1
|
Martinez-Rojas F, Espinosa-Bustos C, Ramirez G, Armijo F. Electrochemical oxidation of chlorpromazine, characterisation of products by mass spectroscopy and determination in pharmaceutical samples. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
2
|
Tan J, Wu S, Cai Q, Wang Y, Zhang P. Reversible regulation of enzyme-like activity of molybdenum disulfide quantum dots for colorimetric pharmaceutical analysis. J Pharm Anal 2021; 12:113-121. [PMID: 35573882 PMCID: PMC9073247 DOI: 10.1016/j.jpha.2021.03.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 02/24/2021] [Accepted: 03/25/2021] [Indexed: 12/15/2022] Open
Abstract
Regulating the catalytic activity of nanozymes is significant for their applications in various fields. Here, we demonstrate a new strategy to achieve reversible regulation of the nanozyme's activity for sensing purpose. This strategy involves the use of zero-dimensional MoS2 quantum dots (MQDs) as the building blocks of nanozymes which display very weak peroxidase (POD)-like activity. Interestingly, such POD-like activity of the MQDs largely enhances in the presence of Fe3+ while diminishes with the addition of captopril thereafter. Further investigations identify the mechanism of Fe3+-mediated aggregation-induced enhancement of the POD-like activity and the inhibitory effect of captopril on the enhancement, which is highly dependent on their concentrations. Based on this finding, a colorimetric method for the detection of captopril is developed. This sensing approach exhibits the merits of simplicity, rapidness, reliability, and low cost, which has been successfully applied in quality control of captopril in pharmaceutical products. Moreover, the present sensing platform allows smartphone read-out, which has promising applications in point-of-care testing devices for clinical diagnosis and drug analysis. A new post-synthesis strategy is developed to achieve reversible regulation of nanozyme's activity. Fe3+-mediated aggregation can enhance the peroxidase-like activity of MoS2 quantum dots more than 10 times. Quality control of captopril in pharmaceutical products is realized by manipulating nanozyme's catalytical activity. This sensing approach allows smartphone read-out, which has promising applications in point-of-care testing.
Collapse
|
3
|
Silva DM, Cunha Areias MC. Rutin as an Electrochemical Mediator in the Determination of Captopril using a Graphite Paste Electrode. ELECTROANAL 2020. [DOI: 10.1002/elan.201900145] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Diana Maria Silva
- Departamento de Química Fundamental, Centro de Ciências Exatas e da NaturezaUniversidade Federal de Pernambuco Av. Jornalista Anibal Fernandes, s/n° Cidade Universitária Recife, PE CEP 50.740-560
| | - Madalena Carneiro Cunha Areias
- Departamento de Química Fundamental, Centro de Ciências Exatas e da NaturezaUniversidade Federal de Pernambuco Av. Jornalista Anibal Fernandes, s/n° Cidade Universitária Recife, PE CEP 50.740-560
| |
Collapse
|
4
|
Colorimetric captopril assay based on oxidative etching-directed morphology control of silver nanoprisms. Mikrochim Acta 2020; 187:107. [DOI: 10.1007/s00604-019-4071-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 12/06/2019] [Indexed: 01/13/2023]
|
5
|
Smartphone application for captopril determination in dosage forms and synthetic urine employing digital imaging. Talanta 2018; 189:339-344. [PMID: 30086928 DOI: 10.1016/j.talanta.2018.07.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/06/2018] [Accepted: 07/08/2018] [Indexed: 11/20/2022]
Abstract
A simple, accurate, and low-cost analytical procedure for captopril determination through digital imaging is presented. The method relies on the spot test reaction between captopril and palladium (II) chloride, which produces a yellow and water-soluble complex with maximum absorption at 380 nm. A smartphone camera and a portable apparatus built for internal lighting control were put together to acquire digital images of reaction mixtures. Digital image processing through the RGB approach was used to establish a quantitative relationship between color intensity and captopril concentration. Under the most suitable operational and experimental conditions, an analytical curve was built monitoring the Blue channel within the concentration range of 3.12 × 10-5 to 1.21 × 10-3 mol L-1. Limits of detection and quantification were equal to 8.06 × 10-6 and 2.69 × 10-5 mol L-1, respectively. Recovery percentage in synthetic urine samples ranged from 97.1% to 102.9%. Results were compared with a reference method and no significant differences were detected at the 95% confidence level. The developed method presents budgetary and environmental advantages concerning the use of cheap and easy-handled devices and the consumption of very low volumes of reagent (800 μL per determination). It can be a useful analytical tool for laboratories with limited financial resources while abiding by green chemistry principles.
