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Chen CJ, Chang CT, Lin ZR, Chiu WC, Liu JY, Ye ZC, Wang CJ, Shieh YT, Liu MY. Coupling capillary electrophoresis with mass spectrometry for the analysis of oxidized phospholipids in human high-density lipoproteins. Electrophoresis 2024; 45:333-345. [PMID: 37985935 DOI: 10.1002/elps.202300139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 11/22/2023]
Abstract
The oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine (ox-PAPC) products in human high-density lipoproteins (HDLs) were investigated by low-flow capillary electrophoresis-mass spectrometry (low-flow CE-MS). To accelerate the optimization, native PAPC (n-PAPC) standard was first analyzed by a commercial CE instrument with a photodiode array detector. The optimal separation buffer contained 60% (v/v) acetonitrile, 40% (v/v) methanol, 20 mM ammonium acetate, 0.5% (v/v) formic acid, and 0.1% (v/v) water. The selected separation voltage and capillary temperature were 20 kV and 23°C. The optimal CE separation buffer was then used for the low-flow CE-MS analysis. The selected MS conditions contained heated capillary temperature (250°C), capillary voltage (10 V), and injection time (1 s). No sheath gas was used for MS. The linear range for n-PAPC was 2.5-100.0 µg/mL. The coefficient of determination (R2 ) was 0.9918. The concentration limit of detection was 1.52 µg/mL, and the concentration limit of quantitation was 4.60 µg/mL. The optimal low-flow CE-MS method showed good repeatability and sensitivity. The ox-PAPC products in human HDLs were determined based on the in vitro ox-PAPC products of n-PAPC standard. Twenty-one ox-PAPC products have been analyzed in human HDLs. Uremic patients showed significantly higher levels of 15 ox-PAPC products than healthy subjects.
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Affiliation(s)
- Chao-Jung Chen
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan
- Department of Medical Research, Proteomics Core Laboratory, China Medical University Hospital, Taichung, Taiwan
| | - Chiz-Tzung Chang
- Department of Medicine, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Zhi-Ru Lin
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Wen-Chien Chiu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Jia-Yuan Liu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Zhi-Cheng Ye
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Chuan-Jun Wang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Ying-Tzu Shieh
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Mine-Yine Liu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
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2
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Chang CT, Chiu WC, Lin ZR, Shieh YT, Chang IT, Hsia MH, Wang CJ, Chen CJ, Liu MY. Determination of oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine products in human very low-density lipoproteins by nonaqueous low-flow capillary electrophoresis-mass spectrometry. J Chromatogr A 2023; 1687:463694. [PMID: 36502642 DOI: 10.1016/j.chroma.2022.463694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/29/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
A simple and fast low-flow capillary electrophoresis-mass spectrometry (low-flow CE-MS) method has been developed to analyze oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine (ox-PAPC) products in human very low-density lipoproteins (VLDLs). Native PAPC standard was analyzed to optimize the low-flow CE-MS method. The optimal CE conditions included separation buffer (60% (v/v) acetonitrile, 40% (v/v) methanol, 0.1% (v/v) water, 0.5% (v/v) formic acid, 20 mM ammonium acetate), sheath liquid (60% (v/v) acetonitrile, 40% (v/v) methanol, 0.1% (v/v) water, 20 mM ammonium acetate), separation voltage (20 kV), separation capillary internal diameter (i.d.) (75 µm), separation capillary temperature (23˚C) and sample injection time (6 s). The selected MS conditions included heated capillary temperature (250°C), capillary voltage (10 V), and injection time (1 s). Sheath gas was not used in this study. The total ion chromatograms (TICs), extracted ion chromatograms (EICs) and MS spectra of native PAPC standard and its in vitro oxidation products showed good repeatability and sensitivity. To determine the ox-PAPC products in human VLDLs, the EICs and MS spectra of VLDLs were compared with the in vitro oxidation products of native PAPC standard. For native PAPC standard, the measured linear range was 2.5 - 100.0 µg/mL, and the coefficients of determination (R2) was 0.9994. The concentration limit of detection (LOD) was 0.44 µg/mL, and the concentration limit of quantitation (LOQ) was 1.34 µg/mL. A total of 21 ox-PAPC products were analyzed for the VLDLs of healthy and uremic subjects. The levels of 7 short-chain and 5 long-chain ox-PAPC products on uremic VLDLs were significantly higher than healthy VLDLs. This simple low-flow CE-MS method might be a good alternative for LC-MS for the analysis of ox-PAPC products. Furthermore, it might also help scientists to expedite the search for uremic biomarkers.
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Affiliation(s)
- Chiz-Tzung Chang
- Department of Medicine, China Medical University Hospital, Taichung, Taiwan; College of Medicine, China Medical University, Taichung, Taiwan
| | - Wen-Chien Chiu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Zhi-Ru Lin
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Ying-Tzu Shieh
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - I-Ting Chang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Min-Hui Hsia
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Chuan-Jun Wang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
| | - Chao-Jung Chen
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan; Proteomics Core Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.
| | - Mine-Yine Liu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan.
