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Beer Science

Vicious Cycle Revealed: How Alcohol Helps Gut Bacteria Attack Your Liver (sciencealert.com) 31

ScienceAlert reports: It's no secret that excessive alcohol consumption damages the liver, but a new study reveals a previously unknown vicious cycle that makes that damage worse. Chronic alcohol use makes it easier for bacteria to leak out of the gut and migrate to the liver, causing further harm.

The new study, led by scientists at the University of California San Diego, examined human liver biopsies as well as mouse models of alcohol-associated liver disease. The team found that chronic alcohol use impaired the production of a cellular signaling protein called mAChR4 in the small intestine. Lower levels of this protein were found to interfere with the formation of what are called goblet cell-associated antigen passages (GAPs). These specialized structures play a key role in teaching the immune system to respond to microbes, particularly those that escape the gut into other parts of the body, where they don't belong...

The researchers found that if they restored the function of mAChR4, GAPs would form again, which in turn repaired the immune system's response to wayward gut bacteria, reducing liver damage. This could be done either by using drugs to directly activate mAChR4 or by targeting related pathways that end up having the same effect...

The research was published in the journal Nature.

Vicious Cycle Revealed: How Alcohol Helps Gut Bacteria Attack Your Liver

Comments Filter:
  • mOthRA
  • Surprised they didn't list # of related deaths. Linked article is paywalled !

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