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Monteiro JP, Maciel E, Melo T, Flanagan C, Urbani N, Neves J, Domingues MR. The plasma phospholipidome of Tursiops truncatus: From physiological insight to the design of prospective tools for managed cetacean monitorization. Lipids 2021; 56:461-473. [PMID: 34036588 DOI: 10.1002/lipd.12307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 01/13/2023]
Abstract
Plasma biochemical analysis remains one of the established ways of monitoring captive marine mammal health. More recently, complementary plasma lipidomic analysis has proven to be a valid tool in disease diagnosis and prevention, with the potential to validate and complement common biochemical analysis, providing a more integrative approach. In this study, we thoroughly characterized the plasma polar lipid content of Tursiops truncatus, the most common cetacean species held under human care. Our results showed that phosphatidylcholine, lysophosphatidylcholine, and sphingomyelins (CerPCho) are the most represented phospholipid classes in T. truncatus plasma. Palmitic, oleic, and stearic acids are the major fatty acid (FA) present esterified to the plasma polar lipids of this species, although some n-3 species are also remarkably present, namely eicosapentaenoic and docosahexaenoic acids. The polar lipidome identified by HILIC LC-MS allowed identifying 304 different lipid species. These species belong to the phosphatidylcholine (103 lipid species), lysophosphatidylcholine (35), phosphatidylethanolamine (71), lysophosphatidylethanolamine (20), phosphatidylglycerol (13), lysophosphatidylglycerol (5), phosphatidylinositol (15), lysophosphatidylinositol (3), phosphatidylserine (6) lysophosphatidylserine (1), and sphimgomyelin (32) classes. This was the first time that the dolphin plasma phospholipid profile was characterized, providing a knowledge that will be important to further understand lipid metabolism and physiological regulation in small cetaceans. Furthermore, this study proved the practicability of the use of plasma lipid profiling for health assessment in marine mammals under human care.
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Affiliation(s)
- João P Monteiro
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal.,CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Elisabete Maciel
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal.,CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Tânia Melo
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal.,CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | | | | | | | - Maria Rosário Domingues
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal.,CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Aveiro, Portugal
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2
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Chen L, Zhang S, Sun X, McDonald JD, Bruno RS, Zhu J. Application of Comparative Lipidomics to Elucidate Postprandial Metabolic Excursions Following Dairy Milk Ingestion in Individuals with Prediabetes. J Proteome Res 2021; 20:2583-2595. [PMID: 33719448 PMCID: PMC8106868 DOI: 10.1021/acs.jproteome.0c01009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Nutrient-dense dairy foods are an important component of a healthy diet. Recommendations, however, advise non- and low-fat dairy foods despite controversy concerning whether full-fat dairy foods adversely impact cardiometabolic health. Therefore, in this study, our objective is to examine the differential plasma lipidomic responses to non-fat or full-fat milk ingestion during postprandial hyperglycemia. Seven adults with prediabetes completed a randomized cross-over study in which glucose was consumed alone or with non-fat or full-fat dairy milk. Plasma samples collected at 90 min and 180 min post milk ingestion were used to perform untargeted lipidomics analysis. A total of 332 lipids from 20 classes and five lipid categories were detected at different time points during the postprandial period. Dairy milk, especially non-fat milk, protected against lipid changes otherwise induced by glucose ingestion. Co-ingestion of dairy milk with glucose, regardless of fat content, significantly altered lipid profiles although full-fat milk more substantially modulated lipid profiles. For the identified lipid biomarkers, 68.0% and 66.7% of the lipids significantly increased at 90 and 180 min, respectively, while phosphatidylcholines (GPs) contributed most for the significant increase. Comparative lipidomics analysis indicated that both types of dairy milk induced significant changes in several lipid pathways, including glycerophospholipid metabolism and α-linolenic acid metabolism, to protect against postprandial hyperglycemia. In summary, our comparative lipidomics results suggested that dairy milk-mediated lipid modulation may be an effective dietary approach to reduce the risk of metabolic diseases among those with prediabetes.
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Affiliation(s)
- Li Chen
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
- James Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Shiqi Zhang
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Xiaowei Sun
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Joshua D. McDonald
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Richard S. Bruno
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Jiangjiang Zhu
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
- James Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
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3
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Zhang L, Xiao M, Wang Y, Peng S, Chen Y, Zhang D, Zhang D, Guo Y, Wang X, Luo H, Zhou Q, Xu Y. Fast Screening and Primary Diagnosis of COVID-19 by ATR-FT-IR. Anal Chem 2021; 93:2191-2199. [PMID: 33427452 PMCID: PMC7805601 DOI: 10.1021/acs.analchem.0c04049] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/18/2020] [Indexed: 12/21/2022]
Abstract
The outbreak of coronavirus disease 2019 (COVID-19) has led to substantial infections and mortality around the world. Fast screening and diagnosis are thus crucial for quick isolation and clinical intervention. In this work, we showed that attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FT-IR) can be a primary diagnostic tool for COVID-19 as a supplement to in-use techniques. It requires only a small volume (∼3 μL) of the serum sample and a shorter detection time (several minutes). The distinct spectral differences and the separability between normal control and COVID-19 were investigated using multivariate and statistical analysis. Results showed that ATR-FT-IR coupled with partial least squares discriminant analysis was effective to differentiate COVID-19 from normal controls and some common respiratory viral infections or inflammation, with the area under the receiver operating characteristic curve (AUROC) of 0.9561 (95% CI: 0.9071-0.9774). Several serum constituents including, but not just, antibodies and serum phospholipids could be reflected on the infrared spectra, serving as "chemical fingerprints" and accounting for good model performances.
