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Tang T, Luo X, Li N, Li Q, Zhang M, Zeng J, Song H, Li L, Chen W. A developed and validated centrifugal ultrafiltration coupled with high performance liquid chromatography-tandem mass spectrometry method for rapid quantification of unbound lenvatinib in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1240:124157. [PMID: 38761468 DOI: 10.1016/j.jchromb.2024.124157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 04/20/2024] [Accepted: 05/13/2024] [Indexed: 05/20/2024]
Abstract
In clinical practice, the determination of unbound drug concentration is very important for dose adjustment and toxicity prediction because only the unbound fraction can achieve a pharmacological effect. A fast, sensitive and accurate analytical method of centrifugal ultrafiltration coupled with high performance liquid chromatography-tandem mass spectrometry method was developed and applied to allow the quantification of unbound lenvatinib concentration. The application of linear regression analysis was used to examine the effects of centrifugal force, centrifugal time, and protein content on ultrafiltrate volume (Vu). The results indicated that the centrifugal force and centrifugal time have an influence on Vu that is significantly positive (P < 0.05). This developed method with good linearity (r2 = 0.9996), good accuracy (bias % ≤ 2.24 %), good precision (CV % ≤ 7.10 %), and good recovery (95.46 %-106.46 %) was suitable for routine clinical practice and studies. Particularly, the ultrafiltration membrane had no non-specific binding to lenvatinib. The unbound fractions can be separated in just 15 min. This method was applied to quantify clinical samples and to determine the plasma protein binding and unbound fraction of lenvatinib. This study provides a more effective and promising method for determination of unbound lenvatinib. It could be beneficial to measure the unbound concentration of lenvatinib in personalized medicine and therapeutic drug monitoring in routine clinical practice.
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Affiliation(s)
- Tiantian Tang
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Xianzhang Luo
- Hepatic Biliary & Pancreatic Cancer Center, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Na Li
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Qiaoqiao Li
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Min Zhang
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Jin Zeng
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Haichi Song
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Lixian Li
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China.
| | - Wanyi Chen
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, China.
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2
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Mekking XM, Velthoven-Graafland K, Teulen MJA, Brüggemann RJM, te Brake LHM, Jager NGL. Development and validation of an UPLC-MS/MS assay for the simultaneous quantification of seven commonly used antibiotics in human plasma and its application in therapeutic drug monitoring. J Antimicrob Chemother 2024; 79:883-890. [PMID: 38416407 PMCID: PMC10984926 DOI: 10.1093/jac/dkae047] [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: 11/23/2023] [Accepted: 02/02/2024] [Indexed: 02/29/2024] Open
Abstract
OBJECTIVE To develop and validate an UPLC-MS/MS assay for simultaneous determination of the total concentration of ceftazidime, ciprofloxacin, flucloxacillin, piperacillin, tazobactam, sulfamethoxazole, N-acetyl sulfamethoxazole and trimethoprim, and the protein-unbound concentration of flucloxacillin, in human plasma to be used for research and clinical practice. METHODS Sample pretreatment included protein precipitation with methanol. For the measurement of protein-unbound flucloxacillin, ultrafiltration was performed at physiological temperature. For all compounds, a stable isotopically labelled internal standard was used. Reliability of the results was assessed by participation in an international quality control programme. RESULTS The assay was successfully validated according to the EMA guidelines over a concentration range of 0.5-100 mg/L for ceftazidime, 0.05-10 mg/L for ciprofloxacin, 0.4-125 mg/L for flucloxacillin, 0.2-60 mg/L for piperacillin, 0.15-30 mg/L for tazobactam, 1-200 mg/L for sulfamethoxazole and N-acetyl sulfamethoxazole, 0.05-10 mg/L for trimethoprim and 0.10-50 mg/L for unbound flucloxacillin. For measurement of total concentrations, the within- and between-day accuracy ranged from 90.0% to 109%, and 93.4% to 108%, respectively. Within- and between-day precision (variation coefficients, CVs) ranged from 1.70% to 11.2%, and 0.290% to 5.30%, respectively. For unbound flucloxacillin, within-day accuracy ranged from 103% to 106% and between-day accuracy from 102% to 105%. The within- and between-day CVs ranged from 1.92% to 7.11%. Results of the international quality control programme showed that the assay is reliable. CONCLUSIONS The method provided reliable, precise and accurate measurement of seven commonly prescribed antibiotics, including the unbound concentration of flucloxacillin. This method is now routinely applied in research and clinical practice.
