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Shao Z, Zeng J, Dong J, Li H, Yang R, Chen W, Wang S. [High performance liquid chromatography combined with the 2,2'-dithiodipyridine derivatization reaction for determination of different types of free thiols in human serum and analysis of their relationship with coronary heart disease]. Se Pu 2024; 42:352-359. [PMID: 38566424 PMCID: PMC10988564 DOI: 10.3724/sp.j.1123.2024.02001] [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: 02/02/2024] [Indexed: 04/04/2024] Open
Abstract
Oxidative stress, which is characterized by an imbalance between antioxidants and free radicals, plays a pivotal role in the pathogenesis of coronary heart disease, a common and serious cardiovascular condition, and contributes significantly to its development and progression. Serum free thiols are crucial components of the body's antioxidant defense system. The accurate determination of serum free thiol levels provides a reference basis for understanding the body's status and monitoring the risk factors associated with the occurrence and progression of coronary heart disease. In this study, a high performance liquid chromatographic (HPLC) method based on the derivatization reaction of 2,2'-dithiodipyridine was developed to simultaneously obtain the concentrations of total free thiols (Total-SH), low-molecular-mass free thiols (LMM-SH), and protein-free thiols (P-SH) in human serum. An Agilent Eclipse XDB-C18 column (150 mm×4.6 mm, 5 μm) was used for the analysis, and gradient elution was performed at a flow rate of 1 mL/min. A 0.1% formic acid aqueous solution was used as mobile phase A, and a 0.1% formic acid acetonitrile solution was used as mobile phase B. The gradient elution program was as follows: 0-0.1 min, 12%B-30%B; 0.1-2 min, 30%B; 2-2.1 min, 30%B-100%B; 2.1-6 min, 100%B; 6-6.1 min, 100%B-12%B; 6.1-7 min, 12%B. Well-separated peaks appeared after a run time of 5 min. The peak of 2-thiopyridone represented the Total-SH content of the samples, and the peak of the pyridyldithio derivative represented the LMM-SH content. The difference between these two peaks indicated the P-SH content. The derivatization reaction conditions were optimized, and the method was validated. The method demonstrated good linearity, with a correlation coefficient ≥0.9994, over the concentration range of 31.25-1000 μmol/L. The limits of detection for Total-SH and LMM-SH were 2.61 and 0.50 μmol/L, and the limits of quantification for Total-SH and LMM-SH were 8.71 and 1.67 μmol/L, respectively. The recoveries of Total-SH and LMM-SH were in the range of 91.1%-106.0%. The intra- and inter-day precisions ranged from 0.4% to 9.1%. The developed method was used to analyze serum samples from 714 volunteers. The Total-SH concentrations ranged from 376.60 to 781.12 μmol/L, with an average concentration of 555.62 μmol/L. The LMM-SH concentrations varied from 36.37 to 231.65 μmol/L,with an average of 82.34 μmol/L. The P-SH concentrations ranged from 288.36 to 687.74 μmol/L, with an average of 473.27 μmol/L. Spearman's correlation test showed that serum thiol levels were correlated with the severity of coronary artery disease and common clinical biochemical indicators. The proposed study provides a simple and reliable HPLC method for detecting serum free thiols and exploring their relationship with coronary heart disease, offering a new reference for the study of markers related to the risk of coronary heart disease.
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Affiliation(s)
- Zhiyu Shao
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
| | - Jie Zeng
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
| | - Jun Dong
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
| | - Hongxia Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
| | - Ruiyue Yang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
| | - Wenxiang Chen
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
| | - Siming Wang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
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Ziyatdinova G, Gimadutdinova L. Recent Advances in Electrochemical Sensors for Sulfur-Containing Antioxidants. MICROMACHINES 2023; 14:1440. [PMID: 37512751 PMCID: PMC10384414 DOI: 10.3390/mi14071440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023]
Abstract
Sulfur-containing antioxidants are an important part of the antioxidant defense systems in living organisms under the frame of a thiol-disulfide equilibrium. Among them, l-cysteine, l-homocysteine, l-methionine, glutathione, and α-lipoic acid are the most typical representatives. Their actions in living systems are briefly discussed. Being electroactive, sulfur-containing antioxidants are interesting analytes to be determined using various types of electrochemical sensors. Attention is paid to the chemically modified electrodes with various nanostructured coverages. The analytical capabilities of electrochemical sensors for sulfur-containing antioxidant quantification are summarized and discussed. The data are summarized and presented on the basis of the electrode surface modifier applied, i.e., carbon nanomaterials, metal and metal oxide nanoparticles (NPs) and nanostructures, organic mediators, polymeric coverage, and mixed modifiers. The combination of various types of nanomaterials provides a wider linear dynamic range, lower limits of detection, and higher selectivity in comparison to bare electrodes and sensors based on the one type of surface modifier. The perspective of the combination of chromatography with electrochemical detection providing the possibility for simultaneous determination of sulfur-containing antioxidants in a complex matrix has also been discussed.
