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Li Y, Zhou J, Gu J, Shao Q, Chen Y. Enhanced antibacterial activity of levofloxacin/hydroxypropyl-β-cyclodextrin inclusion complex: In vitro and in vivo evaluation. Colloids Surf B Biointerfaces 2022; 215:112514. [PMID: 35490541 DOI: 10.1016/j.colsurfb.2022.112514] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/05/2022] [Accepted: 04/20/2022] [Indexed: 10/18/2022]
Abstract
Levofloxacin is the levo-enantiomer of ofloxacin (a fluoroquinolone class of antibacterial drug). Cyclodextrins (CDs) including hydroxypropyl-β-cyclodextrin (HPβCD) are generally used as a chiral selector for the enantioseparation of some drugs including levofloxacin or as a drug/food nanocarrier for the efficacy improvement of many pharmaceuticals. We hypothesized that the cyclodextrin inclusion is potentially able to further improve the antibacterial activity of levofloxacin. To test this hypothesis, the levofloxacin/HPβCD inclusion complex was prepared by the freeze-drying method and characterized by phase solubility diagram, differential scanning calorimetry (DSC), X-ray diffractometry (XRD), UV-Vis spectrophotometer, and 1H NMR spectroscopy, confirming the successful HPβCD inclusion of levofloxacin. The in vitro antibacterial effects of HPβCD, levofloxacin, and the levofloxacin/HPβCD inclusion complex against four different bacterial strains in liquid media and on agar plates were determined/compared (an MIC90 of 0.5-1.0 μg/mL for the inclusion complex compared with that of 1.0-2.0 μg/mL for free levofloxacin in liquid). Moreover, the in vivo antibacterial effects of levofloxacin and levofloxacin/HPβCD inclusion complex were tested by using a skin scald model in mice infected with Staphylococcus aureus, and decreased amounts of both bacteria and leukocytes were detected in scalded skin after the inclusion complex treatment. The data revealed that the levofloxacin/HPβCD inclusion complex had an enhanced antibacterial activity compared with free levofloxacin. It implies that cyclodextrins (e.g. HPβCD) may have a beneficial role when using as a chiral selector or as a drug nanocarrier for levofloxacin and that the levofloxacin/HPβCD inclusion complex has the potential of being developed into a pharmaceutical for antibacterial therapies.
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Affiliation(s)
- Yuanfang Li
- Jiangxi Key Laboratory for Microscale interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Jinhua Zhou
- Jiangxi Key Laboratory for Microscale interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Jiaxuan Gu
- Jiangxi Key Laboratory for Microscale interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Qingqing Shao
- Jiangxi Key Laboratory for Microscale interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Yong Chen
- Jiangxi Key Laboratory for Microscale interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi 330031, PR China.
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2
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Recent advances in chiral analysis for biosamples in clinical research and forensic toxicology. Bioanalysis 2021; 13:493-511. [PMID: 33719527 DOI: 10.4155/bio-2020-0330] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This article covers current methods and applications in chiral analysis from 2010 to 2020 for biosamples in clinical research and forensic toxicology. Sample preparation for aqueous and solid biological samples prior to instrumental analysis were discussed in the article. GC, HPLC, capillary electrophoresis and sub/supercritical fluid chromatography provide the efficient tools for chiral drug analysis coupled to fluorescence, UV and MS detectors. The application of chiral analysis is discussed in the article, which involves differentiation between clinical use and drug abuse, pharmacokinetic studies, pharmacology/toxicology evaluations and chiral inversion. Typical chiral analytes, including amphetamines and their analogs, anesthetics, psychotropic drugs, β-blockers and some other chiral compounds, are also reviewed.
