Elvio Mazzotta, Iveta Grants, Egina Villalobos-Hernandez, Samhita Chaudhuri, Jonathon L McClain, Luisa Seguella, Derek M Kendig, Bryan A Blakeney, Srinivasa K Murthy, Reiner Schneider, Patrick Leven, Sven Wehner, Alan Harzman, John R Grider, Brian D Gulbransen, Fedias L Christofi
BACKGROUND AND PURPOSE: ET-1 signalling modulates intestinal motility and inflammation, but the role of ET-1/ETB receptor signalling is poorly understood. Enteric glia modulate normal motility and inflammation. We investigated whether glial ETB signalling regulates neural-motor pathways of intestinal motility and inflammation. EXPERIMENTAL APPROACH: We studied ETB signalling using: ETB drugs (ET-1, SaTX, BQ788), activity-dependent stimulation of neurons (high K+ -depolarization, EFS), gliotoxins, Tg (Ednrb-EGFP)EP59Gsat/Mmucd mice, cell-specific mRNA in Sox10CreERT2 ;Rpl22-HAflx or ChATCre ;Rpl22-HAflx mice, Sox10CreERT2 ::GCaMP5g-tdT, Wnt1Cre2 ::GCaMP5g-tdT mice, muscle tension recordings, fluid-induced peristalsis, ET-1 expression, qPCR, western blots, 3-D LSM-immunofluorescence co-labelling studies in LMMP-CM and a postoperative ileus (POI) model of intestinal inflammation...
May 17, 2023: British Journal of Pharmacology