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Stand out from matrix: Ultra-sensitive LC-MS/MS method for determination of histamine in complex biological samples using derivatization and solid phase extraction. Talanta 2020; 225:122056. [PMID: 33592777 DOI: 10.1016/j.talanta.2020.122056] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/09/2020] [Accepted: 12/23/2020] [Indexed: 11/22/2022]
Abstract
The determination of low abundant endogenous components is a challenge for the clinical samples. Histamine, a crucial endogenous component, fulfils various regulatory and mediatory functions in human, and the change of content is a critical index for the diagnosis of some diseases, especially allergy, asthma, and anaphylactic shock. However, it is challenging to detect histamine because of the low stability and concentration in complex biological samples. Here we developed an ultra-sensitive and accurate LC-MS/MS quantification method based on derivatization, isotope dilution, and solid phase extraction. The derivatization of histamine with diisopropyl phosphite (DIPP) not only enhanced the retention on the LC column but also improved the ionization efficiency. Next, solid phase extraction was applied to remove the interference, which finally resulted in standing out of the trace histamine from the high contents of the matrix. The lowest limit of quantification (LLOQ) was 0.1 pg/mL that is enough low to determine the histamine in one cell and low nano-liter of serum. This approach was successfully applied for the quantification of histamine in clinical serum samples of asthma patients and mast cell treated with chemicals modulating histamine release.
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Attah IK, Garimella SVB, Webb IK, Nagy G, Norheim RV, Schimelfenig CE, Ibrahim YM, Smith RD. Dual Polarity Ion Confinement and Mobility Separations. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:967-976. [PMID: 30834510 PMCID: PMC6520127 DOI: 10.1007/s13361-019-02138-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/18/2019] [Accepted: 01/18/2019] [Indexed: 05/12/2023]
Abstract
Here, we present simulations and describe the initial implementation of a device capable of performing simultaneous ion mobility (IM) separations of positive and negative ions based upon the structures for lossless ion manipulations (SLIM). To achieve dual polarity ion confinement, the DC fields used for lateral confinement in previous SLIM were replaced with RF fields. Concurrent ion transport and mobility separation in the SLIM device are shown possible due to the nature of the traveling wave (TW) voltage profile which has potential minima at opposite sides of the wave for each ion polarity. We explored the potential for performing simultaneous IM separations of cations and anions over the same SLIM path and the impacts on the achievable IM resolution and resolving power. Initial results suggest comparable IM performance with previous single-polarity SLIM separations can be achieved. We also used ion trajectory simulations to investigate the capability to manipulate the spatial distributions of ion populations based on their polarities by biasing the RF fields and TW potentials on each SLIM surface so as to limit the interactions between opposite polarity ions. Graphical Abstract.
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Affiliation(s)
- Isaac K Attah
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Ian K Webb
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Gabe Nagy
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Randolph V Norheim
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Colby E Schimelfenig
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Yehia M Ibrahim
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Richard D Smith
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
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3
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Han S, Lv Y, Kong L, Sun Y, Fu J, Li L, He L. Simultaneous identification of the anaphylactoid components from traditional Chinese medicine injections using rat basophilic leukemia 2H3 and laboratory of allergic disease 2 dual-mixed/cell membrane chromatography model. Electrophoresis 2018; 39:1181-1189. [DOI: 10.1002/elps.201700457] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 01/15/2018] [Accepted: 01/15/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Shengli Han
- School of Pharmacy; Xi'an Jiaotong University; Xi'an P. R. China
- School of Pharmacy and Department of Chemistry; University of Wisconsin-Madison; Madison WI USA
| | - Yanni Lv
- School of Pharmacy; Xi'an Jiaotong University; Xi'an P. R. China
| | - Liyun Kong
- School of Pharmacy; Xi'an Jiaotong University; Xi'an P. R. China
| | - Yueming Sun
- School of Pharmacy; Xi'an Jiaotong University; Xi'an P. R. China
| | - Jia Fu
- School of Pharmacy; Xi'an Jiaotong University; Xi'an P. R. China
| | - Lingjun Li
- School of Pharmacy and Department of Chemistry; University of Wisconsin-Madison; Madison WI USA
- School of Life Sciences; Tianjin University; Tianjin P. R. China
| | - Langchong He
- School of Pharmacy; Xi'an Jiaotong University; Xi'an P. R. China
