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Dalla Zuanna P, Curci D, Lucafò M, Addobbati R, Fabretto A, Stocco G. Preanalytical Stability of 13 Antibiotics in Biological Samples: A Crucial Factor for Therapeutic Drug Monitoring. Antibiotics (Basel) 2024; 13:675. [PMID: 39061358 PMCID: PMC11274111 DOI: 10.3390/antibiotics13070675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/16/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024] Open
Abstract
The stability of antibiotic preanalytical samples is a critical factor in therapeutic drug monitoring (TDM), a practice of undoubted importance for the proper therapeutic use of antibiotics, especially in complex management patients, such as pediatrics. This review aims to analyze the data in the literature regarding the preanalytical stability of some of the antibiotics for which TDM is most frequently requested. The literature regarding the preanalytical stability of amikacin, ampicillin, cefepime, ceftazidime, ciprofloxacin, daptomycin, gentamicin, levofloxacin, linezolid, meropenem, piperacillin, teicoplanin, and vancomycin in plasma, serum, whole blood, and dried blood/plasma spot samples was analyzed. Various storage temperatures (room temperature, 4 °C, -20 °C, and -80 °C) and various storage times (from 1 h up to 12 months) as well as subjecting to multiple freeze-thaw cycles were considered. The collected data showed that the non-beta-lactam antibiotics analyzed were generally stable under the normal storage conditions used in analytical laboratories. Beta-lactam antibiotics have more pronounced instability, particularly meropenem, piperacillin, cefepime, and ceftazidime. For this class of antibiotics, we suggest that storage at room temperature should be limited to a maximum of 4 h, storage at 2-8 °C should be limited to a maximum of 24 h, and storage at -20 °C should be limited to a maximum of 7 days; while, for longer storage, freezing at -80 °C is suggested.
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Affiliation(s)
- Paolo Dalla Zuanna
- Clinical and Experimental Pharmacology, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, 33081 Aviano, Italy;
| | - Debora Curci
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137 Trieste, Italy; (D.C.); (R.A.); (A.F.)
| | - Marianna Lucafò
- Department of Life Science, University of Trieste, 34127 Trieste, Italy;
| | - Riccardo Addobbati
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137 Trieste, Italy; (D.C.); (R.A.); (A.F.)
| | - Antonella Fabretto
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137 Trieste, Italy; (D.C.); (R.A.); (A.F.)
| | - Gabriele Stocco
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137 Trieste, Italy; (D.C.); (R.A.); (A.F.)
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy
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Green Automated Solid Phase Extraction to Measure Levofloxacin in Human Serum via Liquid Chromatography with Fluorescence Detection for Pharmacokinetic Study. SEPARATIONS 2023. [DOI: 10.3390/separations10020136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
A simple, selective, rapid, sensitive and less costly green automated solid phase extraction bio-analytical high-performance liquid chromatographic-based technique with fluorescence detection (Aut-SPE-BA-HPLC-FL) for the quantification of levofloxacin in human serum samples has been developed and validated. The serum samples were loaded into the chromatographic system without prior treatment and then injected into short (20 mm × 4.6 mm, 20 µm) protein-coated (PC) µBondapak CN (µBCN) silica pre-column (PC-µBCN-pre-column). Levofloxacin was retained and pre-concentrated on the head of the PC-µBCN-pre-column, while proteins and other polar components were eliminated using phosphate buffer saline (PBS), pH 7.4, as the first mobile phase in the extraction step. Levofloxacin is then transferred to the analytical column; ZORBAX Eclipse XDB-C18 (150 mm × 46 mm, 5 µm), through the aid of a column-switching valve technique, on-throughs the elution mode using the second mobile phase containing a methanol and phosphate buffer (0.05 M, pH 5) in a ratio of 70:30 (v/v). Levofloxacin signals were detected using a fluorescence detector operated at excitation/emission wavelengths of 295/500 nm. The proposed Aut-SPE-BA-HPLC-FL methodology showed linearity over a levofloxacin concentration range of 10–10,000 ng/mL (r2 = 0.9992), with good recoveries ranging from 87.12 to 97.55%. Because of the validation qualities in terms of linearity, recovery, precision, accuracy, selectivity and robustness, the Aut-SPE-BA-HPLC-FL method has been used in some clinical trials for therapeutic drug monitoring and the pharmacokinetic study of levofloxacin in human serum.
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Rapid HPLC determination of ciprofloxacin, ofloxacin, and marbofloxacin alone or in a mixture. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2022.100749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Kai M, Tanaka R, Suzuki Y, Goto K, Ohchi Y, Yasuda N, Tatsuta R, Kitano T, Itoh H. UHPLC-MS/MS method for simultaneous quantification of doripenem, meropenem, ciprofloxacin, levofloxacin, pazufloxacin, linezolid, and tedizolid in filtrate during continuous renal replacement therapy. J Clin Lab Anal 2022; 37:e24815. [PMID: 36525363 PMCID: PMC9833962 DOI: 10.1002/jcla.24815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Since severe infections frequently cause acute kidney injury (AKI), continuous renal replacement therapy (CRRT) is often initiated for regulation of inflammatory mediators and renal support. Thus, it is necessary to decide the antibiotic dosage considering the CRRT clearance in addition to residual renal function. Some of the hemofilters used in CRRT are known to adsorb antibiotics, and clearance of antibiotics may differ depending on the adsorptive characteristics of hemofilters. Although assay systems for blood and CRRT filtrate concentrations are required, no method for measuring antibiotics concentrations in filtrate has been reported. We developed a UHPLC-MS/MS method for simultaneous quantification of antibiotics commonly used in ICU, comprising carbapenems [doripenem (DRPM) and meropenem (MEPM)], quinolones [ciprofloxacin (CPFX), levofloxacin (LVFX) and pazufloxacin (PZFX)] and anti-MRSA agents [linezolid (LZD), and tedizolid (TZD)] in CRRT filtrate samples. METHODS Filtrate samples were pretreated by protein precipitation. The analytes were separated with an ACQUITY UHPLC CSH C18 column under a gradient mobile phase consisting of water and acetonitrile containing 0.1% formic acid and 2 mM ammonium formate. RESULTS The method showed good linearity over wide ranges. Within-batch and batch-to-batch accuracy and precision for each drug fulfilled the criteria of the US Food and Drug Administration guidance. The recovery rate was more than 87.20%. Matrix effect ranged from 99.57% to 115.60%. Recovery rate and matrix effect did not differ remarkably between quality control samples at different concentrations. CONCLUSION This is the first report of a simultaneous quantification method of multiple antibiotics in filtrate of CRRT circuit.
