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Liv L, Özerdem Z. First DFT-supported point of care and novel electrochemical biosensing: Determination of yellow fever NS1 antibody in human plasma. Int J Biol Macromol 2024; 269:132169. [PMID: 38723801 DOI: 10.1016/j.ijbiomac.2024.132169] [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: 11/28/2023] [Revised: 01/10/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
In our study, we developed a point of care electrochemical biosensing platform based on the functionalized cysteine-positioned gold electrode to diagnose yellow fever disease from human plasma samples. The developed platform underwent characterization through diverse methods encompassing cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and density-functional theory. The capacitive interaction between yellow fever virus non-structural antigen and antibody gave a cathodic signal at approximately -260 mV, and increased in proportion to the amount of non-structural antibody. The created electrochemical biosensor has an ability to detect 96 ag/mL of the yellow fever non-structural antibody with an extensive analytical range varied from 0.1 fg/mL to 1 μg/mL. The interference effects of various substances that could be found in human plasma, and the performance of the method were examined from the point of recovery and relative standard deviation for human plasma samples; hereby, the results confirmed the unprecedented selectivity and accuracy of the proposed method.
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Affiliation(s)
- Lokman Liv
- Electrochemistry Laboratory, Chemistry Group, The Scientific and Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), 41470 Gebze, Kocaeli, Turkey.
| | - Zekihan Özerdem
- Electrochemistry Laboratory, Chemistry Group, The Scientific and Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), 41470 Gebze, Kocaeli, Turkey; Department of Chemistry, Bogazici University, 34342 Bebek, Istanbul, Turkey
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Suna G, Erdemir E, Liv L, Karakus AC, Gunturkun D, Ozturk T, Karakuş E. A novel thienothiophene-based "dual-responsive" probe for rapid, selective and sensitive detection of hypochlorite. Talanta 2024; 270:125545. [PMID: 38128280 DOI: 10.1016/j.talanta.2023.125545] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/08/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Hypochlorite/hypochlorous acid (ClO-/HOCl) is a biologically crucial reactive oxygen species (ROS), produced in living organisms and has a critical role as an antimicrobial agent in the natural defense system. However, when ClO- is produced excessively, it can lead to the oxidative damage of biomolecules, resulting in organ damage and various diseases. Therefore, it is imperative to have a straightforward, quick and reliable method for over watching the minimum amount of ClO- in different environments. RESULTS Herein, a new probe TTM, containing thienothiophene and malononitrile units, was developed for exceptionally selective and sensitive hypochlorite (ClO-) detection. TTM demonstrated a rapid "turn-on" fluorescence response (<30 s), naked-eye detection (colorimetric), voltammetric read-out with anodic scan, low detection limit (LOD = 0.58 μM and 1.43 μM for optical and electrochemical methods, respectively) and applicability in detecting ClO- in real water samples and living cells. SIGNIFICANCE AND NOVELTY This study represents one of the rare examples of a small thienothiophene-based molecule for both optical and electrochemical detections of ClO- in an aqueous medium.
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Affiliation(s)
- Garen Suna
- Organic Chemistry Laboratory, Chemistry Group, The Scientific & Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), 41470, Gebze, Kocaeli, Turkey; Department of Chemistry, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Eda Erdemir
- Organic Chemistry Laboratory, Chemistry Group, The Scientific & Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), 41470, Gebze, Kocaeli, Turkey; Department of Chemistry, Faculty of Science, Istanbul University, 34134, Beyazit, Istanbul, Turkey
| | - Lokman Liv
- Electrochemistry Laboratory, Chemistry Group, The Scientific & Technological Research Council of Turkey National Metrology Institute, (TUBITAK UME), 41470, Gebze, Kocaeli, Turkey
| | - Aysenur Cataler Karakus
- Organic Chemistry Laboratory, Chemistry Group, The Scientific & Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), 41470, Gebze, Kocaeli, Turkey
| | - Dilara Gunturkun
- Department of Chemistry, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Turan Ozturk
- Organic Chemistry Laboratory, Chemistry Group, The Scientific & Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), 41470, Gebze, Kocaeli, Turkey; Department of Chemistry, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.
| | - Erman Karakuş
- Organic Chemistry Laboratory, Chemistry Group, The Scientific & Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), 41470, Gebze, Kocaeli, Turkey.
