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

Erscheinungsjahr:

2010

Erschienen:

2010

Enthalten in:

Zur Gesamtaufnahme - volume:25

Enthalten in:

Biosensors & bioelectronics - 25(2010), 10 vom: 15. Juni, Seite 2205-11

Sprache:

Englisch

Beteiligte Personen:

Asif, Muhammad H [VerfasserIn]
Ali, Syed M Usman [VerfasserIn]
Nur, Omer [VerfasserIn]
Willander, Magnus [VerfasserIn]
Brännmark, Cecilia [VerfasserIn]
Strålfors, Peter [VerfasserIn]
Englund, Ulrika H [VerfasserIn]
Elinder, Fredrik [VerfasserIn]
Danielsson, Bengt [VerfasserIn]

Links:

Volltext

Themen:

Glucose
IY9XDZ35W2
Journal Article
SOI2LOH54Z
Zinc Oxide

Anmerkungen:

Date Completed 19.08.2010

Date Revised 21.11.2013

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.bios.2010.02.025

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM196509777