Gut bacteria can up death risk in severe Covid patients: Indian-origin scientist - New York News
by IANS | Updated Jan 10, 2023
According to Bhakti Patel, a pulmonary and critical care specialist at the University of Chicago Medicine, differences in gut microbiome are linked to increase in risk of death in Covid-19 patients with respiratory failure.
The findings could open a window for giving patients probiotic treatments containing the right strains of bacteria to produce protective metabolites.
One of the most troubling things during the pandemic was seeing patients who were relatively healthy come into the ICU and have completely different outcomes.
Some died, some ultimately recovered, and many recovered but were left with lasting complications.
"This tells me there is something else going on, and this study shows that there was some interaction between their microbiome health and how they recovered from their infection," said Patel in the paper published in Nature Communications.
Bhakti and Matthew Stutz, who was a critical care fellow at the time, wanted to study the gut microbiome of patients admitted to the ICU to see if it could help them understand why some patients recover and do well after discharge from the hospital, and others continue to suffer from debilitating complications.
"We were trying to tie together factors that might lend itself to a biologic explanation of why patients get disabled after surviving an ICU stay that goes beyond just the stuff that we do that could have complications," Patel added.
And then, the Covid pandemic hit.
Eric Pamer, the Donald F. Steiner Professor of Medicine and Director of the UChicago's Duchossois Family Institute (DFI), said the careful timing of sample collection was critical.
The DFI's core facilities detected several notable differences in the composition of the microbiome and metabolic products among these patients.
Patients who suffered progressive lung failure and died had more of a group of bacteria called proteobacteria than patients who recovered.
These patients also had lower levels of secondary bile acids, and less of a metabolite called "desaminotyrosine".
Conversely, the patients who improved had higher levels of secondary bile acids and more "desaminotyrosine".
It's still too early to tell, but according to Pamer, the microbiome and the metabolites contribute to recovery from severe respiratory infection.
January 10, 2023 Other New York
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