Functionalised ZnO-nanorod-based selective electrochemical sensor for intracellular glucose
Copyright 2010 Elsevier B.V. All rights reserved..
In this article, we report a functionalised ZnO-nanorod-based selective electrochemical sensor for intracellular glucose. To adjust the sensor for intracellular glucose measurements, we grew hexagonal ZnO nanorods on the tip of a silver-covered borosilicate glass capillary (0.7 microm diameter) and coated them with the enzyme glucose oxidase. The enzyme-coated ZnO nanorods exhibited a glucose-dependent electrochemical potential difference versus an Ag/AgCl reference microelectrode. The potential difference was linear over the concentration range of interest (0.5-1000 microM). The measured glucose concentration in human adipocytes or frog oocytes using our ZnO-nanorod sensor was consistent with values of glucose concentration reported in the literature; furthermore, the sensor was able to show that insulin increased the intracellular glucose concentration. This nanoelectrode device demonstrates a simple technique to measure intracellular glucose concentration.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2010 |
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Erschienen: |
2010 |
Enthalten in: |
Zur Gesamtaufnahme - volume:25 |
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Enthalten in: |
Biosensors & bioelectronics - 25(2010), 10 vom: 15. Juni, Seite 2205-11 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Asif, Muhammad H [VerfasserIn] |
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Anmerkungen: |
Date Completed 19.08.2010 Date Revised 21.11.2013 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.bios.2010.02.025 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM196509777 |
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520 | |a In this article, we report a functionalised ZnO-nanorod-based selective electrochemical sensor for intracellular glucose. To adjust the sensor for intracellular glucose measurements, we grew hexagonal ZnO nanorods on the tip of a silver-covered borosilicate glass capillary (0.7 microm diameter) and coated them with the enzyme glucose oxidase. The enzyme-coated ZnO nanorods exhibited a glucose-dependent electrochemical potential difference versus an Ag/AgCl reference microelectrode. The potential difference was linear over the concentration range of interest (0.5-1000 microM). The measured glucose concentration in human adipocytes or frog oocytes using our ZnO-nanorod sensor was consistent with values of glucose concentration reported in the literature; furthermore, the sensor was able to show that insulin increased the intracellular glucose concentration. This nanoelectrode device demonstrates a simple technique to measure intracellular glucose concentration | ||
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