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Anti-HIV drugs may prevent complications from bacterial sepsis says study - Video

Published On 2024-01-20T09:15:40+05:30  |  Updated On 30 Jan 2024 4:34 PM IST
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Overview

Bacterial infections can lead to the formation of abscesses-pockets of dead cells and debris surrounded by inflammatory immune cells. Bacteria multiply within abscesses, causing more inflammation and further damage to surrounding tissues. In severe cases, these immune reactions spread across the body, resulting in life-threatening organ failure, or sepsis. But how these abscesses form and what can be done to prevent them were previously not well understood.

Using preclinical models, investigators from Brigham and Women’s Hospital, a founding member of the Mass General Brigham healthcare system, identified a key mechanism that may be driving liver abscess formation: a process known as reverse transcription, in which DNA is synthesized from RNA. Using RNA-sequencing, the researchers examined liver gene transcripts from mice infected with Escherichia coli. They found that abscess formation was associated with increased expression from endogenous retroviruses (ERVs), remnants of viruses that integrated into the mouse genome following past infections. The study is published in PNAS journal.

The authors hypothesized that DNA produced by ERVs can stimulate inflammatory immune responses, which damage surrounding cells and thus drive abscess development. If so, preventing the activity of the ERVs might prevent abscesses from forming. To test this, the team treated mice with a cocktail of reverse transcriptase inhibitors — antiretroviral drugs also used to manage HIV infections — to block ERV DNA expression. They found that a single dose of the inhibitor cocktail was enough to prevent abscess formation, if delivered quickly after bacterial infection.

“Our findings suggest that drugs used to treat HIV can be used to prevent inflammatory complications of bacterial sepsis,” said corresponding author Matthew Waldor, MD, PhD, of the Division of Infectious Diseases.

Reference: Researchers find anti-HIV drugs may prevent complications from bacterial sepsis; Proceedings of the National Academy of Science; DOI: 10.1073/pnas.2319162121

Speakers

Anshika Mishra

Anshika Mishra is a dedicated scholar pursuing a Masters in Biotechnology, driven by a profound passion for exploring the intersection of science and healthcare. Having embarked on this academic journey with a passion to make meaningful contributions to the medical field, Anshika joined Medical Dialogues in 2023 to further delve into the realms of healthcare journalism.

Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751
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