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Affiliation(s)
- Makoto Kai
- Department of Clinical PharmacyOita University HospitalYufuJapan
| | - Ryota Tanaka
- Department of Clinical PharmacyOita University HospitalYufuJapan
| | - Yosuke Suzuki
- Department of Clinical PharmacyOita University HospitalYufuJapan,Department of Medication Use Analysis and Clinical ResearchMeiji Pharmaceutical UniversityTokyoJapan
| | - Koji Goto
- Department of Anesthesiology and Intensive Care, Faculty of MedicineOita UniversityYufuJapan
| | - Yoshifumi Ohchi
- Department of Anesthesiology and Intensive Care, Faculty of MedicineOita UniversityYufuJapan
| | - Norihisa Yasuda
- Department of Anesthesiology and Intensive Care, Faculty of MedicineOita UniversityYufuJapan
| | - Ryosuke Tatsuta
- Department of Clinical PharmacyOita University HospitalYufuJapan
| | - Takaaki Kitano
- Department of Anesthesiology and Intensive Care, Faculty of MedicineOita UniversityYufuJapan
| | - Hiroki Itoh
- Department of Clinical PharmacyOita University HospitalYufuJapan
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Teixeira MWS, Dias CVB, Kogawa AC. Status of Physicochemical and Microbiological Analytical Methods of Gatifloxacin: A Review. J AOAC Int 2022; 105:1548-1554. [DOI: 10.1093/jaoacint/qsac089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/08/2022] [Indexed: 11/14/2022]
Abstract
Abstract
Background
Gatifloxacin (GAT), an antimicrobial of the fourth generation of fluoroquinolones, has a broad spectrum of action with activity against Gram-positive and Gram-negative, aerobic and anaerobic organisms, including mycobacteria.
Objective
The objective of this review is to discuss about (i) characteristics, (ii) properties, and (iii) analytical methods of gatifloxacin.
Results
Among the methods described in the literature for the evaluation of GAT, the most frequent was HPLC (50%) for both the analysis of pharmaceutical and biological matrixes. GAT has no monograph described in official compendia. Methods for evaluating GAT in pharmaceutical matrixes were the most found in the literature, 79%. Acetonitrile (42%), methanol (20%), and buffer solution (16%) were the most used diluents. GAT, being an antimicrobial, must be analyzed by physical-chemical and microbiological methods, since the evaluation of potency is essential. In this context, the literature is scarce (4%).
Conclusions
There is a gap in the literature for environmentally friendly methods for evaluating GAT. Faster, more optimized and dynamic microbiological methods, as well as physicochemical methods, use less aggressive solvents with fewer steps and less waste. Currently, pharmaceutical analyses require reliable analytical methods, but also safe for both the analyst and the environment.
Highlights
This review shows the status of analytical methods, both physicochemical and microbiological, for the analysis of GAT in pharmaceutical and biological matrixes, also addressing its context in green and sustainable analytical chemistry.
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Affiliation(s)
- Max Well Silva Teixeira
- Laboratório de Controle de Qualidade, Faculdade de Farmácia, Universidade Federal de Goiás—UFG , Goiânia, Goiás, Brazil
| | - Cleber Vinicios Barbosa Dias
- Laboratório de Nanosistemas e Dispositivos de Liberação Modificada de Fármacos, Faculdade de Farmácia, Universidade Federal de Goiás—UFG , Goiânia, Goiás, Brazil
| | - Ana Carolina Kogawa
- Laboratório de Controle de Qualidade, Faculdade de Farmácia, Universidade Federal de Goiás—UFG , Goiânia, Goiás, Brazil
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Determination of levofloxacin by HPLC with fluorescence detection in human breast milk. Bioanalysis 2021; 13:1063-1070. [PMID: 34100294 DOI: 10.4155/bio-2021-0058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: A new HPLC method with fluorescence detection has been developed and validated for the determination of levofloxacin, one of the fluoroquinolone class antibiotics, in breast milk. Materials & methods: Chromatographic separation was carried out on a reversed phase C18 column with acetonitrile and 10 mM o-phosphoric acid (25:75, v/v) mobile phase composition. Moxifloxacin was used as internal standard and the peaks were detected by fluorescence detection. Results & conclusion: Calibration graph was found linearly within the range of 2.5-500 ng/ml. Limit of detection and limit of quantification were found to be 0.63 and 2.11 ng/ml, respectively. Mean absolute recovery was 96.18%. The developed method has been successfully applied to the determination of levofloxacin in human breast milk taken from two healthy volunteers.