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Affiliation(s)
- Liyang Zhang
- Department of Electrical Engineering,
Tsinghua University, Beijing 100084,
China
| | - Meng Xiao
- Department of Laboratory Medicine,
Peking Union Medical College Hospital, Peking Union Medical College,
Chinese Academy of Medical Sciences,
Beijing 100730, China
| | - Yao Wang
- Department of Laboratory Medicine,
Peking Union Medical College Hospital, Peking Union Medical College,
Chinese Academy of Medical Sciences,
Beijing 100730, China
| | - Siqi Peng
- Department of Electrical Engineering,
Tsinghua University, Beijing 100084,
China
| | - Yu Chen
- Department of Laboratory Medicine,
Peking Union Medical College Hospital, Peking Union Medical College,
Chinese Academy of Medical Sciences,
Beijing 100730, China
| | - Dong Zhang
- Department of Laboratory Medicine,
Peking Union Medical College Hospital, Peking Union Medical College,
Chinese Academy of Medical Sciences,
Beijing 100730, China
| | - Dongheyu Zhang
- Department of Electrical Engineering,
Tsinghua University, Beijing 100084,
China
| | - Yuntao Guo
- Department of Electrical Engineering,
Tsinghua University, Beijing 100084,
China
| | - Xinxin Wang
- Department of Electrical Engineering,
Tsinghua University, Beijing 100084,
China
| | - Haiyun Luo
- Department of Electrical Engineering,
Tsinghua University, Beijing 100084,
China
| | - Qun Zhou
- Department of Chemistry, Key Laboratory
of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of
Education), Tsinghua University, Beijing
100084, China
| | - Yingchun Xu
- Department of Laboratory Medicine,
Peking Union Medical College Hospital, Peking Union Medical College,
Chinese Academy of Medical Sciences,
Beijing 100730, China
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4
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Zhang L, Xiao M, Wang Y, Peng S, Chen Y, Zhang D, Zhang D, Guo Y, Wang X, Luo H, Zhou Q, Xu Y. Fast Screening and Primary Diagnosis of COVID-19 by ATR-FT-IR. Anal Chem 2021; 93:2191-2199. [PMID: 33427452 DOI: 10.1021/acs.analchem.0c0404910.1021/acs.analchem.0c04049.s001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The outbreak of coronavirus disease 2019 (COVID-19) has led to substantial infections and mortality around the world. Fast screening and diagnosis are thus crucial for quick isolation and clinical intervention. In this work, we showed that attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FT-IR) can be a primary diagnostic tool for COVID-19 as a supplement to in-use techniques. It requires only a small volume (∼3 μL) of the serum sample and a shorter detection time (several minutes). The distinct spectral differences and the separability between normal control and COVID-19 were investigated using multivariate and statistical analysis. Results showed that ATR-FT-IR coupled with partial least squares discriminant analysis was effective to differentiate COVID-19 from normal controls and some common respiratory viral infections or inflammation, with the area under the receiver operating characteristic curve (AUROC) of 0.9561 (95% CI: 0.9071-0.9774). Several serum constituents including, but not just, antibodies and serum phospholipids could be reflected on the infrared spectra, serving as "chemical fingerprints" and accounting for good model performances.
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Affiliation(s)
- Liyang Zhang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Meng Xiao
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Yao Wang
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Siqi Peng
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu Chen
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Dong Zhang
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Dongheyu Zhang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Yuntao Guo
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Xinxin Wang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Haiyun Luo
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Qun Zhou
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Yingchun Xu
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Kim M, Yoo HJ, Lee D, Lee JH. Oxidized LDL induces procoagulant profiles by increasing lysophosphatidylcholine levels, lysophosphatidylethanolamine levels, and Lp-PLA 2 activity in borderline hypercholesterolemia. Nutr Metab Cardiovasc Dis 2020; 30:1137-1146. [PMID: 32456947 DOI: 10.1016/j.numecd.2020.03.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 01/17/2020] [Accepted: 03/20/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS The increased risk of cardiovascular disease under hypercholesterolemia is due to associations between oxidized low-density lipoprotein (ox-LDL) and lipoprotein-associated phospholipase A2 (Lp-PLA2) and between ox-LDL and coagulant profiles. We investigated the impact of different ox-LDL levels on coagulation time and plasma metabolomes in subjects with borderline hypercholesterolemia. METHODS AND RESULTS One hundred thirty-one subjects with borderline hypercholesterolemia (serum cholesterol ≥200 mg/dL) were divided into low ox-LDL (n = 66) and high ox-LDL (n = 65) groups. After adjusting for confounding factors, the high ox-LDL group exhibited a significantly decreased activated partial thromboplastin time (aPTT) and prothrombin time (PT) and increased Lp-PLA2 activity. Compared to the low ox-LDL group, the high ox-LDL group exhibited significantly increased intensities of 17 lysophosphatidylcholines (lysoPCs) and 7 lysophosphatidylethanolamines (lysoPEs). Ox-LDL was inversely correlated with aPTT and PT and positively correlated with Lp-PLA2 activity. Positive correlations were also found among ox-LDL, Lp-PLA2 activity, lysoPCs, and lysoPEs. LysoPCs and lysoPEs were inversely correlated with PT and aPTT. The identified plasma metabolites, including amino acids, fatty acid amides, acylcarnitines, and lysophospholipids, were significantly upregulated in the high ox-LDL group. CONCLUSION High ox-LDL levels may be involved in the development of a procoagulant state in subjects with borderline hypercholesterolemia by increasing Lp-PLA2 activity and lysoPC and lysoPE levels.
