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Febrianti NQ, Tunggeng MGR, Ramadhany ID, Asri RM, Djabir YY, Permana AD. Validation of UV-Vis spectrophotometric and colorimetric methods to quantify methotrexate in plasma and rat skin tissue: Application to in vitro release, ex vivo and in vivo studies from dissolving microarray patch loaded pH-sensitive nanoparticle. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 315:124258. [PMID: 38599025 DOI: 10.1016/j.saa.2024.124258] [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: 08/29/2023] [Revised: 01/26/2024] [Accepted: 04/06/2024] [Indexed: 04/12/2024]
Abstract
This research transformed MTX into smart nanoparticles that respond to the acidic conditions present in inflammation. These nanoparticles were then incorporated into a patch that dissolves over time, aiding their penetration. A method using UV-Vis spectrophotometry was validated to support the development of this new delivery system. This method was used to measure the quantity of MTX in the prepared patches in various scenarios: in laboratory solutions with pH 7.4 and pH 5.0, in skin tissue, and plasma. This validation was conducted in laboratory studies, tissue samples, and live subjects, adhering to established guidelines. The resulting calibration curve displayed a linear relationship (correlation coefficient 0.999) across these scenarios. The lowest quantity of MTX that could be accurately detected was 0.6 µg/mL in pH 7.4 solutions, 1.46 µg/mL in pH 5.0 solutions, 1.11 µg/mL in skin tissue, and 1.48 µg/mL in plasma. This validated method exhibited precision and accuracy and was not influenced by dilution effects. The method was effectively used to measure MTX levels in the developed patch in controlled lab settings and biological systems (in vitro, ex vivo, and in vivo). This showed consistent drug content in the patches, controlled release patterns over 24 h, and pharmacokinetic profiles spanning 48 h. However, additional analytical approaches were necessary for quantifying MTX in studies focused on the drug's effects on the body's functions.
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Affiliation(s)
| | | | | | | | | | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia.
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2
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Febrianti NQ, Aziz AYR, Tunggeng MGR, Ramadhany ID, Syafika N, Azis SBA, Djabir YY, Asri RM, Permana AD. Development of pH-Sensitive Nanoparticle Incorporated into Dissolving Microarray Patch for Selective Delivery of Methotrexate. AAPS PharmSciTech 2024; 25:70. [PMID: 38538953 DOI: 10.1208/s12249-024-02777-y] [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: 10/28/2023] [Accepted: 02/22/2024] [Indexed: 04/24/2024] Open
Abstract
PURPOSE Rheumatoid arthritis (RA) is a systemic autoimmune disease that attacks human joints. Methotrexate (MTX), as one the most effective medications to treat RA, has limitations when administered either orally or by injection. To overcome this limitation, we formulated MTX through a smart nanoparticle (SNP) combined with dissolving microarray patch (DMAP) to achieve selective-targeted delivery of RA. METHODS SNP was made using the combination of polyethylene glycol (PEG) and polycaprolactone (PCL) polymers, while DMAP was made using the combination of hyaluronic acid and polyvinylpyrrolidone K-30. SNP-DMAP was then evaluated for its mechanical and chemical characteristics, ex vivo permeation test, in vivo pharmacokinetic study, hemolysis, and hen's egg test-chorioallantoic membrane (HET-CAM) test. RESULT The results showed that the characteristics of the SNP-DMAP-MTX formulas meet the requirements for transdermal delivery, with the particle size of 189.09 ±12.30 nm and absorption efficiency of 65.40 ± 5.0%. The hemolysis and HET-CAM testing indicate that this formula was non-toxic and non-irritating. Ex vivo permeation shows a concentration of 51.50 ± 3.20 µg/mL of SNP-DMAP-MTX in PBS pH 5.0. The pharmacokinetic profile of SNP-DMAP-MTX showed selectivity and sustained release compared with oral and DMAP-MTX with values of t1/2 (4.88 ± 0 h), Tmax (8 ± 0 h), Cmax (0.50 ± 0.04 μg/mL), AUC (3.15 ± 0.54 μg/mL.h), and mean residence time (MRT) (9.13 ± 0 h). CONCLUSION The developed SNP-DMAP-MTX has been proven to deliver MTX transdermal and selectively at the RA site, potentially avoiding conventional MTX side effects and enhancing the effectiveness of RA therapy.
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Affiliation(s)
| | | | | | | | - Nur Syafika
- Faculty of Pharmacy, Hasanuddin University, Makassar, 90245, Indonesia
| | | | | | | | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar, 90245, Indonesia.