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Affiliation(s)
- Guzel Ziyatdinova
- Analytical Chemistry Department, Kazan Federal University, Kremleyevskaya, 18, Kazan 420008, Russia
| | - Liliya Gimadutdinova
- Analytical Chemistry Department, Kazan Federal University, Kremleyevskaya, 18, Kazan 420008, Russia
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da Conceição P, Dos Santos Neto AG, Khan S, Tanaka AA, Santana AEG, Del Pilar Taboada-Sotomayor M, Goulart MOF, Santos ACF. Extraction-assisted voltammetric determination of homocysteine using magnetic nanoparticles modified with molecularly imprinted polymer. Mikrochim Acta 2023; 190:159. [PMID: 36973457 DOI: 10.1007/s00604-023-05738-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/10/2023] [Indexed: 03/29/2023]
Abstract
A magnetic graphite-epoxy composite (m-GEC) electrochemical sensor is presented based on magnetic imprinted polymer (mag-MIP) to determine homocysteine (Hcy). Mag-MIP was synthesized via precipitation polymerization, using functionalized magnetic nanoparticles (Fe3O4) together with the template molecule (Hcy), the functional monomer 2-hydroxyethyl methacrylate (HEMA), and the structural monomer trimethylolpropane trimethacrylate (TRIM). For mag-NIP (magnetic non-imprinted polymer), the procedure was the same in the absence of Hcy. Morphological and structural properties of the resultant mag-MIP and mag-NIP were examined using TEM, FT-IR, and Vibrating Sample Magnetometer. Under optimized conditions, the m-GEC/mag-MIP sensor showed a linear range of 0.1-2 µmol L-1, with a limit of detection (LOD) of 0.030 µmol L-1. In addition, the proposed sensor responded selectively to Hcy compared to several interferents present in biological samples. The recovery values determined by differential pulse voltammetry (DPV) were close to 100% for natural and synthetic samples, indicating good method accuracy. The developed electrochemical sensor proves to be a suitable device for determining Hcy, with advantages related to magnetic separation and electrochemical analysis.
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Affiliation(s)
- Poliana da Conceição
- Programa de Pós-graduação em Química e Biotecnologia (PPGQB), Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A.C. Simões, Tabuleiro dos Martins, AL, 57072-970, Maceió, Brazil
| | - Antonio Gomes Dos Santos Neto
- Departamento de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, MA, 1966, 65080-805, São Luís, Brazil
| | - Sabir Khan
- Instituto de Química, INCT-DATREM, Universidade Estadual Paulista, Rua Prof. Francisco Degni, 55, Araraquara, SP, Brazil
| | - Auro A Tanaka
- Departamento de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, MA, 1966, 65080-805, São Luís, Brazil
- National Institute of Science and Technology of Bioanalytics (INCT-Bio), Campinas, Brazil
| | - Antônio Euzébio G Santana
- Programa de Pós-graduação em Química e Biotecnologia (PPGQB), Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A.C. Simões, Tabuleiro dos Martins, AL, 57072-970, Maceió, Brazil
| | | | - Marília O F Goulart
- Programa de Pós-graduação em Química e Biotecnologia (PPGQB), Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A.C. Simões, Tabuleiro dos Martins, AL, 57072-970, Maceió, Brazil
- National Institute of Science and Technology of Bioanalytics (INCT-Bio), Campinas, Brazil
| | - Ana Caroline Ferreira Santos
- Programa de Pós-graduação em Química e Biotecnologia (PPGQB), Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A.C. Simões, Tabuleiro dos Martins, AL, 57072-970, Maceió, Brazil.
- National Institute of Science and Technology of Bioanalytics (INCT-Bio), Campinas, Brazil.
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Zaimbashi R, Tajik S, Beitollahi H, Torkzadeh-Mahani M. Fabrication of a Novel and Ultrasensitive Label-Free Electrochemical Aptasensor Based on Gold Nanostructure for Detection of Homocysteine. BIOSENSORS 2023; 13:bios13020244. [PMID: 36832010 PMCID: PMC9953955 DOI: 10.3390/bios13020244] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/18/2023] [Accepted: 02/01/2023] [Indexed: 06/12/2023]
Abstract
The current attempt was made to detect the amino acid homocysteine (HMC) using an electrochemical aptasensor. A high-specificity HMC aptamer was used to fabricate an Au nanostructured/carbon paste electrode (Au-NS/CPE). HMC at high blood concentration (hyperhomocysteinemia) can be associated with endothelial cell damage leading to blood vessel inflammation, thereby possibly resulting in atherogenesis leading to ischemic damage. Our proposed protocol was to selectively immobilize the aptamer on the gate electrode with a high affinity to the HMC. The absence of a clear alteration in the current due to common interferants (methionine (Met) and cysteine (Cys)) indicated the high specificity of the sensor. The aptasensor was successful in sensing HMC ranging between 0.1 and 30 μM, with a narrow limit of detection (LOD) as low as 0.03 μM.
