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Kilimci U, Uygun DA. Preparation of PEGylated uricase attached magnetic nanowires and application for uric acid oxidation. J Biotechnol 2023; 373:12-19. [PMID: 37343601 DOI: 10.1016/j.jbiotec.2023.06.005] [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: 09/26/2022] [Revised: 04/07/2023] [Accepted: 06/16/2023] [Indexed: 06/23/2023]
Abstract
The present study aims to immobilize the uricase enzyme on magnetic nanowires and to examine its potential for use in the treatment of gout. For this, Au/Ni/Au nanowires were synthesized using a polycarbonate membrane template by the sequential electrodeposition of Au, Ni, and Au, respectively. The uricase enzyme was covalently attached to these nanowires and was also coated with PEG. Optimum enzymatic conditions, kinetic parameters, thermal, storage, and operational stability were determined by performing enzymatic activity tests of free and immobilized uricase. Additionally, the efficacy of both enzyme preparations in artificial human serum and the presence of protease was also investigated. Experimental results showed that immobilized uricase showed higher stability than free uricase in all studied conditions. The potential of immobilized uricase to oxidize uric acid in artificial serum was also investigated and it was found that immobilized preparation demonstrated approximately 6 times higher activity than that of the free enzyme. The results of this study showed that uricase-attached nanowires oxidized uric acid effectively and are promising in the treatment of gout.
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Affiliation(s)
- Ulviye Kilimci
- Adnan Menderes University, Faculty of Science, Chemistry Department, Aydın, Turkey
| | - Deniz Aktaş Uygun
- Adnan Menderes University, Faculty of Science, Chemistry Department, Aydın, Turkey.
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2
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Caliskan S, Yildirim E, Anakok DA, Cete S. Design of a new biosensor platform for creatinine determination. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-021-05107-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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3
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Özbek MA, Yaşar A, Çete S, Er E, Erk N. A novel biosensor based on graphene/platinum nanoparticles/Nafion composites for determination of glucose. J Solid State Electrochem 2021. [DOI: 10.1007/s10008-021-04939-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Vernerová A, Kujovská Krčmová L, Melichar B, Švec F. Non-invasive determination of uric acid in human saliva in the diagnosis of serious disorders. Clin Chem Lab Med 2020; 59:797-812. [PMID: 33554551 DOI: 10.1515/cclm-2020-1533] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 11/12/2020] [Indexed: 11/15/2022]
Abstract
This review summarizes and critically evaluates the published approaches and recent trends in sample pre-treatment, as well as both separation and non-separation techniques used for the determination of uric acid (UA) in saliva. UA is the final product of purine nucleotide catabolism in humans. UA concentrations in biological fluids such as serum, plasma, and urine represent an important biomarker of diseases including gout, hyperuricemia, or disorders associated with oxidative stress. Previous studies reported correlation between UA concentrations detected in saliva and in the blood. The interest in UA has been increasing during the past 20 years from a single publication in 2000 to 34 papers in 2019 according to MEDLINE search using term "uric acid in saliva". The evaluation of salivary UA levels can contribute to non-invasive diagnosis of many serious diseases. Increased salivary UA concentration is associated with cancer, HIV, gout, and hypertension. In contrast, low UA levels are associated with Alzheimer disease, progression of multiple sclerosis, and mild cognitive impairment.
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Affiliation(s)
- Andrea Vernerová
- The Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic.,The Department of Clinical Biochemistry and Diagnostics, University Hospital, Hradec Králové, Czech Republic
| | - Lenka Kujovská Krčmová
- The Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic.,The Department of Clinical Biochemistry and Diagnostics, University Hospital, Hradec Králové, Czech Republic
| | - Bohuslav Melichar
- The Department of Oncology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - František Švec
- The Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
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Erol E, Yildirim E, Cete S. Construction of biosensor for hypoxanthine determination by immobilization of xanthine oxidase and uricase in polypyrrole-paratoluenesulfonate film. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04715-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Cete S, Ozyurt M, Yildirim E, Akin D. A novel biosensor with the use of polypyrrole–poly(sodium-4-styrenesulphonate) as a dopant in the determination of glucose. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00907-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Özer BO, Çete S. Development of a novel biosensor based on a polypyrrole–dodecylbenzene sulphonate (PPy–DBS) film for the determination of amperometric cholesterol. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:824-832. [DOI: 10.1080/21691401.2016.1178133] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Bayram Oğuz Özer
