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Light-induced delivery of nitric oxide eradicates drug-resistant bacteria
Date:5/30/2012

eated areas of the plates, showing that the nitric oxide easily penetrated through the agar layer. The amount of light used to activate the compound (100 milliWatts per square centimeter) is a typical light flux on a sunny day, Mascharak said.

The ability to control the release of nitric oxide using light is a significant advantage for clinical applications, he added. Tests showed that illumination of the material causes a steady release of nitric oxide, which can be stopped and started repeatedly by turning the light off and on. In the field, this could be accomplished by covering and uncovering the treated area.

"This is the first proof-of-concept to show that it works," Mascharak said. In the paper, the researchers concluded that "It is expected that application of these nitrosyl-containing porous materials to infected wounds followed by exposure to sunlight will bring about a rapid reduction of the pathogen load."

The researchers now hope to find collaborators who can help them with the next levels of testing needed to develop the clinical potential of their compound.


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Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

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