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3
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Liu D, Wang H, Liang M, Nie Y, Liu Y, Yin M, Qiao X. Polymerized phosphonium ionic liquid functionalized silica microspheres as mixed-mode stationary phase for liquid chromatographic separation of phospholipids. J Chromatogr A 2021; 1660:462676. [PMID: 34814089 DOI: 10.1016/j.chroma.2021.462676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/28/2021] [Accepted: 11/04/2021] [Indexed: 11/26/2022]
Abstract
There is a large and growing demand for the vigorous development of new high performance liquid chromatography stationary phases in order to solve complex phospholipids separation. Herein, phosphonium-based ionic liquid trioctyl(allyl)phosphonium bromide ([P888Allyl]Br) was first synthesized with trioctylphosphine and allyl bromide. With [P888Allyl]Br as the polymerizable monomer, polymerized phosphonium ionic liquid functionalized silica microsphere (PIL@SiO2) was further synthetized via click chemistry reaction. Significantly, based on the inherent amphiphilic nature of the introduced [P888Allyl]Br, the packed PIL@SiO2 column displayed hydrophilic/hydrophobic mixed-mode retention mechanisms. The PIL@SiO2 column can achieve separation of nucleic acid bases and nucleosides, sulfonamides, amides and anilines with excellent selectivity in a shorter separation time. The column efficiency reached 109,700 N/m for 2-iodoacetamide. One of the important characteristics of the PIL@SiO2 column is that both phospholipid classes and species can be efficiently separated via the same column, outperforming that of the commercial amino column. Furthermore, the application potential of the PIL@SiO2 column was further verified via separation of phospholipids extracted from soy lecithin. The proposed PIL@SiO2 column provides a promising candidate for separation of complex phospholipid samples.
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Affiliation(s)
- Delu Liu
- College of Pharmaceutical Sciences, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China
| | - Haiyan Wang
- College of Pharmaceutical Sciences, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China
| | - Mengying Liang
- College of Pharmaceutical Sciences, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China
| | - Yangyang Nie
- College of Pharmaceutical Sciences, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China
| | - Yanli Liu
- College of Pharmaceutical Sciences, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China
| | - Mingyuan Yin
- Key Laboratory of Public Health Safety of Hebei Province, College of Public Health, Hebei University, Baoding 071002, China
| | - Xiaoqiang Qiao
- College of Pharmaceutical Sciences, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China.
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4
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Phospholipid and n-alkane composition, anti-α-glucosidase and anti-cyclooxygenase activities of milk thistle oil. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03732-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Park JY, Shrestha SA, Cha S. Isomer separation and analysis of amphiphilic polysialogangliosides using reversed-phase liquid chromatography-mass spectrometry. J Sep Sci 2021; 44:1824-1832. [PMID: 33586325 DOI: 10.1002/jssc.202001248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 11/07/2022]
Abstract
Gangliosides are amphiphilic, acidic glycosphingolipids possessing one or more sialic acid residues and several isobaric structural isomers with different abundances and bioactivities. Therefore, the distinction between these isomers is crucial for their proper profiling. Although liquid chromatography-mass spectrometry has been successfully employed for this purpose, the distinction process can still be improved, particularly regarding liquid chromatography. Recently, a reversed-phase liquid chromatography method that could separate disialoganglioside isomers was reported; however, the distinction of trisialoganglioside isomers using reversed-phase liquid chromatography has not been demonstrated. Here, we investigated the practicality of a reversed-phase liquid chromatography with an octadecylsilane column for separating polysialoganglioside isomers and successfully achieved the isomer separation of disialogangliosides and trisialogangliosides for the first time. We also confirmed several crucial factors in the mobile-phase composition, which affect the differential retention and mass spectral response of the isomers. First, an organic modifier, acetonitrile, exhibited superior selectivity against polysialogangliosides over methanol. Second, ammonium bicarbonate was the best ammonium salt additive among those tested, in terms of the separation efficiency and mass spectral response. Third, as the ammonium salt concentration increased, the negative electrospray ionization response was extensively suppressed, and the retention of gangliosides increased.
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Affiliation(s)
- Jun Young Park
- Department of Chemistry, Dongguk University, Seoul, Republic of Korea
| | | | - Sangwon Cha
- Department of Chemistry, Dongguk University, Seoul, Republic of Korea
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6
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Yadava SK, Basu SM, Chauhan M, Sharma K, Pradhan A, V R, Giri J. Low temperature, easy scaling up method for development of smart nanostructure hybrid lipid capsules for drug delivery application. Colloids Surf B Biointerfaces 2020; 190:110927. [PMID: 32169777 DOI: 10.1016/j.colsurfb.2020.110927] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 01/18/2020] [Accepted: 03/01/2020] [Indexed: 10/24/2022]
Abstract
Lipid Nanocapsules (LNCs) have been used for drug delivery in cells and animal models for several years. LNCs with unique physicochemical properties for favorable biorecognition, biocompatibility and stimuli responsive (pH/temperature etc.) properties i.e., smart-LNCs, are most promising for future nanomedicine applications. However, conventional phase inversion temperature (PIT) method of LNCs preparation may not be suitable for the fabrication of thermally labile drug loaded LNCs and smart-LNCs. Herein, we report for the first time, a novel low temperature (LT) method for the preparation of LNCs (including smart-LNCs of size 25-150 nm), hereafter, named as nanostructure hybrid lipid capsules (nHLCs), comprising safe excipients such as oil (Labrafac™ PG), surfactant (Kolliphor® HS 15, Brij® S100), and lipid (Lipoid S-75, Lipoid S PC-3, Lipoid PE 18:1/18:1, Lipoid PC 16:0/16:0 etc.). Effects of process parameters on the physicochemical properties of nHLCs were probed to optimize the process. Ternary phase diagram shows that our method allows for great flexibility in the formation of nHLCs with tailored size and composition. This method resulted in drug loaded (regorafenib used as model drug) nHLCs with 95 % encapsulation efficiency and sustained release profile at 37 °C. The drug loaded nHLCs (as prepared or in lyophilized form) has excellent storage stability at 4 °C (for more than one month) as well as biocompatibility similar to that of LNCs prepared by PIT method. Our novel LT method of LNCs (i.e. nHLCs) preparation is a generic method for the development of drug loaded (including thermally labile) and smart-LNCs for future nanomedicine applications.