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Kai M, Tanaka R, Suzuki Y, Goto K, Ohchi Y, Yasuda N, Tatsuta R, Kitano T, Itoh H. Simultaneous quantification of plasma levels of 12 antimicrobial agents including carbapenem, anti-methicillin-resistant Staphylococcus aureus agent, quinolone and azole used in intensive care unit using UHPLC-MS/MS method. Clin Biochem 2021; 90:40-49. [PMID: 33539809 DOI: 10.1016/j.clinbiochem.2021.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 12/29/2022]
Abstract
OBJECTIVES Critically ill patients in intensive care unit (ICU) are susceptible to infectious diseases, thus empirical therapy is recommended. However, the therapeutic effect in ICU patients is difficult to predict due to fluctuation in pharmacokinetics because of various factors. This problem can be solved by developing personalized medicine through therapeutic drug monitoring. However, when different measurement systems are used for various drugs, measurements are complicated and time consuming in clinical practice. In this study, we aimed to develop an assay using ultra-high performance liquid chromatography coupled with tandem mass spectrometry for simultaneous quantification of 12 antimicrobial agents commonly used in ICU: doripenem, meropenem, linezolid, tedizolid, daptomycin, ciprofloxacin, levofloxacin, pazufloxacin, fluconazole, voriconazole, voriconazole N-oxide which is a major metabolite of voriconazole, and posaconazole. DESIGN & METHODS Plasma protein was precipitated by adding acetonitrile and 50% MeOH containing standard and labeled IS. The analytes were separated with an ACQUITY UHPLC CSH C18 column, under a gradient mobile phase consisting of water and acetonitrile containing 0.1% formic acid and 2 mM ammonium formate. RESULTS The method fulfilled the criteria of US Food and Drug Administration for assay validation. The recovery rate was more than 84.8%. Matrix effect ranged from 79.1% to 119.3%. All the calibration curves showed good linearity (back calculation of calibrators: relative error ≤ 15%) over wide concentration ranges, which allowed determination of Cmax and Ctrough. Clinical applicability of the novel method was confirmed. CONCLUSIONS We have developed an assay for simultaneous quantification of 12 antimicrobial agents using a small sample volume of 50 μL with a short assay time of 7 min. Our novel method may contribute to simultaneous calculation of pharmacokinetic and pharmacodynamic parameters.
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Affiliation(s)
- Makoto Kai
- Department of Clinical Pharmacy, Oita University Hospital, Yufu-shi, Oita, Japan.
| | - Ryota Tanaka
- Department of Clinical Pharmacy, Oita University Hospital, Yufu-shi, Oita, Japan
| | - Yosuke Suzuki
- Department of Clinical Pharmacy, Oita University Hospital, Yufu-shi, Oita, Japan; Department of Medication Use Analysis and Clinical Research, Meiji Pharmaceutical University, Tokyo, Japan
| | - Koji Goto
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, Oita University, Yufu-shi, Oita, Japan
| | - Yoshifumi Ohchi
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, Oita University, Yufu-shi, Oita, Japan
| | - Norihisa Yasuda
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, Oita University, Yufu-shi, Oita, Japan
| | - Ryosuke Tatsuta
- Department of Clinical Pharmacy, Oita University Hospital, Yufu-shi, Oita, Japan
| | - Takaaki Kitano
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, Oita University, Yufu-shi, Oita, Japan
| | - Hiroki Itoh
- Department of Clinical Pharmacy, Oita University Hospital, Yufu-shi, Oita, Japan
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Ibrahim F, Magdy G, Wahba MEK. Utility of micellar liquid chromatography as an analytical tool for the estimation of three binary antibiotic mixtures. Application to biological fluids. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2020. [DOI: 10.1080/16583655.2020.1790913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Fawzia Ibrahim
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Galal Magdy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
| | - Mary E. K. Wahba
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
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9
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Yıldırım S, Karakoç HN, Yaşar A, Köksal İ. Determination of levofloxacin, ciprofloxacin, moxifloxacin and gemifloxacin in urine and plasma by HPLC-FLD-DAD using pentafluorophenyl core-shell column: Application to drug monitoring. Biomed Chromatogr 2020; 34:e4925. [PMID: 32557742 DOI: 10.1002/bmc.4925] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/10/2020] [Accepted: 06/16/2020] [Indexed: 11/10/2022]
Abstract
Concentrations of fluoroquinolones, which are used in the treatment of many bacterial infections, should be monitored in biological fluids as they exhibit concentration-dependent bactericidal activity. In this study, a liquid chromatography method for the determination of levofloxacin, ciprofloxacin, moxifloxacin and gemifloxacin in human urine and plasma was developed for the first time. The efficiency of five different columns for the separation of these fluoroquinolones was compared. Experimental parameters that affect the separation, such as percentage of organic solvent, pH, temperature, gradient shape and detector wavelength, were optimized by a step-by-step approach. Using a pentafluorophenyl core-shell column (100 × 4.6 mm, 2.7 μm), the separation of four analytes was accomplished in <7.5 min. The developed method was validated for the determination of analytes in both urine and plasma with respect to sensitivity, specificity, linearity (r ≥ 0.9989), recovery (79.46-102.69%), accuracy, precision and stability (85.79-111.07%). The intra- and inter-day accuracies were within 89.55-111.94% with relative standard deviations of 0.35-8.05%. The feasibility of method was demonstrated by analyzing urine and plasma samples of patients orally receiving levofloxacin, ciprofloxacin or moxifloxacin. The developed method is suitable for therapeutic drug monitoring of these fluoroquinolones and can be applied to pharmacokinetic and toxicological studies.