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Affiliation(s)
- Minjoo Kim
- Department of Food and Nutrition, College of Life Science and Nano Technology, Hannam University, Daejeon, South Korea
| | - Hye Jin Yoo
- Research Center for Silver Science, Institute of Symbiotic Life-TECH, Yonsei University, Seoul, South Korea; Department of Food and Nutrition, National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, College of Human Ecology, Yonsei University, Seoul, South Korea
| | - Dahyoung Lee
- Department of Food and Nutrition, National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, College of Human Ecology, Yonsei University, Seoul, South Korea; Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, South Korea
| | - Jong Ho Lee
- Research Center for Silver Science, Institute of Symbiotic Life-TECH, Yonsei University, Seoul, South Korea; Department of Food and Nutrition, National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, College of Human Ecology, Yonsei University, Seoul, South Korea; Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, South Korea.
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6
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Huang Q, Lei H, Dong M, Tang H, Wang Y. Quantitative analysis of 10 classes of phospholipids by ultrahigh-performance liquid chromatography tandem triple-quadrupole mass spectrometry. Analyst 2019; 144:3980-3987. [DOI: 10.1039/c9an00676a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We have developed fast and sensitive label-free quantitation with normalization of acyl chain length to quantify 10 classes of phospholipids by UHPLC-MS.
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Affiliation(s)
- Qingxia Huang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Key Laboratory of Magnetic Resonance in Biological Systems
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Hehua Lei
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Key Laboratory of Magnetic Resonance in Biological Systems
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Manyuan Dong
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Key Laboratory of Magnetic Resonance in Biological Systems
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Huiru Tang
- State Key Laboratory of Genetic Engineering
- Zhongshan Hospital and School of Life Sciences
- Laboratory of Metabonomics and Systems Biology
- Human Phenome Institute
- Fudan University
| | - Yulan Wang
- Singapore Phenome Center
- Lee Kong Chian School of Medicine
- School of Biological Sciences
- Nanyang Technological University
- Singapore
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7
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Nelson GJ. The phospholipid composition of plasma in various mammalian species. Lipids 2012; 2:323-8. [PMID: 17805759 DOI: 10.1007/bf02532119] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/1967] [Indexed: 11/29/2022]
Abstract
Plasma phospholipids in several common mammalian species, including cat, cow, dog, goat, guinea pig, horse, pig, rabbit, rat, and sheep, were analyzed by using chromatographic and spectrophotometric methods. Lipids were extracted from plasma with chloroform-methanol 2ratio1 (v/v) and freed of nonlipid material by passage through a Sephadex column. The phospholipids were separated by two-dimensional thin-layer chromatography (TLC). Spots were identified by spray reagents, also by infrared spectrophotometry. The relative distribution of the phospholipids was determined by phosphorus analysis on the spot scraped off the TLC plate.Lecithin, lysolecithin, and sphingomyelin were found in the plasma of all species and accounted for more than 95% of the phospholipids except in the rodents. Lecithin was without exception the major phospholipid in plasma (56 to 83%). Lysolecithin and sphingomyelin content varied between 8 and 23% and 6 and 15% respectively. Phosphatidyl ethanolamine and phosphatidyl inositol were the only noncholine-containing phospholipids detected (detection limits 0.2%) in the plasma of these species. Together these compounds usually made up less than 5% of the total phospholipid. Rodents were an exception, especially the guinea pig, which had 21.7% phosphatidyl ethanolamine.
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Affiliation(s)
- G J Nelson
- Bio-Medical Division, Lawrence Radiation Laboratory, University of California, Livermore, California
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8
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Abstract
SummaryCows were given either a low-fat concentrate mixture or a concentrate mixture that contained 5 or 10% ‘stearic acid’ (85% pure) or 10% ‘palmitic acid’ (85% pure). The concentrate mixtures were given with a high roughage diet that supplied 4·4 kg of hay and 2·7 kg of sugar-beet pulp/day. Blood samples were taken from the cows on each dietary treatment and the plasma phospholipids were analysed.Phosphatidyl choline accounted for 70% of the plasma phospholipids when the cows were given the low-fat diet and about 86% of the plasma phospholipids when the cows were given the diets supplemented with the fatty acids. The inclusion of the fatty acids in the concentrate mixtures decreased the relative proportions of the plasma phosphatidyl ethanolamine, sphingomyelin and lysophosphatidyl choline but the relative proportion of the plasma phosphatidyl serine remained unchanged.When the diet was supplemented with stearic acid the concentrations of 18:0 and 16:0 in the phosphatidyl choline were unaltered but the concentration of 18:1 was increased and the concentration of 18:2 was decreased. When the diet was supplemented with palmitic acid the concentrations of 16:0 and 18:1 in the phosphatidyl choline were increased and the concentrations of 18:0 and 18:2 were decreased. In contrast, the inclusion of stearic acid in the diet increased the concentration of 18:0 in the phosphatidyl serine and decreased the concentration of 16:0; the concentrations of 18:1 and 18:2 were unchanged. The fatty acid composition of the plasma phosphatidyl ethanolamine was unaffected by dietary treatment. The effects of diet on the fatty acid compositions of the phosphatidyl choline and lysophosphatidyl choline were similar. Supplementation of the diet with stearic acid increased the concentrations of 18:0 and 18:1 in the plasma sphingomyelin and decreased the concentrations of 16:0 and 18:2. The addition of palmitic acid to the diet increased the concentration of 16:0 in the sphingomyelin but it decreased the concentrations of the other constituent fatty acids.