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Affiliation(s)
- Sunil Kumar Yadava
- Department of Biomedical Engineering, Indian Institute of Technology, Hyderabad, India
| | - Suparna Mercy Basu
- Department of Biomedical Engineering, Indian Institute of Technology, Hyderabad, India
| | - Meenakshi Chauhan
- Department of Biomedical Engineering, Indian Institute of Technology, Hyderabad, India
| | - Kshipra Sharma
- Interdisciplinary Research Institute of Grenoble, Univ. Grenoble Alpes, France
| | - Arpan Pradhan
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Bombay, India
| | - Remya V
- Department of Biomedical Engineering, Indian Institute of Technology, Hyderabad, India
| | - Jyotsnendu Giri
- Department of Biomedical Engineering, Indian Institute of Technology, Hyderabad, India.
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7
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Liu YF, Yin FW, Liu YX, Wu ZX, Zhang J, Zhao Q, Rakariyatham K, Zhou DY. Characterization of Glycerophospholipid Molecular Species in Two Species of Arcidaes ( Scapharca subcrenata and Scapharca broughtonii). JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2019. [DOI: 10.1080/10498850.2019.1595801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yan-Fei Liu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
| | - Fa-Wen Yin
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
| | - Yu-Xin Liu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
- National Engineering Research Center of Seafood, Dalian, PR China
| | - Zi-Xuan Wu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
| | - Jing Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
| | - Qi Zhao
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
| | - Kanyasiri Rakariyatham
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
- National Engineering Research Center of Seafood, Dalian, PR China
| | - Da-Yong Zhou
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, PR China
- National Engineering Research Center of Seafood, Dalian, PR China
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8
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Poinsot V, Ta HY, Meang VO, Perquis L, Gavard P, Pipy B, Couderc F. A digest of capillary electrophoretic methods applied to lipid analyzes. Electrophoresis 2018; 40:190-211. [DOI: 10.1002/elps.201800264] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/27/2018] [Accepted: 07/27/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Véréna Poinsot
- Laboratoire des IMRCP; Université de Toulouse, Université Toulouse III - Paul Sabatier; Toulouse France
| | - Hai Yen Ta
- Laboratoire des IMRCP; Université de Toulouse, Université Toulouse III - Paul Sabatier; Toulouse France
| | - Varravaddheay Ong Meang
- Laboratoire des IMRCP; Université de Toulouse, Université Toulouse III - Paul Sabatier; Toulouse France
| | - Lucie Perquis
- Laboratoire des IMRCP; Université de Toulouse, Université Toulouse III - Paul Sabatier; Toulouse France
| | - Pierre Gavard
- Laboratoire des IMRCP; Université de Toulouse, Université Toulouse III - Paul Sabatier; Toulouse France
| | - Bernard Pipy
- Laboratoire Pharma DEV; Université de Toulouse, Université Toulouse III - Paul Sabatier; Toulouse France
| | - François Couderc
- Laboratoire des IMRCP; Université de Toulouse, Université Toulouse III - Paul Sabatier; Toulouse France
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9
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Jurowski K, Kochan K, Walczak J, Barańska M, Piekoszewski W, Buszewski B. Analytical Techniques in Lipidomics: State of the Art. Crit Rev Anal Chem 2017; 47:418-437. [PMID: 28340309 DOI: 10.1080/10408347.2017.1310613] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Current studies related to lipid identification and determination, or lipidomics in biological samples, are one of the most important issues in modern bioanalytical chemistry. There are many articles dedicated to specific analytical strategies used in lipidomics in various kinds of biological samples. However, in such literature, there is a lack of articles dedicated to a comprehensive review of the actual analytical methodologies used in lipidomics. The aim of this article is to characterize the lipidomics methods used in modern bioanalysis according to the methodological point of view: (1) chromatography/separation methods, (2) spectroscopic methods and (3) mass spectrometry and also hyphenated methods. In the first part, we discussed thin layer chromatography (TLC), high-pressure liquid chromatography (HPLC), gas chromatography (GC) and capillary electrophoresis (CE). The second part includes spectroscopic techniques such as Raman spectroscopy (RS), Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR). The third part is a synthetic review of mass spectrometry, matrix-assisted laser desorption/ionization (MALDI), hyphenated methods, which include liquid chromatography-mass spectrometry (LC-MS), gas chromatography-mass spectrometry (GC-MS) and also multidimensional techniques. Other aspects are the possibilities of the application of the described methods in lipidomics studies. Due to the fact that the exploration of new methods of lipidomics analysis and their applications in clinical and medical studies are still challenging for researchers working in life science, we hope that this review article will be very useful for readers.
