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Saadi Ali H, Yardım Y. Simultaneous estimation of total phenolic and alkaloid contents in the tea samples by utilizing the catechin and caffeine oxidation signals through the square-wave voltammetry technique. Food Chem 2024; 441:138262. [PMID: 38160520 DOI: 10.1016/j.foodchem.2023.138262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
This work outlines the simultaneous estimation of the total phenolic and alkaloid contents in the tea samples by using catechin (C) and caffeine (CAF) oxidation signals at a non-modified boron-doped diamond (BDD) electrode. Two irreversible oxidation peaks, about + 1.03 (for C) and + 1.45 V (for CAF) vs Ag/AgCl in acetate buffer solution at pH 4.7, were seen in the cyclic voltammetric profile of the binary mixtures of C and CAF. In optimal conditions and utilizing the square-wave mode, the BDD electrode allows for simultaneous quantification of C and CAF within the concentration ranges of 5.0-100.0 µg mL-1 (1.72 × 10-5 - 3.45 × 10-3 mol/L) and 1.0-50.0 µg mL-1 (5.15 × 10-6 - 2.57 × 10-4 mol/L) respectively. The corresponding detection limits are 1.22 µg mL-1 (4.21 × 10-6 mol/L) for C and 0.11 µg mL-1 (5.66 × 10-7 mol/L) for CAF. Other phenolic compounds (like tannic acid, gallic acid, epicatechin, and epigallocatechin gallate) and other alkaloids (theophylline and theobromine) present in tea samples were examined for selectivity assessment. Ultimately, the applicability of the proposed approach was demonstrated by estimating the total phenolic and alkaloid contents in the black and green tea samples, expressed as C and CAF equivalents. The results obtained were contrasted against those acquired using UV-Vis spectrometry.
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Affiliation(s)
- Hoshyar Saadi Ali
- Van Yuzuncu Yil University, Faculty of Science, Department of Analytical Chemistry, 65080 Van, Turkey; Knowledge University, College of Science, Department of Medical Laboratory Science, Kirkuk Road, 44001, Erbil, Iraq
| | - Yavuz Yardım
- Van Yuzuncu Yil University, Faculty of Pharmacy, Department of Analytical Chemistry, 65080 Van, Turkey.
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Chen T, Xiao Z, Liu X, Wang T, Wang Y, Ye F, Su J, Yao X, Xiong L, Yang DH. Natural products for combating multidrug resistance in cancer. Pharmacol Res 2024; 202:107099. [PMID: 38342327 DOI: 10.1016/j.phrs.2024.107099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/22/2024] [Accepted: 02/05/2024] [Indexed: 02/13/2024]
Abstract
Cancer cells frequently develop resistance to chemotherapeutic therapies and targeted drugs, which has been a significant challenge in cancer management. With the growing advances in technologies in isolation and identification of natural products, the potential of natural products in combating cancer multidrug resistance has received substantial attention. Importantly, natural products can impact multiple targets, which can be valuable in overcoming drug resistance from different perspectives. In the current review, we will describe the well-established mechanisms underlying multidrug resistance, and introduce natural products that could target these multidrug resistant mechanisms. Specifically, we will discuss natural compounds such as curcumin, resveratrol, baicalein, chrysin and more, and their potential roles in combating multidrug resistance. This review article aims to provide a systematic summary of recent advances of natural products in combating cancer drug resistance, and will provide rationales for novel drug discovery.
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Affiliation(s)
- Ting Chen
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Zhicheng Xiao
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Xiaoyan Liu
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Tingfang Wang
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Yun Wang
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Fei Ye
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Juan Su
- School of Pharmacy, Naval Medical University, Shanghai 200433, China.
| | - Xuan Yao
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Liyan Xiong
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Dong-Hua Yang
- New York College of Traditional Chinese Medicine, NY 11501, USA.
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Chen Q, Yin C, Li Y, Yang Z, Tian Z. Pharmacokinetic interaction between peimine and paeoniflorin in rats and its potential mechanism. PHARMACEUTICAL BIOLOGY 2021; 59:129-133. [PMID: 33721550 PMCID: PMC7971317 DOI: 10.1080/13880209.2021.1875013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/07/2020] [Accepted: 01/08/2021] [Indexed: 05/27/2023]
Abstract
CONTEXT Peimine and paeoniflorin can be combined for the treatment of cough in paediatrics. The interaction during the co-administration could dramatically affect the bioavailability of drugs. OBJECTIVE The interaction between peimine and paeoniflorin was investigated in this study. MATERIALS AND METHODS The pharmacokinetics of paeoniflorin (20 mg/kg) with or without the coadministration of peimine (5 mg/kg for 10 days before paeoniflorin) was orally investigated in Sprague-Dawley rats (n = 6). The group without the peimine was set as the control group. The metabolic stability of paeoniflorin was studied in rat liver with microsomes. The effect of peimine on the absorption of paeoniflorin was investigated with Caco-2 cell monolayers. RESULTS The Cmax (244.98 ± 10.95 vs. 139.18 ± 15.14 μg/L) and AUC(0-t) (3295.92 ± 263.02 vs. 139.18 ± 15.14 h·μg/L) of paeoniflorin was increased by peimine. The t1/2 was prolonged from 5.33 ± 1.65 to 14.21 ± 4.97 h and the clearance was decreased from 15.43 ± 1.75 to 4.12 ± 0.57 L/h/kg. Consistently, peimine increased the metabolic stability of paeoniflorin with rat liver microsomes with the increased t1/2 (56.78 ± 2.62 vs. 26.33 ± 3.15 min) and the decreased intrinsic clearance (24.42 ± 3.78 vs. 52.64 ± 4.47 μL/min/mg protein). Moreover, the transportation of paeoniflorin was also inhibited by peimine as the efflux ratio decreased from 3.06 to 1.63. DISCUSSION AND CONCLUSIONS Peimine increased the systemic exposure of paeoniflorin through inhibiting the activity of CYP3A4 and P-gp. These results provide a reference for further in vivo studies in a broader population.