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9
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HEMAVATHY J, PRABHAKAR J, SEN D. Composition of Polar Lipids ofAlphonsoMango (Mangifera Indica) Kernel. J Food Sci 2006. [DOI: 10.1111/j.1365-2621.1987.tb06742.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wilkinson T, Aukema HM, Thomas LM, Holub BJ. Marked enrichment of the alkenylacyl subclass of plasma ethanolamine glycerophospholipid with eicosapentaenoic acid in human subjects consuming a fish oil concentrate. Lipids 1996; 31 Suppl:S211-5. [PMID: 8729121 DOI: 10.1007/bf02637078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Alteration in human platelet fatty acid levels with the consumption of fish oils containing eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) have been well documented, but changes in the fatty acid composition of plasma plasmalogenic phospholipid under similar circumstances have not been delineated. In the present study, subjects consumed the fish oil concentrate (MaxEPA) for 6 wk followed immediately by a 6-wk recovery period with no fish oil ingestion. Plasma total choline glycerophospholipid (GPC) and ethanolamine glycerophospholipid (GPE) subclasses isolated from blood samples obtained at 0, 3, 6, 9 and 12 wk of the experimental period were analyzed for fatty acid composition via thin-layer and gas-liquid chromatographic techniques. Consumption of fish oil for 3 or 6 wk significantly elevated the content of n-3 fatty acids while concomitantly decreasing n-6 fatty acid levels in plasma total GPC and in diacyl and alkenylacyl (plasmalogen) GPE. Alkenylacyl GPE exhibited the greatest alteration of both n-3 and n-6 fatty acid levels. Following 6 wk of supplementation with fish oil, EPA rose by 24.6 mol% in alkenylacyl GPE compared to increases of 6.7 and 7.1 mol% in diacyl GPE and total GPC, respectively. The increase in EPA (from 5.0 to 29.6 mol%) in plasma alkenylacyl GPE represents amongst the highest enrichment of EPA in any lipid yet reported in human subjects. DHA also rose by 8.0, 4.8, and 3.1 mol% in alkenylacyl GPE, diacyl GPE, and total GPC, respectively. Alkenylacyl GPE exhibited the greatest mol% decline (by 18.7 mol%) in arachidonic acid (AA, 20:4n-6) following 6 wk of fish oil supplementation. The corresponding decreases of AA in diacyl GPE and total GPC were 8.7 and 1.8 mol%, respectively. Following the 6 wk recovery period, n-3 and n-6 fatty acid levels had returned to pre-supplementation values. The marked enrichment of alkenylacyl GPE in n-3 fatty acids, especially EPA, may be of significance with respect to a unique role for this plasma phospholipid subclass in attenuating certain lipoprotein-mediated cardiovascular effects as observed with fish/fish oil consumption.
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Affiliation(s)
- T Wilkinson
- Department of Human Biology and Nutritional Sciences, University of Guelph, Ontario, Canada
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11
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Essien EU, Esenowo GJ, Akpanabiatu MI. Lipid composition of lesser known tropical seeds. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 1995; 48:135-140. [PMID: 8837872 DOI: 10.1007/bf01088309] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The lipid content and fatty acid profiles of four lesser known tropical seeds, Piper guineense, Chrysophyllum albidum, Garcinia kola and Dennettia tripetala, were determined. The total lipid content (g/kg dry weight) ranged between 31.8 and 68.9. The ranges of values for neutral lipids, triacylglycerol of neutral lipids, glycolipids and phospholipids were 17.3-58.0, 15.0-49.6, 3.0-7.2 and 3.7-11.2, respectively. The fatty acid profiles showed variation among different seeds. All the seeds contained substantial amounts of unsaturated fatty acids. Oleic and linoleic acids were the most abundant fatty acids. Dennettia tripetala and Piper guineense also contained moderate amounts of linolenic acid.
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Affiliation(s)
- E U Essien
- Department of Biochemistry, University of Calabar, Nigeria
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12
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Jürgens G, Fell A, Ledinski G, Chen Q, Paltauf F. Delay of copper-catalyzed oxidation of low density lipoprotein by in vitro enrichment with choline or ethanolamine plasmalogens. Chem Phys Lipids 1995; 77:25-31. [PMID: 7586089 DOI: 10.1016/0009-3084(95)02451-n] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Low density lipoprotein (LDL) isolated from human serum of different donors was enriched with plasmalogens and their diacyl analogs in order to investigate a possible effect of these phospholipids on the rate of lipid peroxidation in this lipoprotein. LDL was incubated with either vesicles of choline plasmalogen or phosphatidylcholine in presence of lipoprotein- deficient serum, or with liposomes of ethanolamine plasmalogen or phosphatidylethanolamine together with the non-specific phospholipid transfer protein isolated from beef liver. After re-isolation of LDL by ultracentrifugation, a dose-dependent incorporation of the exogenous phospholipids was obtained. Enrichment of LDL with choline plasmalogen resulted in a delay of the copper-catalyzed oxidation of LDL from five different donors. LDL from two donors was also enriched with diacylglycerophosphocholine which led to a delay of oxidation, but the protective effect was smaller than with choline plasmalogen. Enrichment of LDL from two additional donors with ethanolamine plasmalogen resulted in the strongest protection against oxidation, whereas, diacylglycerophospho-ethanolamine had little effect. The delay of the copper-catalyzed LDL oxidation may be due to a direct antioxidative action of the plasmalogens, which are partially degraded during the lag phase of oxidation, or to an indirect effect caused by alteration of the LDL surface in the presence of an excess of glycerophospholipids.
