health status. This review investigated potential biomarkers of dairy fat consumption, such as odd-chain, trans- and branched-chain fatty acids (FA), which may improve the assessment of full-fat dairy product consumption. Overall, the current use of serum/plasma FA as biomarkers of dairy fat consumption is mostly based on observational evidence, with a lack of well-controlled, dose-response intervention studies to accurately assess the strength of the relationship. Circulating odd-chain SFA and trans-palmitoleic acid are increasingly studied in relation to CMD risk and seem to be consistently associated with a reduced risk of type 2 diabetes in prospective cohort studies. However, associations with CVD are less clear. Overall, adding less studied FA such as vaccenic and phytanic acids to the current available evidence may provide a more complete assessment of dairy fat intake and minimise potential confounding from endogenous synthesis. Finally, the current evidence base on the direct effect of dairy fatty acids on established biomarkers of CMD risk (e.g. fasting lipid profiles and markers of glycaemic control) mostly derives from cross-sectional, animal and in vitro studies and should be strengthened by well-controlled human intervention studies.
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Sa M, Park MG, Lee CJ. Role of Hypothalamic Reactive Astrocytes in Diet-Induced Obesity. Mol Cells 2022; 45:65-75. [PMID: 35236781 PMCID: PMC8907000 DOI: 10.14348/molcells.2022.2044] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/07/2022] [Accepted: 01/12/2022] [Indexed: 11/30/2022] Open
Abstract
Hypothalamus is a brain region that controls food intake and energy expenditure while sensing signals that convey information about energy status. Within the hypothalamus, molecularly and functionally distinct neurons work in concert under physiological conditions. However, under pathological conditions such as in diet-induced obesity (DIO) model, these neurons show dysfunctional firing patterns and distorted regulation by neurotransmitters and neurohormones. Concurrently, resident glial cells including astrocytes dramatically transform into reactive states. In particular, it has been reported that reactive astrogliosis is observed in the hypothalamus, along with various neuroinflammatory signals. However, how the reactive astrocytes control and modulate DIO by influencing neighboring neurons is not well understood. Recently, new lines of evidence have emerged indicating that these reactive astrocytes directly contribute to the pathology of obesity by synthesizing and tonically releasing the major inhibitory transmitter GABA. The released GABA strongly inhibits the neighboring neurons that control energy expenditure. These surprising findings shed light on the interplay between reactive astrocytes and neighboring neurons in the hypothalamus. This review summarizes recent discoveries related to the functions of hypothalamic reactive astrocytes in obesity and raises new potential therapeutic targets against obesity.
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Affiliation(s)
- Moonsun Sa
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - Mingu Gordon Park
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - C. Justin Lee
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon 34126, Korea
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Gries P, Rathore AS, Lu X, Chiou J, Huynh YB, Lodi A, Tiziani S. Automated Trimethyl Sulfonium Hydroxide Derivatization Method for High-Throughput Fatty Acid Profiling by Gas Chromatography-Mass Spectrometry. Molecules 2021; 26:molecules26206246. [PMID: 34684827 PMCID: PMC8538735 DOI: 10.3390/molecules26206246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/12/2021] [Accepted: 10/12/2021] [Indexed: 11/16/2022] Open
Abstract
Fatty acid profiling on gas chromatography–mass spectrometry (GC–MS) platforms is typically performed offline by manually derivatizing and analyzing small batches of samples. A GC–MS system with a fully integrated robotic autosampler can significantly improve sample handling, standardize data collection, and reduce the total hands-on time required for sample analysis. In this study, we report an optimized high-throughput GC–MS-based methodology that utilizes trimethyl sulfonium hydroxide (TMSH) as a derivatization reagent to convert fatty acids into fatty acid methyl esters. An automated online derivatization method was developed, in which the robotic autosampler derivatizes each sample individually and injects it into the GC–MS system in a high-throughput manner. This study investigated the robustness of automated TMSH derivatization by comparing fatty acid standards and lipid extracts, derivatized manually in batches and online automatically from four biological matrices. Automated derivatization improved reproducibility in 19 of 33 fatty acid standards, with nearly half of the 33 confirmed fatty acids in biological samples demonstrating improved reproducibility when compared to manually derivatized samples. In summary, we show that the online TMSH-based derivatization methodology is ideal for high-throughput fatty acid analysis, allowing rapid and efficient fatty acid profiling, with reduced sample handling, faster data acquisition, and, ultimately, improved data reproducibility.
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Affiliation(s)
- Paul Gries
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA; (P.G.); (A.S.R.); (X.L.); (J.C.); (Y.B.H.); (A.L.)
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Atul Singh Rathore
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA; (P.G.); (A.S.R.); (X.L.); (J.C.); (Y.B.H.); (A.L.)
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Xiyuan Lu
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA; (P.G.); (A.S.R.); (X.L.); (J.C.); (Y.B.H.); (A.L.)
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Jennifer Chiou
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA; (P.G.); (A.S.R.); (X.L.); (J.C.); (Y.B.H.); (A.L.)
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Yen Bao Huynh
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA; (P.G.); (A.S.R.); (X.L.); (J.C.); (Y.B.H.); (A.L.)
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Alessia Lodi
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA; (P.G.); (A.S.R.); (X.L.); (J.C.); (Y.B.H.); (A.L.)
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Stefano Tiziani
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA; (P.G.); (A.S.R.); (X.L.); (J.C.); (Y.B.H.); (A.L.)