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Affiliation(s)
- Qiangjun Chen
- Department of Thyroid and Breast Surgery, Weifang Yidu Central Hospital, Weifang, Shandong, 262500, China
| | - Changlong Yin
- Department of Pediatrics, Weifang Yidu Central Hospital, Weifang, China
| | - Yongwei Li
- Department of Pediatrics, Weifang Yidu Central Hospital, Weifang, China
| | - Zhe Yang
- Qingzhou Medical Security Bureau, Weifang, China
| | - Zongying Tian
- Department of Human Anatomy, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
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Jin Y, Chen Y, Liu J, Bao X, Zhi Y, Wen C, Zhu W. Pharmacokinetics of ebeiedinone in mouse blood by UPLC–MS/MS. ACTA CHROMATOGR 2020. [DOI: 10.1556/1326.2019.00680] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
An ultra-performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) method was established to determine ebeiedinone in mouse blood, and the pharmacokinetics of ebeiedinone after intravenous (0.5 mg/kg) and oral (2, 4, and 8 mg/kg) administration was studied. Twenty-four mice were randomly divided into 4 groups, 1 group was for intravenous administration (0.5 mg/kg), and other 3 groups were for oral administration (2, 4, and 8 mg/kg), with 6 rats in each group. Yubeinine was used as an internal standard. Multiple reaction monitoring (MRM) mode was used to quantitatively analyzed ebeiedinone m/z 414.4 → 91.1 and the internal standard m/z 430.4 → 412.3 in the electrospray ionization (ESI) positive interface. In the concentration range of 1–2000 ng/mL, the ebeiedinone in the mouse blood was linear (r2 > 0.995), and the lower limit of quantification was 1.0 ng/mL. In the mouse blood, the intra-day precision coefficient of variation (CV) was less than 15%, and the inter-day precision CV was less than 15%. The accuracy ranged from 85.4% to 114.6%, and the average recovery was higher than 61.3%. The matrix effect was between 87.0% and 106.5%. These data met the pharmacokinetic study requirements of ebeiedinone. The UPLC–MS/MS method was sensitive, rapid, and selective and was successfully applied to the pharmacokinetic study of ebeiedinone in mice. The absolute bioavailability of ebeiedinone was 30.6%.
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Affiliation(s)
- Yongxi Jin
- 1 Department of Rehabilitation, Wenzhou Municipal Hospital of Traditional Chinese Medicine, Wenzhou 325005, China
| | - Yuyan Chen
- 2 Laboratory Animal Center, Wenzhou Medical University, Wenzhou 325035, China
| | - Jiawen Liu
- 2 Laboratory Animal Center, Wenzhou Medical University, Wenzhou 325035, China
| | - Xi Bao
- 3 The First Affiliated Hospital of Wenzhou Medical University, WenZhou 325000, China
| | - Yinghao Zhi
- 1 Department of Rehabilitation, Wenzhou Municipal Hospital of Traditional Chinese Medicine, Wenzhou 325005, China
| | - Congcong Wen
- 2 Laboratory Animal Center, Wenzhou Medical University, Wenzhou 325035, China
| | - Wenzong Zhu
- 1 Department of Rehabilitation, Wenzhou Municipal Hospital of Traditional Chinese Medicine, Wenzhou 325005, China
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Che P, Wei X, Song Y, Zhang B, Liu H, Qi Y. Characterization of the complete chloroplast genome sequence of Fritillaria delavayi, an ethnomedicinal plant in China. MITOCHONDRIAL DNA PART B-RESOURCES 2019; 4:3492-3493. [PMID: 33366054 PMCID: PMC7707188 DOI: 10.1080/23802359.2019.1674742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fritillaria delavayi has been widely used as a traditional Chinese medicine (TCM) to treat respiratory diseases for thousands of years. In this study, the complete chloroplast genome of F. delavayi was assembled. The circular genome is 151,938 bp in size, which is comprised of one large single-copy (LSC) region of 81,757 bp and one small single-copy (SSC) region of 17,537 bp and separated by a pair of inverted repeat (IR) regions of 26,322 bp. A total of 112 unique genes (78 protein-coding, 30 tRNA, and 4 rRNA) are predicted and 19 of them are duplicated in IR regions. The overall GC content is 37.0% while the GC content of the LSC, SSC, and IR regions are 34.8, 30.5, and 42.5%, separately. Phylogenetic analysis indicated that F. delavayi was closely related to F. cirrhosa.
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Affiliation(s)
- Peng Che
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Xueping Wei
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.,Engineering Research Center of Tradition Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Yichen Song
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Bengang Zhang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.,Engineering Research Center of Tradition Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Haitao Liu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.,Engineering Research Center of Tradition Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Yaodong Qi
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.,Engineering Research Center of Tradition Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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Zhou W, Liu Y, Liao X, Chen Z. Capillary electrophoresis-mass spectrometry using robust poly(ether ether ketone) capillary for tolerance to high content of organic solvents. J Chromatogr A 2019; 1593:156-163. [DOI: 10.1016/j.chroma.2019.01.070] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/23/2019] [Accepted: 01/25/2019] [Indexed: 11/30/2022]
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Simultaneous Determination and Pharmacokinetics of Peimine and Peiminine in Beagle Dog Plasma by UPLC-MS/MS after the Oral Administration of Fritillariae ussuriensis Maxim and Fritillariae thunbergii Miq Powder. Molecules 2018; 23:molecules23071573. [PMID: 29958456 PMCID: PMC6100562 DOI: 10.3390/molecules23071573] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/18/2018] [Accepted: 06/21/2018] [Indexed: 02/06/2023] Open
Abstract
A simple and high sensitive ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was developed and validated for the simultaneous determination of peimine and peiminine in beagle dog plasma after the oral administration of Fritillariae ussuriensis Maxim and Fritillariae thunbergii Miq powder. Chromatographic separation was achieved on an ACQUIT UPLC® BEH C18 column (1.7 μm, 2.1 × 100 mm) in a gradient elution way with a mobile phase consisting of acetonitrile and water containing 0.1% formic acid at a flow rate of 0.4 mL/min. The plasma samples were prepared by a liquid–liquid extraction (LLE) method with ethyl acetate. The analytes were detected with a triple quadrupole tandem mass spectrometry (MS) in multiple reaction monitoring (MRM) mode and a positive ion electrospray ionization (ESI) of the transitions at m/z 432.4→414.4 for peimine and m/z 430.3→412.3 for peiminine. The method was linear for two analytes over the investigated range with all determined correlation coefficients exceeding 0.9900. The lower limit of quantification (LLOQ) was 0.988 ng/mL for peimine and 0.980 ng/mL for peiminine. The mean extraction recoveries of peimine and peiminine at three quality control samples (QC) levels were ranged from 82.56 to 88.71%, and matrix effects ranged from 92.06 to 101.2%. The intra-day and inter-day precision and accuracy were within the acceptable limits at LLOQ and QC levels. The method was effectively and successfully applied to the pharmacokinetics of peimine and peiminine after oral administration of powder to beagle dogs. The obtained results may be help to guide the clinical application of Fritillaria ussuriensis Maxim and Fritillaria thunbergii Miq.