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Affiliation(s)
- Xin Meng Mekking
- School of Pharmacy, Utrecht University, Leuvenlaan 4, 3584 CE, Utrecht, The Netherlands
| | - Kirsten Velthoven-Graafland
- Department of Pharmacy, Radboud Institute for Medical Innovation, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Marga J A Teulen
- Department of Pharmacy, Radboud Institute for Medical Innovation, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Roger J M Brüggemann
- Department of Pharmacy, Radboud Institute for Medical Innovation, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Lindsey H M te Brake
- Department of Pharmacy, Radboud Institute for Medical Innovation, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Nynke G L Jager
- Department of Pharmacy, Radboud Institute for Medical Innovation, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
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Mouton JWA, Raaijmakers J, Botterblom M, Toonen M, ter Heine R, Smeets RL, Brüggemann RJM, te Brake L, Jager NGL. Development and validation of a bioanalytical assay for the measurement of total and unbound teicoplanin in human serum. J Antimicrob Chemother 2023; 78:2723-2730. [PMID: 37757461 PMCID: PMC10631822 DOI: 10.1093/jac/dkad290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND The glycopeptide teicoplanin is considered first-line treatment for severe infections caused by Gram-positive bacteria. Individualized treatment of teicoplanin is gaining interest. As only protein-unbound drug is pharmacologically active, a sensitive assay measuring unbound and total teicoplanin is indispensable for pharmacological research and dose optimization. OBJECTIVES To develop and validate a UPLC-MS/MS method to quantify unbound and total teicoplanin in human serum. METHODS The developed assay was validated according to the ICH guideline M10 on Bioanalytical Method Validation and study sample analysis. Unbound teicoplanin was obtained by ultrafiltration. The assay was cross-validated with a quantitative microsphere (QMS) immunoassay in a side-by-side comparison using 40 patient samples. RESULTS With the developed and validated method, all main teicoplanin components (A2-1, A2-2/A2-3, A2-4/A2-5 and A3-1) can be quantified. Total run time was 5.5 min. Concentration range was 2.5-150 mg/L for total and 0.1-25 mg/L for unbound teicoplanin. Precision (coefficient of variation) and accuracy (bias) of total teicoplanin were 5.97% and 107%, respectively, and 7.17% and 108%, respectively, for unbound teicoplanin.Bland-Altman analysis showed total concentrations measured with the UPLC-MS/MS method were equivalent to the results of the QMS immunoassay. A total of 188 samples from 30 patients admitted to the ICU and haematology department were measured; total concentrations ranged between 2.92 and 98.5 mg/L, and unbound concentrations ranged between 0.37 and 30.7 mg/L. CONCLUSIONS The developed method provided rapid, precise and accurate measurement of unbound and total teicoplanin. The developed method is now routinely applied in pharmacological research and clinical practice.
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Affiliation(s)
- J W A Mouton
- Department of Pharmacy, Radboud University Medical Center, Nijmegen, The Netherlands
| | - J Raaijmakers
- Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - M Botterblom
- Department of Pharmacy, Radboud University Medical Center, Nijmegen, The Netherlands
| | - M Toonen
- Department of Laboratory Medicine, Radboudumc Laboratory for Diagnostics, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - R ter Heine
- Department of Pharmacy, Radboud University Medical Center, Nijmegen, The Netherlands
| | - R L Smeets
- Department of Laboratory Medicine, Radboudumc Laboratory for Diagnostics, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - R J M Brüggemann
- Department of Pharmacy, Radboud University Medical Center, Nijmegen, The Netherlands
| | - L te Brake
- Department of Pharmacy, Radboud University Medical Center, Nijmegen, The Netherlands
| | - N G L Jager
- Department of Pharmacy, Radboud University Medical Center, Nijmegen, The Netherlands
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Köhler N, Karaköse H, Grobbel HP, Hillemann D, Andres S, König C, Kalsdorf B, Brehm TT, Böttcher L, Friesen I, Hoffmann H, Strelec D, Schaub D, Peloquin CA, Schmiedel S, Decosterd LA, Choong E, Wicha SG, Aarnoutse RE, Lange C, Sánchez Carballo PM. A Single-Run HPLC-MS Multiplex Assay for Therapeutic Drug Monitoring of Relevant First- and Second-Line Antibiotics in the Treatment of Drug-Resistant Tuberculosis. Pharmaceutics 2023; 15:2543. [PMID: 38004523 PMCID: PMC10674734 DOI: 10.3390/pharmaceutics15112543] [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: 09/27/2023] [Revised: 10/20/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
The treatment of drug-resistant Mycobacterium tuberculosis relies on complex antibiotic therapy. Inadequate antibiotic exposure can lead to treatment failure, acquired drug resistance, and an increased risk of adverse events. Therapeutic drug monitoring (TDM) can be used to optimize the antibiotic exposure. Therefore, we aimed to develop a single-run multiplex assay using high-performance liquid chromatography-mass spectrometry (HPLC-MS) for TDM of patients with multidrug-resistant, pre-extensively drug-resistant and extensively drug-resistant tuberculosis. A target profile for sufficient performance, based on the intended clinical application, was established and the assay was developed accordingly. Antibiotics were analyzed on a zwitterionic hydrophilic interaction liquid chromatography column and a triple quadrupole mass spectrometer using stable isotope-labeled internal standards. The assay was sufficiently sensitive to monitor drug concentrations over five half-lives for rifampicin, rifabutin, levofloxacin, moxifloxacin, bedaquiline, linezolid, clofazimine, terizidone/cycloserine, ethambutol, delamanid, pyrazinamide, meropenem, prothionamide, and para-amino salicylic acid (PAS). Accuracy and precision were sufficient to support clinical decision making (≤±15% in clinical samples and ±20-25% in spiked samples, with 80% of future measured concentrations predicted to fall within ±40% of nominal concentrations). The method was applied in the TDM of two patients with complex drug-resistant tuberculosis. All relevant antibiotics from their regimens could be quantified and high-dose therapy was initiated, followed by microbiological conversion. In conclusion, we developed a multiplex assay that enables TDM of the relevant first- and second-line anti-tuberculosis medicines in a single run and was able to show its applicability in TDM of two drug-resistant tuberculosis patients.