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
- Department of Oncology, Dell Medical School, LiveSTRONG Cancer Institutes, The University of Texas at Austin, Austin, TX 78723, USA
- Correspondence: ; Tel.: +1-512-495-4706
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7
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Whalin JG, Liu L, Rankin SA, Zhang W, Richards MP. Color stability and lipid oxidation in pork sausage as affected by rosemary extract and phospholipase A
2
: A possible role for depletion of neutral lipid hydroperoxides. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- James G. Whalin
- Department of Animal and Dairy Science, Meat Science and Animal Biologics Discovery Program University of Wisconsin‐Madison Madison Wisconsin USA
| | - Ling Liu
- Department of Animal and Dairy Science, Meat Science and Animal Biologics Discovery Program University of Wisconsin‐Madison Madison Wisconsin USA
| | - Scott A. Rankin
- Department of Food Science University of Wisconsin‐Madison Madison Wisconsin USA
| | - Wenjing Zhang
- Department of Animal and Dairy Science, Meat Science and Animal Biologics Discovery Program University of Wisconsin‐Madison Madison Wisconsin USA
| | - Mark P. Richards
- Department of Animal and Dairy Science, Meat Science and Animal Biologics Discovery Program University of Wisconsin‐Madison Madison Wisconsin USA
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8
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Ichihara K, Kohsaka C, Tomari N, Yamamoto Y, Masumura T. Determination of free fatty acids in plasma by gas chromatography. Anal Biochem 2020; 603:113810. [PMID: 32511966 DOI: 10.1016/j.ab.2020.113810] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/28/2020] [Accepted: 05/31/2020] [Indexed: 11/26/2022]
Abstract
A method was developed for determination of free fatty acids (FFAs) in plasma by gas chromatography. Plasma was extracted with 3 vol of methanol. Most cholesterol esters and triacylglycerols did not dissolve in the aqueous methanol. FFAs in the crude lipid solution were directly and selectively methylated with (trimethylsilyl)diazomethane at room temperature. Fatty acid methyl esters (FAMEs) formed were extracted with hexane, and nonreactive phospholipids were washed out with 95% methanol. The partially purified FAME preparation was analyzed by gas chromatography. The composition and amount of plasma FFAs closely approximated those obtained using two different methods.
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Affiliation(s)
- Ken'ichi Ichihara
- Kyoto Integrated Science & Technology Bio-Analysis Center, Kyoto Municipal Institute of Industrial Technology and Culture, 134 Cyudoji-Minamicho, Kyoto, 600-8813, Japan.
| | - Chihiro Kohsaka
- Kyoto Integrated Science & Technology Bio-Analysis Center, Kyoto Municipal Institute of Industrial Technology and Culture, 134 Cyudoji-Minamicho, Kyoto, 600-8813, Japan
| | - Naohiro Tomari
- Kyoto Integrated Science & Technology Bio-Analysis Center, Kyoto Municipal Institute of Industrial Technology and Culture, 134 Cyudoji-Minamicho, Kyoto, 600-8813, Japan
| | - Yoshihiro Yamamoto
- Kyoto Integrated Science & Technology Bio-Analysis Center, Kyoto Municipal Institute of Industrial Technology and Culture, 134 Cyudoji-Minamicho, Kyoto, 600-8813, Japan
| | - Takehiro Masumura
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo, Kyoto, 606-8522, Japan
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9
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Bass VL, Soukup JM, Ghio AJ, Madden MC. Oleic acid and derivatives affect human endothelial cell mitochondrial function and vasoactive mediator production. Lipids Health Dis 2020; 19:128. [PMID: 32505182 PMCID: PMC7275404 DOI: 10.1186/s12944-020-01296-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 05/21/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Inhalation of common air pollutants such as diesel and biodiesel combustion products can induce vascular changes in humans which may contribute to increased mortality and morbidity associated with fine particulate matter exposures. Diesel, biodiesel, and other combustion byproducts contain fatty acid components capable of entering the body through particulate matter inhalation. Fatty acids can also be endogenously released into circulation following a systemic stress response to some inhaled pollutants such as ozone. When in the circulation, bioactive fatty acids may interact with cells lining the blood vessels, potentially inducing endothelial dysfunction. To examine whether fatty acids could potentially be involved in human vascular responses to air pollutants, we determined the effects of fatty acids and derivatives on important vascular cell functions. METHODS Human umbilical vein endothelial cells (HUVEC) were exposed in vitro to oleic acid (OA) or OA metabolites for 4-48 h. Cytotoxicity, vasodilator production (by ELISA measurement), mitochondrial function (using Sea Horse assays), and iron metabolism (inferred by ICP-OES measurements) were examined, with standard statistical testing (ANOVA, t-tests) employed. RESULTS Dose-dependent cytotoxicity was noted at 24 h, with 12-hydroxy OA more potent than OA. Mitochondrial stress testing showed that 12-hydroxy OA and OA induce mitochondrial dysfunction. Analysis of soluble mediator release from HUVEC showed a dose-dependent increase in prostaglandin F2α, a lipid involved in control of vascular tone, at 24 h (85% above controls) after OA-BSA exposure. RT-PCR analysis revealed OA did not induce changes in gene expression at noncytotoxic concentrations in exposed HUVEC, but 12-OH OA did alter ICAM and COX2 gene expression. CONCLUSIONS Together, these data demonstrate that FA may be capable of inducing cytotoxic effects and altering expression of mediators of vascular function following inhalation exposure, and may be implicated in air pollutant-induced deaths and hospitalizations. (267 of max 350 words).