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Wu X, Chan SW, Ma J, Li P, Shaw PC, Lin G. Investigation of association of chemical profiles with the tracheobronchial relaxant activity of Chinese medicinal herb Beimu derived from various Fritillaria species. JOURNAL OF ETHNOPHARMACOLOGY 2018; 210:39-46. [PMID: 28842340 DOI: 10.1016/j.jep.2017.08.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 08/21/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fritillariae Bulbus (Beimu in Chinese) is derived from the bulbus of many Fritillaria species (family Liliaceae), which has been used as an antitussive herb in traditional Chinese medicine for more than 2000 years. Due to the complexity of plant origins and significant variations in chemical profiles, the characterization of the profile of the major bioactive constituents and its association with pharmacological activity are important for the quality control of Beimu herbs from different origins. AIM OF THE STUDY This study aims to investigate the distribution of major bioactive isosteroidal alkaloids in Beimu herbs of different origins and its correlation with the tracheobronchial relaxant activity. METHODS Quantification of 7 main bioactive 5α-cevanine isosteroidal alkaloids, including ebeiedine, ebeiedinone, hupehenine, isoverticine, verticine, verticinone and imperialine, in 23 Fritillaria species was performed using gas chromatography. The relaxant effect of different extracts of 4 commonly used Beimu herbs, namely Zhe-Beimu (F. thunbergii Miq.), Chuan-Beimu (F. cirrhosa D. Don), Hubei-Beimu (F. hupehensis Hsiao et K. C. Hsia) and Yi-Beimu (F. pallidiflora Schrenk), was evaluated using rat isolated tracheal and bronchial preparations pre-contracted with carbachol, the well established in vitro antitussive model. RESULTS Amongst 23 Fritillaria species detected, significant variations of the types and quantities of 7 major isosteroidal alkaloids were determined, which served as an important indicator for the classification of different Beimu herbs with distinct geographic distributions. Based on the type and quantity of these alkaloids, different origins of Beimu could be clearly clustered into several subgroups by principal component analysis. Furthermore, both crude alkaloid and water extracts of all 4 Beimu herbs showed a dose-dependent tracheobronchial relaxation with different potencies. The total content of alkaloids (weight adjusted based on the activity of individual alkaloids) in Beimu extracts significantly correlated with their tracheobronchial relaxation effects (r2 > 0.9, p < 0.001). CONCLUSIONS The results demonstrated that the differences in chemical profile of major bioactive isosteroidal alkaloids and pharmacological activity of Beimu could be incorporated into a simple and unified method for quality control and potential prediction of activity of Beimu herbs from different origins.
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Affiliation(s)
- Xu Wu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Li Dak Sum Yip Yio Chin R & D Centre for Chinese Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, PR China.
| | - Shun-Wan Chan
- Department of Food and Health Sciences, Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong Special Administrative Region.
| | - Jiang Ma
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Li Dak Sum Yip Yio Chin R & D Centre for Chinese Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - Ping Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, PR China.
| | - Pang-Chui Shaw
- Li Dak Sum Yip Yio Chin R & D Centre for Chinese Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; School of Life Sciences, Faculty of Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - Ge Lin
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Li Dak Sum Yip Yio Chin R & D Centre for Chinese Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
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Determination and Visualization of Peimine and Peiminine Content in Fritillaria thunbergii Bulbi Treated by Sulfur Fumigation Using Hyperspectral Imaging with Chemometrics. Molecules 2017; 22:molecules22091402. [PMID: 28832506 PMCID: PMC6151643 DOI: 10.3390/molecules22091402] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 08/21/2017] [Accepted: 08/21/2017] [Indexed: 12/11/2022] Open
Abstract
Rapid, non-destructive, and accurate quantitative determination of the effective components in traditional Chinese medicine (TCM) is required by industries, planters, and regulators. In this study, near-infrared hyperspectral imaging was applied for determining the peimine and peiminine content in Fritillaria thunbergii bulbi under sulfur fumigation. Spectral data were extracted from the hyperspectral images. High-performance liquid chromatography (HPLC) was conducted to determine the reference peimine and peiminine content. The successive projection algorithm (SPA), weighted regression coefficient (Bw), competitive adaptive reweighted sampling (CARS), and random frog (RF) were used to select optimal wavelengths, while the partial least squares (PLS), least-square support vector machine (LS–SVM) and extreme learning machine (ELM) were used to build regression models. Regression models using the full spectra and optimal wavelengths obtained satisfactory results with the correlation coefficient of calibration (rc), cross-validation (rcv) and prediction (rp) of most models being over 0.8. Prediction maps of peimine and peiminine content in Fritillaria thunbergii bulbi were formed by applying regression models to the hyperspectral images. The overall results indicated that hyperspectral imaging combined with regression models and optimal wavelength selection methods were effective in determining peimine and peiminine content in Fritillaria thunbergii bulbi, which will help in the development of an online detection system for real-world quality control of Fritillaria thunbergii bulbi under sulfur fumigation.