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Affiliation(s)
- Niklas Köhler
- Clinical Infectious Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Respiratory Medicine & International Health, University of Lübeck, 23562 Lübeck, Germany
| | - Hande Karaköse
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Bioanalytical Chemistry, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Hans-Peter Grobbel
- Clinical Infectious Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Respiratory Medicine & International Health, University of Lübeck, 23562 Lübeck, Germany
| | - Doris Hillemann
- National and World Health Organization Supranational Reference Laboratory for Mycobacteria, Research Center Borstel, 23845 Borstel, Germany
| | - Sönke Andres
- National and World Health Organization Supranational Reference Laboratory for Mycobacteria, Research Center Borstel, 23845 Borstel, Germany
| | - Christina König
- Department of Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- Department of Pharmacy, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Barbara Kalsdorf
- Clinical Infectious Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Respiratory Medicine & International Health, University of Lübeck, 23562 Lübeck, Germany
| | - Thomas Theo Brehm
- Division of Infectious Diseases, I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, 20246 Hamburg, Germany
| | - Laura Böttcher
- Clinical Infectious Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Respiratory Medicine & International Health, University of Lübeck, 23562 Lübeck, Germany
| | - Inna Friesen
- National and World Health Organization Supranational Reference Laboratory for Mycobacteria, Research Center Borstel, 23845 Borstel, Germany
| | - Harald Hoffmann
- Institute of Microbiology and Laboratory Medicine, World Health Organization Supranational Reference Laboratory of TB, IML red GmbH, 82131 Gauting, Germany
- SYNLAB Gauting, SYNLAB MVZ of Human Genetics Munich, 82131 Gauting, Germany
| | - Dražen Strelec
- Department for Lung Diseases, Hospital for Lung Diseases and Tuberculosis, 42244 Klenovnik, Croatia
| | - Dagmar Schaub
- Clinical Infectious Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Respiratory Medicine & International Health, University of Lübeck, 23562 Lübeck, Germany
| | - Charles A. Peloquin
- Infectious Disease Pharmacokinetics Laboratory, Emerging Pathogens Institute, University of Florida, Gainesville, FL 32610, USA
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
| | - Stefan Schmiedel
- Division of Infectious Diseases, I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, 20246 Hamburg, Germany
| | - Laurent A. Decosterd
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Eva Choong
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | | | - Rob E. Aarnoutse
- Department of Pharmacy, Radboud Institute for Medical Innovation, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Christoph Lange
- Clinical Infectious Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Respiratory Medicine & International Health, University of Lübeck, 23562 Lübeck, Germany
- Baylor College of Medicine and Texas Childrens’ Hospital, Houston, TX 77030, USA
| | - Patricia M. Sánchez Carballo
- Clinical Infectious Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Borstel-Hamburg-Lübeck-Riems, 23845 Borstel, Germany
- Respiratory Medicine & International Health, University of Lübeck, 23562 Lübeck, Germany
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5
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Zhang Y, Deng Q, Tang C, Zhang M, Huang Z, Cai Z. Fluorescent folic acid-capped copper nanoclusters for the determination of rifampicin based on inner filter effect. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:121944. [PMID: 36228492 DOI: 10.1016/j.saa.2022.121944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/28/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Development of excellent sensors to determine trace concentrations of rifampicin is of intense importance for medicine analysis and human health. Herein, a facile and green fluorescent probe was established for the determination of rifampicin by using folic acid protected copper nanoclusters (FA-Cu NCs). Many characterization methods were applied for the analysis of the as-prepared FA-Cu NCs including UV-visible absorption spectra, fluorescence spectra, Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), fluorescence lifetime and X-ray photoelectron spectroscopy (XPS). The TEM image suggested that the as-prepared FA-Cu NCs were highly dispersed. The as-synthesized FA-Cu NCs emerged blue fluorescence under UV light and demonstrated maximum emission wavelength at 446 nm under the maximum excitation wavelength of 358 nm. After the addition of rifampicin, the FL intensities of FA-Cu NCs were uncommonly quenched. The related experimental data intimated that the quenching mechanisms were assumed to the inner filter effect (IFE) and static quenching. The as-proposed probe platform displayed an obvious linear relationship with rifampicin concentrations varying from 0.5 to 100 µM, and the corresponding detection limit (LOD) was 0.073 µM (S/N = 3). Finally, the as-established detection platform was successfully employed to analyze trace concentrations of rifampicin in real samples.
