A new treatment for the age-old scourge of cholera and perhaps a whole new type of antibiotic medicine may emerge from chemicals discovered in an Australian seaweed, new research results suggest.
Researchers at the University of New South Wales have found that compounds known as furanones – isolated from the seaweed Delisea pulchra – can prevent the bacteria that cause cholera from switching on their disease-causing mechanisms. It seems likely that furanones can have the same effect on many other bacteria, such as those that cause food poisoning and cystic fibrosis-related infections.
Furanones do not kill such microbes but simply "jam" their ability to send signals to each other. This means as well that their use is far less likely to create the drug-resistance problems that plague current anti-microbial treatments. "This is very exciting as these are the first antimicrobials of their type that have been shown to be effective," says Dr Diane McDougald, a Senior Research Associate at the UNSW Centre for Marine Biofouling and Bio-innovation. Dr McDougald is conducting the research in association with UNSWs Professor Staffan Kjelleberg and Professor Peter Steinberg. "The fact that furanones prevent bacterial communication means that they may be effective against a wide range of bacteria that have communication systems, such as the bacteria that cause golden Staph infections and tuberculosis," she says.
Dr. Diane McDougald | EurekAlert!
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
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