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A simple and rapid infrared-assisted self enzymolysis extraction method for total flavonoid aglycones extraction from Scutellariae Radix and mechanism exploration. Anal Bioanal Chem 2017; 409:5593-5602. [PMID: 28730309 DOI: 10.1007/s00216-017-0497-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/16/2017] [Accepted: 06/26/2017] [Indexed: 01/30/2023]
Abstract
A new, simple, and fast infrared-assisted self enzymolysis extraction (IRASEE) approach for the extraction of total flavonoid aglycones (TFA) mainly including baicalein, wogonin, and oroxylin A from Scutellariae Radix is presented to enhance extraction yield. Extraction enzymolysis temperature, enzymolysis liquid-to-solid ratio, enzymolysis pH, enzymolysis time and infrared power, the factors affecting IRASEE procedure, were investigated in a newly designed, temperature-controlled infrared-assisted extraction (TC-IRAE) system to acquire the optimum analysis conditions. The results illustrated that IRASEE possessed great advantages in terms of efficiency and time compared with other conventional extraction techniques. Furthermore, the mechanism of IRASEE was preliminarily explored by observing the microscopic change of the samples surface structures, studying the main chemical compositions change of the samples before and after extraction and investigating the kinetics and thermodynamics at three temperature levels during the IRASEE process. These findings revealed that IRASEE can destroy the surface microstructures to accelerate the mass transfer and reduce the activation energy to intensify the chemical process. This integrative study presents a simple, rapid, efficient, and environmental IRASEE method for TFA extraction which has promising prospects for other similar herbal medicines. Graphical Abstract ᅟ.
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Lin Y, Wang C, Hou Y, He H, Huang L, Yang L, Sun M. The human mast cell line-1 cell membrane chromatography coupled with HPLC-ESI-MS/MS method for screening potentical anaphylactic components from chuanxinlian injection. Biomed Chromatogr 2017; 31. [DOI: 10.1002/bmc.4015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/11/2017] [Accepted: 05/23/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Yuanyuan Lin
- School of Medicine, Health Science Center; Xi'an Jiaotong University; Xi'an China
| | - Cheng Wang
- School of Medicine, Health Science Center; Xi'an Jiaotong University; Xi'an China
| | - Yajing Hou
- School of Medicine, Health Science Center; Xi'an Jiaotong University; Xi'an China
| | - Huaizhen He
- School of Medicine, Health Science Center; Xi'an Jiaotong University; Xi'an China
| | - Limin Huang
- School of Medicine, Health Science Center; Xi'an Jiaotong University; Xi'an China
| | - Liu Yang
- School of Medicine, Health Science Center; Xi'an Jiaotong University; Xi'an China
| | - Meng Sun
- School of Medicine, Health Science Center; Xi'an Jiaotong University; Xi'an China
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Breitkopf SB, Ricoult SJH, Yuan M, Xu Y, Peake DA, Manning BD, Asara JM. A relative quantitative positive/negative ion switching method for untargeted lipidomics via high resolution LC-MS/MS from any biological source. Metabolomics 2017; 13:30. [PMID: 28496395 PMCID: PMC5421409 DOI: 10.1007/s11306-016-1157-8] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 12/21/2016] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Advances in high-resolution mass spectrometry have created renewed interest for studying global lipid biochemistry in disease and biological systems. OBJECTIVES Here, we present an untargeted 30 min. LC-MS/MS platform that utilizes positive/negative polarity switching to perform unbiased data dependent acquisitions (DDA) via higher energy collisional dissociation (HCD) fragmentation to profile more than 1000-1500 lipid ions mainly from methyl-tert-butyl ether (MTBE) or chloroform:methanol extractions. METHODS The platform uses C18 reversed-phase chromatography coupled to a hybrid QExactive Plus/HF Orbitrap mass spectrometer and the entire procedure takes ~10 h from lipid extraction to identification/quantification for a data set containing 12 samples (~4 h for a single sample). Lipids are identified by both accurate precursor ion mass and fragmentation features and quantified using Lipid-Search and Elements software. RESULTS Using this approach, we are able to profile intact lipid ions from up to 18 different main lipid classes and 66 subclasses. We show several studies from different biological sources, including cultured cancer cells, resected tissues from mice such as lung and breast tumors and biological fluids such as plasma and urine. CONCLUSIONS Using mouse embryonic fibroblasts, we showed that TSC2-/- KD significantly abrogates lipid biosynthesis and that rapamycin can rescue triglyceride (TG) lipids and we show that SREBP-/- shuts down lipid biosynthesis significantly via mTORC1 signaling pathways. We show that in mouse EGFR driven lung tumors, a large number of TGs and phosphatidylmethanol (PMe) lipids are elevated while some phospholipids (PLs) show some of the largest decrease in lipid levels from ~ 2000 identified lipid ions. In addition, we identified more than 1500 unique lipid species from human blood plasma.