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Özer M, Levent A. Application of eco‐friendly disposable pencil graphite sensor for electrochemical evaluation and determination of podophyllotoxin using in cancer treatment. ChemistrySelect 2024; 9. [DOI: https:/doi.org/10.1002/slct.202305100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 02/16/2024] [Indexed: 07/01/2024]
Abstract
AbstractA sensitive, simple and selective voltammetric method was developed for the quantification of plant‐derived podophyllotoxin, which is included in antineoplastic drugs, using a disposable pencil graphite electrode. Using the square‐wave voltammetry technique, podophyllotoxin gave a very good voltammetric response at +1.24 V (vs. Ag/AgCl) potential (at 0.0 V and after 60 s pre‐concentration) in Britton Robinson (pH 4.0) media. This procedure was used to detection the compound in the concentration range of 12.4–299.5 nM with a limit of detection to 2.62 nM (1.08 μg L−1). The proposed method has been successfully applied to human urine samples.
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Affiliation(s)
- Mehmet Özer
- Batman University Faculty of Sciences and Arts Department of Chemistry 72100 Batman Turkey
| | - Abdulkadir Levent
- Batman University Faculty of Sciences and Arts Department of Chemistry 72100 Batman Turkey
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Liv L, Portakal M, Çukur MS, Topaçlı B, Uzun B. Electrocatalytic Determination of Uric Acid with the Poly(Tartrazine)-Modified Pencil Graphite Electrode in Human Serum and Artificial Urine. ACS OMEGA 2023; 8:34420-34430. [PMID: 37780010 PMCID: PMC10535258 DOI: 10.1021/acsomega.3c02561] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023]
Abstract
A novel electrocatalytic sensing strategy was built for uric acid (UA) determination with an exceptionally developed poly(tartrazine)-modified activated pencil graphite electrode (pTRT/aPGE) in human serum and artificial urine. The oxidation signal of UA at 275 mV in pH 7.5 phosphate buffer solution served as the analytical response. Cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy were used to characterize the sensing platform, which was able to detect 0.10 μM of UA in the ranges of 0.34-60 and 70-140 μM. The samples of human serum and artificial urine were analyzed by both the pTRT/aPGE and the uricase-modified screen-printed electrode. The results were statistically evaluated and compared with each other within the confidence level of 95%, and no significant difference between the results was found.
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Affiliation(s)
- Lokman Liv
- Electrochemistry
Laboratory, Chemistry Group, The Scientific
and Technological Research Council of Turkey, National Metrology Institute,
(TUBITAK UME), 41470 Gebze, Kocaeli, Turkey
| | - Merve Portakal
- Electrochemistry
Laboratory, Chemistry Group, The Scientific
and Technological Research Council of Turkey, National Metrology Institute,
(TUBITAK UME), 41470 Gebze, Kocaeli, Turkey
- Faculty
of Technology, Department of Biomedical Engineering, Pamukkale University, 20160 Denizli, Turkey
| | - Meryem Sıla Çukur
- Electrochemistry
Laboratory, Chemistry Group, The Scientific
and Technological Research Council of Turkey, National Metrology Institute,
(TUBITAK UME), 41470 Gebze, Kocaeli, Turkey
- Faculty
of Technology, Department of Biomedical Engineering, Kocaeli University, İzmit, 41380 Kocaeli, Turkey
| | - Beyza Topaçlı
- Electrochemistry
Laboratory, Chemistry Group, The Scientific
and Technological Research Council of Turkey, National Metrology Institute,
(TUBITAK UME), 41470 Gebze, Kocaeli, Turkey
- School
of Engineering, Department of Biomedical Engineering, TOBB University of Economics and Technology, 06560 Ankara, Turkey
| | - Berkay Uzun
- Electrochemistry
Laboratory, Chemistry Group, The Scientific
and Technological Research Council of Turkey, National Metrology Institute,
(TUBITAK UME), 41470 Gebze, Kocaeli, Turkey
- Faculty
of Technology, Department of Biomedical Engineering, Kocaeli University, İzmit, 41380 Kocaeli, Turkey
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