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Ruan X, Cui WX, Yang L, Li ZH, Liu B, Wang Q. Extraction of total alkaloids, peimine and peiminine from the flower of Fritillaria thunbergii Miq using supercritical carbon dioxide. J CO2 UTIL 2017. [DOI: 10.1016/j.jcou.2017.01.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Novel LC-MS/MS method for analyzing imperialine in rat plasma: development, validation, and application to pharmacokinetics. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 938:51-9. [PMID: 24055750 DOI: 10.1016/j.jchromb.2013.08.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 08/25/2013] [Accepted: 08/27/2013] [Indexed: 11/22/2022]
Abstract
A sensitive, selective, rapid liquid chromatography-electrospray ionization-tandem mass spectrometric method was developed and validated in rat plasma to quantify imperialine, a major active constituent extracted from Bulbus Fritillariae Cirrhosae. Before analysis, plasma samples were pre-treated using cost-effective protein precipitation in order to extract imperialine and the internal standard, carbamzepine. The two analytes were then separated on a Diamonsil ODS chromatography column using gradient elution with a mobile phase of 0.1% aqueous formic acid and acetonitrile. Mass spectrometry was carried out in multiple reaction monitoring mode using a positive electrospray ionization interface. The calibration curve was linear (r(2)=0.9998) over the concentration range 2-1000ng/mL, while the validated limit of determination (LOD) was 0.5ng/mL. Precision varied from 0.1% to 7.1%, and the accuracy varied within ±2%. The method proved robust to sample freezing and thawing, as well as short- and long-term sample storage. The developed method was successfully applied to the pharmacokinetic study of imperialine in rats. Different amounts of imperialine were administered in single doses orally or through the caudal vena cava, and pharmacokinetic parameters were evaluated. Oral bioavailability with a dose of 1mg/kg was 31.2%; 5mg/kg, 53.6%; and 10mg/kg, 47.4%.
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Chen LH, Zhang HM, Guan ZY, Zhu WF, Yi WJ, Guan YM, Wang S, Liu HN. Sex dependent pharmacokinetics, tissue distribution and excretion of peimine and peiminine in rats assessed by liquid chromatography-tandem mass spectrometry. JOURNAL OF ETHNOPHARMACOLOGY 2013; 145:77-84. [PMID: 23123795 DOI: 10.1016/j.jep.2012.09.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 09/04/2012] [Accepted: 09/16/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fritillaria thunbergii Miq. has been traditionally used in China as antitussive and expectorant herbs, and newly used in the clinical treatment of leukemia in recent years. AIM To investigate whether gender exerted a significant influence on the pharmacokinetics, tissue distribution and excretion of peimine and peiminine in Sprague-Dawley rats who were given a single oral administration of 4.25 g/kg Fritillaria thunbergii Miq. extract. MATERIALS AND METHODS Sprague-Dawley rats were assigned into two groups based on the gender and orally administered 4.25 g/kg Fritillaria thunbergii Miq. extract for each individual pharmacokinetics, tissue distribution and excretion study. RESULTS Compared with female rats, peimine and peiminine were eliminated slowly from male rat plasma, and significant gender-related differences were observed in the pharmacokinetic parameters. Drug blood and tissue levels in male rats were significantly higher than the female counterparts except for several tissues, such as fat, muscle and skin. Gender also exerted a significant influence on the urine excretion but such effect was not observed in the feces excretion study. CONCLUSIONS Gender exerted a significant influence on the pharmacokinetics, tissue distribution and urine excretion of peimine and peiminine. It is assumed that the sex-associated differences of peimine and peiminine in rats might be mainly result from sex-dependent expression and activity of drug metabolism enzymes and P-glycoprotein.
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Affiliation(s)
- Li-hua Chen
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of TCM, No.18 Yun Wan Road, Nanchang 330004, PR China.
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Liu L, You W, Zheng L, Chen F, Jia Z. Determination of peimine and peiminine in Bulbus Fritillariae Thunbergii by capillary electrophoresis by indirect UV detection using N-(1-naphthyl)ethylenediamine dihydrochloride as probe. Electrophoresis 2012; 33:2152-8. [PMID: 22821492 DOI: 10.1002/elps.201200021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A simple and inexpensive CE method was developed for the determination of peimine and peiminine. Because of the lack of an UV chromophore of peimine and peiminine, the detection method chosen was indirect UV detection, with N-(1-naphthyl)ethylenediamine dihydrochloride (NED) as the UV absorbing probe. It was thought that NED, a chromophoric ion, may form hydrogen bonding pairs with the analytes to cause significant changes in separation selectivity. Additionally, the hydrophobic interactions between analytes and the probe also play a crucial role in achieving a resolution between the two analytes. The analyses were carried out with a background electrolyte composed of 66% MeOH-ACN (1:1, v/v), 34% aqueous buffer containing 15 mM NaH₂PO₄, 2.5 mM NED, 4 mM H₃PO₄. MeOH-ACN mixtures used as organic modifiers can not only reduce the adsorption of NED to the capillary wall, but also decrease the baseline noise and drift. The method provided a linear response ranging from 5 to 200 μg/mL. The limits of detection (LODs) for peimine and peiminine were 3.9 and 4.1 μg/mL, respectively. The repeatabilities (n = 3) reached relative standard deviation values (RSDs) of 3.4 and 4.1% for the peak areas, 4.0 and 4.4% for the peak heights, and 0.29 and 0.30% for the migration time of peimine and peiminine, respectively. Regression equations revealed linear relationships (r = 0.9995-0.9996) between the peak area of each analyte and the concentration. The method developed was successfully applied to quantify peimine and peiminine in chloroform extracts of the ground Bulbus Fritillariae Thunbergii.
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Affiliation(s)
- Lihong Liu
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.
