Antibacterial activity of fullerene water suspensions (nC60) is not due to ROS-mediated damage

Nano Letters
Delina Y LyonPedro J J Alvarez

Abstract

The cytotoxic and antibacterial properties of nC 60, a buckminsterfullerene water suspension, have been attributed to photocatalytically generated reactive oxygen species (ROS). However, in this work, neither ROS production nor ROS-mediated damage is found in nC 60-exposed bacteria. Furthermore, the colorimetric methods used to evaluate ROS production and damage are confounded by interactions between nC 60 and the reagents, yielding false positives. Instead, we propose that nC 60 exerts ROS-independent oxidative stress, thus reconciling conflicting results in the literature.

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Citations

Apr 26, 2013·Chemical Reviews·Nikolay O McHedlov-Petrossyan
Mar 12, 2011·Environmental Science & Technology·Christine Ogilvie HendrenMark R Wiesner
Jul 6, 2011·Environmental Science & Technology·Jee Yeon KimKara L Nelson
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