API5

Norovirus Link to Crohn's Disease May Point to New Therapies

Retrieved on: 
Wednesday, October 5, 2022

Norovirus, a common infection that causes vomiting and diarrhea, is one of several viruses and bacteria thought to trigger disease onset in Crohn's patients, but the field does not know why.

Key Points: 
  • Norovirus, a common infection that causes vomiting and diarrhea, is one of several viruses and bacteria thought to trigger disease onset in Crohn's patients, but the field does not know why.
  • One clue emerged when past studies found that a certain genetic change (mutation) is present in most patients with the condition.
  • This protein adds an extra layer of protection against immune damage, so even those with the mutation can have a healthy gut.
  • However, the researchers also found that norovirus infection blocks T cell secretion of API5 in mice bred to have a rodent form of Crohn's disease, killing gut-lining cells in the process.