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Lee JW, Yamamoto T, Uchikata T, Matsubara A, Fukusaki E, Bamba T. Development of a polar lipid profiling method by supercritical fluid chromatography/mass spectrometry. J Sep Sci 2011; 34:3553-60. [DOI: 10.1002/jssc.201100539] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Zhao H, Chen J, Shi Q, Li X, Zhou W, Zhang D, Zheng L, Cao W, Wang X, Sen-Chun Lee F. Simultaneous determination nucleosides in marine organisms using ultrasound-assisted extraction followed by hydrophilic interaction liquid chromatography-electrospray ionization time-of-flight mass spectrometry. J Sep Sci 2011; 34:2594-601. [DOI: 10.1002/jssc.201100421] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 07/04/2011] [Accepted: 07/04/2011] [Indexed: 01/10/2023]
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16
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Wu X, Chen J, Pan Y. Simultaneous determination of peimine and peiminine in rat plasma by LC-ESI-MS employing solid-phase extraction. Biomed Chromatogr 2010; 24:902-7. [PMID: 20033892 DOI: 10.1002/bmc.1384] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A simple and reliable LC-ESI-MS method for the determination of peimine and peiminine in rat plasma was developed for the first time. The method was proven to be specific and sensitive by carrying out validation. The analytes were extracted from rat plasma via solid-phase extraction on Waters Oasis MCX cartridges. Chromatography separation was achieved on a C(18) column using 10 mM ammonium acetate (adjusted to pH 3.0 with glacial acetic acid)-acetonitrile (85:15, v/v) as mobile phase. The linear range was 1-100 ng/mL for peimine and peiminine. Intra- and inter-day precisiond were less than 10%. Accuracies were within 85-115% of their nominal concentrations. The limit of quantification was 1 ng/mL for both analytes. The developed assay was successfully applied to pharmacokinetic study of peimine and peiminine in rats orally administered the alkaloids extracts from Bulbus Fritillariae, demonstrating a possible broader spectrum of applications of this method.
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Affiliation(s)
- Xiaodan Wu
- Center of Analysis and Measurement of Zhejiang University, Hangzhou, Zhejiang Province 310029, People's Republic of China
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17
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Cao XW, Li J, Chen SB, Li XB, Xiao PG, Chen SL, Yang DJ. Simultaneous determination of nine nucleosides and nucleobases in different Fritillaria species by HPLC-diode array detector. J Sep Sci 2010; 33:1587-94. [PMID: 20405484 DOI: 10.1002/jssc.200900866] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A sensitive and reliable HPLC-diode-array detector method was developed for the first time to simultaneously determine nine nucleosides and nucleobases including uracil, cytidine, guanine, uridine, thymine, inosine, guanosine, thymidine and adenosine in 13 different Fritillaria species. The analysis was performed on a BaseLine C18 column with a gradient of acetonitrile in water at a flow rate of 0.8 mL/min. The diode-array detector wavelength was set at 260 nm for the UV detection of nucleosides and nucleobases. Satisfactory separation of these compounds was obtained in less than 40 min. The optimized method provided good linear relation (r(2)>0.9995 for all the investigated analytes), satisfactory precision (RSD <1.51%) and good recovery (from 97.64 to 101.16%). The established method was successfully applied to simultaneous determination of nine nucleosides and nucleobases in 61 batches of samples from 13 Fritillaria species collected from different habitats in China, which could be helpful to control the quality of Fritillaria bulbs.
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Affiliation(s)
- Xin-Wei Cao
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, P. R. China
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18
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Wu X, Chen H, Sun J, Peng Y, Liang Y, Wang G, Wu J, Zhang P. Development and validation of a liquid chromatography–mass spectrometry method for the determination of verticinone in rat plasma and its application to pharmacokinetic study. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:2067-71. [DOI: 10.1016/j.jchromb.2010.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 05/26/2010] [Accepted: 06/02/2010] [Indexed: 11/27/2022]
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19
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Chai S, To KK, Lin G. Circumvention of multi-drug resistance of cancer cells by Chinese herbal medicines. Chin Med 2010; 5:26. [PMID: 20653978 PMCID: PMC2920269 DOI: 10.1186/1749-8546-5-26] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Accepted: 07/25/2010] [Indexed: 12/11/2022] Open
Abstract
Multi-drug resistance (MDR) of cancer cells severely limits therapeutic outcomes. A proposed mechanism for MDR involves the efflux of anti-cancer drugs from cancer cells, primarily mediated by ATP-binding cassette (ABC) membrane transporters including P-glycoprotein. This article reviews the recent progress of using active ingredients, extracts and formulae from Chinese medicine (CM) in circumventing ABC transporters-mediated MDR. Among the ABC transporters, Pgp is the most extensively studied for its role in MDR reversal effects. While other MDR reversal mechanisms remain unclear, Pgp inhibition is a criterion for further mechanistic study. More mechanistic studies are needed to fully establish the pharmacological effects of potential MDR reversing agents.
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Affiliation(s)
- Stella Chai
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
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20
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Aguiar GP, Wakabayashi KAL, Luz GF, Oliveira VB, Mathias L, Vieira IJC, Braz-Filho R, Crotti AEM. Fragmentation of plumeran indole alkaloids from Aspidosperma spruceanum by electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2010; 24:295-308. [PMID: 20049889 DOI: 10.1002/rcm.4389] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The fragmentation of six plumeran indole alkaloids (PIAs) previously isolated from Aspidosperma spruceanum has been investigated by electrospray ionization tandem mass spectrometry (ESI-MS/MS) in the positive ion mode. The fragmentation pathways have been established on the basis of MS/MS experiments using fragment ions generated in-source and deuterium-labeled alkaloids as precursor ions and on the basis of accurate mass measurements. Our results demonstrated that the fragmentation routes observed for the protonated PIAs are essentially derived from a pericyclic reaction and from the opening of rings D and E, followed by 1,4-hydrogen rearrangements. Product ions resulting from radical eliminations were also observed, contrary to the 'even-electron rule'. Our data reveals that some product ions from protonated PIAs provide crucial information for the characterization of the acyl substituent at N-1, the methoxyl and hydroxyl groups at the aromatic moiety, and give evidence of an ether bridge between C-18 and C-21. The data reported here were used for the dereplication of these compounds in a stem bark methanolic extract of Aspidosperma spruceanum.
