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Skorupa A, Michalkiewicz S, Jakubczyk M. Highly sensitive determination of α-lipoic acid in pharmaceuticals on a boron-doped diamond electrode. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
A simple, highly sensitive, and selective differential pulse voltammetry method for the determination of α-lipoic acid (LA) in pharmaceutical preparations was developed and validated. The method is based on a quasi-reversible, diffusion-controlled, one-electron anodic oxidation of LA on a boron-doped diamond electrode (BDDE) in a McIlvaine (citrate-phosphate, C-PB) buffer solution at pH 3.0. For the first time, this environment was used for LA determination. A linear calibration curve was obtained within the concentration range 5.82 × 10−8 to 4.00 × 10−4 mol L−1 with a correlation coefficient of 0.9999. The limits of detection was estimated to be 1.94 × 10−8 mol L−1, which is one of the lowest values characteristic of voltammetric and chromatographic methods of LA determination. The proposed procedure is sensitive, accurate, and precise. Its utility was demonstrated in the determination of LA in pharmaceuticals without the need for its separation from the matrices. The results were comparable to those obtained by high performance liquid chromatography reference method and were in good accordance with the once declared by manufacturers. Thus, our method can be considered as an alternative to the dominant chromatographic determinations of α-LA in real samples.
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Affiliation(s)
- Agata Skorupa
- Institute of Chemistry, Jan Kochanowski University , 7G Uniwersytecka St. , 25-406 Kielce , Poland
| | - Slawomir Michalkiewicz
- Institute of Chemistry, Jan Kochanowski University , 7G Uniwersytecka St. , 25-406 Kielce , Poland
| | - Magdalena Jakubczyk
- Institute of Chemistry, Jan Kochanowski University , 7G Uniwersytecka St. , 25-406 Kielce , Poland
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The Equilibria in Lipid-Lipoic Acid Systems: Monolayers, Microelectrophoretic and Interfacial Tension Studies. Molecules 2020; 25:molecules25163678. [PMID: 32806764 PMCID: PMC7465766 DOI: 10.3390/molecules25163678] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/02/2020] [Accepted: 08/10/2020] [Indexed: 01/25/2023] Open
Abstract
In this examination, we investigated the effect of lipoic acid (LA) on the properties of biological membrane models (monolayers, bilayers, and liposomes) formed from phosphatidylcholine (PC) or phosphatidylserine (PS) using the Langmuir, microelectrophoresis, and interfacial tension methods. The Langmuir technique allowed us to calculate the π–A isotherms and determine the molecular surface areas of pure and mixed monolayers. Using mathematical equations, we established that LA and the lipids formed complexes at a 1:1 ratio. The interfacial tension method was based on Young and Laplace’s equation. We assumed the formation of a 1:1 complex in the PC–LA system. Using the mathematical relationships, we derived the parameters characterizing the resulting complex, i.e., the surface occupied by the complex and the interfacial tension and stability constant of the formed complex. The microelectrophoretic method was used to determine the dependence of the zeta potential of the lipid membranes as a function of the pH (pH 2 to 10) of the electrolyte solution. The results indicate that modification of PC or PS membranes with LA affects changes in the zeta potential and the isoelectric point values.
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Ziyatdinova G, Antonova T, Vorobev V, Osin Y, Budnikov H. Selective voltammetric determination of α-lipoic acid on the electrode modified with SnO2 nanoparticles and cetyltriphenylphosphonium bromide. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-018-2341-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Timofeeva II, Vakh CS, Bulatov AV, Worsfold PJ. Flow analysis with chemiluminescence detection: Recent advances and applications. Talanta 2017; 179:246-270. [PMID: 29310229 DOI: 10.1016/j.talanta.2017.11.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/03/2017] [Accepted: 11/04/2017] [Indexed: 10/18/2022]
Abstract
This article highlights the most important developments in flow analysis with chemiluminescence (CL) detection, describing different flow systems that are compatible with CL detection, detector designs, commonly applied CL reactions and approaches to sample treatment. Recent applications of flow analysis with CL detection (focusing on outputs published since 2010) are also presented. Applications are classified by sample matrix, covering foods and beverages, environmental matrices, pharmaceuticals and biological fluids. Comprehensive tables are provided for each area, listing the specific sample matrix, CL reaction used, linear range, limit of detection and sample treatment for each analyte. Finally, recent and emerging trends in the field are also discussed.
