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Researchers identify mechanisms that lead to COVID-19-induced immune system dysfunction

 


  • Overcoming immune fatigue is a major goal in the development of new treatments for cancer and severe viral infections, according to a study published in the journal Nature Immunology.
  • Regarding the findings, the research team focused on the question of when and how T cells lose their function and become “depleted.”
  • Previously, it was thought that during severe infection, T cells slowly lost their function over a long period of time.

In a key study, Australian researchers identified a mechanism that causes the immune system to decline in response to severe viral infections such as HIV and Covid-19.

It is widely known that severe viral infections and cancer cause disorders of the immune system, including T cells, a process called “wasting” of the immune system.

Overcoming immune fatigue is a major goal in the development of new treatments for cancer and severe viral infections, according to a study published in the journal Nature Immunology.

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“This is especially exciting in the context of Covid-19, which is one of the reasons why we experience mild illness, while one of the major problems becomes severe,” said Daniel Utznyider, a research author at the University of Melbourne, Australia. It’s a discovery.”

Regarding the findings, the research team focused on the question of when and how T cells lose their function and become “depleted.”

Previously, it was thought that during severe infection, T cells slowly lost their function over a long period of time.

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However, this study shows that T cells can be compromised within just a few days. We also identified several new mediators of immune wasting that could be targets for new therapies.

“In mice, we examined both mild and overwhelming lymphocytic choriomeningitis virus infections, which serve as models for severe viral infections in humans early after the onset of disease, at the molecular and functional levels. We’ve identified a significant difference between the two,” said Utzschneider.

In response to overwhelming infectious diseases that are difficult to remove and can become chronic, the team downregulates their function in a matter of days, while the T cells that respond to weaker infections are highly susceptible. I was able to show that it continues to work.

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T cells are at the heart of cancer immunotherapy. Therefore, understanding how T cell function is impaired, they said, is central to improving these therapeutic approaches and applying them to other diseases such as viral infections.

“These findings are very exciting. Our data show that T cells can be engineered to improve their activity during the early stages of severe viral infection,” the study authors said.

See also:
Future Retail Driven by Kishore Biyani Avoids Defaults—Settles $14 Million Interest Payment to Investors
WHO has released specific mask guidance for children as they prepare to return to school.

Survey shows more than half of parents do not allow their children to go to school after resuming

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