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Affiliation(s)
- Gabriela P Aguiar
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404-600 Franca-SP, Brazil
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21
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Wan CW, Lee YK, Kwok CY, Chan RYK, Yu PHF, Chan SW. A VALIDATED HPLC METHOD WITH DUAL WAVELENGTH DETECTION FOR CHLOROGENIC ACID WITH AN INTERNAL STANDARD IN PLASMA AND ITS APPLICATION IN PHARMACOKINETIC STUDIES IN RATS. J LIQ CHROMATOGR R T 2010. [DOI: 10.1080/10826070903524084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Chun-Wai Wan
- a Open Laboratory of Chirotechnology, Department of Applied Biology and Chemical Technology , The Hong Kong Polytechnic University , Hong Kong, China
| | - Yee-Ki Lee
- a Open Laboratory of Chirotechnology, Department of Applied Biology and Chemical Technology , The Hong Kong Polytechnic University , Hong Kong, China
| | - Ching-Yee Kwok
- a Open Laboratory of Chirotechnology, Department of Applied Biology and Chemical Technology , The Hong Kong Polytechnic University , Hong Kong, China
| | - Robbie Yat-Kan Chan
- a Open Laboratory of Chirotechnology, Department of Applied Biology and Chemical Technology , The Hong Kong Polytechnic University , Hong Kong, China
| | - Peter Hoi-Fu Yu
- a Open Laboratory of Chirotechnology, Department of Applied Biology and Chemical Technology , The Hong Kong Polytechnic University , Hong Kong, China
- b State Key Laboratory of Chinese Medicine and Molecular Pharmacology , Shenzhen, China
| | - Shun-Wan Chan
- a Open Laboratory of Chirotechnology, Department of Applied Biology and Chemical Technology , The Hong Kong Polytechnic University , Hong Kong, China
- b State Key Laboratory of Chinese Medicine and Molecular Pharmacology , Shenzhen, China
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22
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Superoxide dismutase activity and isoenzyme profiles in bulbs of snake's head fritillary in response to cold treatment. ARCH BIOL SCI 2010. [DOI: 10.2298/abs1003553j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The activities and isoenzyme profiles of superoxide dismutase (SOD) in in vitro Fritillaria meleagris bulbs in response to cold treatment (4?C) were investigated. Differences in SOD activity and isoenzyme profiles in bulbs under standard growth conditions, six weeks chilling, as well as seven days after the completion of cold treatment are presented. SOD activity initially decreased but then rapidly increased seven days after cold treatment. Four isoforms of SOD are active under standard and chilling conditions, while three isoforms are presented 7 days after cold treatment. Native gel electrophoresis indicated the presence of mitochondrial and chloroplast localized SODs. .
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23
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Li HJ, Jiang Y, Li P. Characterizing distribution of steroidal alkaloids in Fritillaria spp. and related compound formulas by liquid chromatography–mass spectrometry combined with hierarchial cluster analysis. J Chromatogr A 2009; 1216:2142-9. [DOI: 10.1016/j.chroma.2008.03.093] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2007] [Revised: 03/22/2008] [Accepted: 03/27/2008] [Indexed: 11/29/2022]
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24
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Yun YG, Jeon BH, Lee JH, Lee SK, Lee HJ, Jung KH, Jun CD, Lee SK, Kim EC. Verticinone induces cell cycle arrest and apoptosis in immortalized and malignant human oral keratinocytes. Phytother Res 2008; 22:416-23. [PMID: 18058993 DOI: 10.1002/ptr.2345] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Although verticinone, a major alkaloid isolated from the bulbus of Fritillaria ussuriensis, has been shown to induce differentiation in human leukemia cells, the exact mechanism of this action is not completely understood in cancer cells. Verticinone was used to conduct growth and apoptosis-related experiments for two stages of oral cancer on immortalized human oral keratinocytes (IHOKs) and primary oral cancer cells (HN4). The procedures included MTT assay, three-dimensional (3-D) raft cultures, Western blotting, cell cycle analysis, nuclear staining and cytochrome c expression related to the apoptosis signaling pathway. Verticinone inhibited the proliferation of immortalized and malignant oral keratinocytes in a dose- and time-dependent manner. In 3-D organotypic culture, verticinone-treated cells were less mature than the control cells, displaying low surface keratinization and decreased epithelial thickness. The major mechanism by which verticinone inhibits growth appears to be induced apoptosis and G(0)G(1) cell cycle arrest. This finding is supported by the results of the cell cycle analysis, FITC-Annexin V staining, DNA fragmentation assay and Hoechst 33258 staining. Furthermore, the cytosolic level of cytochrome c was increased, while the expression of Bcl-2 protein was gradually down-regulated and Bax was up-regulated, accompanied by caspase-3 activation. The data suggests that verticinone may induce apoptosis through a caspase pathway mediated by mitochondrial damage in immortalized keratinocytes and oral cancer cells.