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Affiliation(s)
- Virginia L Bass
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, 27514, North Carolina, USA
- Current Affiliation: RAI Services Company, Winston-Salem, NC, USA
| | - Joleen M Soukup
- Clinical Research Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, ORD, U.S. Environmental Protection Agency, 104 Mason Farm Rd, Chapel Hill, NC, 27514, USA
| | - Andrew J Ghio
- Clinical Research Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, ORD, U.S. Environmental Protection Agency, 104 Mason Farm Rd, Chapel Hill, NC, 27514, USA
| | - Michael C Madden
- Clinical Research Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, ORD, U.S. Environmental Protection Agency, 104 Mason Farm Rd, Chapel Hill, NC, 27514, USA.
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10
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Rapid and miniaturized qualitative and quantitative gas chromatography profiling of human blood total fatty acids. Anal Bioanal Chem 2020; 412:2327-2337. [DOI: 10.1007/s00216-020-02424-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/13/2019] [Accepted: 01/15/2020] [Indexed: 02/06/2023]
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11
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Manca A, Alladio E, Casalini V, Puccinelli MP, Massarenti P, Pazzi M, Aprile S, De Francesco A, Mengozzi G, D'Avolio A. Novel "Matrix-Corrected Calibration" study for the detection of polyunsaturated fatty acids (PUFAs) in plasma and erythrocytes by means of a gas chromatography-mass spectrometry approach optimized to follow up long-term parental patients. J Pharm Biomed Anal 2019; 176:112764. [PMID: 31401460 DOI: 10.1016/j.jpba.2019.07.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 07/03/2019] [Accepted: 07/06/2019] [Indexed: 01/23/2023]
Abstract
An accurate and specific gas chromatography-mass spectrometry (GC-MS) method was optimized to quantify specific polyunsaturated fatty acids (PUFAs) in plasma and in erythrocyte membranes for clinical purposes. The developed and fully-validated method showed optimal linearity in addition to adequate results in terms of accuracy, intra-day and inter-day precision. By adopting the Matrix-Corrected Calibration approach on all the biological matrices tested, both the constant and the proportional errors of the developed analytical methodology were considered to assure that the method was not affected by matrix bias. Moreover, a pilot study involving patients in parental nutrition with two different compositions of the administered fat emulsion was performed. The comparison of results obtained in these patients with a group of healthy subjects (i.e. control population) showed significant differences in the collected values of PUFAs in both plasma and erythrocyte membranes, thus providing evidence that the described GC-MS method could be employed as a simple tool for fast and accurate PUFAs analysis aimed at optimizing parenteral nutrition protocols.
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Affiliation(s)
- Alessandra Manca
- SC di Biochimica Clinica, Città della Salute e della Scienza, Corso Bramante 88, Torino 10126, Italy; Laboratorio di Farmacologia Clinica e Farmacogenetica, Dipartimento di Scienze Mediche, Clinica delle Malattie Infettive, Ospedale Amedeo di Savoia, Corso Svizzera 164, Torino 10149, Italy
| | - Eugenio Alladio
- Dipartimento di Chimica, Università degli Studi di Torino, Via Pietro Giuria 7, Torino 10125, Italy; Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, Orbassano 10043, Torino, Italy.
| | - Veronica Casalini
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Via Bovio 6, Novara 28100, Italy
| | - M Paola Puccinelli
- SC di Biochimica Clinica, Città della Salute e della Scienza, Corso Bramante 88, Torino 10126, Italy
| | - Paola Massarenti
- SC di Biochimica Clinica, Città della Salute e della Scienza, Corso Bramante 88, Torino 10126, Italy; SC di Dietetica e Nutrizione Clinica, Città della Salute e della Scienza, Corso Bramante 88, Torino 10126, Italy
| | - Marco Pazzi
- Dipartimento di Chimica, Università degli Studi di Torino, Via Pietro Giuria 7, Torino 10125, Italy
| | - Silvio Aprile
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Via Bovio 6, Novara 28100, Italy
| | - Antonella De Francesco
- SC di Dietetica e Nutrizione Clinica, Città della Salute e della Scienza, Corso Bramante 88, Torino 10126, Italy
| | - Giulio Mengozzi
- SC di Biochimica Clinica, Città della Salute e della Scienza, Corso Bramante 88, Torino 10126, Italy
| | - Antonio D'Avolio
- Laboratorio di Farmacologia Clinica e Farmacogenetica, Dipartimento di Scienze Mediche, Clinica delle Malattie Infettive, Ospedale Amedeo di Savoia, Corso Svizzera 164, Torino 10149, Italy
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12
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Gas chromatography-mass spectrometry-based analytical strategies for fatty acid analysis in biological samples. J Food Drug Anal 2019; 28:60-73. [PMID: 31883609 DOI: 10.1016/j.jfda.2019.10.003] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 10/21/2019] [Accepted: 10/30/2019] [Indexed: 02/07/2023] Open
Abstract
Fatty acids play critical roles in biological systems. Imbalances in fatty acids are related to a variety of diseases, which makes the measurement of fatty acids in biological samples important. Many analytical strategies have been developed to investigate fatty acids in various biological samples. Due to the structural diversity of fatty acids, many factors need to be considered when developing analytical methods including extraction methods, derivatization methods, column selections, and internal standard selections. This review focused on gas chromatography-mass spectrometry (GC-MS)-based methods. We reviewed several commonly used fatty acid extraction approaches, including liquid-liquid extraction and solid-phase microextraction. Moreover, both acid and base derivatization methods and other specially designed methods were comprehensively reviewed, and their strengths and limitations were discussed. Having good separation efficiency is essential to building an accurate and reliable GC-MS platform for fatty acid analysis. We reviewed the separation performance of different columns and discussed the application of multidimensional GC for improving separations. The selection of internal standards was also discussed. In the final section, we introduced several biomedical studies that measured fatty acid levels in different sample matrices and provided hints on the relationships between fatty acid imbalances and diseases.