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Wang Y, Li S, Gao Y, Du B, Vafaei S, Li M, Wu H, Tong X, Chen Y. Synthesis of poly (L-cysteine)/g-C 3N 4 modified glassy carbon electrodes for electrochemical detection of methotrexate as a medicine for treatment of breast cancer in pharmaceutical fluid samples. CHEMOSPHERE 2023; 331:138769. [PMID: 37100252 DOI: 10.1016/j.chemosphere.2023.138769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/10/2023] [Accepted: 04/21/2023] [Indexed: 05/19/2023]
Abstract
Analyzing the levels of anticancer medications in biological samples and body fluids reveals important details on the course and effects of chemotherapy. p (L-Cys)/graphitic-carbon nitride (g-C3N4)/GCE, a modified glassy carbon electrode, was created for the current study's electrochemical detection of methotrexate (MTX), a drug used to treat breast cancer, in pharmaceutical fluid samples. l-Cysteine was electro-polymerized on the surface of the g-C3N4/GCE after the g-C3N4 was first modified to prepare the p (L-Cys)/g-C3N4/GCE. Analyses of morphology and structure showed that well-crystalline p (L-Cys) on g-C3N4/GCE was successfully electropolymerized. Studying the electrochemical characteristics of p (L-Cys)/g-C3N4/GCE using CV and DPV techniques revealed a synergistic impact between g-C3N4 and l-cysteine that improved the stability and selectivity of the electrochemical oxidation of MTX while enhancing the electrochemical signal. Results showed that 7.5-780 μM was the linear range, and that 0.11841 μA/μM and 6 nM, respectively, were the sensitivity and limit of detection. The applicability of the suggested sensors was assessed using real pharmaceutical preparations, and the results showed that p (L-Cys)/g-C3N4/GCE had a high degree of precision. Five breast cancer patients who volunteered and provided prepared blood serum samples between the ages of 35 and 50 were used to examine the validity and accuracy of the proposed sensor in the current work for the determination of MTX. The results showed good recovery values (greater than 97.20%), appropriate accuracy (RSD less than 5.11%), and good agreement between the ELISA and DPV analysis results. These findings showed that p (L-Cys)/g-C3N4/GCE can be applied as a trustworthy MTX sensor for MTX level monitoring in blood samples and pharmaceutical samples.
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Affiliation(s)
- Yanzhong Wang
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou, Zhejiang, 310016, China
| | - Shuangshuang Li
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, 58 Shangtang Road, Hangzhou, Zhejiang, 310014, China
| | - Yuzhen Gao
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou, Zhejiang, 310016, China
| | - Bo Du
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China
| | - Somayeh Vafaei
- Department of Molecular Medicine, Faculty of Advance Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Manning Li
- Cancer Center, Department of Hematology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, 58 Shangtang Road, Hangzhou, Zhejiang, 310014, China
| | - Han Wu
- Cancer Center, Department of Hematology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, 58 Shangtang Road, Hangzhou, Zhejiang, 310014, China
| | - Xiangmin Tong
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, 58 Shangtang Road, Hangzhou, Zhejiang, 310014, China; Cancer Center, Department of Hematology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, 58 Shangtang Road, Hangzhou, Zhejiang, 310014, China.
| | - Yirui Chen
- Cancer Center, Department of Hematology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, 58 Shangtang Road, Hangzhou, Zhejiang, 310014, China.
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Magnetic Molecularly Imprinted Polymers for the Rapid and Selective Extraction and Detection of Methotrexatein Serum by HPLC-UV Analysis. Molecules 2022; 27:molecules27186084. [PMID: 36144817 PMCID: PMC9505160 DOI: 10.3390/molecules27186084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/03/2022] [Accepted: 09/10/2022] [Indexed: 11/17/2022] Open
Abstract
In this work, novel selective recognition materials, namely magnetic molecularly imprinted polymers (MMIPs), were prepared. The recognition materials were used as pretreatment materials for magnetic molecularly imprinted solid-phase extraction (MSPE) to achieve the efficient adsorption, selective recognition, and rapid magnetic separation of methotrexate (MTX) in the patients' plasma. This method was combined with high-performance liquid chromatography-ultraviolet detection (HPLC-UV) to achieve accurate and rapid detection of the plasma MTX concentration, providing a new method for the clinical detection and monitoring of the MTX concentration. The MMIPs for the selective adsorption of MTX were prepared by the sol-gel method. The materials were characterized by transmission electron microscopy, Fourier transform-infrared spectrometry, X-ray diffractometry, and X-ray photoelectron spectrometry. The MTX adsorption properties of the MMIPs were evaluated using static, dynamic, and selective adsorption experiments. On this basis, the extraction conditions were optimized systematically. The adsorption capacity of MMIPs for MTX was 39.56 mgg-1, the imprinting factor was 9.40, and the adsorption equilibrium time was 60 min. The optimal extraction conditions were as follows: the amount of MMIP was 100 mg, the loading time was 120 min, the leachate was 8:2 (v/v) water-methanol, the eluent was 4:1 (v/v) methanol-acetic acid, and the elution time was 60 min. MTX was linear in the range of 0.00005-0.25 mg mL-1, and the detection limit was 12.51 ng mL-1. The accuracy of the MSPE-HPLC-UV method for MTX detection was excellent, and the result was consistent with that of a drug concentration analyzer.
