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Salmonella spreads by targeting cells in our gut, study shows

Researchers have found that the bacteria are able to change key cells that line the intestine, enabling the bugs to thrive.

By changing the make-up of these cells, the salmonella bacteria are able to cross the gut wall and infect vital organs, such as the kidneys and the liver.

Salmonella food poisoning commonly caused by eating undercooked poultry or eggs can lead to diarrhoea, fever and even death in young children.

Scientists say the study furthers our understanding of how bacterial infections occur and what enables them to spread.

The University of Edinburgh research found that the salmonella released a protein SopB changing the make-up of certain cells that line the gut. This causes a dramatic increase in cells called microfold or M cells.

The work, published in Cell Host & Microbe, reveals how once the salmonella produces large number of these cells it can then get through into the bloodstream, causing infection.

Lead researcher Dr Arvind Mahajan, from The Roslin Institute at the University of Edinburgh, said: "Bacteria have evolved sophisticated strategies to interact with and infect the host. This highlights yet another way in which microbes are able to transform cells into a type that suits their habitat."


Contact: Tara Womersley
University of Edinburgh

Page: 1

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