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Haubold S, Kröger-Koch C, Starke A, Tuchscherer A, Tröscher A, Kienberger H, Rychlik M, Bernabucci U, Trevisi E, Hammon HM. Effects of abomasal infusion of essential fatty acids and conjugated linoleic acid on performance and fatty acid, antioxidative, and inflammatory status in dairy cows. J Dairy Sci 2019; 103:972-991. [PMID: 31704022 DOI: 10.3168/jds.2019-17135] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 09/23/2019] [Indexed: 12/26/2022]
Abstract
The objective of this study was to test the effects of essential fatty acids (EFA), particularly α-linolenic acid, and conjugated linoleic acid (CLA) supplementation on fatty acid (FA) composition, performance, and systemic and hepatic antioxidative and inflammatory responses in dairy cows. Four cows (126 ± 4 d in milk) were investigated in a 4 × 4 Latin square and were abomasally infused with 1 of the following for 6 wk: (1) coconut oil (control treatment, CTRL; 38.3 g/d; providing saturated FA), (2) linseed and safflower oil (EFA treatment; 39.1 and 1.6 g/d, respectively; providing mainly α-linolenic acid), (3) Lutalin (BASF, Ludwigshafen, Germany; CLA treatment; cis-9,trans-11 and trans-10,cis-12 CLA, 4.6 g/d each), (4) or EFA+CLA. The initial dosage was doubled every 2 wk, resulting in 3 dosages (dosage 1, 2, and 3). Cows were fed a corn silage-based total mixed ration with a high n-6/n-3 FA ratio. Dry matter intake and milk yield were recorded daily, and milk composition was measured weekly. The FA compositions of milk fat and blood plasma were analyzed at wk 0, 2, 4, and 6. The plasma concentration and hepatic mRNA abundance of parameters linked to the antioxidative and inflammatory response were analyzed at wk 0 and 6 of each treatment period. Infused FA increased in blood plasma and milk of the respective treatment groups in a dose-dependent manner. The n-6/n-3 FA ratio in milk fat was higher in CTRL and CLA than in EFA and EFA+CLA. The sum of FA <C16 in milk fat decreased in CLA and EFA+CLA in a dosage-dependent manner. Energy-corrected milk and milk fat decreased in CLA and EFA+CLA in a dosage-dependent manner and were higher in EFA and CTRL than in CLA at dosages 2 and 3. Energy balance tended to be highest in CLA cows. Milk protein content was lower in CLA and EFA+CLA than in CTRL. Milk urea concentration decreased in CLA and EFA+CLA in a dosage-dependent manner and was lower in CLA and EFA+CLA than in EFA and CTRL at dosages 2 and 3. Milk citrate concentration increased in CLA in a dosage-dependent manner and was higher in CLA and EFA+CLA than in EFA and CTRL. Glutathione peroxidase activity in blood plasma was lower in CTRL than in EFA, and plasma concentration of β-carotene increased in EFA and EFA+CLA with dosage. Increased milk citrate pointed at reduced de novo FA synthesis and a better antioxidative status in milk due to CLA treatment. Supplementation with CLA may also affect milk protein synthesis, but EFA and CLA treatment did not influence the inflammatory status in a consistent manner in mid-lactating cows.
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Affiliation(s)
- S Haubold
- Leibniz Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - C Kröger-Koch
- Leibniz Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - A Starke
- Clinic for Ruminants and Swine, Faculty of Veterinary Medicine, University of Leipzig, 04103 Leipzig, Germany
| | - A Tuchscherer
- Leibniz Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | | | - H Kienberger
- Bavarian Center for Biomolecular Mass Spectrometry, Technische Universität München, 85354 Freising, Germany
| | - M Rychlik
- Chair of Analytical Food Chemistry, Technical University of Munich, 85354 Freising, Germany
| | - U Bernabucci
- Dipartimento di Scienze Agrarie e Forestali, Università degli Studi della Tuscia, 01100 Viterbo, Italy
| | - E Trevisi
- Department of Animal Sciences, Food and Nutrition (DIANA), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy
| | - H M Hammon
- Leibniz Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany.
