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Yang Q, Qi Y, Zhou J, Chen Y, Liang C, Liu Z, Zhang X, Wang A. Development of a fluorescent immunochromatographic assay based on quantum dots for the detection of fleroxacin. RSC Adv 2021; 11:22005-22013. [PMID: 35480815 PMCID: PMC9034125 DOI: 10.1039/d1ra03065e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/06/2021] [Indexed: 11/21/2022] Open
Abstract
Fleroxacin (FLE) is a broad-spectrum fluoroquinolone antibiotic widely used in animal husbandry, veterinary medicine and aquaculture. Eating animal-derived foods with FLE residues can cause allergies, poisoning or drug resistance. The water-soluble QDs (CdSe/ZnS) and anti-FLE monoclonal antibody (mAb) were used to prepare a fluorescent probe by the method of N-(3-dimethylaminopropyl)-N'-ethylcarbodimide hydrochloride (EDC) activation. The fluorescent probe was characterized by dynamic light scattering (DLS). The better bioactivity and stability of the fluorescent probe was obtained under the pH value of 8.0, the molecule molar ratio of EDC (1 : 2000) and anti-FLE monoclonal antibodies (1 : 10). The control line (C line) and test line (T line) of a nitrocellulose (NC) filter membrane were sprayed with SPA (0.05 mg mL-1) and FLE-OVA (1.4 mg mL-1) solutions with optimal concentration, respectively. A novel method of fluorescent immunochromatographic assay based on quantum dots (QDs-ICA) in this work exhibited good accuracy, reproductivity and excellent specificity under the optimal experimental conditions. Compared with the traditional method for the visual detection of FLE, the developed QDs-ICA can successfully determine FLE residues in pork meat with a better cut-off value of 2.5 ng mL-1. The QDs-ICA could be adapted for the rapid preliminary detection of FLE residues in pork meat for the first time.
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Affiliation(s)
- Qingbao Yang
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
| | - Yanhua Qi
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
| | - Jingming Zhou
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
| | - Yumei Chen
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
| | - Chao Liang
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
| | - Zhanxiang Liu
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
| | - Xiaoli Zhang
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
| | - Aiping Wang
- School of Life Sciences, Zhengzhou University Zhengzhou 450001 Henan China
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Walden DM, Khotimchenko M, Hou H, Chakravarty K, Varshney J. Effects of Magnesium, Calcium, and Aluminum Chelation on Fluoroquinolone Absorption Rate and Bioavailability: A Computational Study. Pharmaceutics 2021; 13:594. [PMID: 33919271 PMCID: PMC8143323 DOI: 10.3390/pharmaceutics13050594] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/16/2021] [Accepted: 04/16/2021] [Indexed: 01/01/2023] Open
Abstract
Fluoroquinolones (FQs) are a widespread class of broad-spectrum antibiotics prescribed as a first line of defense, and, in some cases, as the only treatment against bacterial infection. However, when administered orally, reduced absorption and bioavailability can occur due to chelation in the gastrointestinal tract (GIT) with multivalent metal cations acquired from diet, coadministered compounds (sucralfate, didanosine), or drug formulation. Predicting the extent to which this interaction reduces in vivo antibiotic absorption and systemic exposure remains desirable yet challenging. In this study, we focus on quinolone interactions with magnesium, calcium and aluminum as found in dietary supplements, antacids (Maalox) orally administered therapies (sucralfate, didanosine). The effect of FQ-metal complexation on absorption rate was investigated through a combined molecular and pharmacokinetic (PK) modeling study. Quantum mechanical calculations elucidated FQ-metal binding energies, which were leveraged to predict the magnitude of reduced bioavailability via a quantitative structure-property relationship (QSPR). This work will help inform clinical FQ formulation design, alert to possible dietary effects, and shed light on drug-drug interactions resulting from coadministration at an earlier stage in the drug development pipeline.
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Affiliation(s)
| | | | | | | | - Jyotika Varshney
- VeriSIM Life, San Francisco, CA 94104, USA; (D.M.W.); (M.K.); (H.H.); (K.C.)