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Affiliation(s)
- Yi Zhang
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, Hubei Province, PR China.
| | - Qingbo Deng
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, Hubei Province, PR China
| | - Chang Tang
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, Hubei Province, PR China
| | - Minglu Zhang
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, Hubei Province, PR China
| | - Zilong Huang
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, Hubei Province, PR China
| | - Zhifeng Cai
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, PR China.
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6
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Zhang Q, Ma S, Zhuo X, Wang C, Wang H, Xing Y, Xue Q, Zhang K. An ultrasensitive electrochemical sensing platform based on silver nanoparticle-anchored 3D reduced graphene oxide for rifampicin detection. Analyst 2022; 147:2156-2163. [PMID: 35438693 DOI: 10.1039/d2an00452f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile strategy has been reported to anchor silver nanoparticles (Ag NPs) onto three-dimensional reduced graphene oxide (3D rGO) via a green and simple method. An accurate and reliable electrochemical sensing platform based on Ag NPs/3D rGO was designed for the ultrasensitive detection of rifampicin (RIF). The morphology and features of Ag NPs/3D rGO were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), Raman spectroscopy and electrochemical measurements. The interface of the modified electrode presented effective electrical activity for the analysis of RIF due to the large electrochemically active surface area and excellent electron transport ability. The sensor exhibited a good linear relationship in the range of 0.01 nM-45 μM and a low detection limit of 0.810 nM (S/N = 3). Crucially, the fabricated Ag NPs/3D rGO sensor was successfully utilized to assess RIF in human blood, drug and aquatic product samples. This sensing platform exhibited outstanding electrochemical performance for RIF detection and showed great potential application in clinical diagnosis, pharmaceutical and food-related fields.
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Affiliation(s)
- Qing Zhang
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, China. .,School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234000, China.,State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Shangshang Ma
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, China. .,School of Chemical Engineering, China University of Mining and Technology, Xuzhou, 221100, China
| | - Xin Zhuo
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234000, China
| | - Cong Wang
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234000, China
| | - Hongyan Wang
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234000, China
| | - Yuying Xing
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234000, China
| | - Qingyuan Xue
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234000, China
| | - Keying Zhang
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, China. .,School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234000, China.,State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
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7
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van Ewijk-Beneken Kolmer EWJ, Teulen MJA, Boosman RJ, de Rouw N, Burgers JA, Ter Heine R. Highly sensitive quantification of pemetrexed in human plasma using UPLC-MS/MS to support microdosing studies. Biomed Chromatogr 2021; 36:e5277. [PMID: 34741344 PMCID: PMC9285051 DOI: 10.1002/bmc.5277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/05/2021] [Accepted: 10/27/2021] [Indexed: 11/09/2022]
Abstract
Pemetrexed is an antifolate drug approved for the treatment of non-small-cell lung cancer and mesothelioma. Assessing pemetrexed pharmacokinetics after administration of a microdose (100 μg) may facilitate drug-drug interaction and dose individualization studies with cytotoxic drugs, without causing harm to patients. Therefore, a highly sensitive bioanalytical assay is required. A reversed-phase ultra-high performance liquid chromatography method was developed to determine pemetrexed concentrations in human ethylenediaminetetraacetic acid-plasma after microdosing. [13 C5 ]-Pemetrexed was used as the internal standard. The sample preparation involved solid-phase extraction from plasma. Detection was performed using MS/MS in a total run time of 9.5 min. The assay was validated over the concentration range of 0.0250-25.0 μg/L pemetrexed. The average accuracies for the assay in plasma were 96.5 and 96.5%, and the within-day and between-day precision in coefficients of variations was <8.8%. Extraction recovery was 59 ± 1 and 55 ± 5% for pemetrexed and its internal standard. Processed plasma samples were stable for 2 days in a cooled autosampler at 10°C. The assay was successfully applied in a pharmacokinetic curve, which was obtained as a part of an ongoing clinical microdosing study.
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Affiliation(s)
| | - Marga J A Teulen
- Department of Pharmacy and Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Rene J Boosman
- Department of Pharmacy and Pharmacology, Antoni van Leeuwenhoek-The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Nikki de Rouw
- Department of Pharmacy and Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Pharmacy, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands
| | - Jacobus A Burgers
- Department of Pharmacy and Pharmacology, Antoni van Leeuwenhoek-The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Rob Ter Heine
- Department of Pharmacy and Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
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8
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Affiliation(s)
- H Simon Schaaf
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa, .,Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.,Department of Infectious Diseases, Imperial College London, London, UK
| | - James A Seddon
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa, .,Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.,Department of Infectious Diseases, Imperial College London, London, UK
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9
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Kotadiya RM, Patel FN. Analytical Methods Practiced to Quantitation of Rifampicin: A Captious Survey. CURR PHARM ANAL 2021. [DOI: 10.2174/1573412916999200704144231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:Rifampicin (RIF), also known as rifampin, a bactericidal antibiotic having
broad antibacterial activity against various gram-positive and gram-negative bacteria acts by inhibiting
DNA dependent RNA polymerase. RIF has been administered in different dosage forms like tablets,
capsules, injections, oral suspension, powder, etc. for the treatment of several types of bacterial infections,
including tuberculosis, Mycobacterium avium complex, leprosy and Legionnaires’ disease.