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Giller K, Drews B, Berard J, Kienberger H, Schmicke M, Frank J, Spanier B, Daniel H, Geisslinger G, Ulbrich SE. Bovine embryo elongation is altered due to maternal fatty acid supplementation. Biol Reprod 2019; 99:600-610. [PMID: 29668864 DOI: 10.1093/biolre/ioy084] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 04/11/2018] [Indexed: 12/16/2022] Open
Abstract
The pre-implantation period is prone to embryonic losses in bovine. Embryo-maternal communication is crucial to support embryo development. Thereby, factors of the uterine fluid (UF) are of specific importance. The maternal diet can affect the UF composition. Since omega 3 fatty acids (omega 3 FA) are considered to be beneficial for reproduction, we investigated if dietary omega 3 FA affected factors in the UF related to embryo elongation. Angus heifers (n = 37) were supplemented with either 450 g of rumen-protected fish oil (omega 3 FA) or sunflower oil (omega 6 FA) for a period of 8 weeks. Following cycle synchronization and artificial insemination, the uteri were flushed post mortem to recover the embryos on day 15 of pregnancy. The UF and tissue samples of endometrium and corpus luteum (CL) were collected. Strikingly, the embryo elongation in the omega 3 group was enhanced compared to the omega 6 group. No differences were observed in uterine prostaglandins, even though the endometrial concentration of their precursor arachidonic acid was reduced in omega 3 compared to omega 6 heifers. The dietary FA neither led to differential expression of target genes in endometrium nor CL nor to a differential abundance of low-density lipoprotein cholesterol, cortisol or amino acids in the UF. Interestingly, the omega 3 group displayed a higher plasma progesterone concentration during luteal growth than the omega 6 group, possibly promoting embryo elongation. Further research should include an ovarian perspective to understand the functional link between dietary omega 3 FA and reproductive outcome.
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Affiliation(s)
- Katrin Giller
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
| | - Barbara Drews
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
| | - Joel Berard
- ETH Zurich, Animal Nutrition, Institute of Agricultural Sciences, Zurich, Switzerland
| | - Hermine Kienberger
- Bavarian Center for Biomolecular Mass Spectrometry, Technische Universität München, Freising, Germany
| | - Marion Schmicke
- University of Veterinary Medicine, Clinic for Cattle, Endocrinology, Hannover, Germany
| | - Jan Frank
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Stuttgart, Germany
| | - Britta Spanier
- Nutritional Physiology, Technische Universität München, Freising, Germany
| | - Hannelore Daniel
- Nutritional Physiology, Technische Universität München, Freising, Germany
| | - Gerd Geisslinger
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
| | - Susanne E Ulbrich
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
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15
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Furtado JD, Beqari J, Campos H. Comparison of the Utility of Total Plasma Fatty Acids Versus those in Cholesteryl Ester, Phospholipid, and Triglyceride as Biomarkers of Fatty Acid Intake. Nutrients 2019; 11:nu11092081. [PMID: 31484459 PMCID: PMC6770493 DOI: 10.3390/nu11092081] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 12/14/2022] Open
Abstract
Total plasma fatty acids or those in cholesteryl ester and phospholipids are often used to reflect fatty acid intake in epidemiological studies, but their relative performance as biomarkers of intake has not been clearly evaluated within a single population. The assessment of fatty acids in plasma fractions is more labor intensive. Thus, their use as biomarkers of dietary intake needs to be justified. Dietary intake was assessed in 200 population-based controls from a case-control study of diet and heart disease in Costa Rica by a validated food frequency questionnaire (FFQ). Fatty acids in fasting whole plasma and plasma fractions (cholesteryl ester, phospholipid, and triglyceride + free fatty acid) were measured in the 200 controls by the same laboratory using gas chromatography with flame ionization detection (GC-FID). We compared the plasma and plasma fractions data with the FFQ and adipose fatty acid profile using partial Spearman correlations to assess utility as biomarkers of intake and exposure. We found that whole plasma was equally or more strongly correlated with the FFQ and adipose fatty acid profile than either cholesteryl ester or phospholipid in most of the established markers of dietary intake, including dairy (15:0 and 17:0) and seafood (eicosapentaenoic acid and docosahexaenoic acid). Of the three plasma fractions, only fatty acids in the plasma triglyceride + free fatty acid fraction had stronger correlations with dietary intake than whole plasma. In our study population, fatty acids measured in fasting whole plasma perform as good as or better than those measured in plasma fractions as biomarkers for dietary fatty acid intake. Thus, the fractionation of plasma to evaluate long-term fatty acid intake may not be warranted.
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Affiliation(s)
- Jeremy D Furtado
- Nutritional Biomarker Laboratory, Department of Nutrition, Harvard T.H. Chan School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA.
| | - Jorind Beqari
- Nutritional Biomarker Laboratory, Department of Nutrition, Harvard T.H. Chan School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA
| | - Hannia Campos
- Nutritional Biomarker Laboratory, Department of Nutrition, Harvard T.H. Chan School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA
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Dietary Fatty Acids Affect Red Blood Cell Membrane Composition and Red Blood Cell ATP Release in Dairy Cows. Int J Mol Sci 2019; 20:ijms20112769. [PMID: 31195708 PMCID: PMC6600345 DOI: 10.3390/ijms20112769] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/29/2019] [Accepted: 06/04/2019] [Indexed: 12/29/2022] Open
Abstract
Diets of dairy cows are often based on maize silage (MS), delivering lower amounts of n-3 fatty acids (FA) compared to grass silage-based diets. The fatty acid composition of the cell membrane can affect the cell function. We evaluated the effects of an MS-based diet on bovine red blood cell (RBC) membrane FA composition and dietary effects on controlled ATP release of RBC. In trial 1, German Holstein cows were fed an MS-based total mixed ration for 24 weeks. The FA composition of RBC membranes from repeatedly taken blood samples was analysed in addition to the abundance of the RBC membrane protein flotillin-1, which is involved in, for example, cell signalling. In trial 2, four rumen fistulated MS-fed cows were abomasally infused in a 4 × 4 Latin square model with three successively increasing lipid dosages (coconut oil, linseed–safflower oil mix (EFA; rich in n-3 FA), Lutalin®, providing conjugated linoleic acids (CLA) or the combination of the supplements, EFA + CLA) for six weeks, followed by a three-week washout period. In trial 2, we analysed RBC ATP release, flotillin-1, and the membrane protein abundance of pannexin-1, which is involved in ATP release as the last part of a signalling cascade. In trial 1, the total amount of n-3 FA in RBC membranes decreased and the flotillin-1 abundance increased over time. In trial 2, the RBC n-3 FA amount was higher after the six-week infusion period of EFA or EFA + CLA. Furthermore, depending on the dosage of FA, the ATP release from RBC increased. The abundance of flotillin-1 and pannexin-1 was not affected in trial 2. It is concluded that changes of the membrane FA composition influence the RBC function, leading to altered ATP release from intact bovine RBC.
