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Some arthritis may be caused by mosquito-borne viruses

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World

AUSTRALIA: Some therapies that are successful in treating RheumatoidArthritis (RA) may help improve treatment for people with debilitating mosquito-borne viral diseases, new research has found.

Infection caused by Chikungunya Virus (CHIKV) and Ross River Virus (RRV) are transmitted by mosquitoes and cause severe arthritis, muscle pain and fever.

“The disease caused by these viral infections bears several similarities with a form of auto-immune arthritis known as Rheumatoid Arthritis (RA),” said lead author Ali Zaid from Menzies Health Institute Queensland at Griffith University in Australia. “In severe RA, patients express high levels of an immune molecule called Interleukin-17 (IL-17), which is a target of new anti-arthritis drugs,” Zaid added.

In two new studies, published in the journals PLoS Pathogens and mBio, the researchers found IL-17 was also elevated during RRV and CHIKV infections. The team analysed serum samples from CHIKV-infected patients collected during the 2019 outbreak in northern Brazil.

They found that IL-17 levels were elevated in patients with acute disease, and more so in patients with chronic disease. Using an experimental mouse model of viral arthritis, they found that targeting IL-17 in virus-infected mice improved disease and reduced inflammation.

“This suggests that some therapies successful in treating RA could be of potential benefit to treat people with alphavirus disease,” Mostafavi said.

– IANS

Friday, March 11, 2022 – 01:00











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