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Kang C, Cho S, Shin H, Heller A. An Oxidizable Anion-Excluding Polymer-Overlayer for Oxygen Electrodes. ELECTROANAL 2009. [DOI: 10.1002/elan.200900310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gamburzev S, Atanasov P, Wilkins E. Oxygen Electrode With Pyrolyzed CoTMPP Catalyst: Application in Glucose Biosensor. ANAL LETT 2006. [DOI: 10.1080/00032719708001797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Yamaguchi M, Deguchi M, Wakasugi J. Flat-chip microanalytical enzyme sensor for salivary amylase activity. Biomed Microdevices 2006; 7:295-300. [PMID: 16404507 DOI: 10.1007/s10544-005-6071-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
It is considered that measurement of salivary alpha-amylase activity is a useful tool for evaluating the sympathetic nervous system. The purpose of this research is to demonstrate a new design of a flat-chip microanalytical enzyme sensor (flat-chip sensor) for salivary amylase activity as a Micro-Electro-Mechanical Systems (MEMS), which may be used for wearable analytical systems. To meet this purpose, the biosensor needs to be miniaturized and to possess high-sensitivity. A pre-column and a flat-enzyme electrode were incorporated in a flow cell of volume 25.7 ml. In order to miniaturize the flow cell, two enzymatic membranes containing maltose phosphorylase obtained from Enterococcus hirae (MP membrane) and glucose oxidase and peroxidase (GOD-POD membrane) were immobilised on the same planar surface. As a result, a flat-chip sensor incorporating a flow cell as small as a C battery was produced. The optimum conditions of three parameters of the fabricated flat-chip sensor, the immobilising method of the enzymatic membrane, dropping volume of the mixed enzymatic solution and flow rate of the sample solution, were examined. An analytical system for 0-190 kU/l amylase activity with R(2) of 0.97 was fabricated with a sample volume of 50 microl. This research indicates the possibility of a wearable biosensor for continuous monitoring of salivary amylase activity.
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Affiliation(s)
- Masaki Yamaguchi
- Department of Material Systems Engineering and Life Science, Faculty of Engineering, Toyama University, 3190 Gofuku, Toyama 930-8555, Japan.
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Chen Z, Hayashi K, Iwasaki Y, Kurita R, Niwa O, Sunaawa K. On-Line Monolithic Enzyme Reactor Fabricated by Sol-Gel Process for Elimination of Ascorbic Acid While Monitoring Dopamine. ELECTROANAL 2005. [DOI: 10.1002/elan.200303042] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Affiliation(s)
- Hitoshi MUGURUMA
- Department of Electronic Engineering, Shibaura Institute of Technology
| | - Atsunori HIRATSUKA
- Laboratory of Advanced Bioelectronics, National Institute of Advanced Industrial Science and Technology
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Determination of glutamate pyruvate transaminase activity in clinical specimens using a biosensor composed of immobilized l-glutamate oxidase in a photo-crosslinkable polymer membrane on a palladium-deposited screen-printed carbon electrode. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(03)00093-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Collins A, Mikeladze E, Bengtsson M, Kokaia M, Laurell T, Csöregi E. Interference Elimination in Glutamate Monitoring with Chip Integrated Enzyme Microreactors. ELECTROANAL 2001. [DOI: 10.1002/1521-4109(200104)13:6<425::aid-elan425>3.0.co;2-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Sugawara K, Takano T, Fukushi H, Hoshi S, Akatsuka K, Kuramitz H, Tanaka S. Glucose sensing by a carbon-paste electrode containing chitin modified with glucose oxidase. J Electroanal Chem (Lausanne) 2000. [DOI: 10.1016/s0022-0728(00)00004-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yang Q, Atanasov P, Wilkins E. A novel amperometric transducer design for needle-type implantable biosensor applications. ELECTROANAL 1997. [DOI: 10.1002/elan.1140091607] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
This article reviews the development of glucose monitoring techniques and approaches during the last decade. The predominance of the electrochemical measuring principles reported in the literature makes them a focus of this work. Biosensors are still in the main stream of the research interest of most teams due to their high selectivity for glucose determination. Systematization and classification of the glucose monitoring principles and types of glucose sensors is shown. The review gives a brief description of the basic operational principles of the most popular types of glucose biosensors, providing an enhanced bibliography of the original works of the main groups in establishing or significantly contributing to the development of the particular type of glucose biosensor. Different design approaches are overviewed including needle-type sensors, sensors for chronical implantation and the combination of the glucose biosensors with microdialysis sampling technique. The authors approach for replacing of the spent enzyme and thus recharging the sensor in situ while implanted is widely discussed. This approach provides a way to increase the lifespan of the system and ultimately, it could lead to rare transcutaneous interventions for refilling of the implanted sensor.