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Affiliation(s)
- Young-Gab Yun
- Department of Prescription, College of Oriental Medicine, Wonkwang University, Iksan, South Korea
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25
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Zhou JL, Li P, Li HJ, Jiang Y, Ren MT, Liu Y. Development and validation of a liquid chromatography/electrospray ionization time-of-flight mass spectrometry method for relative and absolute quantification of steroidal alkaloids in Fritillaria species. J Chromatogr A 2008; 1177:126-37. [DOI: 10.1016/j.chroma.2007.11.030] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2007] [Revised: 10/22/2007] [Accepted: 11/12/2007] [Indexed: 11/30/2022]
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26
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Hao X, Chan S, Chen S. Detection of Puerarin and Danshensu in Traditional Chinese Medicinal Preparation Containing Pueraria Lobata and Salvia Miltiorrhiza by HPLC. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070701560942] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Xue‐Na Hao
- a Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing, China
- b State Key Laboratory of Chinese Medicine and Molecular Pharmacology , Shenzhen, China
| | - Shun‐Wan Chan
- b State Key Laboratory of Chinese Medicine and Molecular Pharmacology , Shenzhen, China
- c Open Laboratory of Chirotechnology, Department of Applied Biology and Chemical Technology , The Hong Kong Polytechnic University , Hong Kong
| | - Shi‐Lin Chen
- a Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing, China
- b State Key Laboratory of Chinese Medicine and Molecular Pharmacology , Shenzhen, China
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27
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Mohammadi-Dehcheshmeh M, Khalighi A, Naderi R, Ebrahimie E, Sardari M. Indirect somatic embryogenesis from petal explant of endangered wild population of Fritillaria imperialis. Pak J Biol Sci 2007; 10:1875-1879. [PMID: 19086554 DOI: 10.3923/pjbs.2007.1875.1879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Fritillaria imperialis is an endangered bulbous plant and therefore in vitro micropropagation of this plant will have a great importance for germplasm conservation and commercial production. Petal explants, for the first time, were cultured on media containing various concentrations of plant growth regulators. In addition, the effects of cold pretreatment and light on induction and regeneration of somatic embryogenesis trough callus were studied in detail. Cold pretreatment had inhibitory effects on somatic embryogenesis pathway. Among the different combinations of 6-Bnzylaminopurine (BAP), alpha-naphthaleneacetic acid (NAA) and indole-3-aceticacid (IAA) tested, B5 medium supplemented with 0.1 mg L(-1) BAP + 0.6 mg L(-1) NAA + 0.4 mg L(-1) IAA was the best treatment for bulblet production (6 bulblets per somatic embryogenesis callus). This research presents petal as a reliable material for micropropagation and germplasm conservation of Fritillaria imperialis.
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29
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Lociciro S, Hayoz P, Esseiva P, Dujourdy L, Besacier F, Margot P. Cocaine profiling for strategic intelligence purposes, a cross-border project between France and Switzerland. Forensic Sci Int 2007; 167:220-8. [PMID: 16876353 DOI: 10.1016/j.forsciint.2006.06.052] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2006] [Accepted: 06/14/2006] [Indexed: 11/17/2022]
Abstract
Optimisation and harmonisation of analytical and statistical methodology have been carried out between two forensic laboratories (Lausanne, CH and Lyon, F) in order to provide drug intelligence for cross-border cocaine seizures. The aim was to improve the gas chromatographic analysis of cocaine samples for profiling. Some important validation parameters were tested to verify the developed method and demonstrate its profiling capacity: the selectivity of the method with retention time reproducibility, the choice of a derivatisation agent improving the chromatography (MSTFA, BSA, TMSI and BSTFA+TMCS 1%), the cutting agents influence (matrix effect), the influence of the sample storage conditions and the sample quantity to weigh for analyses. Eight main alkaloids, which represent the sample signature, have been selected: ecgonine methyl ester, ecgonine, tropacocaine, benzoylecgonine, norcocaine, cis- and trans-cinnamoylcocaine and 3,4,5-trimethoxycocaine. Their stability in the solvent used (CHCl(3)/pyridine) was demonstrated. In order to reach the final objective, which is the comparison of samples seized and analyzed in two different laboratories, the harmonisation of the profiling method between the two laboratories had to be ensured and is the subject of ongoing research.
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Affiliation(s)
- S Lociciro
- Institut de Police Scientifique, Ecole des Sciences Criminelles, Université de Lausanne, BCH, 1015 Lausanne-Dorigny, Switzerland
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30
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Wang S, Yu J, Gao W, Pang J, Yu J. Using X-ray diffractometry for identification of Fritillaria preparations according to geographical origin. Pharm Chem J 2006. [DOI: 10.1007/s11094-006-0196-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Studies on the morphological, thermal and crystalline properties of starches separated from medicinal plants. J FOOD ENG 2006. [DOI: 10.1016/j.jfoodeng.2005.05.041] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Shujun W, Wenyuan G, Wei J, Peigen X. Crystallography, morphology and thermal properties of starches from four different medicinal plants of Fritillaria species. Food Chem 2006. [DOI: 10.1016/j.foodchem.2005.03.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Osete-Cortina L, Doménech-Carbó MT, Mateo-Castro R, Gimeno-Adelantado JV, Bosch-Reig F. Identification of diterpenes in canvas painting varnishes by gas chromatography–mass spectrometry with combined derivatisation. J Chromatogr A 2004; 1024:187-94. [PMID: 14753721 DOI: 10.1016/j.chroma.2003.10.066] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A derivatisation method that combines the formation of ethyl esters from the carboxylic groups and trimethylsilyl ethers from hydroxyl groups of the components of diterpenic resins is presented in this paper. This methodology involves two experimental steps: (1) formation of ethyl esters using ethyl chloroformate; and (2) the esterified compounds are lead to react with trimethylsilylimidazole to form the corresponding trimethylsilyl ethers. The main advantage of the proposed method is the possibility of performing simultaneously the analysis of amino acids from proteins, fatty acids from drying oils, and diterpenic compounds from natural resins usually found in works of art. This methodology is of considerable interest due to the requirements of minimum sampling that usually involves the analysis of works of art. A chemometric study has been developed to adjust the optimal working conditions of the proposed derivatisation method in which chromatographic peak areas of the larixyl acetate derivative and the abietic acid derivative referred to n-hexadecane as internal standard have been compared. Samples of Venetian turpentine naturally aged have been used in this study. Finally, the efficiency of the proposed derivatisation method has been tested on other diterpenic resins and pigments commonly used in fine arts such as Strasbourg turpentine, Canada balsam, colophony, copper resinate and a sample from a Renaissance Altarpiece.
