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A simple protein has been found to rebuild joints after injuries, accidents, or even onset of osteoarthritis.<\/p>\nA simple protein has been found to rebuild joints after injuries, accidents, or even onset of osteoarthritis.<\/p>\n
This was proven in a new study in Science Translational Medicine<\/em>.<\/p>\n When people injure a joint\u2014whether from sports, accidents, or repetitive movement\u2014it often results in something called an osteochondral defect.<\/p>\n That means damage to both the cartilage and the bone just underneath it.<\/p>\n These injuries are often harmful because cartilage doesn\u2019t heal easily. And if it doesn’t heal properly, it leads to osteoarthritis.<\/p>\n Worst of all, there is currently no real way to repair damaged joints. Arthritis treatments merely manage the symptoms.<\/p>\n So, if there is a way to stop that process before it starts\u2014or even reverse joint damage once it\u2019s underway\u2014that\u2019s a big deal.<\/p>\n And this is what the scientists at Queen Mary University of London wanted to find.<\/p>\n The team had noticed something interesting in their previous research:<\/p>\n People with less of the protein agrin in their joints tended to have more severe osteoarthritis.<\/p>\n This observation made them wonder: could it help to add agrin to damaged joints?<\/p>\n They started their journey with mice.<\/p>\n They created a serious joint injury that normally wouldn\u2019t heal on its own\u2014and injected the site with agrin.<\/p>\n And their intuitions proved to be right.<\/em><\/p>\n 2.\tAgrin activated one healing pathway (CREB) while blocking another that usually limits cartilage growth (WNT signaling).<\/p>\n 3.\tThis process turned these progenitor cells into new, stable cartilage cells called chondrocytes. The new cartilage closely resembled healthy joint tissue.<\/p>\n 4.\tAgrin also helped restore the bone underneath the cartilage.<\/p>\n 5.\tAmazingly, it kept working long after the injection\u2014promoting lasting repair.\n<\/dd>\n<\/dl>\n They then tried the same technique in sheep, using a collagen gel containing agrin.<\/p>\n This time, they saw not only joint healing, but also improvements in movement and physical activity\u2014signs that the animals were truly recovering.<\/p>\n The researchers have now launched a new company to bring this treatment to human patients.<\/p>\n And the goal isn\u2019t just repair\u2014it\u2019s prevention.<\/p>\n Half of all joint injuries eventually lead to osteoarthritis.<\/p>\n But if agrin can fix the damage before arthritis develops, it could halt that downward spiral.<\/p>\n\n