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Article

Development of an Interdigitated Electrode-Based Disposable Enzyme Sensor Strip for Glycated Albumin Measurement

1
Joint Department of Biomedical Engineering, The University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC 27599, USA
2
Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
3
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Antonella Curulli
Molecules 2021, 26(3), 734; https://doi.org/10.3390/molecules26030734
Received: 19 December 2020 / Revised: 25 January 2021 / Accepted: 25 January 2021 / Published: 31 January 2021
Glycated albumin (GA) is an important glycemic control marker for diabetes mellitus. This study aimed to develop a highly sensitive disposable enzyme sensor strip for GA measurement by using an interdigitated electrode (IDE) as an electrode platform. The superior characteristics of IDE were demonstrated using one microelectrode of the IDE pair as the working electrode (WE) and the other as the counter electrode, and by measuring ferrocyanide/ferricyanide redox couple. The oxidation current was immediately reached at the steady state when the oxidation potential was applied to the WE. Then, an IDE enzyme sensor strip for GA measurement was prepared. The measurement of fructosyl lysine, the protease digestion product of GA, exhibited a high, steady current immediately after potential application, revealing the highly reproducible measurement. The sensitivity (2.8 nA µM−1) and the limit of detection (1.2 µM) obtained with IDE enzyme sensor strip were superior compared with our previously reported sensor using screen printed electrode. Two GA samples, 15 or 30% GA, corresponding to healthy and diabetic levels, respectively, were measured after protease digestion with high resolution. This study demonstrated that the application of an IDE will realize the development of highly sensitive disposable-type amperometric enzyme sensors with high reproducibility. View Full-Text
Keywords: interdigitated electrode; glycated albumin; fructosyl amino acid oxidase; point of care testing; disposable enzyme sensor; diabetes mellitus interdigitated electrode; glycated albumin; fructosyl amino acid oxidase; point of care testing; disposable enzyme sensor; diabetes mellitus
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MDPI and ACS Style

Hatada, M.; Loew, N.; Okuda-Shimazaki, J.; Khanwalker, M.; Tsugawa, W.; Mulchandani, A.; Sode, K. Development of an Interdigitated Electrode-Based Disposable Enzyme Sensor Strip for Glycated Albumin Measurement. Molecules 2021, 26, 734. https://doi.org/10.3390/molecules26030734

AMA Style

Hatada M, Loew N, Okuda-Shimazaki J, Khanwalker M, Tsugawa W, Mulchandani A, Sode K. Development of an Interdigitated Electrode-Based Disposable Enzyme Sensor Strip for Glycated Albumin Measurement. Molecules. 2021; 26(3):734. https://doi.org/10.3390/molecules26030734

Chicago/Turabian Style

Hatada, Mika, Noya Loew, Junko Okuda-Shimazaki, Mukund Khanwalker, Wakako Tsugawa, Ashok Mulchandani, and Koji Sode. 2021. "Development of an Interdigitated Electrode-Based Disposable Enzyme Sensor Strip for Glycated Albumin Measurement" Molecules 26, no. 3: 734. https://doi.org/10.3390/molecules26030734

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