Madam Therapeutics

The nose knows how to kill MRSA….

shutterstock_172371818_16x9A new antibiotic was right under our noses — or rather, in them. Produced by a bacterium living in the human nose, the molecule kills the potentially deadly methicillin-resistant Staphylococcus aureus (MRSA) in mice and rats.

Staphylococcus aureus resides in the noses of 1 in 3 people without causing a problem. MRSA — an S. aureus strain resistant to many antibiotics — is found in 2 in 100. In a small percentage of cases, the bacterium escapes to the bloodstream, causing infection. MRSA kills 11,000 people annually in the United States alone.

The potential new soldier in the fight against MRSA is a molecule called lugdunin produced by the bacterium Staphylococcus lugdunensis, report Andreas Peschel and colleagues at the University of Tübingen, Germany, on 27 July in Nature. See for more

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