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Researchers uncover link between immune function and osteoarthritic pain and progression

The immune system plays a pivotal role in the amount of pain and disease progression experienced by patients with osteoarthritis (OA), McMaster University researchers have found.

This discovery could lead to new strategies for improving joint pain management and immune function in older adults with arthritis.

The study, published in the medical journal Osteoarthritis and Cartilage, found that monocytes, the white blood cells necessary to regulate immune responses, were more activated and pro-inflammatory in women with osteoarthritis, and that elevated inflammation and body mass index were associated with this increased activation.

When compared with a control group, this combination created a perfect storm – one that was found to increase the pain and progression of knee osteoarthritis. The study involved 22 women with OA, and 22 women of the same age without OA.

“It is the first study, to our knowledge, to specifically characterize changes in circulating monocytes in individuals with OA compared to healthy women,” said senior author Dawn Bowdish, a professor of pathology and molecular medicine at McMaster, and member of the McMaster Institute for Research on Aging.

“We know that changes in monocytes contribute to the development of chronic inflammatory conditions. If we can target these monocytes in OA, we may be able to slow down disease progression or decrease the risk of other chronic inflammatory diseases,” she said.

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Researchers uncover link between immune function and osteoarthritic pain and progression

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