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Tajik S, Beitollahi H, Shahsavari S, Nejad FG. Simultaneous and selective electrochemical sensing of methotrexate and folic acid in biological fluids and pharmaceutical samples using Fe 3O 4/ppy/Pd nanocomposite modified screen printed graphite electrode. CHEMOSPHERE 2022; 291:132736. [PMID: 34728224 DOI: 10.1016/j.chemosphere.2021.132736] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/23/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
The purpose of this study was to fabricate an electrochemical sensor for the detection of methotrexate and folic acid based on a screen-printed graphite electrode (SPGE) modified with prepared iron oxide (Fe3O4)/polypyrrole (ppy)/Palladium (Pd) nanocomposite. Transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FT-IR) techniques were employed to characterize the Fe3O4/ppy/Pd nanocomposite. The produced modifier was used to induce a remarkable electrocatalytic impact relative to the oxidation of methotrexate, which caused the potential peak shift to a less positive amount (from 800 mV to about 500 mV) and improved the peak current (from 5.3 μA to about 16 μA). Methotrexate peak current was linearly dependent on its concentration from 0.03100.0 μM and the limit of detection (LOD) was estimated at 7.0 nM. The methotrexate and folic acid were co-detected by the proposed sensor. The experimental results indicated that the oxidation peaks of methotrexate and folic acid were separated about 200 mV in phosphate buffer solution (PBS) at pH 7.0. Fe3O4/ppy/Pd/SPGE was successfully able to detect methotrexate and folic acid in pharmaceutical and biological samples with excellent recovery.
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Affiliation(s)
- Somayeh Tajik
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran.
| | - Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
| | - Saeed Shahsavari
- Leishmaniasis Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Fariba Garkani Nejad
- Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran
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Mutharani B, Ranganathan P, Chen SM, Sireesha P. Ultrasound-induced radicals initiated the formation of inorganic-organic Pr 2O 3/polystyrene hybrid composite for electro-oxidative determination of chemotherapeutic drug methotrexate. ULTRASONICS SONOCHEMISTRY 2019; 56:410-421. [PMID: 31101279 DOI: 10.1016/j.ultsonch.2019.04.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/18/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
To dates, the facile synthesis of inorganic-coated organic polymer composite has received greater attention in the order of research fields including advanced materials and electrochemical analysis owing to the complementary or synergistic effects. In this context, Pr2O3 and Pr2O3 coated polystyrene (Pr2O3/PS) inorganic-organic colloidal composite were prepared via ultrasound-induced radicals initiated precipitation and dispersion polymerization methods. The synthesized Pr2O3/PS composite was systematically studied by FE-SEM, TEM, EDX, FT-IR, XRD, and XPS analysis. This composite modified glassy carbon electrode (Pr2O3/PS GCE) was utilized to construct a novel electrochemical sensor for the detection assay of chemotherapy agent methotrexate (MTA). Under optimal condition, the designed sensor showed outstanding performance for MTA trace level detection over the linear concentration range of 0.01-236 µM with a detection limit of 0.8 nM for MTA. Furthermore, the prepared sensor accomplished excellent stability and relevant reproducibility, in addition to reliable practical assay in real human blood serum and urine samples. Besides, the possible MTA sensing mechanism of Pr2O3/PS GCE has been deliberated in detail. Our finding suggested that the developed Pr2O3/PS composite might be a favorable material for the fabrication of the high-performance electrochemical sensor.
