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El-Sayed A, Elmansi HM, Shalan S, Eid M. Validated spectrofluorimetric assay of two co-administered drug mixtures containing hydroxychloroquine with either moxifloxacin or ofloxacin as a drug regimen for hospital-acquired pneumonia in patients with COVID-19. LUMINESCENCE 2023; 38:1572-1582. [PMID: 37336514 DOI: 10.1002/bio.4539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/06/2023] [Accepted: 06/11/2023] [Indexed: 06/21/2023]
Abstract
Moxifloxacin and ofloxacin are two broad-spectrum quinolone antibiotics. They are among the most widely used antibiotics, at this time, applied to control the COVID-19 pandemic. Hydroxychloroquine is an FDA-approved drug for the treatment of COVID-19. This work describes a simple, green, selective, and sensitive spectrofluorimetric method for the assay of moxifloxacin and ofloxacin in the presence of hydroxychloroquine, two co-administered mixtures used in the treatment of hospital-acquired pneumonia in patients with COVID-19. Simultaneous assay of hydroxychloroquine and moxifloxacin was carried out in methanol using a direct spectrofluorimetric method (method I) at 375 and 550 nm, respectively, after excitation at 300 nm. The direct spectrofluorimetric assay was rectilinear over concentration ranges 50.0-400.0 and 300.0-2500.0 ng/ml for hydroxychloroquine and moxifloxacin, respectively, with limits of detection (LOD) of 6.4 and 33.64 ng/ml and limits of quantitation (LOQ) of 19.4 and 102.6 ng/ml, respectively, for the two drugs. The assay for hydroxychloroquine and ofloxacin was carried out by measuring the first derivative synchronous amplitude for hydroxychloroquine at the zero crossing point of ofloxacin and vice versa at Δλ = 140 nm (method II). Hydroxychloroquine was measured at 266 nm, while ofloxacin was measured at 340 nm over the concentration range 4-40 ng/ml for hydroxychloroquine and 200-2000 ng/ml for ofloxacin with LOD of 0.467 and 25.3 ng/ml and LOQ of 1.42 and 76.6 ng/ml, respectively, for the two drugs. The two methods were validated following International Conference on Harmonization guidelines and were applied to the analysis of the two drugs in plasma with good percentage recoveries (109.73-93.17%).
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Affiliation(s)
- Asmaa El-Sayed
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Heba Mohamed Elmansi
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Shereen Shalan
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Manal Eid
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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2
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Shahzad A, Arshad S, Zubair F, Shahzad S, Batool F, Fu Q. Development and Validation of Facile RP-HPLC Method for Simultaneous Determination of Timolol Maleate, Moxifloxacin Hydrochloride, Diclofenac Sodium and Dexamethasone in Plasma, Aqueous Humor and Pharmaceutical Products. J Chromatogr Sci 2023; 61:678-687. [PMID: 35870199 DOI: 10.1093/chromsci/bmac057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 06/02/2022] [Accepted: 06/17/2022] [Indexed: 08/22/2023]
Abstract
The present study aimed to develop a validated RP-HPLC method for the simultaneous determination of timolol maleate (TM), moxifloxacin hydrochloride (MOXI), diclofenac sodium (DS) and dexamethasone (DEXA) in human plasma, bovine aqueous humor and pharmaceutical preparations. The chromatographic separation was studied using the C18 column. The chromatographic conditions, such as composition, pH, the flow rate of mobile phase, the temperature of column, wavelength of absorption and injection volume of the sample, were studied. The method was validated to confirm specificity, linearity and accuracy in accordance with an International Conference on Harmonization guidelines. The optimum conditions for separation included mobile phase 0.05 M monobasic phosphate buffer: acetonitrile (65:35 v/v), pH of buffer adjusted to 6.2 and the flow rate of 1 mL/minute. The optimum temperature of the column was found to be 35°C, absorption wavelength 265 nm and injection volume 50 μL. The baseline separation of all four drugs with good sensitivity, resolution, and a less than 15 min run time was achieved. The retention time of TM, MOXI, DS and DEXA were 4.3,5.7,9.9 and 13.5 minutes respectively. The limit of detection (LOD) values were 6.2, 4.8, 0.8 and 1.2 ng/mL for TM, MOXI, DS and DEXA, respectively, whereas their respective limit of quantification (LOQ) values was: were 42.6, 26.8, 5.6 and 6.2 ng/mL. The coefficient of variation for intra-day and inter-day were in the range of 0.32-1.57 and 1.29-3.07%, respectively. The method was found to be sensitive, precise and accurate in human plasma and bovine aqueous humor and can be applied for the quantification of these compounds in plasma, aqueous humor and pharmaceuticals.
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Affiliation(s)
- Aqeel Shahzad
- Department of Pharmaceutical Analysis, School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Sohail Arshad
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Faryal Zubair
- Department of Pharmaceutical Analysis, School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Shakeel Shahzad
- Institute of Microbiology, University of Agriculture Faisalabad, Punjab 38040, Pakistan
- Faculty of Medicine and Health, University of New South Wales Sydney, NSW 2052, Australia
| | - Farzana Batool
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Qiang Fu
- Department of Pharmaceutical Analysis, School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
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3
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Liang YK, Cheng WT, Chen LC, Sheu MT, Lin HL. Development of a Swellable and Floating Gastroretentive Drug Delivery System ( sfGRDDS) of Ciprofloxacin Hydrochloride. Pharmaceutics 2023; 15:pharmaceutics15051428. [PMID: 37242670 DOI: 10.3390/pharmaceutics15051428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/27/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Sangelose® (SGL) is a novel hydroxypropyl methylcellulose (HPMC) derivative that has been hydrophobically modified. Due to its high viscosity, SGL has the potential as a gel-forming and release-rate-controlled material for application in swellable and floating gastroretentive drug delivery systems (sfGRDDS). The aim of this study was to develop ciprofloxacin (CIP)-loaded sfGRDDS tablets comprised of SGL and HPMC in order to extend CIP exposure in the body and achieve optimal antibiotic treatment regimes. Results illustrated that SGL-HPMC-based sfGRDDS could swell to a diameter above 11 mm and showed a short floating lag time (<4 s) and long total floating time (>24 h) to prevent gastric emptying. In dissolution studies, CIP-loaded SGL-HPMC sfGRDDS demonstrated a specific biphasic release effect. Among the formulations, the SGL/type-K HPMC 15,000 cps (HPMC 15K) (50:50) group exhibited typical biphasic release profiles, with F4-CIP and F10-CIP individually releasing 72.36% and 64.14% CIP within 2 h dissolution, and sustaining release to 12 h. In pharmacokinetic studies, the SGL-HPMC-based sfGRDDS demonstrated higher Cmax (1.56-1.73 fold) and shorter Tmax (0.67 fold) than HPMC-based sfGRDDS. Furthermore, SGL 90L in GRDDS indicated an excellent biphasic release effect and a maximum elevation of relative bioavailability (3.87 fold). This study successfully combined SGL and HPMC to manufacture sfGRDDS that retain CIP in the stomach for an optimal duration while improving its pharmacokinetic characteristics. It was concluded that the SGL-HPMC-based sfGRDDS is a promising biphasic antibiotic delivery system that can both rapidly achieve the therapeutic antibiotic concentration and maintain the plasma antibiotic concentration for an extended period to maximize antibiotic exposure in the body.