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Affiliation(s)
- Sercan Yıldırım
- Department of Analytical Chemistry, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkey
| | - Hanife Nur Karakoç
- Department of Infectious Disease, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Ahmet Yaşar
- Department of Analytical Chemistry, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkey
| | - İftihar Köksal
- Department of Infectious Disease, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
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Shokoufi N, Vosough M, Rahimzadegan-Asl M, Abbasi-Ahd A, Khatibeghdami M. Fiberoptic-Coupled Spectrofluorometer with Array Detection as a Process Analytical Chemistry Tool for Continuous Flow Monitoring of Fluoroquinolone Antibiotics. Int J Anal Chem 2020; 2020:2921417. [PMID: 32089690 PMCID: PMC7029292 DOI: 10.1155/2020/2921417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/28/2019] [Accepted: 01/08/2020] [Indexed: 11/17/2022] Open
Abstract
Nowadays, there is an increasing need for sensitive real-time measurements of various analytes and monitoring of industrial products and environmental processes. Herein, we describe a fluorescence spectrometer in continuous flow mode in which the sample is fed to the flow cell using a peristaltic pump. The excitation beam is introduced to the sample chamber by an optical fiber. The fluorescence emitted upon excitation is collected at the right angle using another optical fiber and then transmitted to the fluorescence spectrometer which utilizes an array detector. The array detection, as a key factor in process analytical chemistry, made the fluorescence spectrometer suited for multiwavelength detection of the fluorescence spectrum of the analytes. After optimization of the experimental parameters, the system has been successfully employed for sensitive determination of four fluoroquinolone antibiotics such as ciprofloxacin, ofloxacin, levofloxacin, and moxifloxacin. The linear dynamic ranges of four fluoroquinolones were between 0.25 and 20 μg·mL-1, and the detection limit of the method for ciprofloxacin, ofloxacin, levofloxacin, and moxifloxacin were 81, 36, 35, and 93 ng·mL-1, respectively. Finally, the proposed system is carried out for determination of fluoroquinolones in some pharmaceutical formulations.
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Affiliation(s)
- Nader Shokoufi
- Analytical Instrumentation and Spectroscopy Laboratory, Department of Green Technologies, Chemistry & Chemical Engineering Research Center of Iran, Tehran 14968-13151, Iran
| | - Maryam Vosough
- Analytical Instrumentation and Spectroscopy Laboratory, Department of Green Technologies, Chemistry & Chemical Engineering Research Center of Iran, Tehran 14968-13151, Iran
| | - Mona Rahimzadegan-Asl
- Analytical Instrumentation and Spectroscopy Laboratory, Department of Green Technologies, Chemistry & Chemical Engineering Research Center of Iran, Tehran 14968-13151, Iran
| | - Atefeh Abbasi-Ahd
- Analytical Instrumentation and Spectroscopy Laboratory, Department of Green Technologies, Chemistry & Chemical Engineering Research Center of Iran, Tehran 14968-13151, Iran
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Zheng Y, Wang Z, Lui G, Hirt D, Treluyer J, Benaboud S, Aboura R, Gana I. Simultaneous quantification of levofloxacin, pefloxacin, ciprofloxacin and moxifloxacin in microvolumes of human plasma using high‐performance liquid chromatography with ultraviolet detection. Biomed Chromatogr 2019; 33:e4506. [DOI: 10.1002/bmc.4506] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 12/22/2018] [Accepted: 02/05/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Yi Zheng
- Service de Pharmacologie Clinique, Hôpital Cochin, Assistance Publique des Hôpitaux de ParisGroupe Hospitalier Paris Centre Paris France
- EA 7323Université Paris Descartes Paris France
- Unité de Recherche Clinique Paris Descartes Necker CochinAssistance Publique des Hôpitaux de Paris Paris France
| | - Ziqing Wang
- EA 7323Université Paris Descartes Paris France
| | - Gabrielle Lui
- Service de Pharmacologie Clinique, Hôpital Cochin, Assistance Publique des Hôpitaux de ParisGroupe Hospitalier Paris Centre Paris France
- EA 7323Université Paris Descartes Paris France
- Unité de Recherche Clinique Paris Descartes Necker CochinAssistance Publique des Hôpitaux de Paris Paris France
| | - Déborah Hirt
- Service de Pharmacologie Clinique, Hôpital Cochin, Assistance Publique des Hôpitaux de ParisGroupe Hospitalier Paris Centre Paris France
- EA 7323Université Paris Descartes Paris France
- Unité de Recherche Clinique Paris Descartes Necker CochinAssistance Publique des Hôpitaux de Paris Paris France
| | - Jean‐Marc Treluyer
- Service de Pharmacologie Clinique, Hôpital Cochin, Assistance Publique des Hôpitaux de ParisGroupe Hospitalier Paris Centre Paris France
- EA 7323Université Paris Descartes Paris France
- Unité de Recherche Clinique Paris Descartes Necker CochinAssistance Publique des Hôpitaux de Paris Paris France
| | - Sihem Benaboud
