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Gonçalves Dantas CA, Abreu LS, Viana VF, Gouveia Veloso CA, Agra MDF, da Silva MS, Tavares JF. Dereplication of tropane alkaloids from four Erythroxylum species using liquid chromatography coupled with ESI-MS n and HRESIMS. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37:e9629. [PMID: 37799035 DOI: 10.1002/rcm.9629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 07/21/2023] [Accepted: 08/11/2023] [Indexed: 10/07/2023]
Abstract
RATIONALE Tropane alkaloids represent an important class of secondary metabolites, but many of these compounds are already described in the scientific literature, so the use of guided identification and isolation strategies, such as dereplication, represent a fast and safe alternative. METHODS For the annotation of the tropane alkaloids the chloroform phases of the four Erythroxylum species were analyzed by high-performance liquid chromatography coupled to mass spectrometry with positive-mode electrospray ionization, then the ions of their protonated molecules, molecular formulas and fragmentation patterns were observed and a comparison of the obtained data with those present in the scientific literature was performed. The compounds not fully annotated were isolated and characterized by 1 H and 13 C nuclear magnetic resonance spectroscopy. RESULTS The annotation of 29 tropane alkaloids was performed, some being described for the first time in the family Erythroxylaceae. The chemical profiles of these secondary metabolites in the four Erythroxylum species analyzed were traced and compared. Isolation of three compounds whose mass spectral data were not sufficient for their full annotation was performed. They were 6-(benzoyloxy)-3-(3,5-dimethoxy-4-hydroxybenzoyloxy)tropane, 6-(benzoyloxy)-3-(3,4,5-trimethoxybenzoyloxy)tropane and 6-(benzoyloxy)-3-(3,4,5-trimethoxycinamoyloxy)tropane, first reported in the species Erythroxylum revolutum Mart. CONCLUSIONS This work contributes to the phytochemical knowledge of the genus Erythroxylum, and demonstrates the efficiency and importance of using guided isolation methodologies of secondary metabolites in natural products research. Since safe results were presented in the annotation of the compounds evidenced, employing small quantities of organic solvents, when compared to classical methodologies, besides promoting an optimization in the research time.
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Affiliation(s)
- César Augusto Gonçalves Dantas
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Lucas Silva Abreu
- Departamento de Química Orgânica, Instituto de Química, Campus do Valonguinho, Universidade Federal Fluminense, Niterói, Brazil
| | - Vinicius Ferreira Viana
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Carlos Arthur Gouveia Veloso
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Maria de Fátima Agra
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Marcelo Sobral da Silva
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Josean Fechine Tavares
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Brazil
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Chen C, Li J, Xiong F, Wang B, Xiao Y, Zhou G. Multivariate statistical analysis of tropane alkaloids in Anisodus tanguticus (Maxim.) Pascher from different regions to trace geographical origins. ACTA CHROMATOGR 2021. [DOI: 10.1556/1326.2021.00952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
Anisodus tanguticus (Maxim.) Pascher is an important Tibetan folk medicine and the source of tropane alkaloids (TAs) grown in Qinghai-Tibet Plateau. There are marked differences in quality of A. tanguticus from geographic areas. The aim of present research was to establish a method for the quantitative analysis of TAs coupled with chemometrics analysis to trace geographical origins. Qualitative analysis of TAs in A. tanguticus was carried out using ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry and quantitative analysis of TAs in different plant organs from different geographical origin was achieved. Contents of TAs were subjected to the principal component analysis, and orthogonal partial least-squares discriminant analysis. The contents of the three marker compounds (anisodamine, anisodine and atropine) in the roots and acrial parts of A. tanguticus were positive correlated and varied significantly from different geographical origins. Principal component analysis, and orthogonal partial least-squares discriminant analysis results showed excellent discrimination between different geographical origin of A. tanguticus. This study could provide comprehensive evaluation and further utilization of A. tanguticus resources.