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Affiliation(s)
- Irina I Timofeeva
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskayanab., St. Petersburg 199034, Russia.
| | - Christina S Vakh
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskayanab., St. Petersburg 199034, Russia
| | - Andrey V Bulatov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskayanab., St. Petersburg 199034, Russia
| | - Paul J Worsfold
- School of Geography, Earth and Environmental Sciences and Biogeochemistry Research Centre, Plymouth University, Plymouth, Devon PL4 8AA, UK
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Abstract
α-Lipoic acid (LA) is a unique antioxidant that is not only effective in affording protection against oxidative stress but also plays an essential role in metabolic processes of all living organisms. Therefore, the determination of LA and its metabolites content is crucial for understanding their physiological and pathophysiological functions. Most of the recently developed methods for the detection and determination of LA and its metabolites in various biological samples have focused on sample preparation procedures involving but not limited to sampling, extraction and storage. The main goal of this review is to summarize and critically evaluate the current state of the art of analytical procedures applied to the determination of LA and related compounds in biological samples.
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Santos Pereira LND, da Silva IS, Araújo TP, Tanaka AA, Angnes L. Fast quantification of α-lipoic acid in biological samples and dietary supplements using batch injection analysis with amperometric detection. Talanta 2016; 154:249-54. [PMID: 27154671 DOI: 10.1016/j.talanta.2016.03.046] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/11/2016] [Accepted: 03/12/2016] [Indexed: 11/20/2022]
Abstract
Batch injection analysis (BIA) with amperometric detection, using a pyrolytic graphite electrode modified with cobalt phthalocyanine (PG/CoPc), was employed for determination of α-lipoic acid (ALA) in pharmaceutical product and in synthetic urine samples. The proposed BIA method is based on the application of a potential of +0.9V vs. Ag/AgCl, KCl sat, enabling quantification of ALA over a concentration range from 1.3×10(-6) to 1.0×10(-4)molL(-1), with a detection limit of 1.5×10(-8)molL(-1). A sampling rate of 180 injections per hour was attained and measurements of the reproducibility of successive injections (100µmolL(-1) ALA on the same electrode) showed a RSD of 2.11% for 40 successive injections. The new sensor was utilised for ALA quantification in a dietary pharmaceutical supplement and in synthetic urine and the results obtained for both samples were compared with parallel analysis using high performance liquid chromatography (HPLC), the method recommended by the United States Pharmacopeia. The results obtained were similar (at a 95% confidence level) and in the case of the synthetic urine sample (prepared with a known amount of ALA) the recovery was situated between 98.0% and 102.6%.
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Affiliation(s)
- Laise Nayra Dos Santos Pereira
- Departamento de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, 1966, CEP 65080-805, São Luís, MA, Brazil
| | - Iranaldo Santos da Silva
- Departamento de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, 1966, CEP 65080-805, São Luís, MA, Brazil
| | - Thaylan Pinheiro Araújo
- Departamento de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, 1966, CEP 65080-805, São Luís, MA, Brazil
| | - Auro Atsushi Tanaka
- Departamento de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, 1966, CEP 65080-805, São Luís, MA, Brazil; Instituto Nacional de Ciência e Tecnologia de Bioanalítica, Caixa Postal 6154, CEP 13083-970 Campinas, SP, Brazil
| | - Lúcio Angnes
- Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, CEP 05599-970 São Paulo, SP, Brazil.
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He Y, Sui Y, Xu S, Chen F. Au NCs-enhanced chemiluminescence from NaHSO3–H2O2 and its analytical application. RSC Adv 2016. [DOI: 10.1039/c5ra24224j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
It was found that the ultra-weak chemiluminescence (CL) emission from the sodium bisulfite (NaHSO3)–H2O2 system could be enhanced by gold nanoclusters (Au NCs).
