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New compound overcomes drug-resistant Staph infection in mice
Date:1/7/2013

CHAMPAIGN, lll. Researchers have discovered a new compound that restores the health of mice infected with methicillin-resistant Staphylococcus aureus (MRSA), an otherwise dangerous bacterial infection. The new compound targets an enzyme not found in human cells but which is essential to bacterial survival.

The research team, led by scientists at the University of Illinois and the University of California, San Diego, reports the new findings in the Proceedings of the National Academy of Sciences. The team discovered and developed several compounds that are promising leads for antibacterial drug development, and the most potent was tested in mice infected with MRSA.

The rise of antibiotic-resistant bacterial infections is a global public health problem, said U. of I. chemistry professor Eric Oldfield, who led the research with UC San Diego professor Andrew McCammon.

"There's an urgent need for more antibiotics because of drug resistance," Oldfield said. "There are, for example, completely drug-resistant strains of tuberculosis. None of the drugs work against these strains of tuberculosis and so, if you get it, you die."

Other infections, such as gonorrhea, which once were easily cured with antibiotics, also are becoming resistant to treatment, Oldfield said. "And Staph itself actually kills more people in the U.S. than does HIV/AIDS."

To begin the study, McCammon and his colleagues at UC San Diego used computer simulations to look for potential chinks in the armor of a bacterial enzyme known as FPPS that aids in bacterial cell wall formation. The researchers then screened libraries of small molecules to identify some that might target those sites and interrupt the activity of FPPS. Oldfield's team tested some
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Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

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