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Affiliation(s)
- G Jürgens
- Institut für Medizinische Biochemie, Karl-Franzens Universität Graz, Austria
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15
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16
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Affiliation(s)
- J. Hemavathy
- ; Discipline of Convenience Foods and Confectionery; Central Food Technological Research Institute; Mysore 570 013 India
| | - J. V. Prabhakar
- ; Discipline of Convenience Foods and Confectionery; Central Food Technological Research Institute; Mysore 570 013 India
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17
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Vance JE. Lipoproteins secreted by cultured rat hepatocytes contain the antioxidant 1-alk-1-enyl-2-acylglycerophosphoethanolamine. BIOCHIMICA ET BIOPHYSICA ACTA 1990; 1045:128-34. [PMID: 2116174 DOI: 10.1016/0005-2760(90)90141-j] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Monolayer cultures of rat hepatocytes have been examined for their ability to secrete ethanolamine plasmalogen as a component of nascent lipoproteins. In culture medium from these cells, ethanolamine plasmalogen comprises approx. 20-30% of total ethanolamine glycerophospholipids when measured either as phospholipid mass or by the incorporation of [1-3H]ethanolamine. An approximately equal distribution of the plasmalogen was found throughout all lipoprotein density fractions. The content of plasmalogen in whole rat serum, was 36% of total ethanolamine glycerophospholipids. In contrast, in rat liver and cultured hepatocytes the amount of ethanolamine plasmalogen was 5-fold lower than in serum or culture medium (approx. 5% of total ethanolamine phospholipids). Normal human plasma also contains ethanolamine plasmalogen in relatively large amounts (approx. 50% of total ethanolamine phospholipids). Thus, a major function of plasmalogen biosynthetic enzymes in liver may be the provision of ethanolamine plasmalogen for secretion into lipoproteins. Previous studies (e.g., Zoeller, R.A. et al. (1988) J. Biol. Chem. 263, 11590-11596) have suggested that ethanolamine plasmalogen may function as an antioxidant for the protection of lipid and protein membrane components against oxidation. Oxidized, but not native, low-density lipoprotein is rapidly taken up by macrophages with the formation of foam cells characteristic of atherosclerotic lesions (Steinbrecher, U.P. et al. (1984) Proc. Natl. Acad. Sci. USA 81, 3883-3887). Thus, the presence of plasmalogen as part of newly secreted lipoprotein particles may prevent their oxidation and subsequent uptake by macrophages.
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Affiliation(s)
- J E Vance
- Lipid and Lipoprotein Group, University of Alberta, Edmonton, Canada
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Robinson BS, Baisted DJ, Vance DE. Comparison of albumin-mediated release of lysophosphatidylcholine and lysophosphatidylethanolamine from cultured rat hepatocytes. Biochem J 1989; 264:125-31. [PMID: 2604708 PMCID: PMC1133555 DOI: 10.1042/bj2640125] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We have investigated the albumin-stimulated release from cultured rat hepatocytes of lysophosphatidylcholine derived from methylation of phosphatidylethanolamine and of lysophosphatidylethanolamine. In the absence [corrected] of albumin, neither lysophosphatidylethanolamine nor lysophosphatidylcholine was released into the culture medium. Albumin stimulated the accumulation of both phospholipids in the medium. After 2 h, 14.1 nmol of lysophosphatidylcholine and 2.0 nmol of lysophosphatidylethanolamine per 3 x 10(6) cells had accumulated in the medium. The rate of release of [3H]ethanolamine-labelled lysophosphatidylethanolamine was rapid in the first 2 h and then was decreased, whereas there was a 1 h lag in the release of [3H]ethanolamine-labelled lysophosphatidylcholine. This apparent lag probably reflected the time necessary for the synthesis of phosphatidylcholine from phosphatidylethanolamine in the cells. Albumin caused a decrease in labelled cellular lysophosphatidylethanolamine and lysophosphatidylcholine which only partially accounted for the accumulation of the labelled phospholipids in the medium. Albumin also stimulated the release of labelled phosphatidylethanolamine (almost 3-fold) and phosphatidylcholine (2-fold) into the medium. There was no detectable change in the labelling of the cellular pools of these phospholipids, most likely owing to the large amounts in the cells compared with the medium. The labelled lysophospholipids did not arise from catabolism of the parent phospholipid in the medium. Analysis of the fatty acids of the secreted lysophospholipids showed a preferential release of unsaturated fatty acyl species of lysophosphatidylcholine, whereas lysophosphatidylethanolamine contained similar amounts of saturated and unsaturated fatty acids.
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Affiliation(s)
- B S Robinson
- Department of Biochemistry, University of Alberta, Edmonton, Canada
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Fleming JK, Gadsden RH. Assessment of phosphatidylcholine, lysophosphatidylcholine, and sphingomyelin in human serum. Clin Biochem 1987; 20:249-56. [PMID: 3690827 DOI: 10.1016/s0009-9120(87)80007-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We describe a method for analyzing the choline-containing phospholipids, namely phosphatidylcholine, lysophosphatidylcholine, and sphingomyelin that is highly sensitive, easy to perform, and very reliable. The method employs enzymic hydrolysis of choline from these phospholipids by phospholipase D with subsequent oxidation of choline by choline oxidase and generation of hydrogen peroxide. Hydrogen peroxide is then reduced by peroxidase with p-hydroxy-phenylacetic acid acting as an oxygen acceptor to form a fluorescent product which is stable for at least 24 h without loss of linearity. The analysis requires a 5 microL sample volume and demonstrates linearity over a wide range (133 mumol/L-6.65 mmol/L). The CVs are less than 3%.
