IBD may transform neurons in the gut, triggering pain even when inflammation is under control

A new study on inflammatory bowel disease (IBD) has uncovered a previously unknown pain pathway that may explain why patients experience pain even when inflammation is under control. Published in Science Immunology, the research suggests that changes in gut tissue consistency, making it stiffer and less elastic, continuously trigger pain signals in immune cells.

The findings, conducted by researchers at Shanghai's Ninth People's Hospital, indicate that a protein called Piezo1 in these immune cells plays a significant role in converting physical changes to pain signals. By observing mice with colitis, the researchers found that the quantity of Piezo1 in immune cells increased in these diseased mice, contributing to heightened pain sensitivity.

When the researchers blocked Piezo1 activity, they observed a cessation of pain hypersensitivity in both lab mice with colitis and healthy mice. The study opens up potential avenues for developing targeted treatments that can alleviate pain without suppressing the entire immune system. However, further research is needed to explore the role of cytokines and confirm these findings in human cells.