Collapse
|
6
|
A chemiluminescence reagent free method for the determination of captopril in medicine and urine samples by using trivalent silver. J Pharm Anal 2018; 7:252-257. [PMID: 29404046 PMCID: PMC5790706 DOI: 10.1016/j.jpha.2017.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 04/14/2017] [Accepted: 05/19/2017] [Indexed: 11/22/2022] Open
Abstract
A novel flow-injection chemiluminescence (FI-CL) method free of CL reagent was developed for the determination of captopril based on its enhancing effect on the CL derived from diperiodatoargentate(III)-sulfuric acid system. Compared with the conventional CL system, the CL system based on trivalent silver was characterized of good selectivity for the absence of CL reagent. The CL mechanism was discussed through CL spectra and UV-vis absorption spectra. The conditions of the FI-CL system were investigated and optimized. Under the optimal conditions, the relative CL intensity was linear with the captopril concentration in the range of 0.3-15.0 μg/mL. The detection limit for captopril was 0.05 μg/mL, and the relative standard deviation (n=11) was 2.0% for 5.0 μg/mL captopril. The proposed method was applied to the analysis of captopril in tablet and human urine with the recoveries of 83.1%-112.5%, and the relative standard deviations of 0.5%-4.4%. The results obtained by the proposed method agreed well with those obtained from HPLC method. The proposed method is fast, convenient, and cost-effective for the determination of captopril in medicine and biological samples.
Collapse
|
7
|
Cortes-Diaz MJA, Rodríguez-Flores J, Castañeda-Peñalvo G, Galar-Martínez M, Islas-Flores H, Dublán-García O, Gómez-Oliván LM. Sublethal effects induced by captopril on Cyprinus carpio as determined by oxidative stress biomarkers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 605-606:811-823. [PMID: 28683425 DOI: 10.1016/j.scitotenv.2017.06.208] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/21/2017] [Accepted: 06/24/2017] [Indexed: 06/07/2023]
Abstract
To our knowledge, this is the first study to evaluate captopril-induced oxidative stress in fish, and specifically in the common carp Cyprinus carpio. At present, very few studies in the international literature evaluate the sublethal effects of captopril on aquatic organisms such as fish, and available ones focus on determination of median lethal concentration in crustaceans and algae. Also, studies evaluating these effects do not make reference to the mechanism of action of this pharmaceutical or its toxicokinetics. This limits our knowledge of the characterization of the sublethal effects of this medication and of its potential ecological impact. The present study aimed to evaluate the sublethal effects induced by three different concentrations of captopril, on C. carpio), by determination of activity of the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx), as well as indicators of cellular oxidation: hydroperoxide content (HPC), lipid peroxidation (LPX) and protein carbonyl content (PCC). Specimens were exposed for 12, 24, 48, 72 and 96h to three different captopril concentrations: 1μgL-1, 1mgL-1 and 100mgL-1 (the first one has been detected environmentally, the other two have been associated with diverse toxic effects in aquatic species), and brain, gill, liver, kidney and blood samples were evaluated. Significant increases in HPC and LPX were observed mainly in kidney and gill, while PCC also increased in brain. Modifications were found in the activity of SOD (mostly in kidney, brain and blood), CAT (all organs) and GPx (kidney and gill). In conclusion, captopril induces oxidative stress in C. carpio.
Collapse
Affiliation(s)
- María Julieta Azalea Cortes-Diaz
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col. Residencial Colón, 50120 Toluca, Estado de México, México
| | - Juana Rodríguez-Flores
- Departamento de Química Analítica y Tecnología de los Alimentos, Facultad de Ciencias y Tecnología Química, Universidad de Castilla la Mancha, Avenida Camilo José Cela 10, 13072 Ciudad Real, España
| | - Gregorio Castañeda-Peñalvo
- Departamento de Química Analítica y Tecnología de los Alimentos, Facultad de Ciencias y Tecnología Química, Universidad de Castilla la Mancha, Avenida Camilo José Cela 10, 13072 Ciudad Real, España
| | - Marcela Galar-Martínez
- Laboratorio de Toxicología Acuática, Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Unidad Profesional Adolfo López Mateos, Av. Wilfrido Massieu Esq. Cda. Miguel Stampa s/n, Delegación Gustavo A. Madero, México, DF C.P.07738, México
| | - Hariz Islas-Flores
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col. Residencial Colón, 50120 Toluca, Estado de México, México.