Introduction: To ensure the quality, efficacy, safety and effectiveness of RIF drug product, effective
and reliable analytical methods are of utmost importance. To quantify RIF for quality control or pharmacokinetic
purposes, alternative analytical methods have been developed along with the official compendial
methods.
Methods:In this review paper, an extensive literature survey was conducted to gather information on
various analytical instrumental methods used so far for RIF.
Results:These methods were high-performance liquid chromatography (42%), hyphenated techniques
(18%), spectroscopy (15%), high-performance thin-layer chromatography or thin-layer chromatography
(7%) and miscellaneous (18%).
Conclusion:All these methods were selective and specific for the RIF analysis.
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Affiliation(s)
- Rajendra Muljibhai Kotadiya
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, Changa, Dist. Anand, Gujarat,India
| | - Foram Narottambhai Patel
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, Changa, Dist. Anand, Gujarat,India
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Vinothkumar V, Sangili A, Chen SM, Abinaya M. Additive-free synthesis of BiVO4 microspheres as an electrochemical sensor for determination of antituberculosis drug rifampicin. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126849] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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First Screen-Printed Sensor (Electrochemically Activated Screen-Printed Boron-Doped Diamond Electrode) for Quantitative Determination of Rifampicin by Adsorptive Stripping Voltammetry. MATERIALS 2021; 14:ma14154231. [PMID: 34361425 PMCID: PMC8347414 DOI: 10.3390/ma14154231] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 01/28/2023]
Abstract
In this paper, a screen-printed boron-doped electrode (aSPBDDE) was subjected to electrochemical activation by cyclic voltammetry (CV) in 0.1 M NaOH and the response to rifampicin (RIF) oxidation was used as a testing probe. Changes in surface morphology and electrochemical behaviour of RIF before and after the electrochemical activation of SPBDDE were studied by scanning electron microscopy (SEM), CV and electrochemical impedance spectroscopy (EIS). The increase in number and size of pores in the modifier layer and reduction of charge transfer residence were likely responsible for electrochemical improvement of the analytical signal from RIF at the SPBDDE. Quantitative analysis of RIF by using differential pulse adsorptive stripping voltammetry in 0.1 mol L−1 solution of PBS of pH 3.0 ± 0.1 at the aSPBDDE was carried out. Using optimized conditions (Eacc of −0.45 V, tacc of 120 s, ΔEA of 150 mV, ν of 100 mV s−1 and tm of 5 ms), the RIF peak current increased linearly with the concentration in the four ranges: 0.002–0.02, 0.02–0.2, 0.2–2.0, and 2.0–20.0 nM. The limits of detection and quantification were calculated at 0.22 and 0.73 pM. The aSPBDDE showed satisfactory repeatability, reproducibility, and selectivity towards potential interferences. The applicability of the aSPBDDE for control analysis of RIF was demonstrated using river water samples and certified reference material of bovine urine.
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12
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Te Brake LHM, de Jager V, Narunsky K, Vanker N, Svensson EM, Phillips PPJ, Gillespie SH, Heinrich N, Hoelscher M, Dawson R, Diacon AH, Aarnoutse RE, Boeree MJ. Increased bactericidal activity but dose-limiting intolerability at 50 mg·kg -1 rifampicin. Eur Respir J 2021; 58:13993003.00955-2020. [PMID: 33542056 PMCID: PMC8411896 DOI: 10.1183/13993003.00955-2020] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 12/07/2020] [Indexed: 01/16/2023]
Abstract
Background Accumulating data indicate that higher rifampicin doses are more effective and shorten tuberculosis (TB) treatment duration. This study evaluated the safety, tolerability, pharmacokinetics, and 7- and 14-day early bactericidal activity (EBA) of increasing doses of rifampicin. Here we report the results of the final cohorts of PanACEA HIGHRIF1, a dose escalation study in treatment-naive adult smear-positive patients with TB. Methods Patients received, in consecutive cohorts, 40 or 50 mg·kg−1 rifampicin once daily in monotherapy (day 1–7), supplemented with standard dose isoniazid, pyrazinamide and ethambutol between days 8 and 14. Results In the 40 mg·kg−1 cohort (n=15), 13 patients experienced a total of 36 adverse events during monotherapy, resulting in one treatment discontinuation. In the 50 mg·kg−1 cohort (n=17), all patients experienced adverse events during monotherapy, 93 in total; 11 patients withdrew or stopped study medication. Adverse events were mostly mild/moderate and tolerability rather than safety related, i.e. gastrointestinal disorders, pruritis, hyperbilirubinaemia and jaundice. There was a more than proportional increase in the rifampicin geometric mean area under the plasma concentration–time curve from time 0 to 12 h (AUC0–24 h) for 50 mg·kg−1 compared with 40 mg·kg−1; 571 (range 320–995) versus 387 (range 201–847) mg·L−1·h, while peak exposures saw proportional increases. Protein-unbound exposure after 50 mg·kg−1 (11% (range 8–17%)) was comparable with lower rifampicin doses. Rifampicin exposures and bilirubin concentrations were correlated (Spearman's ρ=0.670 on day 3, p<0.001). EBA increased considerably with dose, with the highest seen after 50 mg·kg−1: 14-day EBA −0.427 (95% CI −0.500– −0.355) log10CFU·mL−1·day−1. Conclusion Although associated with an increased bactericidal effect, the 50 mg·kg−1 dose was not well tolerated. Rifampicin at 40 mg·kg−1 was well tolerated and therefore selected for evaluation in a phase IIc treatment-shortening trial. While bactericidal activity continues to increase with dose, for the first time we identified dose-limiting intolerability for rifampicin dosed at 50 mg·kg−1; 40 mg·kg−1 seems the optimal tolerable dose for evaluation in TB treatment-shortening trialshttps://bit.ly/37dUIuB
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Affiliation(s)