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Affiliation(s)
- Susanne B Breitkopf
- Division of Signal Transduction/Mass Spectrometry Core, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Stéphane J H Ricoult
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Min Yuan
- Division of Signal Transduction/Mass Spectrometry Core, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Ying Xu
- Division of Signal Transduction/Mass Spectrometry Core, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - David A Peake
- Thermo Fisher Scientific, 355 River Oaks Pkwy, San Jose, CA 95134, USA
| | - Brendan D Manning
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - John M Asara
- Division of Signal Transduction/Mass Spectrometry Core, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
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Tao J, Mao L, Zhou B, Liu Q, Yang A, Wei G, Liu R, Zhang WD, Xu W, Ye J. Simultaneous determination of ginsenosides and bufadienolides in rat plasma after the oral administration of Shexiang Baoxin Pill for pharmacokinetic study by liquid chromatography tandem mass spectrometry following solid-phase extraction. Biomed Chromatogr 2016; 31. [DOI: 10.1002/bmc.3816] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/09/2016] [Accepted: 08/13/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Jianfei Tao
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
- Pharmacy Department; Shanghai Yangsi Hospital; Shanghai People's Republic of China
| | - Ling Mao
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
- College of Pharmacy; Jiangxi University of Traditional Chinese Medicine; Nanchang People's Republic of China
| | - Bailun Zhou
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
- School of Traditional Chinese Medicine; Guangdong Pharmaceutical University; Guangzhou People's Republic of China
| | - Qun Liu
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
| | - Aigang Yang
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
| | - Guobing Wei
- College of Pharmacy; Jiangxi University of Traditional Chinese Medicine; Nanchang People's Republic of China
| | - Runhui Liu
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
| | - Wei-dong Zhang
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
- Department of Pharmacy; Shanghai Instituent of Pharmaceutical Industry; Shanghai People's Republic of China
| | - Wen Xu
- Department of Pharmacy; the Affiliated hospital of Qingdao University; Qingdao People's Republic of China
| | - Ji Ye
- Department of Natural Product Chemistry, School of Pharmacy; Second Military Medical University; Shanghai People's Republic of China
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Lv Y, Sun Y, Fu J, Kong L, Han S. Screening anti-allergic components of Astragali Radix using LAD2 cell membrane chromatography coupled online with UHPLC-ESI-MS/MS method. Biomed Chromatogr 2016; 31. [PMID: 27503168 DOI: 10.1002/bmc.3806] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/27/2016] [Accepted: 08/01/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Yanni Lv
- School of Pharmacy; Xi'an Jiaotong University; 76# Yanta West Road Xi'an 710061 China
- National-Provincial Joint Engineering Research Center for Natural Vascular Medicine Screening and Analysis; Xi'an 710061 China
| | - Yueming Sun
- School of Pharmacy; Xi'an Jiaotong University; 76# Yanta West Road Xi'an 710061 China
- National-Provincial Joint Engineering Research Center for Natural Vascular Medicine Screening and Analysis; Xi'an 710061 China
| | - Jia Fu
- School of Pharmacy; Xi'an Jiaotong University; 76# Yanta West Road Xi'an 710061 China
- National-Provincial Joint Engineering Research Center for Natural Vascular Medicine Screening and Analysis; Xi'an 710061 China
| | - Liyun Kong
- School of Pharmacy; Xi'an Jiaotong University; 76# Yanta West Road Xi'an 710061 China
- National-Provincial Joint Engineering Research Center for Natural Vascular Medicine Screening and Analysis; Xi'an 710061 China
| | - Shengli Han
