Ileal Gpbar1 gates depressive phenotypes via gut to brain "vagal-NTS-PVN"GABAergic axis
Lin Zhong, Yuanlu Shu, Mi Yan, Long Wang, Min Wu, Jing Wu, Song Yang, Zedong Gu, Zhongliang Chen, Guoyan Xin, Shan Guan, Tian Tian
This study identifies ileal Gpbar1 as a peripheral node that regulates depressive behaviors via a gut-to-brain GABAergic axis, showing that agonism of Gpbar1 can reverse depressive-like phenotypes.
bioRxiv · Sep 14, 2026 · PreprintNeuroscience