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Affiliation(s)
- Reza Zaimbashi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631818356, Iran
| | - Somayeh Tajik
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman 7616913555, Iran
| | - Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631818356, Iran
| | - Masoud Torkzadeh-Mahani
- Biotechnology Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631818356, Iran
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Zhu C, Zhang J, Zhang S, Liu C, Liu X, Jin J, Zheng D. An Amperometric Biomedical Sensor for the Determination of Homocysteine Using Gold Nanoparticles and Acetylene Black-Dihexadecyl Phosphate-Modified Glassy Carbon Electrode. MICROMACHINES 2023; 14:198. [PMID: 36677259 PMCID: PMC9865262 DOI: 10.3390/mi14010198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
A novel nanocomposite film composed of gold nanoparticles and acetylene black-dihexadecyl phosphate was fabricated and modified on the surface of a glassy carbon electrode through a simple and controllable dropping and electropolymerization method. The nanocomposite film electrode showed a good electrocatalytic response to the oxidation of homocysteine and can work as an amperometric biomedical sensor for homocysteine. With the aid of scanning electron microscopy, energy dispersive X-ray technology and electrochemical impedance spectroscopy, the sensing interface was characterized, and the sensing mechanism was discussed. Under optimal conditions, the oxidation peak current of homocysteine was linearly increased with its concentration in the range of 3.0 µmol/L~1.0 mmol/L, and a sensitivity of 18 nA/(μmol/L) was obtained. Furthermore, the detection limit was determined as 0.6 µmol/L, and the response time was detected as 3 s. Applying the nanocomposite film electrode for monitoring the homocysteine in human blood serum, the results were satisfactory.
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Affiliation(s)
- Chunnan Zhu
- College of Biomedical Engineering, South-Central Minzu University, Wuhan 430074, China
- Key Laboratory of Brain Cognitive Science (State Ethnic Affairs Commission), South-Central Minzu University, Wuhan 430074, China
- Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis & Treatment, Wuhan 430074, China
| | - Jingfang Zhang
- College of Biomedical Engineering, South-Central Minzu University, Wuhan 430074, China
| | - Shunrun Zhang
- College of Biomedical Engineering, South-Central Minzu University, Wuhan 430074, China
| | - Chao Liu
- College of Biomedical Engineering, South-Central Minzu University, Wuhan 430074, China
- Key Laboratory of Brain Cognitive Science (State Ethnic Affairs Commission), South-Central Minzu University, Wuhan 430074, China
- Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis & Treatment, Wuhan 430074, China
| | - Xiaojun Liu
- College of Biomedical Engineering, South-Central Minzu University, Wuhan 430074, China
- Key Laboratory of Brain Cognitive Science (State Ethnic Affairs Commission), South-Central Minzu University, Wuhan 430074, China
- Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis & Treatment, Wuhan 430074, China
| | - Jian Jin
- The First Hospital of Wuhan, Wuhan 430022, China
| | - Dongyun Zheng
- College of Biomedical Engineering, South-Central Minzu University, Wuhan 430074, China
- Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis & Treatment, Wuhan 430074, China
- The First Hospital of Wuhan, Wuhan 430022, China
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Newair EF, Garcia F. Identification of adducts between oxidized rosmarinic acid and glutathione compounds by electrochemistry, liquid chromatography and mass spectrometry. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:286-297. [PMID: 34985052 DOI: 10.1039/d1ay01699g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Natural polyphenols are omnipresent and are an integral part of the human diet as well as quinones. Glutathione (GSH) is present in a significant amount inside cells and consequently, GSH conjugates of polyphenols will be encountered in the body. In the current work, voltammetry and liquid chromatography-mass spectrometry were carried out to characterize the reaction mechanism of the electrochemical oxidation of polyphenolic rosmarinic acid (RA) with GSH nucleophiles in aqueous solution. Electrochemical investigation of RA revealed that two consecutive transfer steps (which depend on pH) of two electrons and protons occur during the reversible oxidation of RA. Moreover, it was found that the first oxidation step is associated with the 3,4-dihydroxyphenyl lactic acid moiety, whereas the second oxidation step corresponds to the oxidation of the caffeic acid one. By using ultrahigh-performance liquid chromatography-diode array detection-mass spectrometry (UPLC-DAD-MS) in the negative ion mode, the oxidation pathways of RA in the presence of GSH were analyzed, and a total of four RA-GSH conjugates were identified. The oxidative degradation pathway of RA can be better apprehended and forecasted by the acquired results in this study.