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Affiliation(s)
- Kamil Jurowski
- a Kraków Higher School of Health Promotion , Krakow , Poland
| | - Kamila Kochan
- b Jagiellonian Centre for Experimental Therapeutics (JCET) , Jagiellonian University in Cracow , Cracow , Poland.,c Centre for Biospectroscopy and School of Chemistry , Monash University , Clayton , Victoria , Australia
| | - Justyna Walczak
- d Department of Environmental Chemistry and Bioanalytics , Faculty of Chemistry, Nicolaus Copernicus University , Torun , Poland
| | - Małgorzata Barańska
- b Jagiellonian Centre for Experimental Therapeutics (JCET) , Jagiellonian University in Cracow , Cracow , Poland.,e Department of Chemical Physics, Faculty of Chemistry , Jagiellonian University in Cracow , Cracow , Poland
| | - Wojciech Piekoszewski
- f Department of Analytical Chemistry, Faculty of Chemistry , Jagiellonian University in Cracow , Cracow , Poland.,g School of Biomedicine , Far Eastern Federal University , Vladivostok , Russia
| | - Bogusław Buszewski
- d Department of Environmental Chemistry and Bioanalytics , Faculty of Chemistry, Nicolaus Copernicus University , Torun , Poland
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10
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Quadrupole time-of-flight mass spectrometry analysis of glycerophospholipid molecular species in the two halophyte seed oils: Eryngium maritimum and Cakile maritima. Food Chem 2016; 213:319-328. [DOI: 10.1016/j.foodchem.2016.06.083] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 05/27/2016] [Accepted: 06/24/2016] [Indexed: 11/19/2022]
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11
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Wen B, Wu Y, Zhang H, Liu Y, Hu X, Huang H, Zhang S. The roles of protein and lipid in the accumulation and distribution of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) in plants grown in biosolids-amended soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 216:682-688. [PMID: 27381874 DOI: 10.1016/j.envpol.2016.06.032] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 06/08/2016] [Accepted: 06/15/2016] [Indexed: 06/06/2023]
Abstract
The roles of protein and lipid in the accumulation and distribution of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) in seven species of plants from biosolids-amended soils were investigated. The PFOS and PFOA root concentration factors (Croot/Csoil) ranged from 1.37 to 4.68 and 1.69 to 10.3 (ng/groot)/(ng/gsoil), respectively, while the translocation factors (Cshoot/Croot) ranged from 0.055 to 0.16 and 0.093 to 1.8 (ng/gshoot)/(ng/groot), respectively. The PFOS and PFOA accumulations in roots correlated positively with root protein contents (P < 0.05), while negatively with root lipid contents (P < 0.05). These suggested the promotion effects of protein and inhibition effects of lipid on root uptake. The translocation factors correlated positively with the ratios between protein contents in shoots to those in roots (P < 0.05), showing the importance of protein on PFOS and PFOA translocation. This study is the first to reveal the different roles of protein and lipid in the accumulation and distribution of PFOS and PFOA in plants.
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Affiliation(s)
- Bei Wen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Yali Wu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Hongna Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Yu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Xiaoyu Hu
- Beijing Center for Disease Prevention and Control, Beijing, 100031, China
| | - Honglin Huang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Shuzhen Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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12
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Buré C, Solgadi A, Yen-Nicolaÿ S, Bardeau T, Libong D, Abreu S, Chaminade P, Subra-Paternault P, Cansell M. Electrospray mass spectrometry as a tool to characterize phospholipid composition of plant cakes. EUR J LIPID SCI TECH 2016. [DOI: 10.1002/ejlt.201500345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Corinne Buré
- Centre de Génomique Fonctionnelle; CBMN, UMR 5248 CNRS, INP; University of Bordeaux; Bordeaux France
| | - Audrey Solgadi
- Université Paris Sud, SAMM, UMS IPSIT; Chatenay-Malabry France
| | | | - Tiphaine Bardeau
- University of Bordeaux, CBMN, UMR 5248; Pessac France
- CNRS, CBMN, UMR 5248; Pessac France
- Bordeaux INP, CBMN, UMR 5248; Pessac France
| | - Danielle Libong
- Université Paris Sud, SAMM, UMS IPSIT; Chatenay-Malabry France
- Université Paris Sud, LipSys; Chatenay-Malabry France
| | - Sonia Abreu
- Université Paris Sud, LipSys; Chatenay-Malabry France
| | - Pierre Chaminade
- Université Paris Sud, SAMM, UMS IPSIT; Chatenay-Malabry France
- Université Paris Sud, LipSys; Chatenay-Malabry France
| | | | - Maud Cansell
- University of Bordeaux, CBMN, UMR 5248; Pessac France
- CNRS, CBMN, UMR 5248; Pessac France
- Bordeaux INP, CBMN, UMR 5248; Pessac France
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13
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Analysis of phosphate and phosphate containing headgroups enzymatically cleaved from phospholipids of Bacillus subtilis by capillary electrophoresis. Anal Bioanal Chem 2015; 407:7215-20. [DOI: 10.1007/s00216-015-8885-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 06/19/2015] [Accepted: 06/26/2015] [Indexed: 01/20/2023]
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14
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Yamamura T, Kitagawa S, Ohtani H. Separation of linear synthetic polymers in non-aqueous capillary zone electrophoresis using cationic surfactant. J Chromatogr A 2015; 1393:122-7. [DOI: 10.1016/j.chroma.2015.03.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 03/10/2015] [Accepted: 03/15/2015] [Indexed: 11/29/2022]