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Affiliation(s)
- Yu-Kai Liang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Wen-Ting Cheng
- Department of Biotechnology and Pharmaceutical Technology, Yuanpei University of Medical Technology, Hsinchu 30015, Taiwan
| | - Ling-Chun Chen
- Department of Biotechnology and Pharmaceutical Technology, Yuanpei University of Medical Technology, Hsinchu 30015, Taiwan
| | - Ming-Thau Sheu
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan
| | - Hong-Liang Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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Khan MN, Zaman N, Mursaleen M, Naz F, Ullah Z. Eco-friendly approach for determination of moxifloxacin in pharmaceutical preparations and biological fluids through fluorescence quenching of eosin Y. ANAL SCI 2022; 38:1541-1547. [PMID: 36198989 DOI: 10.1007/s44211-022-00192-6] [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: 08/15/2022] [Accepted: 09/18/2022] [Indexed: 11/28/2022]
Abstract
An easy, verified spectrofluorimetric approach was established for the investigation of moxifloxacin in pure forms, pharmaceutical preparations, and biological fluids. The approach involves forming a binary complex of moxifloxacin and eosin Y in an acetate buffer with a pH of 3.6. The highest quenching of eosin Y with moxifloxacin occurs at 545 nm. Several factors, such as pH, buffer type and concentration, and eosin Y concentration, were carefully studied. The calibration graph showed a linear relationship between fluorescence intensity and moxifloxacin concentrations between 0.2 and 10 µg mL-1 with a correlation coefficient of 0.998. It was determined that the detection and quantification limits were 0.0322 µg mL-1 and 0.0976 µg mL-1, respectively. The impact of common excipients was investigated, but no interferences were discovered. Standard forms of moxifloxacin, pharmaceuticals, and biological samples have all been studied using the established methodology. The method, which successfully complied with ICH requirements, was used for the analysis of moxifloxacin in its pure form, pharmaceutical dosage forms, and biological samples. The percentage recoveries obtained were ranged from 99.50 to 102.50% for pharmaceutical preparations and from 100.50 to 102.50% for human blood plasma and urine. Proposed mechanisms for the reaction between moxifloxacin and eosin Y.
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Affiliation(s)
- Muhammad Naeem Khan
- Department of Chemistry, Allama Iqbal Open University, Islamabad, 44000, Pakistan.
| | - Noor Zaman
- Department of Chemistry, Bacha Khan University Charsadda, Charsadda, 24420, Pakistan
| | - Muhammad Mursaleen
- Department of Chemistry, Bacha Khan University Charsadda, Charsadda, 24420, Pakistan
| | - Falak Naz
- Department of Chemistry, Bacha Khan University Charsadda, Charsadda, 24420, Pakistan
| | - Zafran Ullah
- Department of Chemical Engineering, Universitas Diponegoro, Semarang, 50275, Indonesia
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5
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Methods for Determination of Meropenem Concentration in Biological Samples. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2022. [DOI: 10.2478/sjecr-2022-0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Measuring the concentration of antibiotics in biological samples allow implementation of therapeutic monitoring of these drugs and contribute to the adjustment of the dosing regimen in patients. This increases the effectiveness of antimicrobial therapy, reduces the toxicity of these drugs and prevents the development of bacterial resistance. This review article summarizes current knowledge on methods for determining concentration of meropenem, an antibiotic drug from the group of carbapenems, in different biological samples. It provides a brief discussion of the chemical structure, physicochemical and pharmacokinetic properties of meropenem, different sample preparation techniques, use of apparatus and equipment, knowledge of the advantages and limitations of available methods, as well as directions in which new methods should be developed. This review should facilitate clinical laboratories to select and apply one of the established methods for measuring of meropenem, as well as to provide them with the necessary knowledge to develop new methods for quantification of meropenem in biological samples according to their needs.
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Sasongko L, Pratiwi GK, Leo M, Adiwidjaja J. Simultaneous HPLC Assay of Gliclazide and Ciprofloxacin in Plasma and its Implementation for Pharmacokinetic Study in Rats. J Chromatogr Sci 2021; 59:338-346. [PMID: 33401303 DOI: 10.1093/chromsci/bmaa111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 09/15/2020] [Indexed: 01/15/2023]
Abstract
A simple and reliable high-performance liquid chromatography method for simultaneous quantitation of gliclazide and ciprofloxacin in plasma sample has been developed and validated. This method implements protein precipitation, a simple and practical pretreatment method by the addition of acetonitrile that gives a clean supernatant. The separation was carried out in a system consisted of a C18 column with acetonitrile and KH2PO4 (0.01 M, 0.1% v/v of triethylamine, pH 2.7) as the mobile phase in a gradient elution at a total flow-rate of 1 mL/min. Gliclazide and ciprofloxacin were quantitated using an ultraviolet detector set at wavelengths of 229 and 277 nm, respectively, which ensures optimal sensitivity for both compounds. This method possesses an excellent linearity at concentration ranges of 0.5-50 mg/L for gliclazide and 0.1-10 mg/L for ciprofloxacin. High within- and between-run accuracy for both gliclazide (% error of -8.00 to 0.45%) and ciprofloxacin (% error of -10.00 to 7.63%) were demonstrated. The intra- and inter-day precision (expressed as %CV) was <8 and 12% for gliclazide and ciprofloxacin, respectively. Both analytes were stable during storage and sample processing. The method reported in this study can be implemented for pharmacokinetic interaction study in rats.
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Affiliation(s)
- Lucy Sasongko
- Department of Pharmaceutics, School of Pharmacy, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Gladdis K Pratiwi
- Department of Pharmaceutics, School of Pharmacy, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Margaretha Leo
- Department of Pharmaceutics, School of Pharmacy, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Jeffry Adiwidjaja
- Department of Pharmaceutics, School of Pharmacy, Institut Teknologi Bandung, Bandung 40132, Indonesia.,Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
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7
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Direct infusion nano-electrospray ionization mass spectrometry for therapeutic drug monitoring of ciprofloxacin and its metabolites in human saliva. J Pharm Biomed Anal 2020; 195:113866. [PMID: 33388644 DOI: 10.1016/j.jpba.2020.113866] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 12/17/2020] [Accepted: 12/19/2020] [Indexed: 11/21/2022]
Abstract
A rapid and sensitive method based on direct infusion-nano-electrospray ionization mass spectrometry (DI-nESI-MS) has been developed for the detection and quantification of ciprofloxacin and its metabolites in human saliva. Saliva samples were collected after the oral administration of 500 mg ciprofloxacin tablets. Internal standard (IS), tamoxifen, was added to the collected samples, and then diluted with the ionization solvent, centrifuged and filtered. An aliquot of 4 μL of the filtrate was loaded into a nanospray (NS) capillary. The NS capillary was then fitted into an off-line ion source and the instrument was operated to acquire a two-minute run by applying a voltage of 1000 V (positive-ion detection mode). Quantification of ciprofloxacin relied on the ratio of its peak intensity to the IS peak intensity. The DI-nESI-MS method was validated and provided satisfactory precision with relative standard deviation ranging from 0.39 to 7.48 % and accuracy with relative error ranging from -2.12 to 9.72 %. The calibration curve showed good linearity (r2) > 0.999 over the concentration range of 10-4000 ng/mL. These results verify the effectiveness of the DI-nESI-MS method for monitoring of ciprofloxacin and its metabolites in human saliva samples.