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LC-MS/MS bioanalysis of plasma 1, 14-tetradecanedioic acid and 1, 16-hexadecanedioic acid as candidate biomarkers for organic anion-transporting polypeptide mediated drug-drug interactions. Bioanalysis 2018; 10:1473-1485. [PMID: 30215261 DOI: 10.4155/bio-2018-0170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM A robust LC-MS/MS assay was developed to quantify endogenous 1, 14-tetradecanedioic acid (TDA) and 1, 16-hexadecanedioic acid (HDA) in human plasma as potential biomarkers for evaluating drug-drug interactions mediated by the hepatic drug transporters, organic anion-transporting polypeptides. RESULTS This assay was validated using fit-for-purpose approach over standard curve range of 2.5-1000 nM for TDA and HDA using analyte-free charcoal-stripped human plasma as the surrogate matrix. Chromatographic separation condition was successfully optimized to separate TDA from an interference peak while maintaining both analytes in neutral forms to minimize carryover issue. CONCLUSION The described assay is currently applied to a clinical study for evaluating TDA/HDA as potential substitute biomarkers for drug-drug interaction studies.
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Huang Z, Qiu R, Huang Y, Liu H, Pan Z, Wang L. Rapid Analysis of Fatty Acid Composition in Polysorbate 80 by Gas Chromatography with On-line Pyrolytic Methylation Technique. Chromatographia 2018. [DOI: 10.1007/s10337-018-3488-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Ito Z, Uchiyama K, Odahara S, Takami S, Saito K, Kobayashi H, Koido S, Kubota T, Ohkusa T, Saruta M. Fatty Acids as Useful Serological Markers for Crohn's Disease. Dig Dis 2017; 36:209-217. [PMID: 29275413 DOI: 10.1159/000485096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/06/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND We have previously reported that patients with Crohn's disease (CD) have a very specific erythrocyte membrane phospholipid fatty acid profile. The findings of this study suggest that the activities of enzymes involved in the metabolism of linoleic acid (LA), that is, delta-6 desaturase, are higher in CD patients than in healthy individuals. METHODS We evaluated the utilities of various fatty acid compositions of the plasma (p-) as new serological markers for CD compared to those of erythrocyte membranes (e-). RESULTS Fifty CD patients and 50 healthy individuals were enrolled. In both plasma and erythrocyte membranes, the weight percentages of palmitic acid (PA) were significantly higher, while those of LA were significantly lower in CD patients than in controls. Fatty acids with high sensitivity and specificity were p-PA (0.86 and 0.74) and e-PA (0.80 and 0.74). With PA and LA as a CD fatty acid index (CDFAi), that is, CDFAi = (PA/LA), the sensitivity and specificity of plasma CDFAi (p-CDFAi) and e-CDFAi were 0.80 and 0.80; and 0.82 and 0.88 respectively. CONCLUSION In CD patients, various fatty acids were specifically altered in both plasma and erythrocytes, and p-PA and p-CDFAi are potentially useful as new serological markers for CD.
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Affiliation(s)
- Zensho Ito
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Kan Uchiyama
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Shunichi Odahara
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Shinichiro Takami
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Keisuke Saito
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Hiroko Kobayashi
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Shigeo Koido
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Takahiro Kubota
- Department of Biopharmaceutics, Faculty of Pharmaceutical Science, Niigata University of Pharmacy and Applied Life Sciences, Niigata, Japan
| | - Toshifumi Ohkusa
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Jikei University School of Medicine (Kashiwa Hospital), Chiba, Japan
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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20
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Ringling C, Rychlik M. Simulation of Food Folate Digestion and Bioavailability of an Oxidation Product of 5-Methyltetrahydrofolate. Nutrients 2017; 9:nu9090969. [PMID: 28862677 PMCID: PMC5622729 DOI: 10.3390/nu9090969] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 08/26/2017] [Accepted: 08/28/2017] [Indexed: 11/17/2022] Open
Abstract
Generating bioavailability data from in vivo studies is time-consuming and expensive. In vitro simulation can help to investigate factors influencing bioavailability or facilitate quantifying the impact of such factors. For folates, an efficient deconjugation of polyglutamates to the corresponding monoglutamates is crucial for bioavailability and highly dependent on the food matrix. Therefore, the bioaccessibility of folates of different foodstuffs was examined using a simulated digestion model with respect to folate stability and the efficiency of deconjugation. For realistic simulated deconjugation, porcine brush border membrane was used during the phase of the simulated digestion in the small intestine. For a better understanding of folate behaviour during digestion, single folate monoglutamates were also investigated with this in vitro digestion model. The results for bioaccessibility were compared with data from a human bioavailability study. They support the idea that both stability and deconjugation have an influence on bioaccessibility and thus on bioavailability. Tetrahydrofolate is probably lost completely or at least to a high extent and the stability of 5-methyltetrahydrofolate depends on the food matrix. Additionally, 5-methyltetrahydrofolate can be oxidised to a pyrazino-s-triazine (MeFox), whose absorption in the human intestinal tract was shown tentatively.