- Service de Pharmacologie Clinique, Hôpital Cochin, Assistance Publique des Hôpitaux de ParisGroupe Hospitalier Paris Centre Paris France
- EA 7323Université Paris Descartes Paris France
- Unité de Recherche Clinique Paris Descartes Necker CochinAssistance Publique des Hôpitaux de Paris Paris France
| | - Radia Aboura
- Service de Pharmacologie Clinique, Hôpital Cochin, Assistance Publique des Hôpitaux de ParisGroupe Hospitalier Paris Centre Paris France
- Unité de Recherche Clinique Paris Descartes Necker CochinAssistance Publique des Hôpitaux de Paris Paris France
| | - Inès Gana
- Service de Pharmacologie Clinique, Hôpital Cochin, Assistance Publique des Hôpitaux de ParisGroupe Hospitalier Paris Centre Paris France
- Unité de Recherche Clinique Paris Descartes Necker CochinAssistance Publique des Hôpitaux de Paris Paris France
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Microextraction by Packed Molecularly Imprinted Polymer Combined Ultra-High-Performance Liquid Chromatography for the Determination of Levofloxacin in Human Plasma. J CHEM-NY 2019. [DOI: 10.1155/2019/4783432] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Fluoroquinolones are considered as gold standard for the prevention of bacterial infections. To improve assessment of antibacterial efficacy, a novel method for determination of levofloxacin was developed and validated. Deep eutectic solvents (DESs) as only green solvent were used as a porogen for preparation of water-compatible molecularly imprinted polymers (MIPs) with a pseudotemplate. The DESs-MIPs were characterized in detail, including scanning electron microscope, nitrogen sorption porosimetry, and Fourier transform-infrared spectra. Clearly, the maximum binding capacity of levofloxacin on DESs-MIPs in water and methanol was 0.216 and 0.077 μmol g−1, respectively. The DESs-MIPs as adsorbing materials were applied in microextraction by packed sorbent (MEPS), and the DESs-MIPs-MEPS conditions were optimized. The DESs-MIPs-MEPS coupled with ultra-high-performance liquid chromatography (UHPLC) was used to determine levofloxacin in human plasma. The method was found linear over 0.05–10 μg mL−1 with coefficient of correlation equal to 0.9988. The limit of detection and limit of quantification were 0.012 and 0.04 μg mL−1, respectively. At three spiked levels, the precision of proposed method was between 95.3% and 99.7% with intraday and interday relative standard deviations ≤8.9%. Finally, the developed method was used to examine levofloxacin from human plasma of 20 hospitalized patients after transrectal ultrasound-guided prostate biopsy, and the average concentration (±SD) of levofloxacin was 2.35 ± 0.99 μg mL−1 in plasma.
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Comparative Study of Ocular Pharmacokinetics of Gatifloxacin Between Continuous Lavage and Hourly Topical Instillation in Rabbits. Cornea 2018; 37:1457-1462. [PMID: 30124589 DOI: 10.1097/ico.0000000000001712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To investigate the ocular pharmacokinetics and distribution of gatifloxacin between continuous lavage through the Morgan lens and repeated topical drop instillation in rabbits. METHODS Thirty-six healthy rabbits were randomly divided into 2 groups, and 0.3% gatifloxacin ophthalmic solution was instilled by continuous lavage using the Morgan lens onto the left eyes at 15 mL/h (or 50 μL of the same solution repeatedly administered topically every hour). The animals were killed at 2, 4, 8, and 12 hours in the Morgan lens group or at 12 and 24 hours in the topical instillation group. Aqueous humor specimens were collected from the anterior chamber first, and other ocular tissues and plasma were collected subsequently. Pharmacokinetic and pharmacodynamic indices, other than the minimum inhibitory concentration (MIC), were used as therapeutic parameters in ocular tissues. RESULTS The highest concentration was found in the corneas in both groups. With continuous lavage, gatifloxacin reached an efficacious high concentration in 4 hours in the cornea, which is equivalent to about 23 times the concentration reached in the same tissue by hourly topical instillation for 12 to 24 hours. Using historic data as references, C/MIC90 was 105 (>10) and AUC0-t/MIC90 was 194 h (>125) in the cornea in the continuous lavage group at 4 hours, whereas these values were 5 and 73 hours for the topical hourly instillation group. CONCLUSIONS Compared with hourly topical instillation, continuous lavage through the Morgan lens could achieve significantly higher concentrations in ocular tissues within a short period, especially in the cornea. Continuous lavage may be a much more efficient way to treat recalcitrant corneal infections.
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Kočová Vlčková H, Pilařová V, Svobodová P, Plíšek J, Švec F, Nováková L. Current state of bioanalytical chromatography in clinical analysis. Analyst 2018; 143:1305-1325. [DOI: 10.1039/c7an01807j] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Chromatographic methods have become popular in clinical analysis in both routine and research laboratories.