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Liu TY, Qu XL, Yan B. A highly sensitive and selective "turn-on" fluorescent probe for detection of fleroxacin in human serum and urine based on a lanthanide functionalized metal-organic framework. Dalton Trans 2019; 48:17945-17952. [PMID: 31793573 DOI: 10.1039/c9dt03830b] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cation exchange, a facile and non-destructive post-synthetic modification method, is applied to [(Me)4N]2[Pb6K6(m-BDC)9(OH)2]·H2O (1) (1,3-H2BDC = 1,3-benzenedicarboxylic acid) to prepare a series of lanthanide functionalized metal-organic frameworks. The fluorescence properties of Ln3+@1 (Ln = Eu, Tb, Sm and Dy) are investigated. The results demonstrate that the framework of 1 is capable of sensitizing both Eu3+ and Tb3+ ions effectively. Remarkably, the rapid and stable fluorescence sensitization of Eu3+@1 can be observed in the presence of fleroxacin in aqueous solution, indicating that the hybrid system can be designed as a highly sensitive and selective probe for fleroxacin. As a novel "turn-on" fluorescent probe, Eu3+@1 is regarded as a promising candidate for applications in clinical diagnosis, due to its merits of high antidisturbance, chemical stability and a low detection limit (43.91 ng mL-1). In this paper, the practical application of luminescent Eu3+@1 is highlighted, and its possible sensing mechanism is also described.
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Affiliation(s)
- Tian-Yu Liu
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China.
| | - Xiang-Long Qu
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China.
| | - Bing Yan
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China. and School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China
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Interaction of the antibiotic norfloxacin with ionic micelles: pH-dependent binding. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2014; 43:477-83. [DOI: 10.1007/s00249-014-0978-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/10/2014] [Accepted: 07/18/2014] [Indexed: 11/30/2022]
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Lian S, Wang G, Zhou L, Yang D. Fluorescence spectroscopic analysis on interaction of fleroxacin with pepsin. LUMINESCENCE 2013; 28:967-72. [PMID: 23401145 DOI: 10.1002/bio.2469] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 11/14/2012] [Accepted: 11/18/2012] [Indexed: 11/12/2022]
Abstract
The interaction between fleroxacin (FLX) and pepsin was investigated by spectrofluorimetry. The effects of FLX on pepsin showed that the microenvironment of tryptophan residues and molecular conformation of pepsin were changed based on fluorescence quenching and synchronous fluorescence spectroscopy in combination with three-dimensional fluorescence spectroscopy. Static quenching was suggested and it was proved that the fluorescence quenching of pepsin by FLX was related to the formation of a new complex and a non-radiation energy transfer. The quenching constants KSV , binding constants K and binding sites n were calculated at different temperatures. The molecular interaction distance (r = 6.71) and energy transfer efficiency (E = 0.216) between pepsin and FLX were obtained according to the Forster mechanism of non-radiation energy transfer. Hydrophobic and electrostatic interaction played a major role in FLX-pepsin association. In addition, the hydrophobic interaction and binding free energy were further tested by molecular modeling study.
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Affiliation(s)
- Shuqin Lian
- School of Pharmacy, Xuzhou Medical College, Xuzhou, Jiangsu, 221004, China
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Luiz FCL, Garcia LS, Goes Filho LS, Teixeira LR, Louro SRW. Fluorescence Studies of gold(III)-Norfloxacin Complexes in Aqueous Solutions. J Fluoresc 2011; 21:1933-40. [DOI: 10.1007/s10895-011-0892-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 05/02/2011] [Indexed: 10/18/2022]
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Zapała L. Potentiometric Studies on the Equilibria of Flufenamic Acid in Aqueous Solutions and in Two-phase Organic Solvent + Water Systems. J SOLUTION CHEM 2011. [DOI: 10.1007/s10953-010-9642-6] [Citation(s) in RCA: 3] [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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Lipka E, Folly-Klan M, Charton J, Vaccher MP, Bonte JP, Vaccher C. Determination of pKa values of benzimidazole derivatives from mobility obtained by capillary electrophoresis. J Pharm Biomed Anal 2010; 53:1267-71. [DOI: 10.1016/j.jpba.2010.07.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 07/08/2010] [Accepted: 07/18/2010] [Indexed: 10/19/2022]
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Foulon C, Duhal N, Lacroix-Callens B, Vaccher C, Bonte JP, Goossens JF. Determination of pKa values of benzoxa-, benzothia- and benzoselena-zolinone derivatives by capillary electrophoresis. Eur J Pharm Sci 2007; 31:165-71. [PMID: 17462870 DOI: 10.1016/j.ejps.2007.03.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2006] [Revised: 03/03/2007] [Accepted: 03/05/2007] [Indexed: 11/23/2022]
Abstract
Acidity constants of benzoxa-, benzothia- and benzoselena-zolinone derivatives were determined by capillary electrophoresis, potentiometry and spectrophotometry experiments. These three analytical techniques gave pK(a) results that were in good agreement. A convenient, accurate and precise method for the determination of pK(a) was developed to measure changes in acidity constants induced by heteroatom or 6-benzoyl substituted derivatives. pK(a) values were determined simultaneously for two compounds characterized by different electrophoretic mobility (micro(e)) and pK(a) value and in the presence of an analogous neutral marker.