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Affiliation(s)
- Emad F Newair
- Unit of Electrochemistry Applications (UEA), Chemistry Department, Faculty of Science, Sohag University, Sohag 82524, Egypt.
| | - François Garcia
- SPO, INRA, Montpellier Supagro, Montpellier University, UMR 1083, F-34060, Montpellier, France
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Moulaee K, Neri G. Electrochemical Amino Acid Sensing: A Review on Challenges and Achievements. BIOSENSORS 2021; 11:502. [PMID: 34940259 PMCID: PMC8699811 DOI: 10.3390/bios11120502] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/18/2021] [Accepted: 11/25/2021] [Indexed: 05/05/2023]
Abstract
The rapid growth of research in electrochemistry in the last decade has resulted in a significant advancement in exploiting electrochemical strategies for assessing biological substances. Among these, amino acids are of utmost interest due to their key role in human health. Indeed, an unbalanced amino acid level is the origin of several metabolic and genetic diseases, which has led to a great need for effective and reliable evaluation methods. This review is an effort to summarize and present both challenges and achievements in electrochemical amino acid sensing from the last decade (from 2010 onwards) to show where limitations and advantages stem from. In this review, we place special emphasis on five well-known electroactive amino acids, namely cysteine, tyrosine, tryptophan, methionine and histidine. The recent research and achievements in this area and significant performance metrics of the proposed electrochemical sensors, including the limit of detection, sensitivity, stability, linear dynamic range(s) and applicability in real sample analysis, are summarized and presented in separate sections. More than 400 recent scientific studies were included in this review to portray a rich set of ideas and exemplify the capabilities of the electrochemical strategies to detect these essential biomolecules at trace and even ultra-trace levels. Finally, we discuss, in the last section, the remaining issues and the opportunities to push the boundaries of our knowledge in amino acid electrochemistry even further.
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Affiliation(s)
- Kaveh Moulaee
- Department of Engineering, University of Messina, C.Da Di Dio, I-98166 Messina, Italy;
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran 16846-13114, Iran
| | - Giovanni Neri
- Department of Engineering, University of Messina, C.Da Di Dio, I-98166 Messina, Italy;
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Wei J, Yu L, Yan L, Bai W, Lu X, Gao Z. Synthesis of 9,9-bis(4-hydroxyphenyl) fluorene catalyzed by bifunctional ionic liquids. RSC Adv 2021; 11:32559-32564. [PMID: 35493579 PMCID: PMC9041788 DOI: 10.1039/d1ra05967j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/10/2021] [Indexed: 11/21/2022] Open
Abstract
A series of bifunctional ionic liquids (BFILs) containing sulfonic acid (–SO3H) and sulfhydryl groups (–SH) were synthesized, and their catalytic performance in the condensation reaction of 9-fluorenone and phenol were studied.
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Affiliation(s)
- Jialun Wei
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Limei Yu
- State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116024, China
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Lei Yan
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Wei Bai
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Xinxin Lu
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Zhanxian Gao
- State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116024, China
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
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Yakovleva O, Bogatova K, Mukhtarova R, Yakovlev A, Shakhmatova V, Gerasimova E, Ziyatdinova G, Hermann A, Sitdikova G. Hydrogen Sulfide Alleviates Anxiety, Motor, and Cognitive Dysfunctions in Rats with Maternal Hyperhomocysteinemia via Mitigation of Oxidative Stress. Biomolecules 2020; 10:biom10070995. [PMID: 32630731 PMCID: PMC7408246 DOI: 10.3390/biom10070995] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/26/2020] [Accepted: 06/30/2020] [Indexed: 12/18/2022] Open
Abstract
Hydrogen sulfide (H2S) is endogenously produced from sulfur containing amino acids, including homocysteine and exerts neuroprotective effects. An increase of homocysteine during pregnancy impairs fetal growth and development of the offspring due to severe oxidative stress. We analyzed the effects of the H2S donor—sodium hydrosulfide (NaHS) administered to female rats with hyperhomocysteinemia (hHcy) on behavioral impairments and levels of oxidative stress of their offspring. Rats born from females fed with control or high methionine diet, with or without H2S donor injections were investigated. Rats with maternal hHcy exhibit increased levels of total locomotor activity and anxiety, decreased muscle endurance and motor coordination, abnormalities of fine motor control, as well as reduced spatial memory and learning. Oxidative stress in brain tissues measured by activity of glutathione peroxidases and the level of malondialdehyde was higher in rats with maternal hHcy. Concentrations of H2S and the activity and expression of the H2S generating enzyme—cystathionine-beta synthase—were lower compared to the control group. Administration of the H2S donor to females with hHcy during pregnancy prevented behavioral alterations and oxidative stress of their offspring. The acquisition of behavioral together with biochemical studies will add to our knowledge about homocysteine neurotoxicity and proposes H2S as a potential agent for therapy of hHcy associated disorders.