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Hatamluyi B, Modarres Zahed F, Es'haghi Z, Darroudi M. Carbon Quantum Dots Co‐catalyzed with ZnO Nanoflowers and Poly (CTAB) Nanosensor for Simultaneous Sensitive Detection of Paracetamol and Ciprofloxacin in Biological Samples. ELECTROANAL 2020. [DOI: 10.1002/elan.201900412] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Behnaz Hatamluyi
- Pharmacological Research Center of Medicinal PlantsMashhad University of Medical Sciences Mashhad Iran
- Student Research CommitteeMashhad University of Medical Sciences Mashhad Iran
| | | | - Zarrin Es'haghi
- Department of ChemistryPayame Noor University 19395-4697 Tehran I.R. of IRAN
| | - Majid Darroudi
- Nuclear Medicine Research CenterMashhad University of Medical Sciences Mashhad Iran
- Department of Medical Biotechnology and Nanotechnology, School of MedicineMashhad University of Medical Sciences Mashhad Iran
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Sharma P, Kumar D, Mutnuri S. Probing the degradation of pharmaceuticals in urine using MFC and studying their removal efficiency by UPLC-MS/MS. J Pharm Anal 2020; 11:320-329. [PMID: 34277120 PMCID: PMC8264381 DOI: 10.1016/j.jpha.2020.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 04/17/2020] [Accepted: 04/21/2020] [Indexed: 11/30/2022] Open
Abstract
Nutrient recovery from source-separated human urine has attracted interest as it is rich in nitrogen and phosphorus that can be utilized as fertilizer. However, urine also contains pharmaceuticals, steroid hormones, etc. and their removal is crucial as they have detrimental effects on the environment and human health. The current study focuses on investigating the degradation of pharmaceuticals using a double-chamber microbial fuel cell (MFC). Urine was spiked with four pharmaceuticals (trimethoprim, lamivudine, levofloxacin, and estrone) at a concentration of 2 μg/mL. The MFC was operated for 7 months in batch mode with this spiked urine as feed. The degradation efficiency of the MFC was studied, for which a selective liquid chromatography-tandem mass-spectrometric method was developed for the quantitation of compounds used in the spiking experiments and was validated with a lower limit of quantification of 0.39 ng/mL. The maximum removal rate achieved was 96% ± 2%. The degradation mechanism involved processes like sorption and anoxic biodegradation. The voltage curve obtained showed that the presence of pharmaceuticals had an initial negative impact on power generation along with increased organic content; however, after the reactor acclimatization, increased power output was achieved with maximum organics removal at 30 h of retention time. This work opens a new perspective for the anoxic biodegradation of pharmaceuticals and can be useful in future bioremediation studies. Biodegradation of the pharmaceuticals was shown in urine using MFC system. MFC experiment conducted with urine spiked with four pharmaceuticals belonging to different class. The developed LCMS method was used to quantify the rate of degradation. Maximum degradation rate of 96 ± 2% was achieved. The microbial oxidation of organics in MFC suggest that it can be a promising technology for pharmaceuticals degradation from urine.
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Affiliation(s)
- Priya Sharma
- Applied Environmental Biotechnology Laboratory, Birla Institute of Technology & Science (BITS), Pilani, 403726, Zuarinagar, India
| | - Devendra Kumar
- Central Sophisticated Instrumentation Facility, Birla Institute of Technology & Science (BITS), Pilani, 403726, Zuarinagar, India.,Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198-602, USA
| | - Srikanth Mutnuri
- Applied Environmental Biotechnology Laboratory, Birla Institute of Technology & Science (BITS), Pilani, 403726, Zuarinagar, India
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Kalhor P, Xu J, Ashraf H, Cao B, Yu ZW. Structural Properties and Hydrogen-Bonding Interactions in Binary Mixtures Containing a Deep-Eutectic Solvent and Acetonitrile. J Phys Chem B 2020; 124:1229-1239. [PMID: 31984745 DOI: 10.1021/acs.jpcb.9b10751] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Deep-eutectic solvents (DESs) are a new class of green solvents. Here, we report the hydrogen bonding and structural properties of the archetypal DES ethaline, a mixture of choline chloride (ChCl) and ethylene glycol (EG) of a 1:2 molar ratio, and its pseudo-binary mixtures with acetonitrile. The investigations were carried out employing Fourier-transform infrared (FTIR) spectroscopy combined with quantum chemical calculations. Excess and two-dimensional (2D)-correlation spectroscopies were used to identify favorable species in the solutions and to explore the heterogeneity. The results show that the mixing process is the transformation from ethaline and CH3CN dimer to the complexes of ethaline-1CH3CN and ethaline-2CH3CN, together with the increased percentages of the EG dimer, EG trimer, and CH3CN monomer with respect to their total amounts in the mixtures. Theoretical calculations show that, for ChCl, the positive charge is located at the methyl groups and methylenes, rendering their ability to form hydrogen bonds. Adding CH3CN to ethaline can hardly break apart the doubly ionic hydrogen bonds between Ch+ and Cl-. The cosolvent molecules mainly surround the core structure of ethaline, forming noncovalent hydrogen bonds with hydroxyl groups of EG/Ch+ but not Cl-. These in-depth studies on the properties of ethaline and CH3CN/CD3CN mixed solvents may shed light on exploring their applications.
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Affiliation(s)
- Payam Kalhor
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Jing Xu
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Hamad Ashraf
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Bobo Cao
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Zhi-Wu Yu
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry , Tsinghua University , Beijing 100084 , China
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11
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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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12
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Ferrone V, Cotellese R, Cichella A, Raimondi P, Carlucci M, Palumbo P, Carlucci G. Meropenem and ciprofloxacin in complicated gastric surgery for cancer patients: A simple SPE–UHPLC–PDA method for their determination in human plasma. Biomed Chromatogr 2019; 33:e4450. [DOI: 10.1002/bmc.4450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/15/2018] [Accepted: 11/27/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Vincenzo Ferrone
- Dipartimento di FarmaciaOrali e Biotecnologiche ‐ Università degli Studi “G. d'Annunzio” Chieti‐Pescara Chieti Italy
| | - Roberto Cotellese
- Dipartimento di Scienze MedicheOrali e Biotecnologiche ‐ Università degli Studi “G. d'Annunzio” Chieti‐Pescara Chieti Italy
| | - Annadomenica Cichella
- Dipartimento di Scienze MedicheOrali e Biotecnologiche ‐ Università degli Studi “G. d'Annunzio” Chieti‐Pescara Chieti Italy
| | - Paolo Raimondi
- Dipartimento di Scienze MedicheOrali e Biotecnologiche ‐ Università degli Studi “G. d'Annunzio” Chieti‐Pescara Chieti Italy
| | - Maura Carlucci
- Dipartimento di Scienze MedicheOrali e Biotecnologiche ‐ Università degli Studi “G. d'Annunzio” Chieti‐Pescara Chieti Italy
| | - Paola Palumbo
- Dipartimento di Medicina Clinica, Sanità PubblicaScienze della Vita e dell'Ambiente ‐ Università degli studi di L'Aquila L'Aquila Italy
| | - Giuseppe Carlucci
- Dipartimento di FarmaciaOrali e Biotecnologiche ‐ Università degli Studi “G. d'Annunzio” Chieti‐Pescara Chieti Italy
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13
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Results of a Multicenter Population Pharmacokinetic Study of Ciprofloxacin in Children with Complicated Urinary Tract Infection. Antimicrob Agents Chemother 2018; 62:AAC.00517-18. [PMID: 29987142 DOI: 10.1128/aac.00517-18] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/20/2018] [Indexed: 12/15/2022] Open
Abstract
Resistance rates for ciprofloxacin, which is labeled for treating complicated urinary tract infections in children, are rapidly rising. As there is limited knowledge on developmental pharmacology of ciprofloxacin, the primary aim of this study was to develop a population pharmacokinetic model for ciprofloxacin in children treated for complicated urinary tract infections. Children to whom ciprofloxacin was prescribed, intravenous (10 to 15 mg/kg body weight every 12 h) or per os (15 to 20 mg/kg every 12 h), were enrolled. One hundred eight serum and 119 urine samples were obtained during 10 intravenous and 13 oral courses of ciprofloxacin in 22 patients (age range, 0.31 to 15.51 years). A one-compartment model best described our data. Fat-free mass and glomerular filtration rate (estimated by a formula using cystatin C and creatinine), standardized for body surface area, were significant covariates for ciprofloxacin clearance. In our population, ciprofloxacin clearance is 0.16 to 0.43 liter/h/kg of body weight, volume of distribution 0.06 to 2.88 liters/kg, and bioavailability 59.6%. All of our patients had a clinical cure of their infection. Based on target attainment simulations across doses, all children reached the pharmacodynamic target for Enterobacteriaceae, but on average only 53% did for Pseudomonas aeruginosa and 3% for Staphylococcus aureus, at the 15-mg/kg oral dose. For treating urinary tract infections caused by Pseudomonas aeruginosa, oral doses should be at least 20 mg/kg. Furthermore, in our population, fat-free mass and kidney function should be considered, as they prove to be significant covariates for ciprofloxacin clearance and, hence, exposure. (This study has been registered at ClinicalTrials.gov under identifier NCT02598362.).