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Affiliation(s)
- J K Fleming
- College of Health Related Professions, Medical University of South Carolina, Charleston 29425
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Emken EA, Rohwedder WK, Adlof RO, Rakoff H, Gulley RM. Metabolism in humans of cis-12,trans-15-octadecadienoic acid relative to palmitic, stearic, oleic and linoleic acids. Lipids 1987; 22:495-504. [PMID: 3306237 DOI: 10.1007/bf02540365] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Mixtures of triglycerides containing deuterium-labeled hexadecanoic acid (16:0), octadecanoic acid (18:0), cis-9-octadecenoic acid (9c-18:1), cis-9,cis-12-octadecadienoic acid (9c, 12c-18:2) and cis-12,trans-15-octadecadienoic acid (12c,15t-18:2) were fed to two young-adult males. Plasma lipid classes were isolated from samples collected periodically over 48 hr. Incorporation and turnover of the deuterium-labeled fats in plasma lipids were followed by gas chromatography-mass spectrometry (GC-MS) analysis of the methyl ester derivatives. Absorption of the deuterated fats was followed by GC-MS analysis of chylomicron triglycerides isolated by ultracentrifugation. Results were the following: (i) endogenous fat contributed about 40% of the total fat incorporated into chylomicron triglycerides; (ii) elongation, desaturation and chain-shortened products from the deuterated fats were not detected; (iii) the polyunsaturated isomer 12c,15t-18:2 was metabolically more similar to saturated and 9c-18:1 fatty acids than to 9c,12c-18:2; (iv) relative incorporation of 9c,12c-18:2 into phospholipids did not increase proportionally with an increase of 9c,12c-18:2 in the mixture of deuterated fats fed; (v) absorption of 16:0, 18:0, 9c-18:1, 9c,12c-18:2 and 12c,15t-18:2 were similar; and (vi) data for the 1- and 2-acyl positions of phosphatidylcholine and for cholesteryl ester fractions reflected the known high specificity of phosphatidylcholine acyltransferase and lecithin:cholesteryl acyltransferase for 9c,12c-18:2. These results illustrate that incorporation of dietary fatty acids into human plasma lipid classes is selectively controlled and that incorporation of dietary 9c,12c-18:2 is limited. These results suggest that nutritional benefits of diets high in 9c,12c-18:2 may be of little value to normal subjects and that the 12c,15t-18:2 isomer in hydrogenated fat is not a nutritional liability at the present dietary level.
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Brosche T, Heckers H, Platt D, Summa JD. The effect of different fat supplemented diets on the erythrocyte ghosts and plasma lipid composition of geriatric subjects. Arch Gerontol Geriatr 1986; 5:83-95. [PMID: 3753092 DOI: 10.1016/0167-4943(86)90012-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/1985] [Revised: 01/20/1986] [Accepted: 01/23/1986] [Indexed: 01/07/2023]
Abstract
The responses of the lipid composition of erythrocyte ghosts and plasma phospholipid fatty acids of 20 female donors, aged older than 70 years, to different margarine and butter supplemented diets were investigated. On a low level of daily caloric intake (1900 kcal) there were no changes in phospholipid and cholesterol content of the red cell membranes, but statistically significant changes were found in erythrocyte and plasma phospholipid fatty acid patterns. These results demonstrate the influence of the fatty acid composition of the dietary fats with special reference to saturated, trans-isomeric monoene, and polyunsaturated acids.
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MILLER GJ, FIELD RA, AGBOOLA HA. LIPIDS IN SUBCUTANEOUS TISSUES AND LONGISSIMUS MUSCLES OF FEEDLOT AND GRASS-FED EWES. J FOOD QUALITY 1986. [DOI: 10.1111/j.1745-4557.1986.tb00853.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Pellat BP, Kohaut JC. Identification of phospholipids and neutral lipids in human gingival fluid. J Dent Res 1981; 60:1815-9. [PMID: 7024361 DOI: 10.1177/00220345810600101401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Gingival fluid was collected from children with a gingival index score of 2. Lipids were extracted, purified, and separated by thin-layer nanochromatography and identified. Lysophosphatidylcholines, sphingomyelins, phosphatidyl-cholines-ethanolamines-serines-inositols, polyglycerophosphatides, diphosphatidylglycerols, non-esterified fatty acids, mono- and di-glycerides, and cholesterols were observed. Serum origin of these lipids was possible, but enrichment by salivary bacterial or tissue lipids cannot be eliminated.
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Kuchmak M, Taylor L, Williams JH. Preparation of reference sera with desired levels of cholesterol and triglyceride. Clin Chim Acta 1981; 114:127-35. [PMID: 7197202 DOI: 10.1016/0009-8981(81)90386-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Simple methods for isolating cholesterol-rich protein fraction from human serum and triglyceride-rich fraction from hen egg yolk are presented. The isolated fractions are combined separately with small volumes of human serum in order to stabilize concentrated cholesterol and triglyceride. Precalculated volumes of concentrates are added to human serum in order to prepare reference sera with desired levels of cholesterol or triglyceride, or both. The reference sera resemble human serum in appearance, composition, and stability. Properties of preparations are discussed and stability of reference sera is illustrated.
