Arthritis Risk Set Before Birth
Oxford researchers discover joints vulnerable to rheumatoid arthritis due to differences in tissue structure and cell populations, sparking new hopes for early intervention and treatment.
Researchers at the University of Oxford have made a significant discovery that could change our understanding of rheumatoid arthritis. The study, published in Nature Immunology, found evidence that some joints may be more vulnerable to the disease before birth due to differences in tissue structure and cell populations.
The study compared proximal interphalangeal (PIP) joints and distal interphalangeal (DIP) joints, and found that PIP joints had a larger volume of synovial tissue and contained more PI16-positive (PI16+) fibroblasts than DIP joints. These differences were already present before birth, suggesting that the local tissue environment of a joint may influence whether inflammation takes hold later in life.
Rheumatoid arthritis is an autoimmune condition in which the immune system attacks the synovium, the tissue that lines the joints, producing pain, swelling, and stiffness. The disease repeatedly attacks certain joints while leaving others largely untouched, and this study could help explain why.
The study's findings were led by researchers at the Kennedy Institute, including Christopher Buckley, Kennedy Professor of Translational Rheumatology at the University of Oxford. The discovery could have significant implications for our understanding of the disease and how it develops.
## Why it matters The study's findings suggest that the architecture of each joint may help determine where arthritis eventually takes hold. This could help explain why rheumatoid arthritis targets specific joints, and why some joints are more prone to the disease than others. The discovery could also lead to new avenues for research and treatment, and could potentially help doctors to identify individuals who are at risk of developing the disease.
The study's results are significant because they suggest that the vulnerability to rheumatoid arthritis may begin before birth. This challenges the traditional view that the disease is solely caused by immune system dysfunction, and highlights the importance of considering the role of joint biology in the development of the disease.