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Affiliation(s)
- H. Kočová Vlčková
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - V. Pilařová
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - P. Svobodová
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - J. Plíšek
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - F. Švec
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
| | - L. Nováková
- Deparment of Analytical Chemistry
- Faculty of Pharmacy in Hradec Králové
- Charles University
- Hradec Králové
- Czech Republic
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15
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Van Toi P, Pouplin T, Tho NDK, Phuong PN, Chau TTH, Thuong Thuong NT, Heemskerk D, Hien TT, Thwaites GE. High-performance liquid chromatography with time-programmed fluorescence detection for the quantification of Levofloxacin in human plasma and cerebrospinal fluid in adults with tuberculous meningitis. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1061-1062:256-262. [PMID: 28756357 DOI: 10.1016/j.jchromb.2017.07.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/17/2017] [Accepted: 07/18/2017] [Indexed: 11/19/2022]
Abstract
An accurate and reliable high-performance liquid chromatography with time-programmed fluorescence detection was developed and validated to measure levofloxacin in human plasma and cerebrospinal fluid (CSF). After solid phase extraction process using Evolute® ABN 96 fixed well plate; levofloxacin and internal standard-enoxacin were separated using a mobile phase consisting of phosphate buffer 10mM with 0.025% triethylamine pH 3.0 - acetonitrile (88:12, v/v) on a Purosphere RP-8e column (5μm, 125×4.0mm) at a flow rate of 1.2mL/min at 35°C. The excitation/emission wavelengths were set to 269/400nm and 294/500nm, for enoxacin and levofloxacin, respectively. The method was linear over the concentration range of 0.02 to 20.0μg/mL with a limit of detection of 0.01μg/mL. The relative standard deviation of intra-assay and inter-assay precision for levofloxacin at four quality controls concentrations (0.02, 0.06, 3.0 and 15.0μg/mL) were less than 7% and the accuracies ranged from 96.75% to 101.9% in plasma, and from 93.00% to 98.67% in CSF. The validated method was successfully applied to quantify levofloxacin in a considerable quantity of plasma (826) and CSF (477) samples collected from 232 tuberculous meningitis patients, and the preliminary intensive pharmacokinetics analysis from 14 tuberculous meningitis patients in Vietnam is described in this paper.
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Affiliation(s)
- Pham Van Toi
- Oxford University Clinical Research Unit, Wellcome Trust Major Oversea Programme, Ho Chi Minh City- In Partnership with Hospital for Tropical Diseases Ho Chi Minh City, Viet Nam.
| | - Thomas Pouplin
- Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
| | - Nguyen Duc Khanh Tho
- Oxford University Clinical Research Unit, Wellcome Trust Major Oversea Programme, Ho Chi Minh City- In Partnership with Hospital for Tropical Diseases Ho Chi Minh City, Viet Nam.
| | - Pham Nguyen Phuong
- Oxford University Clinical Research Unit, Wellcome Trust Major Oversea Programme, Ho Chi Minh City- In Partnership with Hospital for Tropical Diseases Ho Chi Minh City, Viet Nam.
| | | | - Nguyen Thuy Thuong Thuong
- Oxford University Clinical Research Unit, Wellcome Trust Major Oversea Programme, Ho Chi Minh City- In Partnership with Hospital for Tropical Diseases Ho Chi Minh City, Viet Nam.
| | - Dorothee Heemskerk
- Oxford University Clinical Research Unit, Wellcome Trust Major Oversea Programme, Ho Chi Minh City- In Partnership with Hospital for Tropical Diseases Ho Chi Minh City, Viet Nam.
| | - Tran Tinh Hien
- Oxford University Clinical Research Unit, Wellcome Trust Major Oversea Programme, Ho Chi Minh City- In Partnership with Hospital for Tropical Diseases Ho Chi Minh City, Viet Nam; Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, University of Oxford, United Kingdom.
| | - Guy E Thwaites
- Oxford University Clinical Research Unit, Wellcome Trust Major Oversea Programme, Ho Chi Minh City- In Partnership with Hospital for Tropical Diseases Ho Chi Minh City, Viet Nam; Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, University of Oxford, United Kingdom.
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16
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Matos AC, Pinto RV, Bettencourt AF. Easy-Assessment of Levofloxacin and Minocycline in Relevant Biomimetic Media by HPLC–UV Analysis. J Chromatogr Sci 2017; 55:757-765. [DOI: 10.1093/chromsci/bmx033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 04/04/2017] [Indexed: 11/14/2022]
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17
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Measurement of levofloxacin in human plasma samples for a reliable and accessible drug monitoring. Clin Biochem 2017; 50:73-79. [DOI: 10.1016/j.clinbiochem.2016.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 09/04/2016] [Accepted: 09/08/2016] [Indexed: 11/23/2022]
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18
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Czyrski A. Analytical Methods for Determining Third and Fourth Generation Fluoroquinolones: A Review. Chromatographia 2016; 80:181-200. [PMID: 28216694 PMCID: PMC5288422 DOI: 10.1007/s10337-016-3224-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/01/2016] [Accepted: 12/06/2016] [Indexed: 01/20/2023]
Abstract
ABSTRACT Fluoroquinolones of the third and fourth generation posses wide bactericidal activity. Monitoring concentrations of antibacterial agents provides effective therapy and prevents the increase of bacterial resistance to antibiotics. The pharmacodynamic parameters that best describe fluoroquinalone activity are AUC/MIC and Cmax/MIC. Determining the level of this type of drug is essential to reach the effective concentration that inhibits the growth of bacteria. Determining the pharmaceutical formulation confirms the purity of a substance. Many methods have been developed to determine the level of these substances. They involve mainly the following analytical techniques: chromatography, capillary electrophoresis, and spectroscopy. The separation techniques were combined with different measuring devices, such as ultraviolet (UV), fluorescence detector (FLD), diode array detector (DAD), and mass spectrometry (MS). The analytical procedures require proper sample pre-conditioning such as protein precipitation, extraction techniques, filtration, or dilution. This paper reviews the reported analytical methods for the determining representatives of the third and fourth generation of fluoroquinolones. Attention was paid to pre-conditioning of the samples and the applied mobile phase. This report might be helpful in the selection of the proper procedure in determining the abovementioned drugs in different matrices. GRAPHICAL ABSTRACT
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Affiliation(s)
- Andrzej Czyrski
- The Department of Physical Pharmacy and Pharmacokinetics, Poznań University of Medical Sciences, 6 Swiecickego Street, 60-781 Poznan, Poland
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19
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Long C, Deng B, Sun S, Meng S. Simultaneous determination of chlortetracycline, ampicillin and sarafloxacin in milk using capillary electrophoresis with electrochemiluminescence detection. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 34:24-31. [PMID: 27805474 DOI: 10.1080/19440049.2016.1254820] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A fast, inexpensive and sensitive approach for the simultaneous determination of chlortetracycline, ampicilline and sarafloxacin in milk was developed using capillary electrophoresis coupled with an electrochemiluminescence detector. Under the optimal detection conditions, the linear ranges for chlortetracyline, ampicilline and sarafloxacin were 0.030-5.0, 0.050-5.0 and 0.0040-2.0 μg ml-1, respectively. The correlation coefficients of chlortetracycline, ampicilline and sarafloxacin were determined as 0.9997, 0.9952 and 0.9978, respectively. Detection limits (S/N = 3) of chlortetracycline, ampicilline and sarafloxacin were found as 0.017, 0.018 and 0.0013 μg ml-1, respectively. This method was successfully applied for the determination of chlortetracycline, ampicilline and sarafloxacin in milk. The recoveries were between 95.3% and 100%. The relative standard deviations of the detection limit and recovery were less than 2.6% and 3.2%, respectively.
