“P039 | GUT-BRAIN AXIS ALTERATIONS IN A NITROGLYCERIN MODEL OF MIGRAINE: FROM MICROBIOTA DYSBIOSIS TO TRIGEMINAL SENSITIZATION: C. Demartini1, S. Facchetti1|2, M. Francavilla1, S. Baldi3, S. Bertorello3, G. Bartolucci4, E. Niccolai3, A. Amedei3, R. Greco1, C. Tassorelli1|2 | 1Section of Translational Neurovascular Research, IRCCS Mondino Foundation, Pavia, Italy; 2Department of Brain and Behavioral Sciences, University of Pavia, Italy; 3Department of Experimental and Clinical Medicine, University of Florence, Italy; 4Department of Neuroscience, Psychology, Drug Research and Child Health NEUROFARBA, University of Florence, Italy”. 2026. Confinia Cephalalgica 36 (s1). https://doi.org/10.4081/cc.2026.15995.