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Affiliation(s)
- Christiane Ringling
- Division BIOANALYTIK Weihenstephan, Research Center for Nutrition and Food Sciences (Z. I. E. L.), Technical University of Munich, Alte Akademie 10, D-85350 Freising, Germany.
| | - Michael Rychlik
- Division BIOANALYTIK Weihenstephan, Research Center for Nutrition and Food Sciences (Z. I. E. L.), Technical University of Munich, Alte Akademie 10, D-85350 Freising, Germany.
- Chair of Analytical Food Chemistry, Technical University of Munich, Alte Akademie 10, D-85350 Freising, Germany.
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Sethi S, Brietzke E. Recent advances in lipidomics: Analytical and clinical perspectives. Prostaglandins Other Lipid Mediat 2017; 128-129:8-16. [DOI: 10.1016/j.prostaglandins.2016.12.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 12/22/2016] [Accepted: 12/22/2016] [Indexed: 10/20/2022]
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22
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The effect of chopped, extruded and pelleted alfalfa silage on the egg quality of organic laying hens. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Liu TW, Heden TD, Matthew Morris E, Fritsche KL, Vieira-Potter VJ, Thyfault JP. High-Fat Diet Alters Serum Fatty Acid Profiles in Obesity Prone Rats: Implications for In Vitro Studies. Lipids 2015; 50:997-1008. [PMID: 26318121 DOI: 10.1007/s11745-015-4061-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 08/10/2015] [Indexed: 12/27/2022]
Abstract
High-fat diets (HFD) are commonly used in rodents to induce obesity, increase serum fatty acids and induce lipotoxicity in various organs. In vitro studies commonly utilize individual free fatty acids (FFA) to study lipid exposure in an effort to model what is occurring in vivo; however, these approaches are not physiological as tissues are exposed to multiple fatty acids in vivo. Here we characterize circulating lipids in obesity-prone rats fed an HFD in both fasted and fed states with the goal of developing physiologically relevant fatty acid mixtures for subsequent in vitro studies. Rats were fed an HFD (60% kcal fat) or a control diet (10% kcal fat) for 3 weeks; liver tissue and both portal and systemic blood were collected. Fatty acid profiles and absolute concentrations of triglycerides (TAG) and FFA in the serum and TAG, diacylglycerol (DAG) and phospholipids in the liver were measured. Surprisingly, both systemic and portal serum TAG were ~40% lower in HFD-fed compared to controls. Overall, compared to the control diet, HFD feeding consistently induced an increase in the proportion of circulating polyunsaturated fatty acids (PUFA) with a concomitant decline in monounsaturated fatty acids (MUFA) and saturated fatty acids (SFA) in both serum TAG and FFA. The elevations of PUFA were mostly attributed to increases in n-6 PUFA, linoleic acid and arachidonic acid. In conclusion, fatty acid mixtures enriched with linoleic and arachidonic acid in addition to SFA and MUFA should be utilized for in vitro studies attempting to model lipid exposures that occur during in vivo HFD conditions.
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Affiliation(s)
- Tzu-Wen Liu
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA. .,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
| | - Timothy D Heden
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA. .,Department of Kinesiology, East Carolina University, Greenville, NC, 27843, USA.
| | - E Matthew Morris
- Molecular and Integrative Physiology, University of Kansas Medical Center, 2067 Hemenway Life Sciences and Innovation Center, MS: 3043, 3901 Rainbow Blvd, Kansas, KS, 66160, USA.
| | - Kevin L Fritsche
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA. .,Animal Sciences, University of Missouri, Columbia, MO, 65211, USA.
| | | | - John P Thyfault
- Molecular and Integrative Physiology, University of Kansas Medical Center, 2067 Hemenway Life Sciences and Innovation Center, MS: 3043, 3901 Rainbow Blvd, Kansas, KS, 66160, USA. .,Research Service, Kansas City VA Medical Center, Kansas, MO, 64128, USA.
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Simple Methodology for the Quantitative Analysis of Fatty Acids in Human Red Blood Cells. Chromatographia 2015. [DOI: 10.1007/s10337-015-2947-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Ostermann AI, Müller M, Willenberg I, Schebb NH. Determining the fatty acid composition in plasma and tissues as fatty acid methyl esters using gas chromatography – a comparison of different derivatization and extraction procedures. Prostaglandins Leukot Essent Fatty Acids 2014; 91:235-41. [PMID: 25458899 DOI: 10.1016/j.plefa.2014.10.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 09/20/2014] [Accepted: 10/03/2014] [Indexed: 11/25/2022]
Abstract
Analysis of the fatty acid (FA) composition in biological samples is commonly carried out using gas liquid chromatography (GC) after transesterification to volatile FA methyl esters (FAME). We compared the efficacy of six frequently used protocols for derivatization of different lipid classes as well as for plasma and tissue samples. Transesterification with trimethylsulfonium hydroxide (TMSH) led to insufficient derivatization efficacies for polyunsaturated FAs (PUFA, <50%). Derivatization in presence of potassium hydroxide (KOH) failed at derivatizing free FAs (FFAs). Boron trifluoride (BF3) 7% in hexane/MeOH (1:1) was insufficient for the transesterification of cholesterol ester (CE) as well as triacylglycerols (TGs). In contrast, methanolic hydrochloric acid (HCl) as well as a combination of BF3 with methanolic sodium hydroxide (NaOH+BF3) were suitable for the derivatization of FFAs, polar lipids, TGs, and CEs (derivatization rate >80% for all tested lipids). Regarding plasma samples, all methods led to an overall similar relative FA pattern. However, significant differences were observed, for example, for the relative amount of EPA+DHA (n3-index). Absolute FA plasma concentrations differed considerably among the methods, with low yields for KOH and BF3. We also demonstrate that lipid extraction with tert-butyl methyl ether/methanol (MTBE/MeOH) is as efficient as the classical method according to Bligh and Dyer, making it possible to replace (environmentally) toxic chloroform.We conclude that HCl-catalyzed derivatization in combination with MeOH/MTBE extraction is the most appropriate among the methods tested for the analysis of FA concentrations and FA pattern in small biological samples. A detailed protocol for the analysis of plasma and tissues is included in this article.