- Lindsey H M Te Brake
- Dept of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Kim Narunsky
- UCT Lung Institute, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | | | - Elin M Svensson
- Dept of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.,Dept of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
| | - Patrick P J Phillips
- UCSF Center for Tuberculosis, University of California San Francisco, San Francisco, CA, USA
| | - Stephen H Gillespie
- School of Medicine, Medical and Biological Sciences, University of St Andrews, St Andrews, UK
| | - Norbert Heinrich
- Division of Infectious Diseases and Tropical Medicine, Medical Center of the University of Munich, Munich, Germany.,German Center for Infection Research (DZIF), Munich, Germany
| | - Michael Hoelscher
- Division of Infectious Diseases and Tropical Medicine, Medical Center of the University of Munich, Munich, Germany.,German Center for Infection Research (DZIF), Munich, Germany
| | - Rodney Dawson
- UCT Lung Institute, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | | | - Rob E Aarnoutse
- Dept of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
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13
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Dong WC, Guo JL, Wu XK, Zhao MQ, Li HR, Zhang ZQ, Jiang Y. Relationship Between the Free and Total Methotrexate Plasma Concentration in Children and Application to Predict the Toxicity of HD-MTX. Front Pharmacol 2021; 12:636975. [PMID: 33995039 PMCID: PMC8118665 DOI: 10.3389/fphar.2021.636975] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/09/2021] [Indexed: 11/16/2022] Open
Abstract
High-dose methotrexate (HD-MTX) can be highly effective as well as extremely toxic. Many drug molecules can bind to plasma proteins to different extents in vivo, whereas only the free drug can reach the site of action to exert a pharmacological effect and cause toxicity. However, free MTX concentrations in plasma have not been reported. Traditional analyses of free drugs are both cumbersome and inaccurate. We collected 92 plasma samples from 52 children diagnosed with ALL or NHL or other lymphomas that were treated with HD-MTX. The hollow fiber centrifugal ultrafiltration (HFCF-UF) was used to prepare plasma samples for analysis of the free MTX concentration. Protein precipitation was employed to measure the total MTX concentration. The HFCF-UF is a simple method involving a step of ordinary centrifugation; the validation parameters for the methodological results were satisfactory and fell within the acceptance criteria. A linearity coefficient r2 of 0.910 was obtained for the correlation between the free and total MTX plasma concentrations in 92 plasma samples. However, the free and total MTX concentrations was only weakly correlated in 16 clinical plasma specimens with total MTX concentrations >2 μmol L−1 (r2 = 0.760). Both the free and total MTX concentrations at 42 h were negatively correlated with the creatinine clearance (CCr) level (P = 0.023, r = −0.236 for total MTX and P = 0.020, r = −0.241for free MTX, respectively). The free MTX concentration could not be accurately estimated from the total MTX concentration for patients with high MTX levels which are conditions under which toxic reactions are more likely to occur. High plasma MTX levels could become a predictor of the occurrence of MTX nephrotoxicity to draw people's attention. The proposed HFCF-UF method is a simple and accurate way to evaluate efficacy and toxicity in clinical therapeutic drug monitoring.
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Affiliation(s)
- Wei-Chong Dong
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, China.,Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jia-Liang Guo
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xi-Kun Wu
- Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Meng-Qiang Zhao
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, China
| | - Hao-Ran Li
- Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhi-Qing Zhang
- Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ye Jiang
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, China
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14
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Blidar A, Trashin S, Carrión EN, Gorun SM, Cristea C, De Wael K. Enhanced Photoelectrochemical Detection of an Analyte Triggered by Its Concentration by a Singlet Oxygen-Generating Fluoro Photosensitizer. ACS Sens 2020; 5:3501-3509. [PMID: 33118815 DOI: 10.1021/acssensors.0c01609] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The use of a photocatalyst (photosensitizer) which produces singlet oxygen instead of enzymes for oxidizing analytes creates opportunities for designing cost-efficient and sensitive photoelectrochemical sensors. We report that perfluoroisopropyl-substituted zinc phthalocyanine (F64PcZn) interacts specifically with a complex phenolic compound, the antibiotic rifampicin (RIF), but not with hydroquinone or another complex phenolic compound, the antibiotic doxycycline. The specificity is imparted by the selective preconcentration of RIF in the photocatalytic layer, as revealed by electrochemical and optical measurements, complemented by molecular modeling that confirms the important role of a hydrophobic cavity formed by the iso-perfluoropropyl groups of the photocatalyst. The preconcentration effect favorably enhances the RIF photoelectrochemical detection limit as well as sensitivity to nanomolar (ppb) concentrations, LOD = 7 nM (6 ppb) and 2.8 A·M-1·cm-2, respectively. The selectivity to RIF, retained in the photosensitizer layer, is further enhanced by the selective removal of all unretained phenols via simple washing of the electrodes with pure buffer. The utility of the sensor for analyzing municipal wastewater was demonstrated. This first demonstration of enhanced selectivity and sensitivity due to intrinsic interactions of a molecular photocatalyst (photosensitizer) with an analyte, without use of a biorecognition element, may allow the design of related, robust, simple, and viable sensors.