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El-Zahry MR, Lendl B. Structure elucidation and degradation kinetic study of Ofloxacin using surface enhanced Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 193:63-70. [PMID: 29223055 DOI: 10.1016/j.saa.2017.12.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/22/2017] [Accepted: 12/01/2017] [Indexed: 06/07/2023]
Abstract
A simple, fast and sensitive surface enhanced Raman spectroscopy (SERS) method for quantitative determination of fluoroquinolone antibiotic Ofloxacin (OFX) is presented. Also the stability behavior of OFX was investigated by monitoring the SERS spectra of OFX after various degradation processes. Acidic, basic and oxidative force degradation processes were applied at different time intervals. The forced degradation conditions were conducted and followed using SERS method utilizing silver nanoparticles (Ag NPs) as a SERS substrate. The Ag NPs colloids were prepared by reduction of silver nitrate using polyethyelene glycol (PEG) as a reducing and stabilizing agent. Validation tests were done in accordance with International Conference on Harmonization (ICH) guidelines. The calibration curve with a correlation coefficient (R=0.9992) was constructed as a relationship between the concentration range of OFX (100-500ng/ml) and SERS intensity at 1394cm-1 band. LOD and LOQ values were calculated and found to be 23.5ng/ml and 72.6ng/ml, respectively. The developed method was applied successfully for quantitation of OFX in different pharmaceutical dosage forms. Kinetic parameters were calculated including rate constant of the degradation of the studied antibiotic.
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Affiliation(s)
- Marwa R El-Zahry
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, 71526 Assiut, Egypt.
| | - Bernhard Lendl
- Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/151, A-1060 Vienna, Austria
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Ferrone V, Cotellese R, Carlucci M, Di Marco L, Carlucci G. Air assisted dispersive liquid-liquid microextraction with solidification of the floating organic droplets (AA-DLLME-SFO) and UHPLC-PDA method: Application to antibiotics analysis in human plasma of hospital acquired pneumonia patients. J Pharm Biomed Anal 2018; 151:266-273. [DOI: 10.1016/j.jpba.2017.12.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 12/18/2017] [Accepted: 12/19/2017] [Indexed: 10/18/2022]
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Darweesh RS, Sakagami M. In vitro lung epithelial cell transport and anti-interleukin-8 releasing activity of liposomal ciprofloxacin. Eur J Pharm Sci 2018; 115:68-76. [PMID: 29337216 DOI: 10.1016/j.ejps.2018.01.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 11/28/2017] [Accepted: 01/08/2018] [Indexed: 01/14/2023]
Abstract
As a promising long-acting inhaled formulation, liposomal ciprofloxacin (Lipo-CPFX) was characterized in the in vitro human lung epithelial Calu-3 cell monolayer system, compared to ciprofloxacin in solution (CPFX). Its modulated absorptive transport and uptake, and sustained inhibitory activity against induced pro-inflammatory interleukin-8 (IL-8) release were examined. The absorptive transport and uptake kinetics for Lipo-CPFX and CPFX were determined at 0.1-50 mg/ml in the Transwell system. The Lipo-CPFX transport was then challenged for mechanistic exploration via cell energy depletion, a reduced temperature, endocytosis and/or lipid fusion inhibition, and addition of excess non-loaded liposomes. The inhibitory activities of Lipo-CPFX and CPFX against lipopolysaccharide (LPS)-induced IL-8 release were assessed in a co-incubation or pre-incubation mode. In the tight Calu-3 cell monolayers, Lipo-CPFX yielded 15-times slower ciprofloxacin flux of absorptive transport and 5-times lower cellular drug uptake than CPFX. Its transport appeared to be transcellular; kinetically linear, proportional to encapsulated ciprofloxacin concentration; and consistent with the cell energy-independent lipid bilayer fusion mechanism. Lipo-CPFX was equipotent to CPFX in the anti-IL-8 releasing activity upon 24 h co-incubation with LPS. Additionally, Lipo-CPFX, but not CPFX, retained the anti-IL-8 releasing activity even 24 h after pre-incubation. In conclusion, Lipo-CPFX enabled slower absorptive lung epithelial cell transport and uptake of ciprofloxacin, apparently via the lipid bilayer fusion mechanism, and the sustained inhibitory activity against LPS-induced IL-8 release, compared to CPFX.
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Affiliation(s)
- Ruba S Darweesh
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, 410 N. 12th Street, Richmond, Virginia, 23298, USA.; Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, 22,110, Jordan
| | - Masahiro Sakagami
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, 410 N. 12th Street, Richmond, Virginia, 23298, USA..