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26
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Li L, Han J, Wang Z, Liu J, Wei J, Xiong S, Zhao Z. Mass spectrometry methodology in lipid analysis. Int J Mol Sci 2014; 15:10492-507. [PMID: 24921707 PMCID: PMC4100164 DOI: 10.3390/ijms150610492] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/22/2014] [Accepted: 05/28/2014] [Indexed: 12/20/2022] Open
Abstract
Lipidomics is an emerging field, where the structures, functions and dynamic changes of lipids in cells, tissues or body fluids are investigated. Due to the vital roles of lipids in human physiological and pathological processes, lipidomics is attracting more and more attentions. However, because of the diversity and complexity of lipids, lipid analysis is still full of challenges. The recent development of methods for lipid extraction and analysis and the combination with bioinformatics technology greatly push forward the study of lipidomics. Among them, mass spectrometry (MS) is the most important technology for lipid analysis. In this review, the methodology based on MS for lipid analysis was introduced. It is believed that along with the rapid development of MS and its further applications to lipid analysis, more functional lipids will be identified as biomarkers and therapeutic targets and for the study of the mechanisms of disease.
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Affiliation(s)
- Lin Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing 100190, China.
| | - Juanjuan Han
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing 100190, China.
| | - Zhenpeng Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing 100190, China.
| | - Jian'an Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing 100190, China.
| | - Jinchao Wei
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing 100190, China.
| | - Shaoxiang Xiong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing 100190, China.
| | - Zhenwen Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing 100190, China.
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27
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Validation of the sensitive and accurate quantitation of the fatty acid distribution in bovine milk. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2013.11.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Sertoglu E, Kurt I, Tapan S, Uyanik M, Serdar MA, Kayadibi H, El-Fawaeir S. Comparison of plasma and erythrocyte membrane fatty acid compositions in patients with end-stage renal disease and type 2 diabetes mellitus. Chem Phys Lipids 2014; 178:11-7. [PMID: 24384240 DOI: 10.1016/j.chemphyslip.2013.12.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 12/22/2013] [Accepted: 12/23/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND In this study, we aimed to compare the serum lipid profile and fatty acid (FA) compositions of erythrocyte membrane (EM) and plasma in three different patient groups (group 1: type 2 diabetes mellitus (T2DM)+end-stage renal disease (ESRD), group 2: ESRD, group 4: T2DM) and healthy controls (group 3) simultaneously. METHODS 40 ESRD patients treated with hemodialysis (HD) in Gulhane School of Medicine (20 with T2DM) and 32 controls (17 with T2DM, 15 healthy controls) were included in the study. Plasma and EM FA concentrations were measured by gas chromatography-flame ionization detector (GC-FID). RESULTS Plasma and EM palmitic acid (PA) and stearic acid (SA) levels were significantly higher in T2DM patients compared to controls (p=0.040 and p=0.002 for plasma, p=0.001 and p=0.010 for EM, respectively). EM docosahexaenoic acid (DHA) levels were also significantly lower in patients with ESRD+T2DM and ESRD compared to controls (p=0.004 and p=0.037, respectively). CONCLUSIONS Patients with insulin resistance display a pattern of high long chain saturated FAs (PA, SA and arachidic acids). However, while there are no recognized standards for normal EM DHA content, decreased levels of EM DHA in ESRD patient groups (groups 1 and 2) suggest that there may be reduced endogenous synthesis of DHA in HD subjects, due to the decreased functionality of desaturase and elongase enzymes. Because membrane PUFA content affects membrane fluidity and cell signaling, these findings are worthy of further investigation.
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Affiliation(s)
- Erdim Sertoglu
- Ankara Mevki Military Hospital, Anittepe Dispensary, Ankara, Turkey.
| | - Ismail Kurt
- Gulhane School of Medicine, Department of Medical Biochemistry, Ankara, Turkey
| | - Serkan Tapan
- Gulhane School of Medicine, Department of Medical Biochemistry, Ankara, Turkey
| | - Metin Uyanik
- Gulhane School of Medicine, Department of Medical Biochemistry, Ankara, Turkey
| | - Muhittin A Serdar
- Acıbadem University School of Medicine, Department of Medical Biochemistry, Istanbul, Turkey
| | - Huseyin Kayadibi
- Adana Military Hospital, Department of Medical Biochemistry, Adana, Turkey
| | - Saad El-Fawaeir
- Gulhane School of Medicine, Department of Medical Biochemistry, Ankara, Turkey
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