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Affiliation(s)
- Olga Yakovleva
- Department of Human and Animal physiology, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia; (O.Y.); (K.B.); (R.M.); (A.Y.); (V.S.); (E.G.)
| | - Ksenia Bogatova
- Department of Human and Animal physiology, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia; (O.Y.); (K.B.); (R.M.); (A.Y.); (V.S.); (E.G.)
| | - Renata Mukhtarova
- Department of Human and Animal physiology, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia; (O.Y.); (K.B.); (R.M.); (A.Y.); (V.S.); (E.G.)
| | - Aleksey Yakovlev
- Department of Human and Animal physiology, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia; (O.Y.); (K.B.); (R.M.); (A.Y.); (V.S.); (E.G.)
| | - Viktoria Shakhmatova
- Department of Human and Animal physiology, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia; (O.Y.); (K.B.); (R.M.); (A.Y.); (V.S.); (E.G.)
| | - Elena Gerasimova
- Department of Human and Animal physiology, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia; (O.Y.); (K.B.); (R.M.); (A.Y.); (V.S.); (E.G.)
| | - Guzel Ziyatdinova
- Department of analytical chemistry, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia;
| | - Anton Hermann
- Department of Biosciences, University of Salzburg, Salzburg 5020, Austria;
| | - Guzel Sitdikova
- Department of Human and Animal physiology, Kazan Federal University, 18 Kremlevskaya str., 420008 Kazan, Russia; (O.Y.); (K.B.); (R.M.); (A.Y.); (V.S.); (E.G.)
- Correspondence: ; Tel.: +7-903-306-1092
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10
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Arsad SS, Zainudin MAM, De Gobba C, Jongberg S, Larsen FH, Lametsch R, Andersen ML, Lund MN. Quantitation of Protein Cysteine-Phenol Adducts in Minced Beef Containing 4-Methyl Catechol. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:2506-2515. [PMID: 32013414 DOI: 10.1021/acs.jafc.9b07752] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thiol groups of cysteine (Cys) residues in proteins react with quinones, oxidation products of polyphenols, to form protein-polyphenol adducts. The aim of the present work was to quantify the amount of adduct formed between Cys residues and 4-methylcatechol (4MC) in minced beef. A Cys-4MC adduct standard was electrochemically synthesized and characterized by liquid chromatography-mass spectrometry (LC-MS) as well as NMR spectroscopy. Cys-4MC adducts were quantified after acidic hydrolysis of myofibrillar protein isolates (MPIs) and LC-MS/MS analysis of meat containing either 500 or 1500 ppm 4MC and stored at 4 °C for 7 days under a nitrogen or oxygen atmosphere. The concentrations of Cys-4MC were found to be 2.2 ± 0.3 nmol/mg MPI and 8.1 ± 0.9 nmol/mg MPI in meat containing 500 and 1500 ppm 4MC, respectively, and stored for 7 days under oxygen. The formation of the Cys-4MC adduct resulted in protein thiol loss, and ca. 62% of the thiol loss was estimated to account for the formation of the Cys-4MC adduct for meat containing 1500 ppm 4MC. Furthermore, protein polymerization increased in samples containing 4MC as evaluated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and the polymerization was found to originate from protein-polyphenol interactions as evaluated by a blotting assay with staining by nitroblue tetrazolium.
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Affiliation(s)
- Siti Suriani Arsad
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3 , 2200 Copenhagen N , Denmark
| | - Mohd Asraf Mohd Zainudin
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
- Faculty of Engineering Technology , Universiti Malaysia Perlis , 02100 Kangar , Perlis Indera Kayangan , Malaysia
| | - Cristian De Gobba
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
| | - Sisse Jongberg
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
| | - Flemming H Larsen
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
| | - René Lametsch
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
| | - Mogens L Andersen
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , Frederiksberg C., 1958 Frederiksberg , Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3 , 2200 Copenhagen N , Denmark
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11
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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
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12
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Cocoa powder and catechins as natural mediators to modify carbon-black based screen-printed electrodes. Application to free and total glutathione detection in blood. Talanta 2020; 207:120349. [DOI: 10.1016/j.talanta.2019.120349] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/08/2019] [Accepted: 09/11/2019] [Indexed: 02/07/2023]
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13
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A potential role for T-type calcium channels in homocysteinemia-induced peripheral neuropathy. Pain 2019; 160:2798-2810. [DOI: 10.1097/j.pain.0000000000001669] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Zhao H, Wen X, Li W, Li Y, Yin C. A copper-mediated on–off–on gold nanocluster for endogenous GSH sensing to drive cancer cell recognition. J Mater Chem B 2019; 7:2169-2176. [DOI: 10.1039/c8tb03184c] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The AuNCs@Tf-Cu2+system for the sensitive and selective detection of endogenous glutathione (GSH) can illuminate tumor cells rather than normal cells, which implied its great potential application in cancer diagnosis.
