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Zhou R, Liu W, Li J, Du K, He J, Yao Y, Chang Y. Online preconcentration and determination of five alkaloids in Yangxinshi tablet by large-volume sample stacking and micelle to solvent stacking in cyclodextrin-modified electrokinetic chromatography. Biomed Chromatogr 2024; 38:e5876. [PMID: 38600635 DOI: 10.1002/bmc.5876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/19/2024] [Accepted: 03/17/2024] [Indexed: 04/12/2024]
Abstract
The two-step preconcentration technique consisting of large-volume sample stacking (LVSS) and micelle to solvent stacking (MSS) in cyclodextrin-modified electrokinetic chromatography (CDEKC) was developed for the analysis of five cationic alkaloids in complex Chinese herbal prescriptions. Relevant parameters affecting separation and stacking performance were optimized separately. Under the optimal LVSS-MSS-CDEKC conditions, less analysis time and organic solvent were required, and the enhancement factors of analytes ranged from 12 to 15 compared with the normal CDEKC separation mode. Further, all validation results demonstrated good applicability and multiple alkaloids (epiberberine, dehydrocorydaline, jatrorrhizine, coptisine and berberine) in Yangxinshi tablet (YXST) have been simultaneously determined. This approach presents powerful potential for the determination of multiple components in complex preparations of Chinese medicine.
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Affiliation(s)
- Rui Zhou
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Wenping Liu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jin Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Kunze Du
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jun He
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yaqi Yao
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yanxu Chang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Waffo Tchounga CA, Sacré PY, Ravinetto R, Lieberman M, Hamuli Ciza P, Ngono Mballa R, Ziemons E, Hubert P, Djang’eing’a Marini R. Usefulness of medicine screening tools in the frame of pharmaceutical post-marketing surveillance. PLoS One 2023; 18:e0289865. [PMID: 37566594 PMCID: PMC10420354 DOI: 10.1371/journal.pone.0289865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
The negative consequences of Substandard and falsified (SF) medicines are widely documented nowadays and there is still an urgent need to find them in more efficient ways. Several screening tools have been developed for this purpose recently. In this study, three screening tools were used on 292 samples of ciprofloxacin and metronidazole collected in Cameroon. Each sample was then analyzed by HPLC and disintegration tests. Seven additional samples from the nitro-imidazole (secnidazole, ornidazole, tinidazole) and the fluoroquinolone (levofloxacin, ofloxacin, norfloxacin, moxifloxacin) families were analyzed to mimic falsified medicines. Placebo samples that contained only inert excipients were also tested to mimic falsified samples without active pharmaceutical ingredient (API). The three screening tools implemented were: a simplified visual inspection checklist, a low-cost handheld near infrared (NIR) spectrophotometer and paper analytical devices (PADs). Overall, 61.1% of the samples that failed disintegration and assay tests also failed the visual inspection checklist test. For the handheld NIR, one-class classifier models were built to detect the presence of ciprofloxacin and metronidazole, respectively. The APIs were correctly identified in all the samples with sensitivities and specificities of 100%. However, the importance of a representative and up-to-date spectral database was underlined by comparing models built with different calibration set spanning different variability spaces. The PADs were used only on ciprofloxacin samples and detected the API in all samples in which the presence of ciprofloxacin was confirmed by HPLC. However, these PADs were not specific to ciprofloxacin since they reacted like ciprofloxacin to other fluoroquinolone compounds. The advantages and drawbacks of each screening tool were highlighted. They are promising means in the frame of early detection of SF medicines and they can increase the speed of decision about SF medicines in the context of pharmaceutical post-marketing surveillance.
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Affiliation(s)
- Christelle Ange Waffo Tchounga
- Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, University of Liege (ULiege), CIRM, Liège, Belgium
- Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon
| | - Pierre-Yves Sacré
- Department of Pharmacy, University of Liege (ULiege), CIRM, Research Support Unit in Chemometrics, Liège, Belgium
| | - Raffaella Ravinetto
- Department of Public Health, Institute of Tropical Medicine Antwerp, Antwerp, Belgium
- School of Public Health, University of the Western Cape, Cape Town, South Africa
| | - Marya Lieberman
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, United States of America
| | - Patient Hamuli Ciza
- Faculty of Pharmaceutical Sciences, University of Kinshasa, Lemba, Kinshasa, Democratic Republic of the Congo
| | - Rose Ngono Mballa
- Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon
- Laboratoire National de Contrôle des Médicaments et Expertise (LANACOME), Yaoundé, Cameroon
| | - Eric Ziemons
- Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, University of Liege (ULiege), CIRM, Liège, Belgium
| | - Philippe Hubert
- Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, University of Liege (ULiege), CIRM, Liège, Belgium
| | - Roland Djang’eing’a Marini
- Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, University of Liege (ULiege), CIRM, Liège, Belgium
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Van Schepdael A. Capillary electrophoresis as a simple and low-cost analytical tool for use in money-constrained situations. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Wang Y, Zeng Z, Yang L, Zeng H, Li Y, Pu Q, Zhang M. Three-in-One Detector by 3D Printing: Simultaneous Contactless Conductivity, Ultraviolet Absorbance, and Laser-Induced Fluorescence Measurements for Capillary Electrophoresis. Anal Chem 2023; 95:2146-2151. [PMID: 36642960 DOI: 10.1021/acs.analchem.2c04388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We describe a 3-in-1 detector for simultaneous contactless conductivity (C4D), ultraviolet absorbance (UV-AD), and laser-induced fluorescence (LIF) measurements on a single detection point for capillary electrophoresis (CE). A key component of the detector was a rectangular detector head that was assembled with four 3D-printed parts. Two parts covering the detector head to function as a Faraday cage were fused deposition modeling printed using an electrically conductive material. The other two parts in between the conductive parts were stereolithography (SLA) printed with high-resolution (50 μm) constructions on the surface. After assembling the two SLA printed parts, several cavities were built with the surface constructions. Two electrodes and a Faraday shield for C4D were cast by injecting molten Wood's metal into the cavities. For UV-AD, a slit (100 μm width) was created by putting together two grooves (50 μm depth) on the surface of the SLA printed parts. A 255 nm UV-LED was used as the light source. The effective path length and stray light for a 50 μm id capillary were 39 μm and 13%, which were superior to those of other reported 3D-printed AD detectors. Confocal LIF detection was conducted by using an objective lens to focus the laser on the capillary via a through-hole. The detector was used to detect model analytes, including inorganic and organic ions, and fluorescein isothiocyanate labeled amino acids in a signal-run CE separation. In detecting fluorescein, LODs were 1.3 μM (C4D), 2.0 μM (UV-AD), and 1 nM (LIF). The calibration ranges covered from 0.01 μM to 500 μM.