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Ansorge M, Dubský P, Ušelová K. Into the theory of the partial-filling affinity capillary electrophoresis and the determination of apparent stability constants of analyte-ligand complexes. Electrophoresis 2018; 39:742-751. [DOI: 10.1002/elps.201700385] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/21/2017] [Accepted: 11/21/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Martin Ansorge
- Charles University in Prague, Faculty of Science; Department of Physical and Macromolecular Chemistry; Prague Czech Republic
| | - Pavel Dubský
- Charles University in Prague, Faculty of Science; Department of Physical and Macromolecular Chemistry; Prague Czech Republic
| | - Kateřina Ušelová
- Charles University in Prague, Faculty of Science; Department of Physical and Macromolecular Chemistry; Prague Czech Republic
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Ali I, Suhail M, Asnin L. Chiral separation of quinolones by liquid chromatography and capillary electrophoresis. J Sep Sci 2017; 40:2863-2882. [PMID: 28510993 DOI: 10.1002/jssc.201700200] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/02/2017] [Accepted: 05/02/2017] [Indexed: 12/29/2022]
Abstract
The quinolones are derivatives of oxoquinolines and mostly known for their antibacterial and antiviral activities. Many quinolones are chiral compounds having asymmetric centers and important due to their enantioselective biological activities. In order to study the biological activities of quinolone enantiomers, to control the manufacturing of homochiral drugs and to prepare necessary quantities of pure enantiomers for preclinical or clinical trials, respective chiral separation methods are urgently needed. In this context, the present review discusses chromatographic and electrophoretic methods for the enantioseparation of chiral quinolones and provides some useful information on their physical and pharmaceutical properties. The drawbacks of currently used techniques are revealed and ways to overcome them are outlined. Moreover, recommendations for an optimal choice of a separation protocol are given.
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Affiliation(s)
- Imran Ali
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi, India
| | - Mohd Suhail
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi, India
| | - Leonid Asnin
- Perm National Research Polytechnic University, Perm, Russia
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Fu Q, Zhang K, Gao D, Wang L, Yang F, Liu Y, Xia Z. Escherichia coli adhesive coating as a chiral stationary phase for open tubular capillary electrochromatography enantioseparation. Anal Chim Acta 2017; 969:63-71. [PMID: 28411631 DOI: 10.1016/j.aca.2017.03.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 03/03/2017] [Accepted: 03/20/2017] [Indexed: 10/19/2022]
Abstract
Bacteria, the microorganism with intrinsic chirality, have numerous fascinating chiral phenomena such as various chirality-triggered biological processes and behaviors. Herein, bacteria were firstly explored as novel chiral stationary phases in open-tubular capillary electrochromatography (OT-CEC) for enantioseparation of fluoroquinolone enantiomers and simultaneous separation of six fluoroquinolone antibiotics. The model strain, i.e. non-pathogenic Escherichia coli (E. coli) DH5α, was adhered onto the inner surface of positively charged polyethyleneimine (PEI) modified capillaries based on the bacterial adhesion characteristics and strong electrostatic interaction. The morphology and thickness of the bacteria adhesive coatings in the capillary were characterized by field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). Baseline separation of ofloxacin and partial separation of lomefloxacin enantiomers could be achieved by the E. coli coated columns. The preparation parameters including the coating time and concentration of bacteria that affecting the chiral resolution were intensively investigated. The electrophoretic parameters, including pH, buffer concentration and applied voltage, were also optimized. The developed method was validated (linearity, LOD, LOQ, intra-day, inter-day and column-to-column repeatability and recovery) and successfully utilized for the quantitative analysis of ofloxacin enantiomers in the ofloxacin tablets. Moreover, only a slight decrease in the separation efficiency was observed after 90 consecutive runs on the E. coli@capillary. These results demonstrated that bacteria are promising stationary phases for chiral separation in CEC.
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Affiliation(s)
- Qifeng Fu
- Department of Medicinal Chemistry, Southwest Medical University, Luzhou 646000, China.
| | - Kailian Zhang
- Department of Medicinal Chemistry, Southwest Medical University, Luzhou 646000, China
| | - Die Gao
- Department of Medicinal Chemistry, Southwest Medical University, Luzhou 646000, China
| | - Lujun Wang
- Department of Medicinal Chemistry, Southwest Medical University, Luzhou 646000, China
| | - Fengqing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Yao Liu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Zhining Xia
- Innovative Drug Research Centre and School of Pharmaceutical Sciences, Chongqing University, Chongqing 400030, China; School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China.