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Affiliation(s)
- Bhuvanenthiran Mutharani
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Palraj Ranganathan
- Institute of Organic and Polymeric Materials and Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei, Taiwan, ROC
| | - 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, ROC.
| | - Pedaballi Sireesha
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC
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7
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Zhou H, Ran G, Masson JF, Wang C, Zhao Y, Song Q. Novel tungsten phosphide embedded nitrogen-doped carbon nanotubes: A portable and renewable monitoring platform for anticancer drug in whole blood. Biosens Bioelectron 2018; 105:226-235. [PMID: 29412947 DOI: 10.1016/j.bios.2018.01.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/31/2017] [Accepted: 01/21/2018] [Indexed: 11/24/2022]
Abstract
Biosensors based on converting the concentration of analytes in complex samples into single electrochemical signals are attractive candidates as low cost, high-throughput, portable and renewable sensor platforms. Here, we describe a simple but practical analytical device for sensing an anticancer drug in whole blood, using the detection of methotrexate (MTX) as a model system. In this biosensor, a novel carbon-based composite, tungsten phosphide embedded nitrogen-doped carbon nanotubes (WP/N-CNT), was fixed to the electrode surface that supported redox cycling. The electronic transmission channel in nitrogen doped carbon nanotubes (N-CNT) and the synergistic effect of uniform distribution tungsten phosphide (WP) ensured that the electrode materials have outstanding electrical conductivity and catalytic performance. Meanwhile, the surface electronic structure also endows its surprisingly reproducible performance. To demonstrate portable operation for MTX sensing, screen printing electrodes (SPE) was modified with WP/N-CNT. The sensor exhibited low detection limits (45 nM), wide detection range (0.01-540 μM), good selectivity and long-term stability for the determination of MTX. In addition, the technique was successfully applied for the determination of MTX in whole blood.
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Affiliation(s)
- Haifeng Zhou
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Guoxia Ran
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jean-Francois Masson
- Department of Chemistry, Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montreal, Quebec, Canada H3C 3J7
| | - Chan Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yuan Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Qijun Song
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
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8
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Chen J, Fu B, Liu T, Yan Z, Li K. A Graphene Oxide-DNA Electrochemical Sensor Based on Glassy Carbon Electrode for Sensitive Determination of Methotrexate. ELECTROANAL 2017. [DOI: 10.1002/elan.201700615] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jincheng Chen
- College of pharmacy; Guangdong Pharmaceutical University; Guangzhou 510006 China
| | - Bo Fu
- College of pharmacy; Guangdong Pharmaceutical University; Guangzhou 510006 China
| | - Tailin Liu
- College of pharmacy; Guangdong Pharmaceutical University; Guangzhou 510006 China
| | - Zhihong Yan
- College of pharmacy; Guangdong Pharmaceutical University; Guangzhou 510006 China
| | - Kang Li
- College of pharmacy; Guangdong Pharmaceutical University; Guangzhou 510006 China
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9
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Ensafi AA, Rezaloo F, Rezaei B. CoFe2O4/reduced graphene oxide/ionic liquid modified glassy carbon electrode, a selective and sensitive electrochemical sensor for determination of methotrexate. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.05.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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10
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Janíková-Bandžuchová L, Šelešovská R. Determination of Methotrexate at a Silver Solid Amalgam Electrode by Differential Pulse Voltammetry. ANAL LETT 2015. [DOI: 10.1080/00032719.2014.996812] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Sensitive determination of methotrexate at nano-Au self-assembled monolayer modified electrode. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.04.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Electrochemical oxidation behavior of methotrexate at DNA/SWCNT/Nafion composite film-modified glassy carbon electrode. J Solid State Electrochem 2012. [DOI: 10.1007/s10008-012-1763-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Sensitive and selective spectrophotometric assay of doxycycline hyclate in pharmaceuticals using Folin-Ciocalteu reagent. ACTA PHARMACEUTICA 2010; 60:445-54. [PMID: 21169136 DOI: 10.2478/v10007-010-0032-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A spectrophotometric method for the determination of doxycycline (DOX) is described. The method is based on the formation of blue colored chromogen due to reduction of tungstate and/or molybdate in Folin-Ciocalteu (F-C) reagent by DOX in alkaline medium. The colored species has an absorption maximum at 770 nm and the system obeys Beer's law over the concentration range 0.75-12.0 μg mL-1 DOX. The apparent molar absorptivity is 2.78 × 104 L mol-1 cm-1. The limit of quantification and detection values are reported to be 0.20 and 0.08 μg mL-1, respectively. Over the linear range applicable, the accuracy and precision of the method were evaluated on intra-day and inter-day basis. The reported mean accuracy value was 101.0 ± 1.7 %, the relative error was ≤ 2.7 % and the relative standard deviation was ≤ 2.5 %. Application of the proposed method to bulk powder and commercial pharmaceutical tablets is also presented. No significant difference was obtained between the results of the proposed method and the official BP method. The procedure described in this paper is simple, rapid, accurate and precise.
