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Attacking Biofilms That Cause Chronic Infections

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A clever new imaging technique discovered at the University of California, Berkeley, reveals a possible plan of attack for many bacterial diseases, such as cholera, lung infections in cystic fibrosis patients and even chronic sinusitis, that form biofilms that make them resistant to antibiotics.

By devising a new fluorescent labeling strategy and employing super-resolution light microscopy, the researchers were able to examine the structure of sticky plaques called bacterial biofilms that make these infections so tenacious. They also identified genetic targets for potential drugs that could break up the bacterial community and expose the bugs to the killing power of antibiotics.
"Eventually, we want to make these bugs homeless," said lead researcher Veysel Berk, a postdoctoral fellow in the Department of Physics and the California Institute for Quantitative Biosciences (QB3) at UC Berkeley.

Berk and his co-authors, including Nobel laureate and former UC Berkeley professor Steven Chu, report their findings in the July 13 issue of the journal Science.
"In their natural habitat, 99.9 percent of all bacteria live as a community and attach to surfaces as biofilms; according to the National Institutes of Health, 80 percent of all infections in humans are related to biofilms," Berk said.
 
 

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