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Receptor for H.pylori Identified in Stomach

everal microbial pathogens. Peek and his colleagues were curious as to whether DAF was also involved in H. pylori adherence. To do this, the researchers measured the number of H. pylori that bound to cells that either expressed or did not express DAF. They found that the bacteria do indeed adhere to cells with DAF. They also discovered that H. pylori induce DAF expression in cultured gastric epithelial cells and that mice lacking DAF develop attenuated stomach inflammation.

‘Our results indicate that H. pylori can co-opt a host protein as a receptor and that it can increase expression of this receptor in gastric epithelial cells,’ says Peek. ‘Further, absence of this receptor abolishes the inflammatory response that H. pylori induces in infected mice, suggesting that this receptor mediates H. pylori-induced injury in the stomach.’

These findings suggest that drugs that interfere with DAF binding could be used to prevent or treat peptic ulcer disease or distal gastric adenocarcinoma. These new drugs will be a welcome alternative to the current treatment for H. pylori infections which typically involves taking 3 to 4 medications over a 10 to 14 day period.


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