- School of Pharmacy; Xi'an Jiaotong University; 76# Yanta West Road Xi'an 710061 China
- National-Provincial Joint Engineering Research Center for Natural Vascular Medicine Screening and Analysis; Xi'an 710061 China
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Quantitative profiling of prostaglandins as oxidative stress biomarkers in vitro and in vivo by negative ion online solid phase extraction - Liquid chromatography-tandem mass spectrometry. Anal Biochem 2016; 498:68-77. [PMID: 26808647 DOI: 10.1016/j.ab.2016.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 01/05/2016] [Accepted: 01/06/2016] [Indexed: 12/16/2022]
Abstract
Free radical-mediated oxidation of arachidonic acid to prostanoids has been implicated in a variety of pathophysiological conditions such as oxidative stress. Here, we report on the development of a liquid chromatography-mass spectrometry method to measure several classes of prostaglandin derivatives based on regioisomer-specific mass transitions down to levels of 20 pg/ml applied to the measurement of prostaglandin biomarkers in primary hepatocytes. The quantitative profiling of prostaglandin derivatives in rat and human hepatocytes revealed the increase of several isomers on stress response. In addition to the well-established markers for oxidative stress such as 8-iso-prostaglandin F2α and the prostaglandin isomers PE2 and PD2, this method revealed a significant increase of 15R-prostaglandin D2 from 236.1 ± 138.0 pg/1E6 cells in untreated rat hepatocytes to 2001 ± 577.1 pg/1E6 cells on treatment with ferric NTA (an Fe(3+) chelate with nitrilotriacetic acid causing oxidative stress in vitro as well as in vivo). Like 15R-prostaglandin D2, an unassigned isomer that revealed a more significant increase than commonly analyzed prostaglandin derivatives was identified. Mass spectrometric detection on a high-resolution instrument enabled high-quality quantitative analysis of analytes in plasma levels from rat experiments, where increased concentrations up to 23-fold change treatment with Fe(III)NTA were observed.
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Liu J, Wang L, Hu W, Chen X, Zhong D. Development of a UHPLC-MS/MS method for the determination of plasma histamine in various mammalian species. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 971:35-42. [PMID: 25264911 DOI: 10.1016/j.jchromb.2014.08.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 08/25/2014] [Accepted: 08/29/2014] [Indexed: 10/24/2022]
Abstract
Histamine is an important mediator of anaphylactic reactions. Although several methods have been developed to measure histamine levels, each has its limitations. In this study, we developed and validated a convenient bioanalytical method for the qualitative and quantitative determination of histamine in plasma samples from humans, beagle dogs, Sprague-Dawley rats, and imprinting control region mice. A simple plasma protein precipitation method using acetonitrile was selected, and hydrophilic interaction liquid chromatography coupled with mass spectrometry was used for sample separation and detection. Histamine was subjected to gradient elution with acetonitrile, ammonium acetate buffer, and formic acid. A mass spectrometer equipped with an electrospray ionization source was operated in the positive-ion multiple reaction monitoring mode for the detection of histamine and the internal standard. The [M+H](+) transitions were m/z 112→95 for histamine and m/z 116→99 for d4-histamine, which was used as the internal standard. The lower limit of quantification was 0.2μg/L and the calibration range was 0.2-500μg/L. The overall recovery ranged from 93.6% to 102.8%. The intra- and inter-run precision and accuracy were <15% for plasma samples from all four species. The method was validated by measuring the plasma histamine concentrations in five healthy human volunteers. In conclusion, we have developed and validated a novel bioanalytical method for the quantification of histamine levels in plasma samples from various mammalian species.