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Affiliation(s)
- Chen Chen
- 1 CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Xining, China
- 2 University of Chinese Academy of Sciences, Beijing, China
| | | | - Feng Xiong
- 1 CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Xining, China
- 2 University of Chinese Academy of Sciences, Beijing, China
| | - Bo Wang
- 1 CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Xining, China
- 2 University of Chinese Academy of Sciences, Beijing, China
| | - Yuanming Xiao
- 1 CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Xining, China
- 2 University of Chinese Academy of Sciences, Beijing, China
| | - Guoying Zhou
- 1 CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Xining, China
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Liu Z, Wang W, Luo J, Zhang Y, Zhang Y, Gan Z, Shen X, Zhang Y, Meng X. Anti-Apoptotic Role of Sanhuang Xiexin Decoction and Anisodamine in Endotoxemia. Front Pharmacol 2021; 12:531325. [PMID: 33967742 PMCID: PMC8099151 DOI: 10.3389/fphar.2021.531325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/24/2021] [Indexed: 02/06/2023] Open
Abstract
Endotoxemia is characterized by initial uncontrollable inflammation, terminal immune paralysis, significant cell apoptosis and tissue injury, which can aggravate or induce multiple diseases and become one of the complications of many diseases. Therefore, anti-inflammatory and anti-apoptotic therapy is a valuable strategy for the treatment of endotoxemia-induced tissue injury. Traditional Chinese medicine exhibits great advantages in the treatment of endotoxemia. In this review, we have analyzed and summarized the active ingredients and their metabolites of Sanhuang Xiexin Decoction, a famous formula in endotoxemia therapy. We then have summarized the mechanisms of Sanhuang Xiexin Decoction against endotoxemia and its mediated tissue injury. Furthermore, silico strategy was used to evaluate the anti-apoptotic mechanism of anisodamine, a well-known natural product that widely used to improve survival in patients with septic shock. Finally, we also have summarized other anti-apoptotic natural products as well as their therapeutic effects on endotoxemia and its mediated tissue injury.
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Affiliation(s)
- Zixuan Liu
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wenxiang Wang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jie Luo
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yingrui Zhang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yunsen Zhang
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhiqiang Gan
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaofei Shen
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yi Zhang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xianli Meng
- Innovative Institutes of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Costa Júnior DB, Araújo JSC, de Mattos Oliveira L, Neri FSM, Moreira POL, Taranto AG, Fonseca AL, de Pilla Varotti F, Leite FHA. Identification of novel antiplasmodial compound by hierarquical virtual screening and in vitro assays. J Biomol Struct Dyn 2020; 39:3378-3386. [PMID: 32364060 DOI: 10.1080/07391102.2020.1763837] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Malaria is an infectious disease caused by protozoa of the genus Plasmodium spp. with approximately 219 million cases in 2017. P. falciparum is main responsible for the most severe form of the disease, cerebral malaria. Despite of public health impacts, chemotherapy against malaria is still limited due to the emergence of drug resistance cases used in monotherapy and combination therapies. Thus, the development of new antimalarial drugs becomes emergency. One way of achieve this goal is to explore essential and/or unique therapeutic targets of the parasite, or at least sufficiently different to ensure selective inhibition. Enoil-ACP reductase (ENR) is a NADH-dependent enzyme responsible for the limiting step of the type II fatty acid biosynthetic pathway (FAS II). Thus, pharmacophore and docking based virtual screening were applied to prioritize molecules for in vitro assays against P. falciparum W2 strain. The application of successive filters at OOCC database (n = 618) resulted in the identification of one molecule (13) (EC50 = 0.098 ± 0.021 μM) with similar biological activity to artemether. The molecule 13 is a typical drug repurposing case due to previous other approved therapeutic uses on Chinese medicine as a non-specific cholinergic antagonist, thus it could be accelerated the drug development process. Additionally, molecular dynamics studies were used to confirm stability of the molecular interactions identified by molecular docking. Thus, representative structures of P. falciparum ENR can be used in a study to propose new derivatives for evaluation of biological activity in vitro and in vivo. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- David Bacelar Costa Júnior
- Programa de pós-graduação em Ciências Farmacêuticas, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
| | | | - Larissa de Mattos Oliveira
- Programa de pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
| | - Flávio Simas Moreira Neri
- Programa de pós-graduação em Ciências Farmacêuticas, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
| | | | - Alex Gutterres Taranto
- Laboratório de Química Farmacêutica Medicinal, Universidade Federal de São João Del-Rei, Sao Joao del-Rei, Brazil
| | - Amanda Luisa Fonseca
- Laboratório de Bioquímica Medicinal, Universidade Federal de São João Del-Rei, Sao Joao del-Rei, Brazil
| | - Fernando de Pilla Varotti
- Laboratório de Bioquímica Medicinal, Universidade Federal de São João Del-Rei, Sao Joao del-Rei, Brazil
| | - Franco Henrique Andrade Leite
