Denver Post: Researchers from Emory University and the University of Iowa found that extracts from the Brazilian peppertree, which traditional healers in the Amazon have used for hundreds of years to treat skin and soft-tissue infections, have the power to stop methicillin-resistant Staphylococcus aureus (MRSA) infections in mice. by Lena H. Sun via The Washington Post
The study was published in Nature’s Scientific Reports.
'Cassandra Quave, an Emory University scientist who studies how indigenous people use plants in healing practices, said researchers pulled apart the chemical ingredients of the berries and tested them in mice infected with these superbug strains. The mice developed skin lesions where the bacteria were injected. The researchers then injected some mice with the pepper extracts, and their lesions shrunk. Instead of destroying the bacteria, the ingredients in the fruit weakened the bacteria by preventing them from producing the toxins it uses as weapons to damage tissue. The extracts from the fruit repress a gene that allows the bacterial cells to communicate with one another.
'“It weakens the bacteria so the mouse’s own defenses work better” to clear the infection, she said. The plant extracts prevented the formation of skin lesions in mice injected with MRSA, but didn’t harm the skin tissues or the normal, healthy bacteria found on skin.'