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How to avoid the bacterium that is a major cause of GI distress

Published On 2022-07-04T09:45:00+05:30  |  Updated On 4 July 2022 4:15 AM GMT
How to avoid the bacterium that is a major cause of GI distress

Overview

Scientists are working to clip the long, flexible appendages that enable the common bacterium Campylobacter jejuni to make its way from undercooked poultry and natural waterways into our intestinal tract where it makes millions of us sick each year.

Motility is the "magic bullet" for this bacterium which uses its long, thin, flexible arm-like flagella to maneuver the thick mucus in our gastrointestinal tract, power its way inside our intestinal cells, then wrap itself in a protective biofilm when threatened, said the researchers.

Researchers found that the nimble flagella, each longer than the bacterium's corkscrew-shape central body, don't just propel, they help grab and hold onto the cell the bacterium is working to infect and push inside, she says. These essential arms, sticky because of their natural sugar coating, also play a role in building biofilm that will protect it from harsh times like too little food or too much oxygen.

Researchers wanted to stop the pervasive bacterium, potentially with a safe molecule that could be given as soon as signs of infection appear, like diarrhea and fever, by targeting elements key to its amazing mobility. The enzyme CbrR, a so-called response regulator of the bacterium that enables it to assess its dynamic environment and make the adjustments it needs to survive.

They also took the first looks in this bacterium at the "second messenger" cyclic-di-GMP, which the enzyme produces and uses to make those adjustments; and most recently the amino acids that function as building blocks for the bacterium's long arms.

The researchers studied both the primary sugar Campylobacter uses to make slimy, protective biofilm and how the regulatory protein CsrA helps. They showed long ago that when CsrA is missing, Campylobacter can't move well, stick to each other or the gastrointestinal tract or make biofilm preventing sort of infection.

Reference: Putting the brakes on a bacterium that is a major cause of GI distress; MEDICAL COLLEGE OF GEORGIA AT AUGUSTA UNIVERSITY. 1st July 2022.

Speakers

Isra Zaman

B.Sc Life Sciences, M.Sc Biotechnology, B.Ed

Isra Zaman is a Life Science graduate from Daulat Ram College, Delhi University, and a postgraduate in Biotechnology from Amity University. She has a flair for writing, and her roles at Medicaldialogues include that of a Sr. content writer and a medical correspondent. Her news pieces cover recent discoveries and updates from the health and medicine sector. She can be reached at editorial@medicaldialogues.in.
bacterium GI distress magic bullet gastrointestinal tract diarrhea fever 
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