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Emami J, Rezazadeh M. A simple and sensitive high-performance liquid chromatography method for determination of ciprofloxacin in bioavailability studies of conventional and gastroretentive prolonged-release formulations. Adv Biomed Res 2016; 5:163. [PMID: 27995102 PMCID: PMC5137234 DOI: 10.4103/2277-9175.190995] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Accepted: 01/30/2016] [Indexed: 11/12/2022] Open
Abstract
Background: A very simple, sensitive, and accurate high-performance liquid chromatography (HPLC) method with ultraviolet detector was developed and applied to determine ciprofloxacin in human plasma following administration of a gastroretentive formulation developed in our laboratory. Materials and Methods: HPLC analysis was performed on a C18 μ-Bondapack column (250 mm × 3.9 mm) using acetonitrile: potassium dihydrogen phosphate solution 0.1 M (20:80, v/v, pH 3) at a flow rate of 1.5 ml/min and eluate was monitored at 276 nm. After addition of phenacetin as internal standard, plasma samples were treated with 0.1 M phosphate buffer (pH: 7) and followed by extraction with dichloromethane. The method was validated for linearity, precision, accuracy, limit of quantitation (LOQ), robustness, stability, and applied in bioavailability studies of our developed gastroretentive formulation in healthy volunteers. Results: The calibration curves were linear over the concentration range 0.025–4 μg/ml with the detection limit of 15 ng/ml. Accuracy % were within 93–115 and the coefficient of variance % ranged from 0.20 to 12.8. The very low LOQ (25 ng/ml) allowed avoiding fluorometric detection which is more expensive and is not available in all laboratories. Ciprofloxacin was stable in samples with no evidence of degradation during 3 freeze-thaw cycles and 3 months storage at –70°C. Conclusion: This validated HPLC method was successfully used for the determination of ciprofloxacin in human plasma following oral administration of controlled release formulation, conventional immediate-release tablets and when administered concomitantly with divalent and trivalent cations such as aluminum-, magnesium-, or calcium-containing products under which the bioavailability of ciprofloxacin is significantly reduced.
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Affiliation(s)
- Jaber Emami
- Department of Pharmaceutics, Isfahan Pharmaceutical Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahboubeh Rezazadeh
- Department of Pharmaceutics and Novel Drug Delivery Systems Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
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Ferrone V, Carlucci M, Cotellese R, Raimondi P, Cichella A, Marco LD, Carlucci G. Development and validation of a fast micro-extraction by packed sorbent UHPLC-PDA method for the simultaneous determination of linezolid and ciprofloxacin in human plasma from patients with hospital-acquired pneumonia. Talanta 2016; 164:64-68. [PMID: 28107984 DOI: 10.1016/j.talanta.2016.11.014] [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] [Received: 07/15/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 10/20/2022]
Abstract
An ultra high-performance liquid chromatographic (UHPLC) method with PDA detection was developed and validated for the simultaneous quantification of linezolid and ciprofloxacin in human plasma and applied in hospital acquired pneumonia patients (HAP). The method uses a semi-automated microextraction by packed sorbent for sample preparation. All parameters in the extraction step (pH, sample volume, sample dilution and number of aspiration - ejection cycles) and in the desorption step (percentage of acetonitrile in the solvent of elution and number of aspirations of elution solvent through the device) were statistically significant when the recovery was used as response. The method showed good linearity with correlation coefficients, r2>0.9995 for the two drugs, as well as high precision (RSD%<9.77% in each case), accuracy ranged from -6.2% to +8.2. The limit of quantification of the two drugs was established at 0.01 and 0.02μg/mL for ciprofloxacin and linezolid, respectively. Linezolid, ciprofloxacin and internal standard were extracted from human plasma with a mean recovery ranging from 92.4% to 97.4%. During validation, the concentrations of linezolid and ciprofloxacin were found to be stable after 3 freeze-thaw cycles and for at least 24h after extraction. This method will subsequently be used to quantify the drugs dosage in patients with HAP to establish if the dosage regimen given is sufficient to eradicate the infection at the target site.
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Affiliation(s)
- Vincenzo Ferrone
- Dipartimento di Farmacia, Università degli Studi "G. d'Annunzio" Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy
| | - Maura Carlucci
- Dipartimento di Scienze Mediche Orali e Biotecnologiche, Università degli Studi "G. d'Annunzio" Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy
| | - Roberto Cotellese
- Dipartimento di Scienze Mediche Orali e Biotecnologiche, Università degli Studi "G. d'Annunzio" Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy
| | - Paolo Raimondi
- Dipartimento di Scienze Mediche Orali e Biotecnologiche, Università degli Studi "G. d'Annunzio" Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy
| | - Annadomenica Cichella
- Dipartimento di Scienze Mediche Orali e Biotecnologiche, Università degli Studi "G. d'Annunzio" Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy
| | - Lorenzo Di Marco
- Dipartimento di Farmacia, Università degli Studi "G. d'Annunzio" Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy
| | - Giuseppe Carlucci
- Dipartimento di Farmacia, Università degli Studi "G. d'Annunzio" Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy.
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Multiple response optimization of a liquid chromatographic method for determination of fluoroquinolone and nitroimidazole antimicrobials in serum and urine. Clin Biochem 2016; 49:587-95. [DOI: 10.1016/j.clinbiochem.2015.12.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/16/2015] [Accepted: 12/19/2015] [Indexed: 11/21/2022]
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Khan FU, Nasir F, Iqbal Z, Khan I, Shahbaz N, Hassan M, Ullah F. Simultaneous determination of moxifloxacin and ofloxacin in physiological fluids using high performance liquid chromatography with ultraviolet detection. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1017-1018:120-128. [DOI: 10.1016/j.jchromb.2016.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 11/29/2022]
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21
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Determination of Ciprofloxacin in Human Serum by Online Heart-Cutting Liquid Chromatography. Chromatographia 2016. [DOI: 10.1007/s10337-015-3013-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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LIM SA, AHMED MU. A Simple DNA-based Electrochemical Biosensor for Highly Sensitive Detection of Ciprofloxacin Using Disposable Graphene. ANAL SCI 2016; 32:687-93. [DOI: 10.2116/analsci.32.687] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Syazana A LIM
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam
| | - Minhaz U AHMED
- Biosensors and Biotechnology Laboratory, Chemical Science Programme, Faculty of Science, Universiti Brunei Darussalam
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Lee SJ, Desta KT, Eum SY, Dartois V, Cho SN, Bae DW, Shin SC. Development and validation of LC-ESI-MS/MS method for analysis of moxifloxacin and levofloxacin in serum of multidrug-resistant tuberculosis patients: Potential application as therapeutic drug monitoring tool in medical diagnosis. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1009-1010:138-43. [DOI: 10.1016/j.jchromb.2015.11.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 10/23/2015] [Accepted: 11/22/2015] [Indexed: 11/26/2022]
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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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Vella J, Busuttil F, Bartolo NS, Sammut C, Ferrito V, Serracino-Inglott A, Azzopardi LM, LaFerla G. A simple HPLC–UV method for the determination of ciprofloxacin in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 989:80-5. [DOI: 10.1016/j.jchromb.2015.01.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 12/03/2014] [Accepted: 01/04/2015] [Indexed: 10/24/2022]
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Moxifloxacin hydrochloride. PROFILES OF DRUG SUBSTANCES, EXCIPIENTS, AND RELATED METHODOLOGY 2014; 39:299-431. [PMID: 24794910 DOI: 10.1016/b978-0-12-800173-8.00007-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A comprehensive profile of moxifloxacin HCl with 198 references is reported. A full description including nomenclature, formulae, elemental analysis, and appearance is included. Methods of preparation for moxifloxacin HCl, its intermediates, and derivatives are fully described. In addition, the physical properties, analytical methods, stability, uses and applications, and pharmacology of moxifloxacin HCl are also discussed.