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Affiliation(s)
- Hemiao Zhao
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Xiangping Wen
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Wenyan Li
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Yingqi Li
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Caixia Yin
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- P. R. China
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15
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Kaur N, Chopra S, Singh G, Raj P, Bhasin A, Sahoo SK, Kuwar A, Singh N. Chemosensors for biogenic amines and biothiols. J Mater Chem B 2018; 6:4872-4902. [PMID: 32255063 DOI: 10.1039/c8tb00732b] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
There is burgeoning interest among supramolecular chemists to develop novel molecular systems to detect biogenic amines and bio-thiols in aqueous and non-aqueous media due to their potential role in biological processes. Biogenic amines are biologically important targets because of their involvement in the energy metabolism of human biological systems and their requirement is met through food and nutrition. However, the increasing instances of serious health problems due to food toxicity have raised the quality of food nowadays. Biogenic amines have been frequently considered as the markers or primary quality parameters of foods like antioxidant properties, freshness and spoilage. For instance, these amines such as spermine, spermidine, cadavarine, etc. may originate during microbial decarboxylation of amino acids of fermented foods/beverages. These amines may also react with nitrite available in certain meat products and concomitantly produce carcinogenic nitrosamine compounds. On the other hand, it is also well established that biothiols, particularly, thiol amino acids, provide the basic characteristics to food including flavor, color and texture that determine its acceptability. For instance, the reduction of thiol groups produces hydrogen sulfide which reduces flavour as in rotten eggs and spoiled fish, and the presence of hydrogen sulfide in fish is indicative of spoilage. Thus, biogenic amines and bio-thiols have attracted the profound interest of researchers as analytical tools for their quantification. Much scientific and technological information is issued every year, where the establishment of precise interactions of biogenic amines and bio-thiols with other molecules is sought in aqueous and non-aqueous media. This review summarizes the optical chemosensors developed for the selective detection of biogenic amines and bio-thiols.
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Affiliation(s)
- Navneet Kaur
- Department of Chemistry, Panjab University (PU), Chandigarh-160014, India.
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16
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Wang H, Lu Q, Li M, Li H, Liu Y, Li H, Zhang Y, Yao S. Electrochemically prepared oxygen and sulfur co-doped graphitic carbon nitride quantum dots for fluorescence determination of copper and silver ions and biothiols. Anal Chim Acta 2018; 1027:121-129. [PMID: 29866261 DOI: 10.1016/j.aca.2018.03.063] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 03/23/2018] [Accepted: 03/27/2018] [Indexed: 01/20/2023]
Abstract
Although great advances have been achieved in synthesis of fluorescent graphitic carbon nitride quantum dots (g-C3N4-dots), it is still challenging to develop g-C3N4-dots with high fluorescence quantum yield (FLQY) and multiple sensing functionalities. Herein, the oxygen and sulfur co-doped graphitic carbon nitride quantum dots (OS-g-C3N4-dots) with high FLQY of 33.9% were firstly synthesized by a simple electrochemical "tailoring" process. It was found that OS-g-C3N4-dots could specifically bind copper ions (Cu2+) and silver ions (Ag+), accompanied with a dramatic "turn-off" fluorescence response. With the help of different masking agents, OS-g-C3N4-dots are able to selectively detect Cu2+ and Ag+. Furthermore, the generated OS-g-C3N4-dots/Ag+ displayed a "turn-on" fluorescent response specific to biothiols (HCy, Cys and GSH). Therefore, the multiple functional sensing platforms based on "ON-OFF-ON" fluorescence response of OS-g-C3N4-dots for the detection of Cu2+, Ag+ and biothiols were constructed. Under the optimal conditions, the detection limits of Cu2+, Ag+, HCy, Cys and GSH were as low as 7.0 × 10-10 M, 2.0 × 10-9 M, 1.0 × 10-8 M, 1.0 × 10-8 M and 8.4 × 10-9 M, respectively. Moreover, the prepared platforms could be successfully applied to the determination of Cu2+, Ag+ and biothiols in practical samples and exhibited excellent sensitivity and selectivity.