| | - Octavio Dublán-García
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col. Residencial Colón, 50120 Toluca, Estado de México, México
| | - Leobardo Manuel Gómez-Oliván
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col. Residencial Colón, 50120 Toluca, Estado de México, México.
| |
Collapse
|
8
|
Electrochemical oxidation of catecholamines on fluorine-doped SnO2 substrates. Square-wave voltammetric method for methyldopa determination in pharmaceutical dosage forms. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.03.093] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
9
|
Voltammetric Detection of Captopril Using Copper(II) and an Unmodified Glassy Carbon Electrode. ELECTROANAL 2016. [DOI: 10.1002/elan.201501156] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
10
|
|
11
|
Wang Y, Jin J, Yuan C, Zhang F, Ma L, Qin D, Shan D, Lu X. A novel electrochemical sensor based on zirconia/ordered macroporous polyaniline for ultrasensitive detection of pesticides. Analyst 2015; 140:560-6. [DOI: 10.1039/c4an00981a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A simple and mild strategy was proposed to develop a novel electrochemical sensor based on zirconia/ordered macroporous polyaniline (ZrO2/OMP) and further used for the detection of methyl parathion (MP), one of the organophosphate pesticides (OPPs).
Collapse
Affiliation(s)
- Yonglan Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Jun Jin
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Caixia Yuan
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Fan Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Linlin Ma
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Dongdong Qin
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Duoliang Shan
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| |
Collapse
|
12
|
Molero L, Faundez M, Valle MAD, del Río R, Armijo F. Electrochemistry of methimazole on fluorine-doped tin oxide electrodes and its square-wave voltammetric determination in pharmaceutical formulations. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.10.142] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
13
|
Use of fluorine-doped tin oxide electrodes for lipoic acid determination in dietary supplements. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2011.12.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Rodrigues SSM, Santos JLM. Chemiluminometric determination of captopril in a multi-pumping flow system. Talanta 2012; 96:210-5. [PMID: 22817952 DOI: 10.1016/j.talanta.2012.02.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 02/06/2012] [Accepted: 02/07/2012] [Indexed: 11/15/2022]
Abstract
In this work, a simple, versatile and fully automated analytical methodology for the chemiluminometric determination of captopril - an angiotensin II-converting-enzyme (ACE) inhibitor - in pharmaceutical formulations, is proposed. The developed methodology was based on the enhancement by captopril of the chemiluminescence emission of tris(2,2'-bipyridyl)ruthenium(II). In sulphuric acid medium tris(2,2'-bipyridyl)ruthenium(II) was oxidized by cerium(IV) and converted into a reactive oxidant specie [Ru(bpy)(3)](3+), which was subsequently reduced with captopril in order to yield a significant enhancement of the original chemiluminescence emission that was directly related to captopril concentration. The analytical process was implemented by resorting to an automated multi-pumping flow system (MPFS) that enabled the establishment of multiple reaction interfaces, which, in combination with the created pulsed flowing stream assured a fast and reproducible sample/reagent mixing and reaction development essential to guarantee the generation and subsequent measurement of the short-lived species involved in the chemiluminescent process. The developed system employed three solenoid micro-pumps as the only flow manifold active components. These assured the insertion, propelling and commuting of all solutions. The automatic actuation of the solenoid micro-pumps provided an easily programmed, operated and controlled analytical flow system, exhibiting high versatility, efficiency and compactness at a low cost. Under the optimized experimental conditions, the proposed method allowed the determination of captopril for concentrations between 2×10(-3) and 1.5×10(-1)mmolL(-1) (r=0.9996, n=6) and a sampling frequency of about 58 determinations per hour, producing 620μL of waste per determination. The results obtained for pharmaceutical formulations were statistically comparable to those provided by the reference procedure with a relative deviation between -2.32 and 1.39%. The possible mechanism of the chemiluminescence reaction was also discussed in this work.
Collapse
Affiliation(s)
- S Sofia M Rodrigues
- Requimte, Departamento de Ciências Químicas, Laboratório de Química Analítica e Físico-Química, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, n° 164, 4099-030 Porto, Portugal
| | | |
Collapse
|
15
|
|
16
|
Yang YL, Hu CC, Hua CC. Preparation and characterization of nanocrystalline TixSn1−xO2 solid solutions via a microwave-assisted hydrothermal synthesis process. CrystEngComm 2011. [DOI: 10.1039/c1ce05353a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|