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15
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Trabelsi H, Renaud J, Mayer P, Boukhchina S. Triacylglycerol and Glycerophospholipid Identification and Accumulation During Ripening of Pistacia lentiscus L. (Lentisc) Fruit. J AM OIL CHEM SOC 2014. [DOI: 10.1007/s11746-014-2453-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Montealegre C, Verardo V, Luisa Marina M, Caboni MF. Analysis of glycerophospho- and sphingolipids by CE. Electrophoresis 2014; 35:779-92. [DOI: 10.1002/elps.201300534] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 11/19/2013] [Accepted: 11/19/2013] [Indexed: 12/21/2022]
Affiliation(s)
- Cristina Montealegre
- Department of Analytical Chemistry; Faculty of Chemistry; University of Alcalá; Alcalá de Henares Madrid Spain
| | - Vito Verardo
- Inter-Departmental Centre for Agri-Food Industrial Research (CIRI Agroalimentare); University of Bologna; Piazza Goidanich Cesena (FC) Italy
| | - María Luisa Marina
- Department of Analytical Chemistry; Faculty of Chemistry; University of Alcalá; Alcalá de Henares Madrid Spain
| | - Maria Fiorenza Caboni
- Inter-Departmental Centre for Agri-Food Industrial Research (CIRI Agroalimentare); University of Bologna; Piazza Goidanich Cesena (FC) Italy
- Department of Agricultural and Food Sciences; Alma Mater Studiorum-Università di Bologna; Piazza Goidanich Cesena (FC) Italy
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17
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Montealegre C, Sánchez-Hernández L, Crego AL, Marina ML. Determination and characterization of glycerophospholipids in olive fruit and oil by nonaqueous capillary electrophoresis with electrospray-mass spectrometric detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:1823-1832. [PMID: 23379923 DOI: 10.1021/jf304357e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A nonaqueous capillary electrophoresis method with electrospray-mass spectrometric detection was developed to study the glycerophospholipid fraction in olive fruit and olive oil samples. In olive fruits, where the information available about the phospholipid fraction was very scarce, results obtained in this work allowed us to complete and improve this knowledge. The glycerophospholipid fraction of the olive fruit samples analyzed was composed of phosphatidylcholine (PC), phosphatidylethanolamine (PE), lysophosphatidylethanolamine (lyso-PE), phosphatidylinositol (PI), phosphatidic acid (PA), lysophosphatidic acid (lyso-PA), and phosphatidylglycerol (PG). Differences in the relative abundance of the glycerophospholipid classes determined were observed as a function of the botanical and geographical origin of the olive fruits analyzed. Interestingly, the olive stone and pulp analyzed also showed different glycerophospholipid compositions. For olive oil, five glycerophospholipids (lyso-PA, PC, PE, lyso-PE, and PG) were detected. Finally, identification of the main molecular species in the different glycerophospholipid classes for the olive fruit samples analyzed was accomplished by tandem mass spectrometric experiments and information from the literature.
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Affiliation(s)
- C Montealegre
- Department of Analytical Chemistry, University of Alcalá, Alcalá de Henares, Madrid, Spain
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18
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LC–ESI–QTOF–MS, MS/MS Analysis of Glycerophospholipid Species in Three Tunisian Pistacia lentiscus Fruit Populations. J AM OIL CHEM SOC 2013. [DOI: 10.1007/s11746-013-2203-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Aldehyde Oxidase Activity and Stability in Water-Miscible Organic Solvents. Appl Biochem Biotechnol 2013; 169:901-10. [DOI: 10.1007/s12010-012-0036-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 12/13/2012] [Indexed: 10/27/2022]
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20
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Herchi W, Sakouhi F, Khaled S, Xiong Y, Boukhchina S, Kallel H, Curtis JM. Characterisation of the glycerophospholipid fraction in flaxseed oil using liquid chromatography–mass spectrometry. Food Chem 2011; 129:437-442. [DOI: 10.1016/j.foodchem.2011.04.096] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 03/01/2011] [Accepted: 04/28/2011] [Indexed: 10/18/2022]
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21
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Yang YL, Chong CP, Tsai MH, Liu MY. Analysis of in vitro oxidized human LDL phospholipids by solid-phase extraction and micellar electrokinetic capillary chromatography. Biomed Chromatogr 2011; 26:441-8. [PMID: 22392513 DOI: 10.1002/bmc.1684] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2011] [Accepted: 06/21/2011] [Indexed: 11/11/2022]
Abstract
Phospholipids of in vitro oxidized human low-density lipoproteins (LDL) were separated by two different solid-phase extraction (SPE) methods. One of the two methods was designed to test the effects of gradient elution. This SPE method isolated more phospholipids from in vitro oxidized LDL than the other one according to the results of liquid chromatography and electrospray ionization mass spectrometry (LC ESI-MS) analysis. A micellar electrokinetic capillary chromatography (MEKC) method was also used to analyze phospholipids separated by SPE. The results of MEKC and LC ESI-MS were consistent for the major phospholipid classes, including PC, lysoPC, PE, PI and PS. The MEKC profiles showed significant differences for native and oxidized LDL phospholipids. Therefore, the unique combination of SPE and MEKC methods showed dramatic distinctions between native and in vitro oxidized human LDL phospholipids. The combination also shows great potential for rapid analysis of in vivo oxidized human LDL phospholipids in the future.