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Affiliation(s)
- Haiyan Wang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Qiujun Lu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Mingxia Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Huan Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Yalan Liu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Haitao Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China.
| | - Shouzhuo Yao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
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17
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Newair EF, Nafady A, Abdel-Hamid R, Al-Enizi AM, Garcia F. Mechanistic Pathways and Identification of the Electrochemically Generated Oxidation Products of Flavonoid Eriodictyol in the Presence of Glutathione. ELECTROANAL 2018. [DOI: 10.1002/elan.201800071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Emad F. Newair
- Unit of Electrochemistry Applications (UEA), Department of Chemistry, Faculty of Science; Sohag University; Sohag 82524 Egypt
| | - Ayman Nafady
- Department of Chemistry, College of Science; King Saud University; Riyadh 11451 Saudi Arabia
- Unit of Electrochemistry Applications (UEA), Department of Chemistry, Faculty of Science; Sohag University; Sohag 82524 Egypt
| | - Refat Abdel-Hamid
- Unit of Electrochemistry Applications (UEA), Department of Chemistry, Faculty of Science; Sohag University; Sohag 82524 Egypt
| | - Abdullah M. Al-Enizi
- Department of Chemistry, College of Science; King Saud University; Riyadh 11451 Saudi Arabia
| | - François Garcia
- SPO, INRA, Montpellier Supagro; Univ Montpellier; Montpellier France
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18
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Affiliation(s)
- B. Kollbe Ahn
- Marine Science Institute, University of California, Santa Barbara, California 93106, United States
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19
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Liu Z, Liu Y, Kim E, Bentley WE, Payne GF. Electrochemical Probing through a Redox Capacitor To Acquire Chemical Information on Biothiols. Anal Chem 2016; 88:7213-21. [PMID: 27385047 PMCID: PMC4962791 DOI: 10.1021/acs.analchem.6b01394] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
![]()
The
acquisition of chemical information is a critical need for
medical diagnostics, food/environmental monitoring, and national security.
Here, we report an electrochemical information processing approach
that integrates (i) complex electrical inputs/outputs, (ii) mediators
to transduce the electrical I/O into redox signals that can actively
probe the chemical environment, and (iii) a redox capacitor that manipulates
signals for information extraction. We demonstrate the capabilities
of this chemical information processing strategy using biothiols because
of the emerging importance of these molecules in medicine and because
their distinct chemical properties allow evaluation of hypothesis-driven
information probing. We show that input sequences can be tailored
to probe for chemical information both qualitatively (step inputs
probe for thiol-specific signatures) and quantitatively. Specifically,
we observed picomolar limits of detection and linear responses to
concentrations over 5 orders of magnitude (1 pM–0.1 μM).
This approach allows the capabilities of signal processing to be extended
for rapid, robust, and on-site analysis of chemical information.
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Affiliation(s)
- Zhengchun Liu
- Department of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University , Changsha 410083, People's Republic of China.,Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - Yi Liu
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - Eunkyoung Kim
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - William E Bentley
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - Gregory F Payne
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
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21
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Devadoss A, Kuragano A, Terashima C, Sudhagar P, Nakata K, Kondo T, Yuasa M, Fujishima A. Single-step electrospun TiO2–Au hybrid electrodes for high selectivity photoelectrocatalytic glutathione bioanalysis. J Mater Chem B 2016; 4:220-228. [DOI: 10.1039/c5tb01740h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-step electrospun Au nanoparticle decorated TiO2 nanofiber membrane served as effective photoanode for highly selective glutathione analysis with a photoelectrocatalytic oxidation process.
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Affiliation(s)
- Anitha Devadoss
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
| | - Asako Kuragano
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
| | - Chiaki Terashima
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
| | - P. Sudhagar
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
| | - Kazuya Nakata
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
| | - Takeshi Kondo
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
| | - Makoto Yuasa
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
| | - Akira Fujishima
- Photocatalysis International Research Center
- Research Institute for Science & Technology
- Tokyo University of Science
- Noda
- Japan
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22
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Valero-Ruiz E, González-Sánchez MI, Batchelor-McAuley C, Compton RG. Halogen mediated voltammetric oxidation of biological thiols and disulfides. Analyst 2015; 141:144-9. [PMID: 26539570 DOI: 10.1039/c5an01955a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrochemical generation of the halides, bromine and iodine, in the presence of biologically relevant organosulfur is demonstrated to result in an analytically useful response. In the case of the iodide/iodine redox couple only the thiol causes an increase in the electrochemical oxidative peak current. Conversely, the formed bromine may catalytically oxidise both thiols and disulfides. Hence, the differing reactivities of the halide ions readily allow discrimination between the closely related thiol and disulphide species. For all of the organosulfur species investigated (glutathione, cysteine and homocysteine) micromolar limits of detection are attainable. In the case of the bromine mediated oxidation this sensitivity at least partially arises from the large catalytic amplification, such that, for each disulphide molecule up to ten electrons may be transferred. Ultimately this bromine oxidation results in the formation of the sulfonate species. For the iodine mediated oxidation of the thiols the oxidation proceeds no further than to the formation of the associated disulfide.
