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In a groundbreaking study, scientists have identified a key role for the protein IL-17 in skin aging. The researchers found that certain immune cells in the skin express high levels of IL-17 during aging, leading to an inflammatory state. By inhibiting IL-17, they noticed a delayed onset of aging symptoms, such as impaired hair follicle growth, percutaneous water loss, slow wound healing and genetic markers of aging.

A team of scientists from the Barcelona Biomedical Research Institute (IRB Barc

Rheumatoid arthritis (RA) is an autoimmune disease characterized by joint deterioration. Clinical outcomes in patients with active RA can be improved with the use of antirheumatic drugs such as methotrexate (MTX). Many patients rely on MTX to limit the devastating joint damage and functional disability typical of RA. Although the drug is a folate antagonist, its exact mechanism in patients with rheumatoid arthritis is largely unknown.

Previous research has shown that MTX also affects a type of w