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Affiliation(s)
- Ying-Ling Yang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan
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22
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Jang R, Kim KH, Zaidi SA, Cheong WJ, Moon MH. Analysis of phospholipids using an open-tubular capillary column with a monolithic layer of molecularly imprinted polymer in capillary electrochromatography-electrospray ionization-tandem mass spectrometry. Electrophoresis 2011; 32:2167-73. [DOI: 10.1002/elps.201100205] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 05/04/2011] [Accepted: 05/05/2011] [Indexed: 11/11/2022]
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23
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Gotti R. Capillary electrophoresis of phytochemical substances in herbal drugs and medicinal plants. J Pharm Biomed Anal 2011; 55:775-801. [DOI: 10.1016/j.jpba.2010.11.041] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 11/22/2010] [Accepted: 11/26/2010] [Indexed: 11/29/2022]
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24
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25
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Chong CP, Lin TY, Chang CL, Yang YL, Tsai MH, Yu YS, Liu MY. Micellar electrokinetic chromatography profiles of human high-density lipoprotein phospholipids. Electrophoresis 2011; 32:1241-51. [DOI: 10.1002/elps.201000474] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 01/17/2011] [Accepted: 01/17/2011] [Indexed: 01/20/2023]
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26
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TENG H, YUAN BQ, YOU TY. Recent Advances in Application of Nonaqueous Capillary Electrophoresis. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.1016/s1872-2040(09)60078-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Separation of open-cage fullerenes using nonaqueous capillary electrophoresis. J Chromatogr A 2010; 1217:4471-5. [DOI: 10.1016/j.chroma.2010.02.085] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2010] [Revised: 02/24/2010] [Accepted: 02/26/2010] [Indexed: 11/18/2022]
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28
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29
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Simultaneous determination of atropine, anisodamine, and scopolamine in plant extract by nonaqueous capillary electrophoresis coupled with electrochemiluminescence and electrochemistry dual detection. J Chromatogr A 2009; 1217:171-4. [PMID: 19931863 DOI: 10.1016/j.chroma.2009.11.008] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 10/24/2009] [Accepted: 11/02/2009] [Indexed: 11/23/2022]
Abstract
A rapid and simple method was demonstrated for the analysis of atropine, anisodamine, and scopolamine by nonaqueous capillary electrophoresis (NACE) coupled with electrochemiluminescence (ECL) and electrochemistry (EC) dual detection. The mixture of acetonitrile (ACN) and 2-propanol containing 1M acetic acid (HAc), 20mM sodium acetate (NaAc), and 2.5mM tetrabutylammonium perchlorate (TBAP) was used as the electrophoretic buffer. Although a short capillary of 18cm was used, the decoupler was not needed and the separation efficiency was good. The linear ranges of atropine, anisodamine, and scopolamine were 0.5-50, 5-2000, and 50-2000microM, respectively. For six replicate measurements of 100microM scopolamine, 15microM atropine, and 200microM anisodamine, the RSDs of ECL intensity, EC current, and migration time were less than 3.6%, 4.5%, and 0.3%, respectively. In addition, because the organic buffer was used, the working electrode (Pt) was not easily fouled and did not need reactivation. The method was also applied for the determination of these three alkaloids in Flos daturae extract.
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Rashidi MR, Soruraddin MH, Taherzadeh F, Jouyban A. Catalytic activity and stability of xanthine oxidase in aqueous-organic mixtures. BIOCHEMISTRY (MOSCOW) 2009; 74:97-101. [DOI: 10.1134/s0006297909010155] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Otieno AC, Quainoo EW, Mwongela SM. Metal cations for the determination of fluorescent phosphoinositides by capillary electrophoresis. J Sep Sci 2008; 31:3894-901. [DOI: 10.1002/jssc.200800412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Otieno AC, Mwongela SM. Capillary electrophoresis-based methods for the determination of lipids--a review. Anal Chim Acta 2008; 624:163-74. [PMID: 18706322 DOI: 10.1016/j.aca.2008.06.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2008] [Revised: 06/12/2008] [Accepted: 06/17/2008] [Indexed: 01/08/2023]
Abstract
Capillary electrophoresis (CE) is a high-resolution technique for the separation of complex biological and chemical mixtures. CE continues to emerge as a powerful tool in the determination of lipids. Here we review the analytical potential of CE for the determination of a wide range of lipids. The different classes of lipids are introduced, and the different modes of CE and optimization methods for the separation of lipids are described. The advantages and disadvantages of the different modes of CE compared to traditional methods like gas chromatography (GC) and liquid chromatography (LC) in the determination of lipids are discussed. Finally, the potential of CE in the determination of lipids in the future is illustrated.