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14
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Šelešovská R, Bandžuchová L, Navrátil T. Voltammetric Behavior of Methotrexate Using Mercury Meniscus Modified Silver Solid Amalgam Electrode. ELECTROANAL 2010. [DOI: 10.1002/elan.201000440] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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el-Hady DA, el-Maali NA, Gotti R, Bertucci C, Mancini F, Andrisano V. Methotrexate determination in pharmaceuticals by enantioselective HPLC. J Pharm Biomed Anal 2005; 37:919-25. [PMID: 15862667 DOI: 10.1016/j.jpba.2004.07.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2004] [Revised: 07/13/2004] [Accepted: 07/16/2004] [Indexed: 10/26/2022]
Abstract
A simple, sensitive and selective high performance liquid chromatographic method with UV detection for the chiral separation of racemic methotrexate (rac-Mtx) and enantiomeric purity of L-methotrexate in pharmaceutical formulations was developed and validated. The chiral separation was optimized studying both the nature of the stationary phase by using Chirobiotic T, Chiracel OJ and human serum albumin columns and the effect of the mobile phase composition. The best results in terms of enantioresolution and enantioselectivity were achieved with a polar organic mobile phase on Chirobiotic T stationary phase. Essential steps in method validation such as precision, accuracy, suitability and stability were studied according to ICH guidelines. At wavelength 303 nm, the limit of detection (S/N=3) was found to be 0.9 microg/ml for rac-Mtx. The separation of D-Mtx at 0.2% (w/w) level (as limit of quantitation) from the main drug L-Mtx was successfully obtained with 1.72 enantioresolution value. Enantiomeric purity of L-Mtx was determined in pharmaceutical formulations (tablets and injections) with inter- and intra-days relative standard deviation < or = 1.6%. Under the validated stereoselective HPLC conditions for methotrexate, folic acid was also analysed.
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Affiliation(s)
- D Abd el-Hady
- Department of Chemistry, Faculty of Science, Assiut University, 71516 Assiut, Egypt
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Sabry SM, Abdel-Hady M, Elsayed M, Fahmy OT, Maher HM. Study of stability of methotrexate in acidic solution Spectrofluorimetric determination of methotrexate in pharmaceutical preparations through acid-catalyzed degradation reaction. J Pharm Biomed Anal 2003; 32:409-23. [PMID: 14565545 DOI: 10.1016/s0731-7085(03)00239-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Study of the degradation reaction of methotrexate (MTX) in acidic solution was carried out. Optimization of the experimental parameters of MTX acid hydrolysis was investigated. Spectrofluorimetric method for determination of MTX through measurement of its acid-degradation product, 4-amino-4-deoxy-10-methylpteroic acid (AMP), was developed. Stability of the standard solution of MTX prepared in sulfuric acid was discussed in the view of accelerated stability analysis. Two other comparative spectroflourimetric methods based on measuring the fluorescence intensities from either a condensation reaction with acetylacetone-formaldehyde (Hantzsch reaction) or a reaction with fluorescamine were also described. Beer's law validation, accuracy, precision, limits of detection, limits of quantification, and other aspects of analytical merit are presented in the text. The proposed methods were successfully applied for the analysis of MTX in pure drug and tablets dosage form. The sensitivity of the developed methods was favorable, so it was possible to be adopted for determination of MTX in plasma samples for routine use in high-dose MTX therapy.
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Affiliation(s)
- Suzy M Sabry
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt.
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Espinosa-Mansilla A, Durán Merás I, Zamora Madera A, Pedano L, Ferreyra C. Kinetic fluorimetric determination of the antineoplastic methotrexate (MTX) in human serum. J Pharm Biomed Anal 2002; 29:851-8. [PMID: 12093518 DOI: 10.1016/s0731-7085(02)00212-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A kinetic study of the oxidation of methotrexate (MTX) in acidic medium and in the presence of potassium permanganate has been made on the basis of the fluorescence-time curves. A kinetic method for the determination of MTX was developed with a range of application between 0.22 and 3.30 microM. The proposed kinetic method permits us to determine MTX in human serum and to avoid the natural fluorescence of the serum. A detection limit of 0.18 microM was calculated in the presence of ascorbic acid as activator. Only 100 s per sample is necessary for the analysis. The interference of pteridin derivatives and the rescue agent folinic acid (leucovorin) was tested.
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Affiliation(s)
- A Espinosa-Mansilla
- Department of Analytical Chemistry, University of Extremadura, 06071, Badajoz, Spain.
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18
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Spectrophotometric estimation of ketotifen fumarate in pharmaceutical formulations. Mikrochim Acta 1997. [DOI: 10.1007/bf01242725] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Affiliation(s)
- R K Gilpin
- College of Science and Mathematics, Wright State University, Dayton, Ohio 45435, USA
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