- Department of Chemistry, Institute of Science, Gazi University, Ankara, Turkey
| | - Servet Çete
- Department of Chemistry, Faculty of Science, Gazi University, Ankara, Turkey
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Xiong H, Zhou Y, Zhou Q, He D, Deng X, Sun Q, Zhang J. Nanocapsule assemblies as effective enzyme delivery systems against hyperuricemia. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:1557-66. [DOI: 10.1016/j.nano.2016.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 02/03/2016] [Accepted: 02/08/2016] [Indexed: 12/14/2022]
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Xia C, He J, Yuan G, Li Y, Li Q, Yu C. A switched catalysis qualified sealers capped one-step synthesis biocompatibility bimetallic scaffold film for Neu5Acα(2-6)Gal β MP Glycoside specific detection. Biosens Bioelectron 2016; 77:853-9. [PMID: 26516685 DOI: 10.1016/j.bios.2015.10.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/16/2015] [Accepted: 10/21/2015] [Indexed: 11/15/2022]
Abstract
In this work, a novel label-free biosensor was designed for the sensitive and selective determination of Neu5Acα(2-6)Gal β MP Glycoside using AuPt-PPy(polypyrrole) conductive nanocomposite film as the sensor platform. The introduced AuPt-PPy nanocomposite provided a large surface area for the immobilization of Sambucus nigra agglutinis (SNA) through a coupling agent for specifically recognizing analytes and exhibited high electrocatalytic activity toward the reduction of hydrogen peroxide (H2O2) as an analytical signal. Subsequently, to block the non-specific sites of the modified electrode, GOx was employed instead of the usual sealers. Most importantly, in the presence of glucose, these localized GOx further enhanced the electrochemical signal, which was achieved by the efficient catalysis of glucose. This study is the first that demonstrates the specific detection of Neu5Acα(2-6)Gal β MP Glycoside using AuPt-PPy as the electrocatalytic. Under optimal conditions, the electrochemical biosensor exhibited a wide linear range of 0.01 pgmL(-1)-800 ngmL(-1) with a low detection limit of 0.003 pgmL(-1) (S/N=3), due to the affinity between SNA and Neu5Acα(2-6)Gal β MP Glycoside. Therefore, the co-catalysis signal amplification approach has considerable potential in clinical applications and is suitable for the quantification of other biomarkers.
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Affiliation(s)
- Chunyong Xia
- Institute of Life Science and School of Public Health, Chongqing Medical University, Box 174#, No. 1 Yixueyuan Road, Chongqing 400016, PR China
| | - Junlin He
- Institute of Life Science and School of Public Health, Chongqing Medical University, Box 174#, No. 1 Yixueyuan Road, Chongqing 400016, PR China
| | - Guolin Yuan
- Institute of Life Science and School of Public Health, Chongqing Medical University, Box 174#, No. 1 Yixueyuan Road, Chongqing 400016, PR China
| | - Yuliang Li
- Institute of Life Science and School of Public Health, Chongqing Medical University, Box 174#, No. 1 Yixueyuan Road, Chongqing 400016, PR China
| | - Qingying Li
- Institute of Life Science and School of Public Health, Chongqing Medical University, Box 174#, No. 1 Yixueyuan Road, Chongqing 400016, PR China
| | - Chao Yu
- Institute of Life Science and School of Public Health, Chongqing Medical University, Box 174#, No. 1 Yixueyuan Road, Chongqing 400016, PR China.
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Tunç AT, Aynacı Koyuncu E, Arslan F. Development of an acetylcholinesterase–choline oxidase based biosensor for acetylcholine determination. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1659-64. [DOI: 10.3109/21691401.2015.1080167] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Dolmaci N, Çete S, Arslan F, Yaşar A. An amperometric biosensor for fish freshness detection from xanthine oxidase immobilized in polypyrrole-polyvinylsulphonate film. ACTA ACUST UNITED AC 2012; 40:275-9. [PMID: 22248304 DOI: 10.3109/10731199.2011.646410] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A new amperometric biosensor was developed for determining hypoxanthine in fish meat. Xanthine oxidase with pyrrole and polyvinylsulphonate was immobilized on the surface of a platinum electrode by electropolymerization. The determination of xanthine-hypoxanthine was performed by means of oxidation of uric acid liberated during the enzyme reaction on the surface of the enzyme electrode at + 0.30V (SCE). The effects of pH, substrate concentration, and temperature on the response of the xanthine-hypoxanthine biosensor were investigated. The linear working range of the enzyme electrode was 1.0 × 10(-7) -1.0 × 10(-3) M of the hypoxanthine concentration, and the detection limit was 1.0 × 10(-7)M. The apparent K(m(app)) and I(max) of the immobilized xanthine oxidase were found to be 0.0154 mM and 1.203 μA/mM, respectively. The best pH and temperature value for xanthine oxidase were selected as 7.75 and 25°C, respectively. The sensor was used for the determination of hypoxhantine in fish meat. Results show that the fish degraded very rapidly after seven days and the hypoxanthine amount was found to increase over days of storage.