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Affiliation(s)
- Yanyan He
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| | - Yanyan Sui
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| | | | - Funan Chen
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
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Tsai CJ, Lin YC, Chen YL, Feng CH. Chemical derivatization combined with capillary LC or MALDI-TOF MS for trace determination of lipoic acid in cosmetics and integrated protein expression profiling in human keratinocytes. Talanta 2014; 130:347-55. [DOI: 10.1016/j.talanta.2014.07.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 07/03/2014] [Accepted: 07/07/2014] [Indexed: 01/24/2023]
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Ferreira APM, dos Santos Pereira LN, da Silva IS, Tanaka SMCN, Tanaka AA, Angnes L. Determination of α-Lipoic acid on a Pyrolytic Graphite Electrode Modified with Cobalt Phthalocyanine. ELECTROANAL 2014. [DOI: 10.1002/elan.201400421] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ahn J, Lim HB. Drop-Type Chemiluminescence (DCL) System and Sample Treatment Platform Using Magnetic Nanoparticles to Determine Enrofloxacin and Its Metabolite in a Chicken Meat. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-9871-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Pagano G, Aiello Talamanca A, Castello G, Cordero MD, d'Ischia M, Gadaleta MN, Pallardó FV, Petrović S, Tiano L, Zatterale A. Oxidative stress and mitochondrial dysfunction across broad-ranging pathologies: toward mitochondria-targeted clinical strategies. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:541230. [PMID: 24876913 PMCID: PMC4024404 DOI: 10.1155/2014/541230] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 02/24/2014] [Indexed: 02/07/2023]
Abstract
Beyond the disorders recognized as mitochondrial diseases, abnormalities in function and/or ultrastructure of mitochondria have been reported in several unrelated pathologies. These encompass ageing, malformations, and a number of genetic or acquired diseases, as diabetes and cardiologic, haematologic, organ-specific (e.g., eye or liver), neurologic and psychiatric, autoimmune, and dermatologic disorders. The mechanistic grounds for mitochondrial dysfunction (MDF) along with the occurrence of oxidative stress (OS) have been investigated within the pathogenesis of individual disorders or in groups of interrelated disorders. We attempt to review broad-ranging pathologies that involve mitochondrial-specific deficiencies or rely on cytosol-derived prooxidant states or on autoimmune-induced mitochondrial damage. The established knowledge in these subjects warrants studies aimed at elucidating several open questions that are highlighted in the present review. The relevance of OS and MDF in different pathologies may establish the grounds for chemoprevention trials aimed at compensating OS/MDF by means of antioxidants and mitochondrial nutrients.
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Affiliation(s)
- Giovanni Pagano
- Cancer Research Centre at Mercogliano (CROM), Istituto Nazionale Tumori Fondazione G. Pascale-IRCCS, 80131 Naples, Italy
| | - Annarita Aiello Talamanca
- Cancer Research Centre at Mercogliano (CROM), Istituto Nazionale Tumori Fondazione G. Pascale-IRCCS, 80131 Naples, Italy
| | - Giuseppe Castello
- Cancer Research Centre at Mercogliano (CROM), Istituto Nazionale Tumori Fondazione G. Pascale-IRCCS, 80131 Naples, Italy
| | - Mario D. Cordero
- Research Laboratory, Dental School, Sevilla University, 41009 Sevilla, Spain
| | - Marco d'Ischia
- Department of Chemical Sciences, Federico II University, 80126 Naples, Italy
| | - Maria Nicola Gadaleta
- National Research Council, Institute of Biomembranes and Bioenergetics, 70126 Bari, Italy
| | | | - Sandra Petrović
- “Vinca” Institute of Nuclear Sciences, University of Belgrade, 11070 Belgrade, Serbia
| | - Luca Tiano
- Department of Clinical and Dental Sciences, Polytechnical University of Marche, 60100 Ancona, Italy
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Advances in the use of acidic potassium permanganate as a chemiluminescence reagent: A review. Anal Chim Acta 2014; 807:9-28. [DOI: 10.1016/j.aca.2013.11.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 11/02/2013] [Accepted: 11/08/2013] [Indexed: 02/02/2023]
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Terry JM, Smith ZM, McDermott GP, Waite RJ, Barnett NW, Henderson LC, Altimari JM, Francis PS. Chemiluminescence detection of amino acids and related compounds using acidic potassium permanganate, manganese(IV) or tris(2,2′-bipyridine)ruthenium(III). Talanta 2012; 99:1051-6. [DOI: 10.1016/j.talanta.2012.06.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 06/09/2012] [Accepted: 06/11/2012] [Indexed: 10/28/2022]
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