- Programa de pós-graduação em Ciências Farmacêuticas, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil.,Programa de pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil.,Laboratório de Modelagem Molecular, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
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Du N, Zhou W, Jin H, Liu Y, Zhou H, Liang X. Characterization of tropane and cinnamamide alkaloids from
Scopolia tangutica
by high‐performance liquid chromatography with quadrupole time‐of‐flight tandem mass spectrometry. J Sep Sci 2019; 42:1163-1173. [DOI: 10.1002/jssc.201801201] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/05/2019] [Accepted: 01/05/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Nana Du
- Key Lab of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
| | - Weijia Zhou
- Key Lab of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
| | - Hongli Jin
- Key Lab of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian P. R. China
| | - Yanfang Liu
- Key Lab of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian P. R. China
| | - Han Zhou
- Key Lab of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian P. R. China
| | - Xinmiao Liang
- Key Lab of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian P. R. China
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Tian F, Li C, Wang X, Ren S, Li N, Liu Q, Zhou S, Lu Y, Zhao D, Chen X. Comparative study on pharmacokinetics of a series of anticholinergics, atropine, anisodamine, anisodine, scopolamine and tiotropium in rats. Eur J Drug Metab Pharmacokinet 2014; 40:245-53. [DOI: 10.1007/s13318-014-0192-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 03/22/2014] [Indexed: 01/06/2023]
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Boix C, Ibáñez M, Zamora T, Sancho JV, Niessen WMA, Hernández F. Identification of new omeprazole metabolites in wastewaters and surface waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 468-469:706-714. [PMID: 24061062 DOI: 10.1016/j.scitotenv.2013.08.095] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/27/2013] [Accepted: 08/28/2013] [Indexed: 06/02/2023]
Abstract
Omeprazole is one of the world-wide most consumed pharmaceuticals for treatment of gastric diseases. As opposed to other frequently used pharmaceuticals, omeprazole is scarcely detected in urban wastewaters and environmental waters. This was corroborated in a previous research, where parent omeprazole was not detected while four transformation products (TPs), mainly resulting from hydrolysis, were found in effluent wastewaters and surface waters. However, the low abundance of omeprazole TPs in the water samples together with the fact that omeprazole suffers an extensive metabolism, with a wide range of excretion rates (between 0.01 and 30%), suggests that human urinary metabolites should be investigated in the water environment. In this work, the results obtained in excretion tests after administration of a 40 mg omeprazole dose in three healthy volunteers are reported. Analysis by liquid chromatography coupled to hybrid quadrupole time-of-flight mass spectrometry (LC-QTOF MS) reported low concentrations of omeprazole in urine. Up to twenty-four omeprazole metabolites (OMs) were detected and tentatively elucidated. The most relevant OM was an omeprazole isomer, which obviously presented the same exact mass (m/z 346.1225), but also shared a major common fragment at m/z 198.0589. Subsequent analyses of surface water and effluent wastewater samples by both LC-QTOF MS and LC-MS/MS with triple quadrupole revealed that this metabolite (named as OM10) was the compound most frequently detected in water samples, followed by OM14a and OM14b. Up to our knowledge, OM10 had not been used before as urinary biomarker of omeprazole in waters. On the contrary, parent omeprazole was never detected in any of the water samples. After this research, it seems clear that monitoring the presence of omeprazole in the aquatic environment should be focused on the OMs suggested in this article instead of the parent compound.
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Affiliation(s)
- C Boix
- Research Institute for Pesticides and Water, University Jaume I, Avda. Sos Baynat, E-12071 Castellón, Spain
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8
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Li W, Wen J, He J, Cao D, Sun F, Li J, Fan G. Development and validation of a rapid and sensitive assay for the determination of anisodamine in 50 μL of beagle dog plasma by LC-MS/MS. J Sep Sci 2013; 36:3184-90. [PMID: 23897549 DOI: 10.1002/jssc.201300451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Revised: 07/20/2013] [Accepted: 07/20/2013] [Indexed: 11/06/2022]
Abstract
A simple, rapid, high-throughput, and highly sensitive LC-MS/MS was developed to determine anisodamine in a small volume (50 μL) of beagle dog plasma using atropine sulfate as the internal standard. The analyte and internal standard were isolated from 50 μL plasma samples after a one-step protein precipitation using Sirocco 96-well protein precipitation filtration plates. The separation was accomplished on a Hanbon Hedera CN column (100 × 4.6 mm, 5 μm) and the run time was 4 min. A Micromass Quatro Ultima mass spectrometer equipped with an ESI source was operated in the multiple reaction monitoring mode with the precursor-to-product ion transitions m/z 306.0→140.0 (anisodamine) and 290.0→123.9 (atropine) used for quantitation. The method was sensitive with a low LOQ of 0.05 ng/mL, and good linearity in the range 0.05-50 ng/mL for anisodamine (r(2) ≥ 0.995). All the validation data, such as accuracy, intra- and interrun precision, were within the required limits. The method was successfully applied to the pharmacokinetic study of anisodamine hydrochloride injection in beagle dogs.
