RAGE regulates oxytocin transport into the brain.

Oxytocin, a nonapeptide hormone, has a key role in female reproductive functions as well as in social memory in the brain. In our recent article, we reported that oxytocin is transported from the peripheral blood into the brain by the receptor for advanced glycation end-products (RAGE) in endothelial cells at the blood−brain barrier. Additionally, we found that oral oxytocin is absorbed by RAGE on intestinal epithelial cells at the blood−intestinal barrier. From a physiological perspective, we herein outline the continuing research regarding oxytocin and social behaviour.