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Affiliation(s)
- Adrian Blidar
- Department of Analytical Chemistry, “Iuliu Hatieganu” University of Medicine and Pharmacy, 4 Pasteur Street, 400349 Cluj-Napoca, Romania
| | | | - Erik N. Carrión
- Department of Chemistry and Biochemistry and the Center for Functional Materials, Seton Hall University, South Orange, New Jersey 07079, United States
| | - Sergiu M. Gorun
- Department of Chemistry and Biochemistry and the Center for Functional Materials, Seton Hall University, South Orange, New Jersey 07079, United States
| | - Cecilia Cristea
- Department of Analytical Chemistry, “Iuliu Hatieganu” University of Medicine and Pharmacy, 4 Pasteur Street, 400349 Cluj-Napoca, Romania
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15
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Wu XM, Zhang JH, Feng ZS, Chen WX, Zhang F, Li Y. An ultra-sensitive "turn-off" fluorescent sensor for the trace detection of rifampicin based on glutathione-stabilized copper nanoclusters. Analyst 2020; 145:1227-1235. [PMID: 31898707 DOI: 10.1039/c9an01994d] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Rifampicin is a common antibiotic used in human and veterinary medicine to treat tuberculosis and other diseases caused by numerous pathogenic bacteria. However, the excessive or improper use of rifampicin usually leads to a series of problems, including bacterial resistance, excessive drug-resistance and water pollution. Thus, it is of great importance to develop selective and sensitive assays for monitoring rifampicin in biological systems. In this study, we designed a fluorescence "turn-off" strategy for the trace detection of rifampicin based on a glutathione-stabilized copper nanoclusters (GSH-Cu NC) sensor. In an aqueous solution, the fluorescence of the GSH-Cu NCs at 632 nm can be quenched effectively and selectively by rifampicin due to the inner-filter effect (IFE) of fluorescence mechanism. Distinctively, this GSH-Cu NC sensor exhibited excellent fluorescence sensing capability for the trace detection of rifampicin with a very low limit of detection (LOD) of 16 pM in a wide linear range from 50 to 10 000 pM. It is not only more sensitive than the other methods previously reported for the detection of rifampicin, but also has an outstanding selectivity and strong anti-interference in complex samples. Furthermore, the as-developed GSH-Cu NCs were also successfully applied to determine rifampicin in different real samples with quantitative spike recoveries ranging from 97% to 105%.
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Affiliation(s)
- Xiao-Man Wu
- Tianjin Key laboratory of Structure and Performance for Functional Molecules, MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, College of Chemistry, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, PR China.
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16
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Hao K, Suryoprabowo S, Song S, Kuang H, Liu L. Rapid detection of rifampicin in fish using immunochromatographic strips. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1753017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Kai Hao
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, People’s Republic of China
| | - Steven Suryoprabowo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Shanshan Song
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Liqiang Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
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17
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Litjens CHC, Aarnoutse RE, van Ewijk-Beneken Kolmer EWJ, Svensson EM, Colbers A, Burger DM, Boeree MJ, Te Brake LHM. Protein binding of rifampicin is not saturated when using high-dose rifampicin. J Antimicrob Chemother 2020; 74:986-990. [PMID: 30597025 DOI: 10.1093/jac/dky527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/30/2018] [Accepted: 11/21/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Higher doses of rifampicin are being investigated as a means to optimize response to this pivotal TB drug. It is unknown whether high-dose rifampicin results in saturation of plasma protein binding and a relative increase in protein-unbound (active) drug concentrations. OBJECTIVES To assess the free fraction of rifampicin based on an in vitro experiment and data from a clinical trial on high-dose rifampicin. METHODS Protein-unbound rifampicin concentrations were measured in human serum spiked with increasing total concentrations (up to 64 mg/L) of rifampicin and in samples obtained by intensive pharmacokinetic sampling of patients who used standard (10 mg/kg daily) or high-dose (35 mg/kg) rifampicin up to steady-state. The performance of total AUC0-24 to predict unbound AUC0-24 was evaluated. RESULTS The in vitro free fraction of rifampicin remained unaltered (∼9%) up to 21 mg/L and increased up to 13% at 41 mg/L and 17% at 64 mg/L rifampicin. The highest (peak) concentration in vivo was 39.1 mg/L (high-dose group). The arithmetic mean percentage unbound to total AUC0-24in vivo was 13.3% (range = 8.1%-24.9%) and 11.1% (range = 8.6%-13.6%) for the standard group and the high-dose group, respectively (P = 0.214). Prediction of unbound AUC0-24 based on total AUC0-24 resulted in a bias of -0.05% and an imprecision of 13.2%. CONCLUSIONS Plasma protein binding of rifampicin can become saturated, but exposures after high-dose rifampicin are not high enough to increase the free fraction in TB patients with normal albumin values. Unbound rifampicin exposures can be predicted from total exposures, even in the higher dose range.
