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Modifying surfaces by means of nanostructured reliefs to prevent the spread of bacteria
Date:7/20/2012

This release is available in Spanish.

Researchers at the Institute for Agrobiotechnology (a mixed research centre set up by the Public University of Navarre, the CSIC-National Scientific Research Council, and the Government of Navarre) are designing, by means of laser application, nanostructured reliefs on surfaces so that they acquire antibacterial properties and are more resistant to the formation of bacterial biofilms. The authors of the research say that in the preliminary tests carried out so far with the bacteria Staphylococcus aureus a reduction in the region of 65-70% has been confirmed in the adhesion of bacteria.

Apart from selecting the materials that best inhibit the adhesion of bacteria, the research is also looking into other aspects. These include the resistance to disinfectants of the bacteria adhered to nanostructured surfaces, how these surfaces retain their properties during prolonged use, or the behaviour of the bacteria on the surface of biomaterials. Topographical patterns that encourage the adhesion of bacteria will also be identified.

The authors anticipate that the applications coming out of this research will have an impact on a broad field from surgical material treated in advance using laser (prostheses, catheters) to water or aquaculture tanks with surfaces that prevent the adhesion of bacteria.

Preventing the creation of a bacterial biofilm

Bacterial biofilm is created when bacteria grow adhered to a surface and are surrounded by a matrix that they themselves produce and which makes them more resistant. "Bacteria," according to the head researcher Jaione Valle-Turrillas, "stick to any surface; it can be the skin, internal organs, surfaces of materials, etc. and they produce this biofilm, a kind of film that makes them more resistant to antibiotic treatments, disinfectants, etc." Bi
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Contact: Aitziber Lasa Iglesias
a.lasa@elhuyar.com
34-943-363-040
Elhuyar Fundazioa
Source:Eurekalert

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