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New way to halt excessive inflammation

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London, March 5 (IANS) Researchers have discovered a new way to ‘put the brakes’ on excessive inflammation by regulating a type of white blood cell that is critical for the immune system.

The study, published in the journal Nature Communications, indicates that the discovery has the potential to protect the body from unchecked damage caused by inflammatory diseases.

“Excessive inflammation is a prominent feature of many diseases such as multiple sclerosis, arthritis and inflammatory bowel diseases,” said researcher Claire McCoy from RCSI University.

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“Through our discovery, we may be able to develop novel therapeutics for the treatment of inflammatory disease and ultimately improve the quality of life for people with these conditions,” McCoy added.

When immune cells (white blood cells) in our body called macrophages are exposed to potent infectious agents, powerful inflammatory proteins known as cytokines are produced to fight the invading infection, the team said.

However, if these cytokine levels get out of control, significant tissue damage can occur, they added.

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The researchers have found that a protein called Arginase-2 works through the energy source of macrophage cells, known as mitochondria, to limit inflammation.

Specifically they have shown for the first time that Arginase-2 is critical for decreasing a potent inflammatory cytokine called IL-1.

This discovery could allow researchers to develop new treatments that target the Arginase-2 protein and protect the body from unchecked damage caused by inflammatory diseases, the team said.

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–IANS

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