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Jain SK, Majumdar S, Subrahmanyam D. Effect of phenylhydrazine on the plasma lipids of albino rat. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 1977; 298:75-7. [PMID: 882150 DOI: 10.1007/bf00510990] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The effect of phenylhydrazine hydrochloride on the lipid composition of plasma of albino rats have been investigated. The data revealed significant increase in the percentages of lysophosphatidyl choline and decrease in that of phosphatidyl choline. There was increase in the cholesterol ester content in the plasma. The assay of plasma lecithin-cholesterol acyltransferase (LCAT) activity showed a significant increase in its activity parallel to the above changes.
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Araki E, Ariga T, Murata T. Chemical ionization mass spectrometry of polyunsaturated fatty acids of human serum. BIOMEDICAL MASS SPECTROMETRY 1976; 3:261-4. [PMID: 1000055 DOI: 10.1002/bms.1200030602] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Polyunsaturated fatty acids of human serum were analysed by combination gas-liquid chromatography and chemical ionization mass spectrometry, using isobutane as the reagent gas. The method described yielded the molecular ion of long chain unsaturated fatty acids as the base peak; these were weak or unobservable in the corresponding electron impact mass spectra. In the chemical ionization mass spectrometry, the derivatization with trimethylsilyl ether was demonstrated to be useful for the location of the double bonds of unsaturated fatty acids. Applied toteh serum polyunsaturated fatty acids, these methods have given identification of C18:4, C20:4, C20:5, C22:4, C22:5omega-6, C22:5omega-3, and C22:6.
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Pennington JA, Davis CL. Effects of intraruminal and intra-abomasal additions of cod-liver oil on milk fat production in the cow. J Dairy Sci 1975; 58:49-55. [PMID: 1167554 DOI: 10.3168/jds.s0022-0302(75)84516-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Four Holstein cows were used in a modified switchback design to show the effect on milk-fat synthesis of (1) control diet, (2) 29.23, 3.92, 6.48, 30.65, 3.44 control diet plus 255 g/day of cod-liver oil in rumen, and (3) control diet plus 225 g/day of cod-liver oil in abomasum. Mean milk yield (kg/day), fat production (kg/day), and milk-fat percentage were (1) 21.87, .79, 3.63; (2) 22.99, .70, 3.05; and (3) 23.02, .75, 3.28. Compared to the post-treatment control period, only one cow decreased in milk-fat percentage on 3 while all cows decreased in milk-fat percentage on 2. Proportions of carbons 16:0, 16:1, 18:0, 18:1, 18:2, and trans-monoene fatty acids of the milk fat were (1) 30.31, 3.24, 10.15, 30.48, 2.59, 7.91; (2) 26.37; and (3) 26.30, 3.72, 10.56, 30.10, 2.96, 9.84. Proportions of rumen volatile fatty acids were not significantly affected by treatment. Proportions of carbons 16:0, 18:0, 18:1, 18:2, and 18:3 fatty acids in the rumen ingesta were (1) 17.28, 47.92, 21.71, 10.59, 2.46; (2) 19.55, 25.90, 37.21, 11.97, 5.39; and (3) 16.90, 50.80, 19.66, 9.11, and 3.23. Fatty acid composition of blood-serum phospholipids were affected by treatment.
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Anghileri LJ. Comparative study of the incorporation of 32P into the phospholipids of membranes from Novikoff hepatoma ascites cells and liver cells from normal and tumor bearing animals. ZEITSCHRIFT FUR KREBSFORSCHUNG UND KLINISCHE ONKOLOGIE. CANCER RESEARCH AND CLINICAL ONCOLOGY 1973; 80:301-6. [PMID: 4361199 DOI: 10.1007/bf00284365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Besterman EM, Gillett MP. A comparison of the effects of saturated and polyunsaturated lysolecithin fractions on platelet aggregation and erythrocyte sedimentation. Atherosclerosis 1972; 16:89-94. [PMID: 5069585 DOI: 10.1016/0021-9150(72)90011-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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34
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Chin HP. Sphingomyelin fatty acid composition in human twins. The effects of genotype, age, and sex. BIOCHIMICA ET BIOPHYSICA ACTA 1970; 218:407-16. [PMID: 5532630 DOI: 10.1016/0005-2760(70)90003-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Samuelsson K, Sameulsson B. Gas chromatographic and mass spectrometric studies of synthetic and naturally occurring ceramides. Chem Phys Lipids 1970; 5:44-79. [PMID: 4920306 DOI: 10.1016/0009-3084(70)90009-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Williams JH, Taylor L, Kuchmak M, Witter RF. Prepation of hypercholesterolemic and-or hypertriglyceridemic sera for lipid determinations. Clin Chim Acta 1970; 28:247-53. [PMID: 5463173 DOI: 10.1016/0009-8981(70)90087-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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37
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Winterbourn CC, Batt RD. The uptake of plasma fatty acids into human red cells and its relationship to cell age. BIOCHIMICA ET BIOPHYSICA ACTA 1970; 202:9-20. [PMID: 5417200 DOI: 10.1016/0005-2760(70)90213-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Panganamala RV, Buntine DW, Geer JC, Cornwell DG. Alk-1-enyl groups of glycerophosphatides from human aortic intima, plasma and erythrocytes. Chem Phys Lipids 1969; 3:401-4. [PMID: 5370226 DOI: 10.1016/0009-3084(69)90045-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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40