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Affiliation(s)
- Wenxue Li
- Department of Pharmaceutical Analysis, School of Pharmacy, Second Military Medical University, Shanghai, P. R. China; College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P. R. China; Shanghai Key Laboratory for Pharmaceutical Metabolite Research, Shanghai, P. R. China
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Dong X, Liu W, Shen M. Development and Validation of a Sensitive LC-MS/MS Method for the Simultaneous Analysis of Three-Tropane Alkaloids in Blood and Urine. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.704533] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Liu Y, Kou Y, Xue M, Xu Y, He L, Ruan J, Liu K. Structural elucidation of in vivo metabolites of phencynonate and its analogue thiencynonate in rats by HPLC-ESI-MSn. Talanta 2010; 82:1200-11. [PMID: 20801319 DOI: 10.1016/j.talanta.2010.06.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Revised: 06/21/2010] [Accepted: 06/24/2010] [Indexed: 11/28/2022]
Abstract
The structural elucidation of the metabolites of phencynonate and its analogue thiencynonate in rats was performed by liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS(n)) in positive ion mode, by comparing their changes in molecular masses (DeltaM), retention times and spectral patterns with those of the parent drug. Phencynonate and thiencynonate were easily biotransformed in vivo by the pathways of N-demethylated, oxidative, hydroxylated and methoxylated to form seventeen metabolites that retained the some features of the two parent molecules. These metabolites included ten phencynonate metabolites (N-demethyphencynonate monoxide, N-demethyhydroxy phencynonate, phencynonate monoxide, hydroxyphencynonate, phencynonate dioxide, methoxyphencynonate, dihydroxyphencynonate, dihydroxyphencynonate, hydroxymethoxy phencynonate, trihydroxyphencynonate) and seven thiencynonate metabolites (N-demethy thiencynonate, N-demethythiencynonate monoxide, N-demethyhydroxythiencynonate, thiencynonate monoxide, hydroxythiencynonate, hydroxythiencynonate monoxide, dihydroxy thiencynonate). The described method has wide applicability to rapidly screen and provide structural information of these metabolites. The identifications of precise structures of these metabolites need to be confirmed by other techniques such as the (1)H and (13)C NMR.
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Affiliation(s)
- Ying Liu
- Department of Pharmacology, School of Chemical Biology & Pharmaceutical Sciences, Capital Medical University, Youanmen, Beijing 100069, China
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Zhang ZC, Xu M, Sun SF, Qiao X, Wang BR, Han J, Guo DA. Metabolic analysis of four phenolic acids in rat by liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2008; 871:7-14. [DOI: 10.1016/j.jchromb.2008.06.019] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2008] [Revised: 05/07/2008] [Accepted: 06/12/2008] [Indexed: 11/25/2022]
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Xu M, Zhang Z, Fu G, Sun S, Sun J, Yang M, Liu A, Han J, Guo D. Liquid chromatography–tandem mass spectrometry analysis of protocatechuic aldehyde and its phase I and II metabolites in rat. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 856:100-7. [PMID: 17599847 DOI: 10.1016/j.jchromb.2007.05.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2007] [Revised: 05/16/2007] [Accepted: 05/21/2007] [Indexed: 10/23/2022]
Abstract
A method using liquid chromatography-electrospray ionization tandem mass spectrometry (LC-MS/MS) analysis was established for the identification of metabolites in rat after oral administration of protocatechuic aldehyde, a major bioactive phenolic acid in the roots of Salvia miltiorrhiza. Eleven metabolites in rat plasma and urine were firstly identified as protocatechuic aldehyde, protocatechuic acid and their methylated, glucuronized or glycine conjugates on the basis of their MS fragmentation behaviors, while nine of these metabolites (except protocatechuic aldehyde and protocatechuic acid) were detected in rat bile. In addition, the possible metabolic pathway was proposed for the first time. In the phase I metabolism, protocatechuic aldehyde could be oxidized to protocatechuic acid. The conjugates would be formed in rat intestine, liver and kidney and excreted from rat urine and bile. Enthrohepatic circulation played an important role in the metabolism of protocatechuic aldehyde. The results proved that the established method was simple, reliable and sensitive, revealing that it could be used to rapid screen and identify the structures of active components responsible for pharmacological effects of protocatechuic aldehyde and to better understand its in vivo metabolism.
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Affiliation(s)
- Man Xu
- The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, No. 38 Xueyuan Road, Beijing 100083, PR China
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Chen Y, Du P, Han F, Chen H. Characterization of in vivo and in vitro Metabolic Pathway of Anisodamine by Liquid Chromatography‐Tandem Mass Spectrometry. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070701386538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Yong Chen
- a Hubei Province Key Lab of Bio‐Technology of Traditional Chinese Medicine , Hubei University , Wuhan, China
| | - Peng Du
- a Hubei Province Key Lab of Bio‐Technology of Traditional Chinese Medicine , Hubei University , Wuhan, China
| | - Fengmei Han
- a Hubei Province Key Lab of Bio‐Technology of Traditional Chinese Medicine , Hubei University , Wuhan, China
| | - Huaixia Chen
- b College of Chemistry and Chemical Engineering, Hubei University , Wuhan, China
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