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6
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Wang FQ, Zhang Q, Li CH, Wang YZ, Hu YJ, Zhang QH, Xia ZN, Yang FQ. Evaluation of affinity interaction between small molecules and platelets by open tubular affinity capillary electrochromatography. Electrophoresis 2015; 37:736-43. [DOI: 10.1002/elps.201500414] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/21/2015] [Accepted: 10/29/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Feng-Qin Wang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Qian Zhang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Chun-Hong Li
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Yin-Zhen Wang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Yuan-Jia Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences; University of Macau; Macao P. R. China
| | - Qi-Hui Zhang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Zhi-Ning Xia
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
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7
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Kaale E, Höllein L, Holzgrabe U. Development and validation of a generic stability-indicating MEEKC method for five fluoroquinolone antibiotics. Electrophoresis 2015; 36:2736-2744. [DOI: 10.1002/elps.201500025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 04/21/2015] [Accepted: 04/21/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Eliangiringa Kaale
- University of Würzburg; Institute of Pharmacy and Food Chemistry; Würzburg Germany
- School of Pharmacy; Muhimbili University of Health and Allied Sciences; Dar Es Salaam Tanzania
| | - Ludwig Höllein
- University of Würzburg; Institute of Pharmacy and Food Chemistry; Würzburg Germany
| | - Ulrike Holzgrabe
- University of Würzburg; Institute of Pharmacy and Food Chemistry; Würzburg Germany
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8
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Wang B, Chai W, Ding G. The application of functional silica nanoparticles to fulfill the rapid and improved enantioselective capillary electrophoresis separation of amino acid derivatives. J Sep Sci 2014; 38:332-8. [DOI: 10.1002/jssc.201401016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 10/23/2014] [Accepted: 11/02/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Bingxiang Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency; School of Pharmaceutical Science and Technology, Tianjin University; Tianjin P.R. China
| | - Weibo Chai
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency; School of Pharmaceutical Science and Technology, Tianjin University; Tianjin P.R. China
| | - Guosheng Ding
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency; School of Pharmaceutical Science and Technology, Tianjin University; Tianjin P.R. China
- Analysis Center; Tianjin University; Tianjin P.R. China
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9
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Chiral selectors in CE: Recent developments and applications (2012-mid 2014). Electrophoresis 2014; 36:101-23. [DOI: 10.1002/elps.201400310] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/25/2014] [Accepted: 09/26/2014] [Indexed: 12/19/2022]
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10
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Fu Q, Yang F, Chen H, Xia Z. Enhancement of enantioselectivity in chiral capillary electrophoresis using hydroxypropyl-beta-cyclodextrin as chiral selector under molecular crowding conditions induced by dextran or dextrin. Electrophoresis 2014; 35:2938-45. [DOI: 10.1002/elps.201400116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 05/27/2014] [Accepted: 06/19/2014] [Indexed: 01/31/2023]
Affiliation(s)
- Qifeng Fu
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Fengqing Yang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Hua Chen
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Zhining Xia
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
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11
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Jáč P, Scriba GKE. Recent advances in electrodriven enantioseparations. J Sep Sci 2012; 36:52-74. [DOI: 10.1002/jssc.201200836] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Revised: 09/22/2012] [Accepted: 09/22/2012] [Indexed: 01/05/2023]
Affiliation(s)
- Pavel Jáč
- Department of Pharmaceutical Chemistry; School of Pharmacy; Friedrich Schiller University; Jena; Germany
| | - Gerhard K. E. Scriba
- Department of Pharmaceutical Chemistry; School of Pharmacy; Friedrich Schiller University; Jena; Germany
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