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Affiliation(s)
- Chanjuan Long
- a Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin , China
| | - Biyang Deng
- a Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin , China
| | - Shuangjiao Sun
- a Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin , China
| | - Sa Meng
- a Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin , China
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20
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Ultra-high performance liquid chromatographic determination of levofloxacin in human plasma and prostate tissue with use of experimental design optimization procedures. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1029-1030:48-59. [DOI: 10.1016/j.jchromb.2016.06.051] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 06/25/2016] [Accepted: 06/28/2016] [Indexed: 11/21/2022]
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21
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Shobo A, Baijnath S, Bratkowska D, Naiker S, Somboro AM, Bester LA, Singh SD, Naicker T, Kruger HG, Govender T. MALDI MSI and LC-MS/MS: Towards preclinical determination of the neurotoxic potential of fluoroquinolones. Drug Test Anal 2015; 8:832-8. [PMID: 26382199 DOI: 10.1002/dta.1862] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 07/29/2015] [Accepted: 07/30/2015] [Indexed: 01/19/2023]
Abstract
Fluoroquinolones are broad-spectrum antibiotics with efficacy against a wide range of pathogenic microbes associated with respiratory and meningeal infections. The potential toxicity of this class of chemical agents is a source of major concern and is becoming a global issue. The aim of this study was to develop a method for the brain distribution and the pharmacokinetic profile of gatifloxacin in healthy Sprague-Dawley rats, via Multicenter matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) and quantitative liquid chromatography-tandem mass spectrometry (LC-MS/MS). We developed a sensitive LC-MS/MS method to quantify gatifloxacin in plasma, lung, and brain homogenates. A pharmacokinetic profile was observed where there is a double peak pattern; a sharp initial increase in the concentration soon after dosing followed by a steady decline until another increase in concentration after a longer period post dosing in all three biological samples was observed. The imaging results showed the drug gradually entering the brain via the blood brain barrier and into the cortical regions from 15 to 240 min post dose. As time elapses, the drug leaves the brain following the same path as it followed on its entry and finally concentrates at the cortex. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Adeola Shobo
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Sooraj Baijnath
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Dominika Bratkowska
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Suhashni Naiker
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Anou M Somboro
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Linda A Bester
- Biomedical Resource Unit, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Sanil D Singh
- Biomedical Resource Unit, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Tricia Naicker
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Thavendran Govender
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
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22
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Krzek J, Żuromska-Witek B, Hubicka U, Kaczmarska M. Chromatographic-Densitometric Analysis of Chosen Fluoroquinolones on TLC Plates Using Mobile Phases with Different Viscosity. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1028290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Jan Krzek
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Barbara Żuromska-Witek
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Urszula Hubicka
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Marta Kaczmarska
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
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23
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Yaroshenko IS, Khaimenov AY, Grigor’ev AV, Sidorova AA. A chromatographic-mass spectrometric method for the determination of moxifloxacin in blood plasma for pharmacokinetic studies. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815050160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Alarfaj NA, El-Tohamy MF. Utility of gold nanoparticles in luminescence determination of trovafloxacin: comparison of chemiluminescence and fluorescence detection. LUMINESCENCE 2015; 30:1403-8. [DOI: 10.1002/bio.2914] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 02/04/2015] [Accepted: 03/06/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Nawal A. Alarfaj
- Department of Chemistry, College of Science; King Saud University; Riyadh 11495 Saudi Arabia
| | - Maha F. El-Tohamy
- Department of Chemistry, College of Science; King Saud University; Riyadh 11495 Saudi Arabia
- General Administrative of Medical Affairs; Zagazig University; Egypt
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25
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Vosough M, Eshlaghi SN, Zadmard R. On the performance of multiway methods for simultaneous quantification of two fluoroquinolones in urine samples by fluorescence spectroscopy and second-order calibration strategies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:618-624. [PMID: 25315874 DOI: 10.1016/j.saa.2014.09.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 09/05/2014] [Accepted: 09/19/2014] [Indexed: 06/04/2023]
Abstract
In the present work, the analytical performance of three multi-way algorithms has been evaluated. The proposed analytical problem was the simultaneous determination of moxifloxacin and ciprofloxacin in human urine samples using fluorescence spectroscopy. Parallel factor analysis (PARAFAC), self-weighted alternating trilinear decomposition (SWATLD) and unfolded partial least squares combined with the residual bilinearization procedure (U-PLS/RBL) have been compared, regarding their ability to solve the proposed problem. In this study, "second-order advantage" was also exploited for the mentioned algorithms through different calibration strategies. The three-way data was obtained via fluorescence spectroscopy, so that excitation-emission matrices (EEM) of the samples were recorded as the analytical signals. The accuracy and precision of each individual algorithm for analyzing the drugs in urine samples were compared using root mean square error of prediction (RMSEP), recovery and elliptical joint confidence region (EJCR) plots. The results revealed that each of the three algorithms could be applied for determination of moxifloxacin and ciprofloxacin, despite different EEM subsets and calibration strategies. However, better analytical performances were observed through PARAFAC and U-PLS/RBL modeling for MOX and CIP, respectively. So, by coupling the multi-way decomposition algorithms with fluorescence spectroscopy, a main part of preliminary sample preparation steps can be eliminated and experimental procedure might be significantly simplified, while achieving desirable analytical performance.