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Elgizawy SM, Hassan NY, Lotfy HM, Saleh SS. Comparative study of RP-HPLC versus TLC-spectrodensitometric methods applied for binary mixtures of fluoroquinolones and corticosteroids. ACTA CHROMATOGR 2014. [DOI: 10.1556/achrom.26.2014.3.4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Colin P, Eleveld DJ, Struys MMRF, T'Jollyn H, Bortel LMV, Ruige J, De Waele J, Van Bocxlaer J, Boussery K. Moxifloxacin dosing in post-bariatric surgery patients. Br J Clin Pharmacol 2014; 78:84-93. [PMID: 24313873 PMCID: PMC4168383 DOI: 10.1111/bcp.12302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 11/05/2013] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Given the ever increasing number of obese patients and obesity related bypass surgery, dosing recommendations in the post-bypass population are needed. Using a population pharmacokinetic (PK) analysis and PK-pharmacodynamic (PD) simulations, we investigated whether adequate moxifloxacin concentrations are achieved in this population. METHODS In this modelling and simulation study we used data from a trial on moxifloxacin PK. In this trial, volunteers who had previously undergone bariatric surgery (at least 6 months prior to inclusion), received two doses (intravenous and oral) of 400 mg moxifloxacin administered on two occasions. RESULTS In contrast to other papers, we found that moxifloxacin PK were best described by a three compartmental model using lean body mass (LBM) as a predictor for moxifloxacin clearance. Furthermore, we showed that the probability of target attainment for bacterial eradication against a hypothetical Streptococcus pneumoniae infection is compromised in patients with higher LBM, especially when targeting microorganisms with minimum inhibitory concentrations (MICs) of 0.5 mg l(-1) or higher (probability of target attainment (PTA) approaching zero). When considering the targets for suppression of bacterial resistance formation, even at MIC values as low as 0.25 mg l(-1) , standard moxifloxacin dosing does not attain adequate levels in this population. Furthermore, for patients with a LBM of 78 kg or higher, the probability of hitting this target approaches zero. CONCLUSIONS Throughout our PK-PD simulation study, it became apparent that, whenever optimal bacterial resistance suppression is deemed necessary, the standard moxifloxacin dosing will not be sufficient. Furthermore, our study emphasizes the need for a LBM based individualized dosing of moxifloxacin in this patient population.
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Affiliation(s)
- Pieter Colin
- Laboratory of Medical Biochemistry and Clinical Analysis, Faculty of Pharmaceutical Sciences, Ghent UniversityGhent, Belgium
| | - Douglas J Eleveld
- Department of Anesthesiology, University Medical Center Groningen, University of GroningenGroningen, The Netherlands
| | - Michel M R F Struys
- Department of Anesthesiology, University Medical Center Groningen, University of GroningenGroningen, The Netherlands
- Department of Anesthesia, Ghent UniversityGhent, Belgium
| | - Huybrecht T'Jollyn
- Laboratory of Medical Biochemistry and Clinical Analysis, Faculty of Pharmaceutical Sciences, Ghent UniversityGhent, Belgium
| | - Luc M Van Bortel
- Heymans Institute of Pharmacology, Ghent UniversityGhent, Belgium
| | - Johannes Ruige
- Department Endocrinology and Metabolic Diseases, Ghent University HospitalGhent, Belgium
| | - Jan De Waele
- Department of Critical Care Medicine, Ghent University HospitalGhent, Belgium
| | - Jan Van Bocxlaer
- Laboratory of Medical Biochemistry and Clinical Analysis, Faculty of Pharmaceutical Sciences, Ghent UniversityGhent, Belgium
| | - Koen Boussery
- Laboratory of Medical Biochemistry and Clinical Analysis, Faculty of Pharmaceutical Sciences, Ghent UniversityGhent, Belgium
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Ramenskaya GV, Smerdin SV, Medvedev YV, Shokhin IE, Yarushok TA, Savchenko AY, Karlina VY. Development and validation of an ion-pair HPLC method for determination of perchlozone in blood plasma. Russ Chem Bull 2014. [DOI: 10.1007/s11172-014-0585-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cavazos-Rocha N, Carmona-Alvarado I, Vera-Cabrera L, Waksman-de-Torres N, Salazar-Cavazos MDLL. HPLC Method for the Simultaneous Analysis of Fluoroquinolones and Oxazolidinones in Plasma. J Chromatogr Sci 2014; 52:1281-7. [DOI: 10.1093/chromsci/bmu002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Electroanalytical Determination of Antibacterial Ciprofloxacin in Pure Form and in Drug Formulations. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/s13369-013-0851-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sousa J, Alves G, Campos G, Fortuna A, Falcão A. First liquid chromatography method for the simultaneous determination of levofloxacin, pazufloxacin, gatifloxacin, moxifloxacin and trovafloxacin in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 930:104-11. [DOI: 10.1016/j.jchromb.2013.04.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 04/25/2013] [Accepted: 04/27/2013] [Indexed: 11/28/2022]
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Ahmed H, Moussa B, El-Bagary R, Darwish M. Three validated methods for simultaneous determination of ofloxacin and dexamethasone in binary mixture. JPC-J PLANAR CHROMAT 2013. [DOI: 10.1556/jpc.26.2013.1.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Tamsulosin alters levofloxacin pharmacokinetics in prostates derived from rats with acute bacterial prostatitis. Asian J Androl 2013; 15:254-60. [PMID: 23353720 DOI: 10.1038/aja.2012.134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The combination of levofloxacin and α1 adrenergic antagonist treatment is the current preferred choice for both bacterial and non-bacterial prostatitis. The aim of this study is to explore the influence of α1 adrenergic antagonists on the pharmacokinetics of levofloxacin using rat models with acute bacterial prostatitis (ABP) induced by direct injection with Escherichia coli (ATCC25922). A total of 96 model rats were randomly assigned into two groups: the experimental group (treated with both tamsulosin and levofloxacin, n=48) and the control group (treated with levofloxacin and solvents, n=48). Six rats from each group were euthanized to collect blood, liver, kidney and prostate samples at the time points of 0.125, 0.25, 0.5, 1, 2, 4, 8 and 12 h after drug administration. The levofloxacin concentrations were detected by high performance liquid chromatography (HPLC), and the pharmacokinetic parameters were calculated using the 3p97 software program. There were no obvious differences (P>0.05) between the experimental and control groups in the major pharmacokinetic parameters of levofloxacin, including the halftime (t1/2), time to peak (tpeak), clearance rate (CL), maximum concentration (Cmax) and area under the curve (AUC0∼12), in the plasma or in the hepatic and kidney tissues of the model rats. However, in the prostatic tissues, tamsulosin increased the Cmax, prolonged the t1/2 and decreased the CL of levofloxacin (P<0.05). These results indicate that tamsulosin may enhance the effect of levofloxacin in the treatment of bacterial prostatitis without changing the drug concentration in the liver and kidney.
