The perineurium integrates leptin with its sympathetic outflow to protect against obesity. - Sarker G; Haberman E; Chandran A; Monfeuga T; Maroteau C; Lundh S; Oliveira DS; Raimondi A; Ziegler K; Gomes T; Cordeiro TN; Parekh K; et al. (Nature metabolism, 2026)