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Affiliation(s)
- C Foulon
- Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences Pharmaceutiques et Biologiques, Université de LILLE 2, Lille Cedex, France
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İnam R, Mercan H, Yılmaz E, Uslu B. Differential Pulse Polarographic Determination of Moxifloxacin Hydrochloride in Pharmaceuticals and Biological Fluids. ANAL LETT 2007. [DOI: 10.1080/00032710600964817] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Trindade MAG, Cunha PAC, Araújo TAD, Silva GMD, Ferreira VS. Interaction study of moxifloxacin with Cu(II) ion using square-wave voltammetry and its application in the determination in tablets. ECLÉTICA QUÍMICA 2006. [DOI: 10.1590/s0100-46702006000100004] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This work presents an electroanalytical method for the determination of moxifloxacin (MOXI) in tablets by its interaction with Cu(II) ion and subsequent electrochemical reduction at hanging mercury drop electrode (HMDE). A well-defined reduction peak at -0.21 V vs. Ag/AgCl in Phosphate buffer 0.04 mol L-1 pH 8.0 was observed for the complex reduction MOXI-Cu(II), using square-wave voltammetry (SWV). Using a 10 s of accumulation time at -0.40 V was found a limit detection of 3.60x10-8 mol l-1. The obtained results have shown good agreement with those obtained by spectrophotometric method.
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Rizk M, Belal F, Ibrahim F, Ahmed S, El-Enany NM. Voltammetric analysis of certain 4-quinolones in pharmaceuticals and biological fluids. J Pharm Biomed Anal 2000; 24:211-8. [PMID: 11130200 DOI: 10.1016/s0731-7085(00)00401-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The voltammetric behaviour of Enrofloxacin (I), Sparfloxacin (II) and Fleroxacin (III) was studied using direct current (DCt), differential pulse (DPP) and alternating current (ACt). All the drugs manifest cathodic waves in Britton Robinson buffer over the pH range of 4.0-11.98. The waves were characterized as being irreversible, diffusion-controlled with limited adsorption properties. The diffusion current concentration relationships were found to be rectilinear over the ranges 4 x 10(-5) x 10(-4) M, 1 x 10(-5)-2 x 10(-4) M, 1 x 10(-5)-4 x 10(-4) M using DCt mode for I, II and III, respectively and 1 x 10(-6)-4 x 10(-5) M, 1 x 10(-6)-1 x 10(-4) M, and 2 x 10(-6)-8 x 10(-5) M, using DPP mode for I, II and III respectively, with minimum detectability (S/N = 3) of 1 x 10(-7) M for I, II and 2 x 10(-7) M for III. The proposed method was successfully applied to the determination of the studied compounds either per se or in formulations and biological fluids. The results obtained were concordant to those given using reference methods.
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Affiliation(s)
- M Rizk
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Mansoura, Egypt
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Kapetanović V, Milovanović LJ, Aleksić M, Ignjatović LJ. Voltammetric methods for analytical determination of fleroxacin in quinodis tablets. J Pharm Biomed Anal 2000; 22:925-32. [PMID: 10857561 DOI: 10.1016/s0731-7085(00)00289-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The direct current (dc) and differential pulse (dp) polarographic reduction of fleroxacin was done in a wide pH range from 2.48 to 13.00. The appropriate buffer choice was made for its dp polarographic determination in a range from 1.845 to 16.926 microg /ml, at pH 8.50. The adsorptive properties of fleroxacin were investigated in order to achieve an increase in sensitivity and a possibility of fleroxacin determination by applying the adsorptive stripping voltammetric method. The adsorptive processes at the hanging mercury drop electrode were investigated in Britton-Robinson and borate buffers. Adsorptive preconcentration followed by differential-pulse cathodic stripping showed one wave at approximately - 1.1 V being the most sensitive for analytical determination of fleroxacin. Two linear ranges were obtained, the first one from 18.465 to 258.51 ng/ml, and the second one from 3.693 to 18.465 ng/ml.
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Affiliation(s)
- V Kapetanović
- Institute of Analytical and Physical Chemistry, Faculty of Pharmacy, University of Belgrade, Yugoslavia.
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