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Cystic fibrosis bacteria could help fight back against antibiotic resistance
Date:5/27/2011

A bacteria which infects people with cystic fibrosis could help combat other antibiotic-resistant microbes, according to a team from Cardiff and Warwick Universities.

Continuous use of existing antibiotics means that resistant bacteria are now causing major health problems all over the world. New antibiotics are urgently needed to combat the emergence of multidrug-resistant bacteria such as the MRSA superbug.

Now a surprising source of hope has emerged in the form of Burkholderia, a group of bacteria which can cause severe lung infections in people with the genetic disorder cystic fibrosis. However, the Cardiff and Warwick team has now discovered antibiotics from Burkholderia are effective against MRSA and even other cystic fibrosis infecting bacteria.

Dr Eshwar Mahenthiralingam, of Cardiff University's School of Biosciences, Cardiff University, has been studying Burkholderia for the last decade. Using forensic fingerprinting tests to genetically identify the bacteria, Dr Mahenthiralingam's research group has tracked strains all over the world and helped develop guidelines to prevent it spreading.

By the summer of 2007, Dr Mahenthiralingam had built up a large collection of Burkholderia bacteria. He and his team then decided to screen them for antibiotics active against other bacteria, particularly drugs with the potential to kill other bacteria that infect cystic fibrosis patients. Over the next two years, Dr Mahenthiralingam's team discovered that around one quarter of Burkholderia bacteria have very strong antibiotic activity on multidrug-resistant pathogens such as MRSA. One particular strain, Burkholderia ambifaria, was found to produce two very potent antibiotics active on resistant bacteria, in particular Acinetobacter baumanii.

The chemical structures of the antibiotics, called enacyloxins, were determined by Professor Gregory Challis and Dr. Lijiang Song at the University of Warwick, demonstrating that the
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Contact: Dr. Eshwar Mahenthiralingam
MahenthiralingamE@cardiff.ac.uk
44-029-208-75875
Cardiff University
Source:Eurekalert

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