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Attimarad M, Al-Dhubiab BE, Alhaider IA, Nair AB, Sree HN, Mueen AK. Simultaneous determination of moxifloxacin and cefixime by first and ratio first derivative ultraviolet spectrophotometry. Chem Cent J 2012; 6:105. [PMID: 22995678 PMCID: PMC3517488 DOI: 10.1186/1752-153x-6-105] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Accepted: 09/03/2012] [Indexed: 11/10/2022] Open
Abstract
UNLABELLED BACKGROUND The new combination of moxifloxacin HCl and cefixime trihydrate is approved for the treatment of lower respiratory tract infections in adults. At initial formulation development and screening stage a fast and reliable method for the dissolution and release testing of moxifloxacin and cefixime were highly desirable. The zero order overlaid UV spectra of moxifloxacin and cefixime showed >90% overlapping. Hence, simple, accurate precise and validated two derivative spectrophotometric methods have been developed for the determination of moxifloxacin and cefixime. METHODS In the first derivative spectrophotometric method varying concentration of moxifloxacin and cefixime were prepared and scanned in the range of 200 to 400 nm and first derivative spectra were calculated (n = 1). The zero crossing wavelengths 287 nm and 317.9 nm were selected for determination of moxifloxacin and cefixime, respectively. In the second method the first derivative of ratio spectra was calculated and used for the determination of moxifloxacin and cefixime by measuring the peak intensity at 359.3 nm and 269.6 nm respectively. RESULTS Calibration graphs were established in the range of 1-16 μg /mL and 1-15 μg /mL for both the drugs by first and ratio first derivative spectroscopic methods respectively with good correlation coefficients. Average accuracy of assay of moxifloxacin and cefixime were found to be 100.68% and 98 93%, respectively. Relative standard deviations of both inter and intraday assays were less than 1.8%. Moreover, recovery of moxifloxacin and cefixime was more than 98.7% and 99.1%, respectively. CONCLUSIONS The described derivative spectrophotometric methods are simple, rapid, accurate, precise and excellent alternative to sophisticated chromatographic techniques. Hence, the proposed methods can be used for the quality control of the cited drugs and can be extended for routine analysis of the drugs in formulations.
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Affiliation(s)
- Mahesh Attimarad
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Bander E Al-Dhubiab
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Ibrahim A Alhaider
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Anroop B Nair
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Harsha N Sree
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Ahmed K Mueen
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
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Raju B, Ramesh M, Borkar RM, Srinivas R, Padiya R, Banerjee SK. In vivo metabolic investigation of moxifloxacin using liquid chromatography/electrospray ionization tandem mass spectrometry in combination with online hydrogen/deuterium exchange experiments. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:1817-1831. [PMID: 22777784 DOI: 10.1002/rcm.6288] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
RATIONALE Tuberculosis is a leading cause of death from an infectious disease and moxifloxacin is an effective drug as compared to other fluoroquinolones. To date only two metabolites of the drug are known. Therefore, the present study on characterization of hitherto unknown in vivo metabolites of moxifloxacin using liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) is undertaken. METHODS In vivo metabolites of moxifloxacin have been identified and characterized by using LC/ESI-MS/MS in combination with an online hydrogen/deuterium (H/D) exchange technique. To identify in vivo metabolites, blood, urine and faeces samples were collected after oral administration of moxifloxacin to Sprague-Dawley rats. The samples were prepared using an optimized sample preparation approach involving protein precipitation, liquid-liquid extraction followed by solid-phase extraction and LC/MS/MS analysis. RESULTS A total of nine phase I and ten phase II metabolites of moxifloxacin have been identified in urine samples including N-sulphated, glucuronide and hydroxylated metabolites which are also observed in plasma samples. In faeces samples, only the N-sulphated metabolite is observed. The structures of metabolites have been elucidated based on fragmentation patterns, accurate mass measurements and online H/D exchange LC/MS/MS experiments. Online H/D exchange experiments are used to support the identification and structural characterization of drug metabolites. CONCLUSIONS A total of 19 in vivo metabolites of moxifloxacin have been characterized using LC/ESI-MS/MS in combination with accurate mass measurements and online H/D exchange experiments. The main phase I metabolites of moxifloxacin are hydroxylated, decarbonylated, desmethylated and desmethylhydroxylated metabolites which undergo subsequent phase II glucuronidation pathways.
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Affiliation(s)
- B Raju
- National Centre for Mass Spectrometry, Indian Institute of Chemical Technology, Hyderabad, 500 007, India
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de Smet J, Colpaert K, de Paepe P, van Bocxlaer J, Decruyenaere J, Boussery K. Switch from intravenous to enteral moxifloxacin in critically ill patients: A pilot study. ACTA ACUST UNITED AC 2012; 44:874-8. [DOI: 10.3109/00365548.2012.693194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
PURPOSE To analyze the influence of corneal cross-linking (CXL) using ultraviolet-A and riboflavin on corneal drug penetration of topically applied drugs. METHODS In an ex vivo porcine eye model, eyes were randomly assigned to CXL or control treatment. Central corneal thickness and anterior chamber depth were measured with a Pentacam device. In the CXL group, eyes were treated with CXL using ultraviolet-A (370 nm) and riboflavin, whereas in the control group only riboflavin was applied without irradiation. Subsequently, 0.3% ofloxacin (n = 40 eyes) or 1% voriconazole (n = 40 eyes) eye drops were applied to the cornea every 5 minutes for 30 minutes. Aqueous humour samples were obtained performing an anterior chamber tap. The concentrations of ofloxacin and voriconazole were determined with high-pressure liquid chromatography. Groups were compared performing a Mann-Whitney test. RESULTS In the CXL group, the mean concentration of ofloxacin (13.33 ± 4.67 μg/mL) and voriconazole (52.70 ± 8.76 μg/mL) was significantly lower than in the untreated control group (ofloxacin: 18.51 ± 6.08 μg/mL, P = 0.005; voriconazole: 62.43 ± 13.5 μg/mL, P = 0.01). This corresponds to a reduction in permeability of 27.98% for ofloxacin and 15.59% for voriconazole. Central corneal thickness and anterior chamber depth were comparable in the CXL and control groups (P > 0.05, each). CONCLUSIONS CXL reduces the corneal permeability of ofloxacin and voriconazole. This may be of clinical significance, for example, in keratitis treatment.
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Raju B, Ramesh M, Borkar RM, Padiya R, Banerjee SK, Srinivas R. Development and validation of liquid chromatography-mass spectrometric method for simultaneous determination of moxifloxacin and ketorolac in rat plasma: application to pharmacokinetic study. Biomed Chromatogr 2012; 26:1341-7. [DOI: 10.1002/bmc.2701] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 12/12/2011] [Accepted: 12/12/2011] [Indexed: 11/08/2022]
Affiliation(s)
- B. Raju
- National Centre for Mass Spectrometry; Indian Institute of Chemical Technology; Hyderabad; 500 007; India
| | - M. Ramesh
- National Centre for Mass Spectrometry; Indian Institute of Chemical Technology; Hyderabad; 500 007; India
| | | | - Raju Padiya
- Division of Pharmacology, Discovery laboratory; Indian Institute of Chemical Technology; Hyderabad; 500 007; India
| | - Sanjay K. Banerjee
- Division of Pharmacology, Discovery laboratory; Indian Institute of Chemical Technology; Hyderabad; 500 007; India
| | - R. Srinivas
- National Centre for Mass Spectrometry; Indian Institute of Chemical Technology; Hyderabad; 500 007; India
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Sousa J, Alves G, Fortuna A, Falcão A. Analytical methods for determination of new fluoroquinolones in biological matrices and pharmaceutical formulations by liquid chromatography: a review. Anal Bioanal Chem 2012; 403:93-129. [DOI: 10.1007/s00216-011-5706-8] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2011] [Revised: 12/24/2011] [Accepted: 12/29/2011] [Indexed: 11/25/2022]
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Hubicka U, Krzek J, Żuromska B, Walczak M, Żylewski M, Pawłowski D. Determination of photostability and photodegradation products of moxifloxacin in the presence of metal ions in solutions and solid phase. Kinetics and identification of photoproducts. Photochem Photobiol Sci 2012; 11:351-7. [DOI: 10.1039/c1pp05259d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abdellaziz LM, Hosny MM. Development and validation of spectrophotometric, atomic absorption and kinetic methods for determination of moxifloxacin hydrochloride. ANALYTICAL CHEMISTRY INSIGHTS 2011; 6:67-78. [PMID: 22219661 PMCID: PMC3239224 DOI: 10.4137/aci.s8090] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Three simple spectrophotometric and atomic absorption spectrometric methods are developed and validated for the determination of moxifloxacin HCl in pure form and in pharmaceutical formulations. Method (A) is a kinetic method based on the oxidation of moxifloxacin HCl by Fe(3+) ion in the presence of 1,10 o-phenanthroline (o-phen). Method (B) describes spectrophotometric procedures for determination of moxifloxacin HCl based on its ability to reduce Fe (III) to Fe (II), which was rapidly converted to the corresponding stable coloured complex after reacting with 2,2' bipyridyl (bipy). The formation of the tris-complex formed in both methods (A) and (B) were carefully studied and their absorbance were measured at 510 and 520 nm respectively. Method (C) is based on the formation of ion- pair associated between the drug and bismuth (III) tetraiodide in acidic medium to form orange-red ion-pair associates. This associate can be quantitatively determined by three different procedures. The formed precipitate is either filtered off, dissolved in acetone and quantified spectrophotometrically at 462 nm (Procedure 1), or decomposed by hydrochloric acid, and the bismuth content is determined by direct atomic absorption spectrometric (Procedure 2). Also the residual unreacted metal complex in the filtrate is determined through its metal content using indirect atomic absorption spectrometric technique (procedure 3). All the proposed methods were validated according to the International Conference on Harmonization (ICH) guidelines, the three proposed methods permit the determination of moxifloxacin HCl in the range of (0.8-6, 0.8-4) for methods A and B, (16-96, 16-96 and 16-72) for procedures 1-3 in method C. The limits of detection and quantitation were calculated, the precision of the methods were satisfactory; the values of relative standard deviations did not exceed 2%. The proposed methods were successfully applied to determine the drug in its pharmaceutical formulations without interference from the common excipients. The results obtained by the proposed methods were comparable with those obtained by the reference method.