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Affiliation(s)
- Anthony C Otieno
- Department of Chemistry, Kent State University, Kent, OH 44242, USA
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33
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Varga A, Nilsson S. Nonaqueous capillary electrophoresis for analysis of the ethanol consumption biomarker phosphatidylethanol. Electrophoresis 2008; 29:1667-71. [DOI: 10.1002/elps.200700548] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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34
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Gao F, Zhang Z, Fu X, Li W, Wang T, Liu H. Analysis of phospholipids by NACE with on-line ESI-MS. Electrophoresis 2007; 28:1418-25. [PMID: 17372939 DOI: 10.1002/elps.200600533] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A hyphenated method of nonaqueous capillary electrophoresis coupled to electrospray ionization mass spectrometry (NACE-ESI-MS) is described for the simultaneous analysis of phospholipids. The best results were obtained with a mixed solution of methanol/ACN (40:60 v/v) containing 20 mM ammonium acetate and 0.5% acetic acid, under the applied voltage of 30 kV and capillary temperature of 25 degrees C. ESI-MS measurements were performed in the negative mode with methanol/ACN (40:60 v/v) containing 50 mM ammonium acetate as sheath liquid at a flow rate of 2 microL/min. Different phospholipid classes have been successfully separated within 16 min, and the molecular species of every single class have been identified by using MS(2) or MS(3), which generates characteristic fragments through CID. The developed method has been applied to analyze the phospholipids extracted from rat peritoneal surface and the molecular species of phospholipid classes are presented.
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Affiliation(s)
- Fei Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China
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35
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Ho YL, Chiu JH, Wu CY, Liu MY. Separation and determination of in vitro oxidized phospholipids by capillary zone electrophoresis. Anal Biochem 2007; 367:210-8. [PMID: 17553450 DOI: 10.1016/j.ab.2007.04.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2007] [Revised: 04/10/2007] [Accepted: 04/17/2007] [Indexed: 11/25/2022]
Abstract
A simple capillary zone electrophoresis (CZE) method was used to determine in vitro oxidized phosphatidyl choline (ox-PC). To optimize the capillary electrophoresis (CE) conditions, organic buffer additives, buffer ionic strength, buffer pH, and applied voltage were examined. The optimal CE separation buffer chosen was an aqueous-organic solvent system containing 10% sodium phosphate buffer (5 mM, pH 7.40), 80% methanol, and 10% acetonitrile. One major peak with a small shoulder was found for phosphatidyl choline (PC), whereas one major peak and a complex region containing several lower-mobility peaks were found for ox-PC. The lower-mobility species of ox-PC has high levels of conjugated dienes characterized by strong absorbance at 234 nm. The electropherograms of PC and ox-PC were significantly different and highly reproducible. The intensities of lower-mobility species decreased significantly when the antioxidant vitamin C concentration was increased from 6 to 600 microM. This study provides a simple CZE method to differentiate in vitro oxidized from nonoxidized PC molecular species.
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Affiliation(s)
- Yu-Ling Ho
- Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan
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36
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Chu BL, Guo BY, Peng Z, Wang Z, Guo G, Lin JM. Studies on degradation of imazalil enantiomers in soil using capillary electrophoresis. J Sep Sci 2007; 30:923-9. [PMID: 17536738 DOI: 10.1002/jssc.200600447] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A scheme was demonstrated to elucidate the degradation behaviors of the two enantiomers of the fungicide imazalil in soil using cyclodextrin-modified capillary zone electrophoresis. The separation buffer was 50 mmol/L NaH2PO4, 5 mmol/L (NH4)H2PO4, and 5 mmol/L beta-cyclodextrin (pH 3.0). The limits of detection of this CE method were 0.24 and 0.26 microg/mL for (-)- and (+)-imazalil, respectively. Five different soil conditions were investigated in laboratory microcosms: under sunlight; in darkness; under UV irradiation; in sterilized soil; and in soil with wheat planted in it. Radiation, microorganisms, and uptake by wheat benefited the degradation of imazalil in this study. The half-lives (t1/2) of imazalil in soil under the above conditions were 20, 30.5, 11, 27.5, and 21.5 days, respectively. The degradation rate of imazalil in soil under the five different sets of conditions decreased in the order: UV irradiation > sunlight > soil with wheat planted in it > sterilized soil > soil kept in darkness. Imazalil in soil (pH 8.2, slightly alkaline) collected in the suburbs showed non-enantioselective degradation.
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Affiliation(s)
- Bao-Lin Chu
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, China
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37
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Mwongela SM, Lee K, Sims CE, Allbritton NL. Separation of fluorescent phosphatidyl inositol phosphates by CE. Electrophoresis 2007; 28:1235-42. [PMID: 17366487 DOI: 10.1002/elps.200600594] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Phosphatidyl inositol 4,5-bisphosphate (PIP2) and phosphatidyl inositol 3,4,5-trisphosphate (PIP3) labeled with 4,4-difluoro-5,7-dimethyl-4-bora-3a,4a-diaza-s-indacene-3-propionic acid (BODIPY FL) on the acyl chain or a phosphatidyl ethanolamine head group were separated by CE with LIF detection. Several methods and capillary-coating procedures were tested for the separation of these phosphatidyl inositol phosphates (PIPs) at 20 degrees C. Separation of the PIPs in less than 20 min with excellent resolution was achieved using a buffer containing sodium deoxycholate (SDC), 1-propanol, MgCl2 and the polymer coating reagent, EOTrol LR. The efficiency of the optimized method was as high as 1.3x10(5) plates. The dependence of the separation on the concentration of 1-propanol, SDC, and MgCl2 was determined. The separation of PIP2 and PIP3 was primarily due to differential binding of the lipids to Mg2+ rather than to different solubilities in the micellar phase. The role of the SDC was to prevent adsorption of the hydrophobic lipids to the capillary wall and thus enhance the efficiency. The fluorescent PIPs are of value for both in vitro and in vivo assays of phospholipid metabolism. In particular, the use of these lipids with the optimized capillary-based separation will be of utility for drug screening as well as cell-based assays.
