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New zinc discovery offers promise for cystic fibrosis patients - Video

Published On 2024-02-23T17:15:31+05:30  |  Updated On 24 Feb 2024 3:00 PM IST
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Overview

Researchers from the University of Queensland have discovered a fault in the bacteria-killing function of immune cells in people with Cystic Fibrosis and a way to reduce infections in people living with it.

Cystic Fibrosis is a chronic disease in which defects in the CFTR (cystic fibrosis transmembrane conductance regulator) channel cause a build-up of mucus in the lungs, airways and digestive system, leading to recurring infections. In people with Cystic Fibrosis, immune cells called macrophages are defective in a zinc pathway that the body uses to kill bacteria.

“One way that macrophages destroy bacteria is by poisoning them with toxic levels of metals such as zinc,” said Professor Matt Sweet,Molecular Bioscience Professor at UQ. “We discovered that the CFTR ion channel is crucial to the zinc pathway and because it doesn’t work properly in people with CF, it may partly explain why they’re more susceptible to bacterial infections.”

Around 70,000 to 100,000 people worldwide are affected by cystic fibrosis, which can reduce life expectancy to an average of 47 years.

The researchers have now identified a zinc transport protein that can restore the macrophages’ ability to kill bacteria when the CFTR protein is not working.

Professor Peter Sly at UQ’s Child Health Research Centre, a paediatric respiratory physician and key collaborator on the project, suggested discovering more about how CF affects the immune system is key to patient care.

“People with CF have a hyper inflammatory state in their airways and are very susceptible to bacterial infections but frequent treatment with antibiotics can often lead to antibiotic-resistant infections,” Professor Sly said.“Current treatments can restore many aspects of CFTR function but they don’t resolve or prevent lung infections so there is a need to restore immune functions.”

“Our goal now is to deliver this zinc transport protein to macrophages in people with CF with the expectation that it would reactivate their immune response and reduce infections,” concluded Professor Sweet.

Reference: DOI: 10.1073/pnas.2315190121

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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