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Affiliation(s)
- Edelmira Valero-Ruiz
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK.
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23
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Salehzadeh H, Nematollahi D, Alizadeh S. Electrografting of 4-tert-Butylcatechol on GC Electrode. Selective Electrochemical Determination of Homocysteine. ELECTROANAL 2015. [DOI: 10.1002/elan.201500091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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24
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LEE PT, COMPTON RG. Selective Thiol Detection in Authentic Biological Samples with the Use of Screen-printed Electrodes. ANAL SCI 2015; 31:685-91. [DOI: 10.2116/analsci.31.685] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Patricia T. LEE
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University
| | - Richard G. COMPTON
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University
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25
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Lee PT, Thomson JE, Karina A, Salter C, Johnston C, Davies SG, Compton RG. Selective electrochemical determination of cysteine with a cyclotricatechylene modified carbon electrode. Analyst 2015; 140:236-42. [DOI: 10.1039/c4an01835d] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the selective electrochemical detection of cysteine in the presence of homocysteine and glutathione with the use of an electrode modified with cyclotricatechylene (CTC).
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Affiliation(s)
- Patricia T. Lee
- Department of Chemistry
- Physical and Theoretical Chemistry Laboratory
- University of Oxford
- Oxford
- UK
| | - James E. Thomson
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Athanasia Karina
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Chris Salter
- Department of Materials
- University of Oxford
- Oxford
- UK
| | | | - Stephen G. Davies
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Richard G. Compton
- Department of Chemistry
- Physical and Theoretical Chemistry Laboratory
- University of Oxford
- Oxford
- UK
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26
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Madasamy T, Santschi C, Martin OJF. A miniaturized electrochemical assay for homocysteine using screen-printed electrodes with cytochrome c anchored gold nanoparticles. Analyst 2015. [DOI: 10.1039/c5an00752f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Electrochemical point-of-care analysis of homocysteine in a drop of the blood plasma samples.
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Affiliation(s)
- Thangamuthu Madasamy
- Nanophotonics and Metrology Laboratory (NAM)
- Swiss Federal Institute of Technology Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
| | - Christian Santschi
- Nanophotonics and Metrology Laboratory (NAM)
- Swiss Federal Institute of Technology Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
| | - Olivier J. F. Martin
- Nanophotonics and Metrology Laboratory (NAM)
- Swiss Federal Institute of Technology Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
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27
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The use of screen-printed electrodes in a proof of concept electrochemical estimation of homocysteine and glutathione in the presence of cysteine using catechol. SENSORS 2014; 14:10395-411. [PMID: 24926695 PMCID: PMC4118355 DOI: 10.3390/s140610395] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/05/2014] [Accepted: 06/10/2014] [Indexed: 11/18/2022]
Abstract
Screen printed electrodes were employed in a proof of concept determination of homocysteine and glutathione using electrochemically oxidized catechol via a 1,4-Michael addition reaction in the absence and presence of cysteine, and each other. Using cyclic voltammetry, the Michael reaction introduces a new adduct peak which is analytically useful in detecting thiols. The proposed procedure relies on the different rates of reaction of glutathione and homocysteine with oxidized catechol so that at fast voltage scan rates only homocysteine is detected in cyclic voltammetry. At slower scan rates, both glutathione and homocysteine are detected. The combination of the two sets of data provides quantification for homocysteine and glutathione. The presence of cysteine is shown not to interfere provided sufficient high concentrations of catechol are used. Calibration curves were determined for each homocysteine and glutathione detection; where the sensitivities are 0.019 μA·μM−1 and 0.0019 μA·μM−1 and limit of detections are ca. 1.2 μM and 0.11 μM for homocysteine and glutathione, respectively, within the linear range. This work presents results with potential and beneficial use in re-useable and/or disposable point-of-use sensors for biological and medical applications.
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28
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Nissim R, Compton RG. Introducing absorptive stripping voltammetry: wide concentration range voltammetric phenol detection. Analyst 2014; 139:5911-8. [DOI: 10.1039/c4an01417k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
“Absorptive stripping voltammetry”, a new electroanalytical method, is validated by phenol detection.
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Affiliation(s)
- Rita Nissim
- Department of Chemistry
- Physical & Theoretical Chemistry Laboratory
- Oxford University
- Oxford, UK
| | - Richard G. Compton
- Department of Chemistry
- Physical & Theoretical Chemistry Laboratory
- Oxford University
- Oxford, UK
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