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Muhammet SM, Cete S, Arslan F, Yaşar A. Amperometric cholesterol biosensors based on the electropolymerization of pyrrole and aniline in sulphuric Acid for the determination of cholesterol in serum. ACTA ACUST UNITED AC 2010; 37:273-8. [PMID: 19922167 DOI: 10.3109/10731190903356453] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A new amperometric cholesterol biosensor was prepared by immobilizing cholesterol oxidase by a glutaraldehyde crosslinking procedure on polypyrrole-polyaniline (ppy-pani) composite film on the surface of a platinum electrode. In order to prepare a biosensor for the determination of cholesterol, electropolymerization of pyrrole and aniline on Pt surface was performed with an electrochemical cell containing pyrrole and aniline in sulphuric acid by cyclic voltammetry between 0.0 and 0,7 V (vs.Ag/AgCl) at a scan rate of 50 mV upon Pt electrode. The amperometric determination is based on the electrochemical detection of H(2)O(2), which is generated in enzymatic reaction of cholesterol. The cholesterol determined by the oxidation of enzymatically generated H(2)O(2) at 0.7 V vs. Ag/AgCl. The optimized cholesterol oxidase biosensor displayed linear working range and a response time of 300 s. The effects of pH and temperature were investigated and optimum parameters were found to be 7.0, 25 degrees C, respectively. In addition to this, the stability and reproducibility of biosensor were tried. Operational stability of the proposed cholesterol biosensor was obtained by periodical measurements of the biosensor response. Biosensor at optimum activity conditions was used in 30 activity assays in one day to determine the operational stability. The results show that 82% of the response current was retained after 30 activity assays. The electrode was stored in a refrigerator at 4 degrees C after the measurements. The storage stability of the biosensor was determined by performing activity assays within 23 days. The results demonstrate that 60% of the response current was retained after 23 days. Preparing biosensor is used for the analysis of cholesterol in serum.
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Affiliation(s)
- Sinan M Muhammet
- Technical Vocational School of Higher Education, Gazi University, Ankara, Turkey.
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Preparation of a polypyrrole-polyvinylsulphonate composite film biosensor for determination of cholesterol based on entrapment of cholesterol oxidase. SENSORS 2009; 9:6435-45. [PMID: 22454593 PMCID: PMC3312452 DOI: 10.3390/s90806435] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2009] [Revised: 08/03/2009] [Accepted: 08/10/2009] [Indexed: 11/17/2022]
Abstract
In this paper, a novel amperometric cholesterol biosensor with immobilization of cholesterol oxidase on electrochemically polymerized polypyrrole-polyvinylsulphonate (PPy-PVS) films has been accomplished via the entrapment technique on the surface of a platinum electrode. Electropolymerization of pyrrole and polyvinylsulphonate on the Pt surface was carried out by cyclic voltammetry between -1.0 and +2.0 V (vs. Ag/AgCl) at a scan rate of 100 mV upon the Pt electrode with an electrochemical cell containing pyrrole and polyvinylsulphonate. The amperometric determination is based on the electrochemical detection of H(2)O(2) generated in the enzymatic reaction of cholesterol. Determination of cholesterol was carried out by the oxidation of enzymatically produced H(2)O(2) at 0.4 V vs. Ag/AgCl. The effects of pH and temperature were investigated and optimum parameters were found to be 7.25 and 35 °C, respectively. The storage stability and operational stability of the enzyme electrode were also studied. The results show that 32% of the response current was retained after 19 activity assays. The prepared cholesterol biosensor retained 43% of initial activity after 45 days when stored in 0.1 M phosphate buffer solution at 4 °C.
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Arora J, Nandwani S, Bhambi M, Pundir CS. Fabrication of dissolved O2 metric uric acid biosensor using uricase epoxy resin biocomposite membrane. Anal Chim Acta 2009; 647:195-201. [PMID: 19591705 DOI: 10.1016/j.aca.2009.06.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Revised: 04/06/2009] [Accepted: 06/01/2009] [Indexed: 11/26/2022]
Abstract
Uricase purified from 20-day-old leaves of cowpea was immobilized on to epoxy resin membrane with 80% retention of initial activity of free enzyme and a conjugation yield of 0.056 mg/cm(2). The uricase epoxy resin bioconjugate membrane was mounted over the sensing part of the combined electrode of 'Aqualytic' dissolved O(2) (DO) meter to construct a uric acid biosensor. The biosensor measures the depletion of dissolved O(2) during the oxidation of uric acid by immobilized uricase, which is directly proportional to uric acid concentration. The biosensor showed optimum response within 10-12s at a pH 8.5 and 35 degrees C. A linear relationship was found between uric acid concentration from 0.025 to 0.1 mM and O(2) (mg/l) consumed. The biosensor was employed for measurement of uric acid in serum. The mean value of uric acid in serum was 4.92 mg/dl in apparently healthy males and 3.11 mg/dl in apparently healthy females. The mean analytic recoveries of added uric acid in reaction mixture (8.9 and 9.8 mg/dl) were 93.6 +/- 2.34 and 87.18 +/- 3.17% respectively. The within and between batch CVs were < 6.5 and < 5.0%, respectively. The serum uric acid values obtained by present method and standard enzymic colorimetric method, showed a good correlation (r - 0.996) and regression equation being y - 0.984x + 0.0674. Among the various metabolites tested only, glucose (11%), urea (38%), NaCl (25%) and cholesterol (13%) and ascorbic acid (56%) caused decrease, while, MgSO(4) and CaCl(2) had no effect on immobilized enzyme. The enzyme electrode showed only 32% decrease during its use for 100 times over a period of 60 days at 4 degrees C.
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Affiliation(s)
- Jyoti Arora
- Biochemistry Research Laboratory, Department of Biochemistry & Genetics Biochemistry, M.D. University, Rohtak 124001, Haryana, India
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