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Affiliation(s)
- Jia Liu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, PR China
| | - Lei Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, PR China
| | - Wenjuan Hu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, PR China
| | - Xiaoyan Chen
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, PR China
| | - Dafang Zhong
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, PR China.
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11
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Cai J, Li M, Xiong X, Fang X, Xu R. Detection of histamine in beer by nano extractive electrospray ionization mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2014; 49:9-12. [PMID: 24446257 DOI: 10.1002/jms.3315] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Revised: 11/14/2013] [Accepted: 11/19/2013] [Indexed: 06/03/2023]
Abstract
In this study, rapid quantitative detection of histamine in beer was achieved by using nano extractive electrospray ionization mass spectrometry (nano EESI-MS) coupling with standard addition method. Based on the MS(2) experiment, histamine concentrations in three beer samples were determined to be 1.10 ± 0.12 µg/ml, 0.81 ± 0.09 µg/ml and 0.79 ± 0.09 µg/ml. The limit of detection for this method was calculated to be 0.02 µg/ml. These results show that this novel method can be used for direct, rapid and sensitive detection of histamine in beer without any tedious sample pretreatment.
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Affiliation(s)
- Jiuxiao Cai
- Dalian Polytechnic University, 116034, Dalian, China
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12
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Yu L, Peng G, Li C, Jiang B, Xu H, Ding N, Zheng Y, Leng JQ. A rapid and low-cost approach to evaluate the allergenicity of herbal injection using HPLC analysis. Fitoterapia 2013; 88:12-8. [PMID: 23587872 DOI: 10.1016/j.fitote.2013.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 04/06/2013] [Accepted: 04/08/2013] [Indexed: 10/27/2022]
Abstract
Herbal medicines have ever been thought harmless, but it is obviously not true. Many adverse reports emerged with the development of their popular application in the world. Allergic reactions, especially serious immediate hypersensitivity, frequently occurred when herbal injections were used in clinic and made this ever prevailing agent nearly disappear in China. The aim of this study is to establish a rapid and economical method for the prediction of the allergenicity of herbal injections. Ovalbumin (OVA) and four other herbal injections, in which two of them were well known for their allergenicity, were selected to sensitize and stimulate the animals. Serotonin in the animal serum was detected with HPLC to reflect the anaphylactic response and compared with the other cytokines which could mediate the anaphylaxis, including histamine, IgE and β-hexosaminidase. The results suggest that serotonin can be detected quickly and has good correlation with the other allergy-related cytokines. It is a promising way for predicting the allergenicity of the herbal injections and those complicated natural products.
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Affiliation(s)
- Li Yu
- Pharmacy College, Nanjing University of Chinese Medicine, Nanjing 210029, PR China; Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Guoping Peng
- Pharmacy College, Nanjing University of Chinese Medicine, Nanjing 210029, PR China.
| | - Cunyu Li
- Pharmacy College, Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Baoping Jiang
- Pharmacy College, Nanjing University of Chinese Medicine, Nanjing 210029, PR China; Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Haokun Xu
- Pharmacy College, Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Ning Ding
- Pharmacy College, Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Yunfeng Zheng
- Pharmacy College, Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - John Q Leng
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520-8026, USA
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A positive/negative ion-switching, targeted mass spectrometry-based metabolomics platform for bodily fluids, cells, and fresh and fixed tissue. Nat Protoc 2012; 7:872-81. [PMID: 22498707 DOI: 10.1038/nprot.2012.024] [Citation(s) in RCA: 745] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The revival of interest in cancer cell metabolism in recent years has prompted the need for quantitative analytical platforms for studying metabolites from in vivo sources. We implemented a quantitative polar metabolomics profiling platform using selected reaction monitoring with a 5500 QTRAP hybrid triple quadrupole mass spectrometer that covers all major metabolic pathways. The platform uses hydrophilic interaction liquid chromatography with positive/negative ion switching to analyze 258 metabolites (289 Q1/Q3 transitions) from a single 15-min liquid chromatography-mass spectrometry acquisition with a 3-ms dwell time and a 1.55-s duty cycle time. Previous platforms use more than one experiment to profile this number of metabolites from different ionization modes. The platform is compatible with polar metabolites from any biological source, including fresh tissues, cancer cells, bodily fluids and formalin-fixed paraffin-embedded tumor tissue. Relative quantification can be achieved without using internal standards, and integrated peak areas based on total ion current can be used for statistical analyses and pathway analyses across biological sample conditions. The procedure takes ∼12 h from metabolite extraction to peak integration for a data set containing 15 total samples (∼6 h for a single sample).