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Affiliation(s)
- Yingchun Wang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
| | - Zihan Zeng
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
| | - Liye Yang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
| | - Hui Zeng
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
| | - Yan Li
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
| | - Qiaosheng Pu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Min Zhang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
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Nguyen QH, Dang THM, Quynh Le TP, Luu THT, Dinh TD, Mai TK, Nguyen TMT, Nguyen TAH, Mai TD. Inexpensive and simple tool for quality control of nutraceutical and tonic products with capillary electrophoresis and contactless conductivity detection: Some developments in Vietnam. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2022.104882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Novel developments in capillary electrophoresis miniaturization, sampling, detection and portability: An overview of the last decade. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Characterization of the Interaction of Polymeric Micelles with siRNA: A Combined Experimental and Molecular Dynamics Study. Polymers (Basel) 2022; 14:polym14204409. [PMID: 36297986 PMCID: PMC9611052 DOI: 10.3390/polym14204409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 11/16/2022] Open
Abstract
The simulation of large molecular systems remains a daunting challenge, which justifies the exploration of novel methodologies to keep computers as an ideal companion tool for everyday laboratory work. Whole micelles, bigger than 20 nm in size, formed by the self-assembly of hundreds of copolymers containing more than 50 repeating units, have until now rarely been simulated, due to a lack of computational power. Therefore, a flexible amphiphilic triblock copolymer (mPEG45-α-PLL10-PLA25) containing a total of 80 repeating units, has been emulated and synthesized to embody compactified nanoconstructs of over 900 assembled copolymers, sized between 80 and 100 nm, for siRNA complexing purposes. In this study, the tailored triblock copolymers containing a controlled number of amino groups, were used as a support model to address the binding behavior of STAT3-siRNA, in the formation of micelleplexes. Since increasingly complex drug delivery systems require an ever more optimized physicochemical characterization, a converging description has been implemented by a combination of experimentation and computational simulations. The computational data were advantageous in allowing for the assumption of an optimal N/P ratio favoring both conformational rigidifications of STAT3-siRNA with low competitive phenomena at the binding sites of the micellar carriers. These calculations were consistent with the experimental data showing that an N/P ratio of 1.5 resulted in a sufficient amount of complexed STAT3-siRNA with an electrical potential at the slipping plane of the nanopharmaceuticals, close to the charge neutralization.
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MA Y, HU Y, ZHENG L, CHEN L, ZHAO X, QU F. Annual review of capillary electrophoresis technology in 2021. Se Pu 2022; 40:591-599. [PMID: 35791597 PMCID: PMC9404112 DOI: 10.3724/sp.j.1123.2022.03040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
该文为2021年毛细管电泳(capillary electrophoresis, CE)技术年度回顾。归纳总结了以“capillary electrophoresis-mass spectrometry”或“capillary isoelectric focusing”或“micellar electrokinetic chromatography”或“capillary electrophoresis”为关键词在ISI Web of Science数据库中进行主题检索(排除“capillary electrochromatography”“microchip”和“capillary monolithic column”)得到的2021年CE技术相关研究论文291篇,以及中文期刊《色谱》和《分析化学》中相关研究论文9篇。重点介绍了影响因子(IF)≥10.0的Coordination Chemistry Reviews, Angewandte Chemie-International Edition, Nature Protocols, TrAC-Trends in Analytical Chemistry, Signal Transduction and Targeted Therapy发表的7篇论文;以及影响因子5~10之间的代表性期刊Analytical Chemistry, Analytica Chimica Acta, Talanta和Food Chemistry的42篇论文;对影响因子小于5但CE技术报道较为集中的Journal of Chromatography A和Electrophoresis,国内重要的中文期刊《色谱》和《分析化学》中的代表性工作进行了概述。该文根据国际通用学术水平评价指标之一的影响因子选择期刊,结合期刊发表CE论文代表性工作进行介绍,便于读者快速了解毛细管电泳技术在过去一年的重要研究进展。
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Hong T, Liu X, Zhou Q, Liu Y, Guo J, Zhou W, Tan S, Cai Z. What the Microscale Systems "See" In Biological Assemblies: Cells and Viruses? Anal Chem 2021; 94:59-74. [PMID: 34812604 DOI: 10.1021/acs.analchem.1c04244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tingting Hong
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Xing Liu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Qi Zhou
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Yilian Liu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Jing Guo
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Wenhu Zhou
- Xiangya School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan 410013, China
| | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan 410013, China.,Jiangsu Dawning Pharmaceutical Co., Ltd., Changzhou, Jiangsu 213100, China
| | - Zhiqiang Cai
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China.,Jiangsu Dawning Pharmaceutical Co., Ltd., Changzhou, Jiangsu 213100, China
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