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Affiliation(s)
- L Osete-Cortina
- Department of Conservation and Restoration of Cultural Heritage, Polytechnic University of Valencia, Camino de Vera 14, 46022 Valencia, Spain
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34
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Li P, Zeng LJ, Li SL, Lin G. The extraction of imperialine and imperialine-3 beta-glucoside from Fritillaria pallidiflora Schrenk and quantitative determination by HPLC-evaporative light scattering detection. PHYTOCHEMICAL ANALYSIS : PCA 2002; 13:158-161. [PMID: 12099106 DOI: 10.1002/pca.635] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The extraction procedure and quantitative determination by HPLC-evaporative light scattering detection (ELSD) of the main bioactive components, namely, imperialine (1) and imperialine-3 beta-glucoside (2), of bulbs of Fritillaria pallidiflora Schrenk have been investigated. The most efficient method for the simultaneous extraction of 1 and 2 involved pre-treatment of the bulb powder with ammonia, followed by reflux with dichloromethane:methanol at 90 degrees C for 4 h. Simultaneous determination of non-chromophoric 1 and 2 by HPLC-ELSD employed a Kromasil C18 column eluted with acetonitrile:water:diethylamine. The assay was accurate and reproducible with an overall variation lower than 4% and a sample recovery higher than 98%. The methods described have been successfully used to evaluate the quality of three batches of the crude traditional Chinese medicinal herb derived from the bulbs of F. pallidiflora.
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Affiliation(s)
- Ping Li
- Department of Pharmacognosy, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
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35
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Derivatization Reactions for Analytes with Various Functional Groups. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0301-4770(02)80020-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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36
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Lin G, Li P, Li SL, Chan SW. Chromatographic analysis of Fritillaria isosteroidal alkaloids, the active ingredients of Beimu, the antitussive traditional Chinese medicinal herb. J Chromatogr A 2001; 935:321-38. [PMID: 11762784 DOI: 10.1016/s0021-9673(01)01258-4] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Bulbus Fritillariae derived from plants of various Fritillaria species is the most commonly used antitussive traditional Chinese medicinal herb and is called Beimu. Herbs derived from similar and/or different species of Fritillaria are also used in Japan and Turkey as traditional or folk medicines. Isosteroidal alkaloids are the main bioactive ingredients in Fritillaria species. As the contents and structure types of these bioactive alkaloids vary in different Fritillaria species, quality control of these active principles in herbal Beimu is very important to ensure its safe and effective clinical use. This review describes the development of chromatographic analyses for the simultaneous qualitative and quantitative determination of the main bioactive Fritillaria isosteroidal alkaloids in herbal and biological samples. The recently developed direct HPLC-evaporative light scattering detection method is the most simple, selective and sensitive assay, and is readily used as a suitable quality control method for the analysis of the active principles of herbal Beimu.
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Affiliation(s)
- G Lin
- Department of Pharmacology, Faculty of Medicine, The Chinese University of Hong Kong, SAR.
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37
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Li SL, Lin G, Chan SW, Li P. Determination of the major isosteroidal alkaloids in bulbs of Fritillaria by high-performance liquid chromatography coupled with evaporative light scattering detection. J Chromatogr A 2001; 909:207-14. [PMID: 11269520 DOI: 10.1016/s0021-9673(00)01083-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new direct HPLC analytical method using evaporative light scattering detection coupled with a low-temperature adapter for the simultaneous determination of the major biologically active isosteroidal alkaloids in Bulbus Fritillariae, a commonly used antitussive traditional Chinese medicinal (TCM) herb, has been developed. The simultaneous separation of eight Fritillaria alkaloids was achieved on a reversed-phase C8 column with an isocratic mobile phase system consisting of acetonitrile-methanol-water (66.5:3.5:30, v/v) containing 0.006% triethylamine. This method provides good reproducibility and sensitivity for the quantification of six major isosteroidal alkaloids, namely peimissine, verticine, verticinone, imperialine, isoverticine and ebeiedine in different Fritillaria species with overall intra- and inter-day precision and accuracy of less than 11% and higher than 90%, respectively. The assay was successfully utilized to quantify the major biologically active alkaloids in five Fritillaria species. The results demonstrate that this method is simple, selective, and suitable for the quality control of this commonly used antitussive TCM herb, Bulbus Fritillariae. reserved.
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Affiliation(s)
- S L Li
- Department of Pharmacology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
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38
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Chan SW, Li SL, Lin G, Li P. Pharmacokinetic study and determination of imperialine, the major bioactive component in antitussive Fritillaria cirrhosa, in rat by high-performance liquid chromatography coupled with evaporative light-scattering detector. Anal Biochem 2000; 285:172-5. [PMID: 10998280 DOI: 10.1006/abio.2000.4756] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- S W Chan
- Department of Pharmacology, Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, China
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39
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Song-Lin L, Li P, Lin G, Chan SW, Ho YP. Simultaneous determination of seven major isosteroidal alkaloids in bulbs of Fritillaria by gas chromatography. J Chromatogr A 2000; 873:221-8. [PMID: 10757299 DOI: 10.1016/s0021-9673(00)00049-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The present paper describes the development of a most simple, sensitive, and specific gas chromatographic method to date, for the direct determination of seven major bioactive isosteroidal alkaloids, namely ebeiedine, ebeiedinone, ebeienine, hupehenine, isoverticine, verticine, verticinone and imperialine, in Fritillaria species, a commonly used antitussive traditional Chinese medicinal (TCM) herb. In the present study, a commercially available Supelco SAC-5 capillary column (30 m x 0.25 mm, 0.25 microm) specifically designed for the analysis of steroids was utilized for the direct determination of Fritillaria alkaloids. Calibration curves were obtained by spiking authentic compounds and the internal standard (solanidine) into herbal samples prior to extraction. Extraction was conducted simply by shaking the pre-alkalized diethyl ether solution (5.0 ml) containing dried herb (0.1 g) for 2 h. All calibration curves showed good linear regressions (r2>0.995) within test ranges. The assay was reproducible and accurate with the overall intra- and inter-day variation and accuracy of less than 10% and more than 90%, respectively. The developed GC method was successfully utilized to analyze seven major bioactive alkaloids in seven Fritillaria species, and the results demonstrate that this direct GC analytical method is suitable for the quality control of this commonly used antitussive TCM herb.
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Affiliation(s)
- L Song-Lin
- Department of Pharmacology, Faculty of Medicine, Chinese University of Hong Kong, Shatin, NT, SAR
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