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14
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Thomas CM, Hong T, van Pijkeren JP, Hemarajata P, Trinh DV, Hu W, Britton RA, Kalkum M, Versalovic J. Histamine derived from probiotic Lactobacillus reuteri suppresses TNF via modulation of PKA and ERK signaling. PLoS One 2012; 7:e31951. [PMID: 22384111 PMCID: PMC3285189 DOI: 10.1371/journal.pone.0031951] [Citation(s) in RCA: 303] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 01/20/2012] [Indexed: 02/06/2023] Open
Abstract
Beneficial microbes and probiotic species, such as Lactobacillus reuteri, produce biologically active compounds that can modulate host mucosal immunity. Previously, immunomodulatory factors secreted by L. reuteri ATCC PTA 6475 were unknown. A combined metabolomics and bacterial genetics strategy was utilized to identify small compound(s) produced by L. reuteri that were TNF-inhibitory. Hydrophilic interaction liquid chromatography-high performance liquid chromatography (HILIC-HPLC) separation isolated TNF-inhibitory compounds, and HILIC-HPLC fraction composition was determined by NMR and mass spectrometry analyses. Histamine was identified and quantified in TNF-inhibitory HILIC-HPLC fractions. Histamine is produced from L-histidine via histidine decarboxylase by some fermentative bacteria including lactobacilli. Targeted mutagenesis of each gene present in the histidine decarboxylase gene cluster in L. reuteri 6475 demonstrated the involvement of histidine decarboxylase pyruvoyl type A (hdcA), histidine/histamine antiporter (hdcP), and hdcB in production of the TNF-inhibitory factor. The mechanism of TNF inhibition by L. reuteri-derived histamine was investigated using Toll-like receptor 2 (TLR2)-activated human monocytoid cells. Bacterial histamine suppressed TNF production via activation of the H2 receptor. Histamine from L. reuteri 6475 stimulated increased levels of cAMP, which inhibited downstream MEK/ERK MAPK signaling via protein kinase A (PKA) and resulted in suppression of TNF production by transcriptional regulation. In summary, a component of the gut microbiome, L. reuteri, is able to convert a dietary component, L-histidine, into an immunoregulatory signal, histamine, which suppresses pro-inflammatory TNF production. The identification of bacterial bioactive metabolites and their corresponding mechanisms of action with respect to immunomodulation may lead to improved anti-inflammatory strategies for chronic immune-mediated diseases.
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Affiliation(s)
- Carissa M. Thomas
- Interdepartmental Program in Cell and Molecular Biology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Teresa Hong
- Department of Immunology, Beckman Research Institute of the City of Hope, Duarte, California, United States of America
| | - Jan Peter van Pijkeren
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, United States of America
| | - Peera Hemarajata
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Dan V. Trinh
- Department of Immunology, Beckman Research Institute of the City of Hope, Duarte, California, United States of America
| | - Weidong Hu
- Department of Immunology, Beckman Research Institute of the City of Hope, Duarte, California, United States of America
| | - Robert A. Britton
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, United States of America
| | - Markus Kalkum
- Department of Immunology, Beckman Research Institute of the City of Hope, Duarte, California, United States of America
| | - James Versalovic
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, United States of America
- Department of Pathology, Texas Children's Hospital, Houston, Texas, United States of America
- * E-mail:
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