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Affiliation(s)
- Lobna M. Abdellaziz
- Medicinal Chemistry Department, Faculty of pharmacy, Zagazig University, Egypt
| | - Mervat M. Hosny
- Analytical Chemistry Department, Faculty of Pharmacy, Zagazig University, Egypt
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De Smet J, Colin P, De Paepe P, Ruige J, Batens H, Van Nieuwenhove Y, Vogelaers D, Blot S, Van Bocxlaer J, Van Bortel LM, Boussery K. Oral bioavailability of moxifloxacin after Roux-en-Y gastric bypass surgery. J Antimicrob Chemother 2011; 67:226-9. [DOI: 10.1093/jac/dkr436] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vavříková E, Polanc S, Kočevar M, Horváti K, Bősze S, Stolaříková J, Vávrová K, Vinšová J. New fluorine-containing hydrazones active against MDR-tuberculosis. Eur J Med Chem 2011; 46:4937-45. [DOI: 10.1016/j.ejmech.2011.07.052] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 07/27/2011] [Accepted: 07/29/2011] [Indexed: 11/29/2022]
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Muchohi SN, Thuo N, Karisa J, Muturi A, Kokwaro GO, Maitland K. Determination of ciprofloxacin in human plasma using high-performance liquid chromatography coupled with fluorescence detection: application to a population pharmacokinetics study in children with severe malnutrition. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:146-52. [PMID: 21185790 PMCID: PMC3025326 DOI: 10.1016/j.jchromb.2010.11.032] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 11/25/2010] [Accepted: 11/27/2010] [Indexed: 12/01/2022]
Abstract
Clinical pharmacokinetic studies of ciprofloxacin require accurate and precise measurement of plasma drug concentrations. We describe a rapid, selective and sensitive HPLC method coupled with fluorescence detection for determination of ciprofloxacin in human plasma. Internal standard (IS; sarafloxacin) was added to plasma aliquots (200 μL) prior to protein precipitation with acetonitrile. Ciprofloxacin and IS were eluted on a Synergi Max-RP analytical column (150 mm×4.6 mm i.d., 5 μm particle size) maintained at 40°C. The mobile phase comprised a mixture of aqueous orthophosphoric acid (0.025 M)/methanol/acetonitrile (75/13/12%, v/v/v); the pH was adjusted to 3.0 with triethylamine. A fluorescence detector (excitation/emission wavelength of 278/450 nm) was used. Retention times for ciprofloxacin and IS were approximately 3.6 and 7.0 min, respectively. Calibration curves of ciprofloxacin were linear over the concentration range of 0.02-4 μg/mL, with correlation coefficients (r(2))≥0.998. Intra- and inter-assay relative standard deviations (SD) were <8.0% and accuracy values ranged from 93% to 105% for quality control samples (0.2, 1.8 and 3.6 μg/mL). The mean (SD) extraction recoveries for ciprofloxacin from spiked plasma at 0.08, 1.8 and 3.6 μg/mL were 72.8±12.5% (n=5), 83.5±5.2% and 77.7±2.0%, respectively (n=8 in both cases). The recovery for IS was 94.5±7.9% (n=15). The limits of detection and quantification were 10 ng/mL and 20 ng/mL, respectively. Ciprofloxacin was stable in plasma for at least one month when stored at -15°C to -25°C and -70°C to -90°C. This method was successfully applied to measure plasma ciprofloxacin concentrations in a population pharmacokinetics study of ciprofloxacin in malnourished children.
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Affiliation(s)
- Simon N Muchohi
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Research Programme, Centre for Geographic Medicine Research (Coast), P.O. Box 230-80108, Kilifi, Kenya.
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High performance liquid chromatography assay with ultraviolet detection for moxifloxacin: Validation and application to a pharmacokinetic study in Chinese volunteers. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:3437-41. [DOI: 10.1016/j.jchromb.2010.10.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 10/22/2010] [Accepted: 10/25/2010] [Indexed: 11/22/2022]
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Davis LT, Kumar N, Nijm LM, Ulanski LJ, Tu EY, Fiscella RG, Peterson RJ, Glickman RD. An adaptable HPLC method for the analysis of frequently used antibiotics in ocular samples. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:2421-6. [DOI: 10.1016/j.jchromb.2010.08.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 07/29/2010] [Accepted: 08/02/2010] [Indexed: 10/19/2022]
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Sousa J, Alves G, Fortuna A, Pena A, Lino C, Falcão A. Development and validation of a fast isocratic liquid chromatography method for the simultaneous determination of norfloxacin, lomefloxacin and ciprofloxacin in human plasma. Biomed Chromatogr 2010; 25:535-41. [DOI: 10.1002/bmc.1480] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Accepted: 05/17/2010] [Indexed: 11/07/2022]
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Watabe S, Yokoyama Y, Nakazawa K, Shinozaki K, Hiraoka R, Takeshita K, Suzuki Y. Simultaneous measurement of pazufloxacin, ciprofloxacin, and levofloxacin in human serum by high-performance liquid chromatography with fluorescence detection. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:1555-61. [DOI: 10.1016/j.jchromb.2010.04.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 03/25/2010] [Accepted: 04/11/2010] [Indexed: 01/31/2023]
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Investigation of the Interaction Between Ofloxacin and Bovine Serum Albumin: Spectroscopic Approach. J SOLUTION CHEM 2010. [DOI: 10.1007/s10953-010-9527-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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