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Affiliation(s)
- Simon M Mwongela
- Department of Physiology and Biophysics, University of California, Irvine, CA, USA
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38
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Dinelli G, Aloisio I, Bonetti A, Marotti I, Cifuentes A. Compositional changes induced by UV-B radiation treatment of common bean and soybean seedlings monitored by capillary electrophoresis with diode array detection. J Sep Sci 2007; 30:604-11. [PMID: 17444230 DOI: 10.1002/jssc.200600289] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In this work, a new CE method with diode array detection (DAD) was developed for the monitoring and quantitation of flavonoids in different beans treated and untreated with UV-B radiation. Flavonoid concentration was monitored in UV-B-treated and untreated sprouts of three common beans (Zolfino ecotype, cv. Verdone, cv. Lingua di Fuoco) and one soybean (cv. Pacific). After acid hydrolysis of extracts, the CE-DAD method provides reproducible quantitative determinations of daidzein, glycitein, genistein, and kaempferol at ppm level in these natural matrices within a relatively short time (less than 16 min). Total flavonoid content determined by CE-DAD was 159 +/- 8, 26 +/- 2, 13 +/- 1, and 1.3 +/- 0.3 microg/g fresh weight for untreated sprouts of Pacific soybean, Verdone bean, Zolfino bean, and Lingua di Fuoco bean, respectively. UV-B treatment caused no significant quantitative effect on Pacific soybean sprouts, whereas it enhanced the total isoflavone content by 1.5, 1.8, and 3.2-fold in Verdone, Zolfino, and Lingua di Fuoco beans, respectively. The proposed method shows (i) the potentialities of bean sprouts as a natural source of bioactive compounds (antioxidants); (ii) the technological role of UV-B treatment for sprout isoflavone enrichment; and (iii) the good capabilities of CE-DAD to monitor this process.
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Affiliation(s)
- Giovanni Dinelli
- Department of Agroenvironmental Science and Technology, University of Bologna, Bologna, Italy
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39
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Abstract
This review presents different solvents and electrolytes commonly used as BGEs in NACE for the analysis of pharmaceutical compounds. Most NACE applications carried out since 1998 for the analysis of compounds of pharmaceutical interest are presented in four tables: (i) analysis of drugs and related substances, (ii) analysis of chiral substances, (iii) analysis of phytochemical extracts and (iv) analysis of drugs in biological fluids. These selected examples are used to illustrate the interest in NACE versus conventional aqueous CE.
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Affiliation(s)
- Laurent Geiser
- Laboratory of Analytical Pharmaceutical Chemistry, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne,Geneva, Switzerland
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40
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Gao F, Dong J, Li W, Wang T, Liao J, Liao Y, Liu H. Separation of phospholipids by capillary zone electrophoresis with indirect ultraviolet detection. J Chromatogr A 2006; 1130:259-64. [PMID: 16620855 DOI: 10.1016/j.chroma.2006.03.070] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2006] [Revised: 03/05/2006] [Accepted: 03/21/2006] [Indexed: 10/24/2022]
Abstract
A simple method for separation of different anionic and zwitterionic phospholipid classes by capillary zone electrophoresis (CZE), using indirect UV detection with adenosine monophosphate (AMP) as background electrolyte and the UV-absorbing additive, was successfully developed in this study. The separation conditions including apparent pH (pH*) of running buffer, concentration of AMP, organic solvent, applied voltage and capillary temperature were systematically optimized. The application of this method to human blood sample was also briefly examined.
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Affiliation(s)
- Fei Gao
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Department of Chemistry, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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41
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Current awareness in phytochemical analysis. PHYTOCHEMICAL ANALYSIS : PCA 2006; 17:134-41. [PMID: 16634291 DOI: 10.1002/pca.881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
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42
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Guo BY, Wen B, Shan XQ, Zhang SZ, Lin JM. Separation and determination of phthalates by micellar electrokinetic chromatography. J Chromatogr A 2005; 1095:189-92. [PMID: 16225882 DOI: 10.1016/j.chroma.2005.09.075] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Revised: 09/27/2005] [Accepted: 09/28/2005] [Indexed: 10/25/2022]
Abstract
A method has been developed for the separation and determination of dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), di-(2-ethylhexyl) phthalate (DEHP) and di-n-octyl phthalate (DnOP) by micellar electrokinetic chromatography (MEKC). The baseline separation of phthalates was achieved by using a buffer of 100 mM sodium cholate, 50 mM borate and 15% methanol (pH 8.5). The optimized MEKC method was used to quantify the concentrations of phthalates in 11 soil samples from different regions of China. The contents of DEP, DBP and DEHP in soils were ranged 0-0.42, 0-1.43, and 0.24-2.35 mg/kg, respectively, and no DMP and DnOP was detected. The limits of detection for DMP, DEP, DBP, DEHP, and DnOP were found to be 0.050, 0.051, 0.052, 0.054, and 0.063 mg/kg, respectively. The results obtained by the MEKC method were compared with those obtained by gas chromatography with flame ionization detector (GC-FID), and a good agreement was achieved.
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Affiliation(s)
- Bao-Yuan Guo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing
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