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Kuksis A, Stachnyk O, Holub B. Improved quantitation of plasma lipids by direct gas-liquid chromatography. J Lipid Res 1969. [DOI: 10.1016/s0022-2275(20)43027-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Williams JH, Kuchmak M, Witter RF. Quantitative determination of phospholipid classes in human serum by combined thin-layer chromatography and phosphorus analysis. Clin Chim Acta 1969; 25:447-52. [PMID: 4309646 DOI: 10.1016/0009-8981(69)90207-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Abstract
1. Groups of rabbits were given diets containing different proportions of butterfat and maize oil. After the animals had been given the experimental diets for 40 weeks the plasma phospho- lipids were fractionated and the fatty acid composition of each fraction was determined.2. Phosphatidyl choline and lysophosphatidyl choline accounted for about 75 and 12% respectively of the total plasma phospholipids: phosphatidyl ethanolamine, sphingomyelin and phosphatidyl serine accounted for only about 5.3, 5.0 and 2.6% respectively. Changes in the linoleic acid content of the diet had little effect on the relative proportions of the individual plasma phospholipids, but there was an over-all decrease in the concentration of total phospholipids in the plasma as the linoleic acid content of the diet was increased from 0.25 to 10.6%.3. When the diet contained 0.25 % linoleic acid, the linoleic acid:oleic acid ratio in the phosphatidyl choline (1.3) was similar to that in the phosphatidyl ethanolamine (1.2), but as the linoleic acid content of the diet was increased to 10.6% the linoleic acid:oleic acid ratio in the phosphatidyl choline increased to 48, whereas that in the phosphatidyl ethanolamine increased only to 2.2. Increases in the linoleic acid content of the diet resulted also in increases in the linoleic acid:oleic acid ratios in the phosphatidyl serine, lysophosphatidyl choline and sp hingomyelin.4. When the linoleic acid content of the diet was increased, the stearic acid:palmitic acid ratio in the phosphatidyl choline increased, whereas it decreased in the phosphatidyl ethanol- amine and remained relatively unaltered in the phosphatidyl serine. The stearic acid contents of the lysophosphatidyl choline and sphingomyelin were unaltered by dietary treatments, but the palmitic acid content of these two phospholipids decreased as the linoleic acid content of the diet increased.5. The results are discussed in terms of the metabolic relationships that exist between the various phospholipids.
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De Alvarez RR, Castellanos H, O'Leary DK, Jahed F. Fatty acid composition of serum and tissue lipids in benign and malignant gynecologic disease. Am J Obstet Gynecol 1969; 104:230-46. [PMID: 5781897 DOI: 10.1016/0002-9378(69)90670-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Samuelsson B, Samuelsson K. Separation and identification of ceramides derived from human plasma sphingomyelins. J Lipid Res 1969. [DOI: 10.1016/s0022-2275(20)42648-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Phillips GB, Dodge JT. Composition of phospholipids and of phospholipid fatty acids of human plasma. J Lipid Res 1967. [DOI: 10.1016/s0022-2275(20)38891-x] [Citation(s) in RCA: 86] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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van Golde L, Tomasi V, van Deenen L. Determination of molecular species of lecithin from erythrocytes and plasma. Chem Phys Lipids 1967. [DOI: 10.1016/0009-3084(67)90035-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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48
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Williams JH, Kuchmak M, Witter RF. Fatty acids in phospholipids isolated from human red cells. Lipids 1966; 1:391-8. [PMID: 17805646 DOI: 10.1007/bf02532542] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/1966] [Indexed: 10/23/2022]
Abstract
Total lipids of packed erythrocytes from healthy men 22 to 25 years old were extracted with chloroform-methanol mixture. Phospholipid classes were separated from neutral lipids and pigments on a silicic acid column. Phosphatidyl inositol (PI) was freed of its contaminants phosphatidyl ethanolamine (PE) and phosphatidyl serine (PS) on an aluminum oxide column. Additional silicic acid columns with modified solvent systems were needed for complete separation of other overlapped phospholipid classes. The identification of phospholipids in each eluted fraction was accomplished by TLC, using the appropriate spray tests and reference compounds, and confirmed on each of the isolated phospholipids by IR spectrophotometry.The total content of phospholipids as determined by phosphorus analysis was found to be 2.63 mg/ml of packed cells. These phospholipids were found to have the following composition (in per cent of total phospholipid): PI, 2.3; PE, 13.4; ethanolamine plasmalogen (EP), 14.5; PS, 3.9; lecithin (L), 34.2; choline plasmalogen (CP), 1.4; sphingomyelin (Sph), 28.4 and lysolecithin (LL), 1.7. The fatty acid composition of each phospholipid was determined by GLC. The average number of double bonds per fatty acid in the isolated phospholipids was found to be as follows: PI, 1.5; PE, 1.9; EP, 3.6; PS, 2.1; L, 1.0; CP, 2.0; Sph, 0.2 and LL, 0.5. The positional distribution of fatty acids in both L and PE was ascertained by selective enzymatic hydrolysis with phospholipase A. Saturated fatty acids of L were esterified predominantly in the alpha'-position, whereas in PE only 63.9 mole per cent of the saturated fatty acids were found in this position.
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Affiliation(s)
- J H Williams
- Lipid Standardization Laboratory, Heart Disease Control Unit, Laboratory Branch, Communicable Disease Center, Atlanta, Georgia
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