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Affiliation(s)
- Carlijn H C Litjens
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands.,Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Rob E Aarnoutse
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | | | - Elin M Svensson
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands.,Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
| | - Angela Colbers
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - David M Burger
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Martin J Boeree
- Department of Pulmonary Diseases, Radboud university medical center, Nijmegen, The Netherlands
| | - Lindsey H M Te Brake
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
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18
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Castro TNE, Costa ER, Gonçalves JCS, Estrela RDCE. Pretreatment and non-specific binding in ultrafiltration device: Impact on protease inhibitor quantification. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1146:122127. [PMID: 32371328 DOI: 10.1016/j.jchromb.2020.122127] [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: 10/16/2019] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Ultrafiltration (UF) is used to separate unbound drugs; however, non-specific binding (NSB) may be a limiting factor of this technique. Pretreatment of UF devices has been suggested to reduce NSB. Therefore, the pretreatment methodologies for UF devices were evaluated in order to test their effectiveness in reducing NSB of protease inhibitors (PIs). METHODOLOGY Two PIs (lopinavir-LPV and ritonavir-RTV) were tested. UF devices were pretreated with ultrapure water, Tween-20 or Tween-80. To evaluate the NSB, after UF devices being pretreated, ultrafiltrate solutions containing the analytes at two concentrations (low and high) were used. Samples were quantified by LC-MS/MS. RESULTS UF devices pretreated with Tween-5% had the lowest NSB for both analytes. NSB values varied between 7 and 11% at low concentration 16-34% at high LPV concentration, respectively. For RTV, NSB was approximately 6% for low concentration and 18% for high concentration. Failure to completely remove Tween in UF devices could results in an overestimation of NSB. CONCLUSION Pretreatment of UF device with Tween and subsequent removal proved to be effective in reducing NSB of PI.
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Affiliation(s)
- Thales Nascimento E Castro
- Programa de Pós-Graduação em Saúde Pública e Meio Ambiente, Escola Nacional de Saúde Pública Sergio Arouca, FIOCRUZ, Rio de Janeiro, RJ, Brazil; Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Edlaine Rijo Costa
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Rita de Cassia Elias Estrela
- Programa de Pós-Graduação em Saúde Pública e Meio Ambiente, Escola Nacional de Saúde Pública Sergio Arouca, FIOCRUZ, Rio de Janeiro, RJ, Brazil; Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro, RJ, Brazil.
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Chen TW, Sivasamy Vasantha A, Chen SM, Al Farraj DA, Soliman Elshikh M, Alkufeidy RM, Al Khulaifi MM. Sonochemical synthesis and fabrication of honeycomb like zirconium dioxide with chitosan modified electrode for sensitive electrochemical determination of anti-tuberculosis (TB) drug. ULTRASONICS SONOCHEMISTRY 2019; 59:104718. [PMID: 31442770 DOI: 10.1016/j.ultsonch.2019.104718] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/26/2019] [Accepted: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Herein, novel honeycomb like zirconium dioxide with chitosan (ZrO2@chitosan) nanocomposite have been designed through a facile ultrasound-assisted method and followed by a simple sonication process (bath-type ultrasound washer; Honda Electronics-W-118T; 100 W/cm2 and 300 kHz frequency). After then, as-synthesized ZrO2@chitosan was characterized by FESEM, XRD and EIS. The ZrO2@chitosan nanocomposite modified glassy carbon electrode shows excellent electrochemical sensing performance towards anti-tuberculosis drug (rifampicin). Furthermore, the ZrO2@chitosan modified and fabricated electrochemical sensor showed a wide linear range between 0.015 µM and 547.4 µM and nanomolar detection limit (7.5 nM). Moreover, the ZrO2@chitosan modified electrode showed selectivity towards the detection of anti-tuberculosis drug (rifampicin). The ZrO2@chitosan nanocomposite film modified non-enzymatic sensor has high stable and good reproducible towards the detection of rifampicin. In addition, the as-synthesized ZrO2@chitosan nanocomposite modified electrode has been applied to the determination of rifampicin in biological samples such as human serum and urine samples.
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Affiliation(s)
- Tse-Wei Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Airathevar Sivasamy Vasantha
- Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamilnadu, India
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Dunia A Al Farraj
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Mohamed Soliman Elshikh
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Roua M Alkufeidy
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Manal M Al Khulaifi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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