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Affiliation(s)
- Maryam Vosough
- Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran.
| | - Sara Noroozi Eshlaghi
- Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
| | - Reza Zadmard
- Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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26
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Tong Y, Pan H, Sun C, Xin X, Ding L, Ma P. Simultaneous determination of tazarotene and its active metabolite tazarotenic acid in minipig plasma by LC–MS/MS and its application in pharmacokinetic study after topical administration of tazarotene gel. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 978-979:173-8. [DOI: 10.1016/j.jchromb.2014.11.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 11/05/2014] [Accepted: 11/30/2014] [Indexed: 11/25/2022]
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27
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Liu D, Ma J, Jin Y, Li X, Zhou X, Jia Q, Zhou W. Preparation of a monolith functionalized with zinc oxide nanoparticles and its application in the enrichment of fluoroquinolone antibiotics. J Sep Sci 2014; 38:134-40. [DOI: 10.1002/jssc.201400893] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 10/16/2014] [Accepted: 10/16/2014] [Indexed: 01/02/2023]
Affiliation(s)
- Dan Liu
- College of Chemistry; Jilin University; Changchun China
| | - Jiutong Ma
- College of Chemistry; Jilin University; Changchun China
| | - Yan Jin
- Shenyang Entry & Exit Inspection and Quarantine Bureau of China; Shenyang China
| | - Xiqian Li
- Obstetrics & Gynecology; China-Japan Union Hospital; Jilin University; Changchun China
| | - Xiao Zhou
- Jilin Entry & Exit Inspection and Quarantine Bureau of China; Changchun China
| | - Qiong Jia
- College of Chemistry; Jilin University; Changchun China
| | - Weihong Zhou
- College of Chemistry; Jilin University; Changchun China
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28
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Wong G, Sime FB, Lipman J, Roberts JA. How do we use therapeutic drug monitoring to improve outcomes from severe infections in critically ill patients? BMC Infect Dis 2014; 14:288. [PMID: 25430961 PMCID: PMC4289211 DOI: 10.1186/1471-2334-14-288] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 05/23/2014] [Indexed: 11/16/2022] Open
Abstract
High mortality and morbidity rates associated with severe infections in the critically ill continue to be a significant issue for the healthcare system. In view of the diverse and unique pharmacokinetic profile of drugs in this patient population, there is increasing use of therapeutic drug monitoring (TDM) in attempt to optimize the exposure of antibiotics, improve clinical outcome and minimize the emergence of antibiotic resistance. Despite this, a beneficial clinical outcome for TDM of antibiotics has only been demonstrated for aminoglycosides in a general hospital patient population. Clinical outcome studies for other antibiotics remain elusive. Further, there is significant variability among institutions with respect to the practice of TDM including the selection of patients, sampling time for concentration monitoring, methodologies of antibiotic assay, selection of PK/PD targets as well as dose optimisation strategies. The aim of this paper is to review the available evidence relating to practices of antibiotic TDM, and describe how TDM can be applied to potentially improve outcomes from severe infections in the critically ill.
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Affiliation(s)
| | | | | | - Jason A Roberts
- Burns Trauma and Critical Care Research Centre, The University of Queensland, Brisbane, Queensland, Australia.
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29
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First MEPS/HPLC assay for the simultaneous determination of venlafaxine and O-desmethylvenlafaxine in human plasma. Bioanalysis 2014; 6:3025-38. [DOI: 10.4155/bio.14.222] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: A new high-performance liquid chromatography–fluorescence detection assay based on microextraction by packed sorbent as sample preparation approach is described to quantify venlafaxine (VEN) and its main metabolite [O-desmethylvenlafaxine (ODV)]in human plasma. Methods & results: Chromatographic separation of the target analytes (VEN and ODV) and internal standard (licarbazepine) was achieved in less than 6 min on a reverse-phase C18 column using isocratic elution. Calibration curves were linear in the ranges of 10–1000 ng ml-1 for VEN and 20–1000 ng ml-1 for ODV. The method was successfully applied to real plasma samples. Conclusion: This microextraction by packed sorbent/high-performance liquid chromatography–fluorescence detection assay offers a cost-effective tool that can be applied for therapeutic drug monitoring and also support other pharmacokinetic-based studies in humans.
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30
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Jin L, Ding Y, Feng M, Cao Q. Preparation oral levofloxacin colon-specific microspheres delivery: in vitro and in vivo studies. Drug Deliv 2014; 23:992-8. [PMID: 24937382 DOI: 10.3109/10717544.2014.926429] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Lei Jin
- Department of Gastroenterology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yicun Ding
- Department of Gastroenterology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Mingli Feng
- Department of Gastroenterology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qin Cao
- Department of Gastroenterology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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