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Affiliation(s)
- E Wilkins
- Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque 87131, USA
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Atunasov P, Gamburzev S, Wiikins E. Needle-type glucose biosensors based on a pyrolyzed cobalt-tetramethoxy-phenylporphyrin catalytic electrode. ELECTROANAL 1996. [DOI: 10.1002/elan.1140080212] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Min RW, Nielsen J, Villadsen J. On-line monitoring of glucose and penicillin by sequential injection analysis. Anal Chim Acta 1996. [DOI: 10.1016/0003-2670(95)00523-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yang S, Atanasov P, Wilkins E. Glucose biosensors based on oxygen electrode with sandwich-type membranes. Ann Biomed Eng 1995; 23:833-9. [PMID: 8572433 DOI: 10.1007/bf02584482] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A glucose biosensor based on an amperometric oxygen electrode has been developed. Polycarbonate and Silastic membranes were assembled (glued together) to form a multilayer sandwich glucose diffusion barrier. The effects of the glue layer composition and thickness of the Silastic membrane on sensor response parameters have been investigated in order to optimize the sensor. The parameters measured were the sensitivity, the concentration range of the linear dependence of the sensor response to glucose, and the long-term operation time. The sensors with the sandwich-type glucose diffusion membrane (Silastic membrane prepared from 20% Silastic suspension, glue layer prepared from polyurethane, 0.5 w/v % in ThF solution and standard polycarbonate membrane) demonstrated linearity of response up to 520 mg/dl glucose at 25 degrees C and up to 400 mg/dl at 37 degrees C. These sensor showed good reproducibility of response without significant interference effects (from 1 to 5% of the background current value). The long-term continuous operational time of the sensors was over 40 days at 37 degrees C, and over 60 days at 25 degrees C.
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Affiliation(s)
- S Yang
- Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque 87131-1341, USA
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Vaidya R, Atanasov P, Wilkins E. Effect of interference on the performance of glucose enzyme electrodes using Nafion coatings. Med Eng Phys 1995; 17:416-24. [PMID: 7582325 DOI: 10.1016/1350-4533(94)00006-u] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The negatively charged perfluorinated ionomer Nafion was used as a coating on hydrogen peroxide detecting platinum electrode as well as on a polycarbonate diffusion membrane in the construction of a glucose amperometric enzyme electrode. The current response of these electrodes to hydrogen peroxide, ascorbic acid, acetaminophen, uric acid and glucose was studied and the coating procedure was optimized. It was confirmed that the Nafion coating prevents interference by anionic substances such as ascorbic acid and uric acid, and decreases acetaminophen interference. In this regard it was shown that coating the glucose diffusion membrane (polycarbonate) was more effective than coating the platinum wire itself, because of the prevention of the homogeneous redox reaction of the interference species with hydrogen peroxide, as well as the additional diffusional resistance to the glucose flux. The glucose levels in serum samples were estimated and the stability of the enzyme electrodes during continuous operation in serum was studied. An enzyme electrode with constant sensitivity of ca. 1 microA/mM and a linear range of up to 15 mM, unaffected by contact with serum, is reported.
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Affiliation(s)
- R Vaidya
- Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque 87131, USA
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Pantano P, Kuhr WG. Enzyme-modified microelectrodes for in vivo neurochemical measurements. ELECTROANAL 1995. [DOI: 10.1002/elan.1140070502] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Gamburzev S, Atanasov P, Wilkins E. Glucose Biosensor Based on Oxygen Electrode Part III: Long-Term Performance of the Glucose Biosensor in Blood Plasma at Body Temperature. ANAL LETT 1995. [DOI: 10.1080/00032719508000334] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Csöregi E, Gorton L, Marko-Varga G. Amperometric microbiosensors for detection of hydrogen peroxide and glucose based on peroxidase-modified carbon fibers. ELECTROANAL 1994. [DOI: 10.1002/elan.1140061103] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Atanasov P, Wilkins E. Glucose Biosensor Based on Oxygen Electrode. Part II: Long-Term Operational Stability of the Rechargeable Glucose Biosensor. ANAL LETT 1993. [DOI: 10.1080/00032719308017453] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Chen CY, Tamiya E, Ishihara K, Kosugi Y, Su YC, Nakabayashi N, Karube I. A biocompatible needle-type glucose sensor based on platinum-electroplated carbon electrode. Appl Biochem Biotechnol 1992; 36:211-26. [PMID: 1288410 DOI: 10.1007/bf02921780] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A biocompatible needle-type glucose sensor with a 3-electrode configuration was constructed. A platinum-electroplated carbon stick was used as the working electrode, Ag/AgCl as the reference electrode, and a disposable hypodermic needle made of stainless steel as the counter electrode. A Nafion membrane, an immobilized glucose oxidase (GOD) membrane, and a biocompatible membrane with diffusion-limiting effect were coated successively onto the working electrode. The sensor showed a rapid response (< 120 s in batch operation), good reproducibility (RE < 3%), good stability (over 36 h in control serum), a wide dynamic range (5-600 mg/dL glucose), and superior biocompatibility. It was used to determine glucose in serum. The data obtained from the sensor showed good agreement with that from a clinical autoanalyzer (R > 0.95).
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Affiliation(s)
- C Y Chen
- Research Center for Advanced Science and Technology, University of Tokyo, Japan
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