title: Cerebrovascular heterogeneity and neuronal excitability.
abstract: The cerebral vasculature is a complex tridimensional network of arterial and venous vessels which are anatomically in proximity of and functionally coupled to neurons. Depending on the cellular composition of the vascular wall and size, cerebral vessels control regional blood flow, define interstitial homeostasis or cerebrospinal fluid circulation and influence immune cell patrolling. Pathological deviations from these functions promote or are a consequence of brain diseases, directly impacting neuronal firing. We propose that specific cerebrovascular segments are differentially implicated in the pathophysiology of epilepsy, including difference between white and grey matter. We offer plasticity of perivascular mural cells and endothelial-pericyte interactions as emerging players. We outline the potential for MRI vascular biomarkers tailored to the epileptic brain, specifically cerebral blood volume and flow, tissue oxygen saturation and microvessel permeability. Finally, we show the advantages of the guinea pig whole brain preparation to study the link between cerebrovascular permeability, expression of vascular adhesion molecules, inflammation and neuronal excitability.
authors.affiliation: Department of Neurophysiology, Besta Neurological Institute, Milan, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Librizzi
authors.affiliation: Department of Neurophysiology, Besta Neurological Institute, Milan, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: de Cutis
authors.affiliation: Flocel Inc., Cleveland, OH, USA.
authors.forename: Damir
authors.initials: D
authors.lastname: Janigro
authors.affiliation: Laboratory of Cerebrovascular Mechanisms of Brain Disorders, Department of Neuroscience, Institute of Functional Genomics (UMR 5203 CNRS - U 1191 INSERM), Montpellier, France.
authors.forename: Leonie
authors.initials: L
authors.lastname: Runtz
authors.affiliation: Laboratory of Cerebrovascular Mechanisms of Brain Disorders, Department of Neuroscience, Institute of Functional Genomics (UMR 5203 CNRS - U 1191 INSERM), Montpellier, France.
authors.forename: Frederic
authors.initials: F
authors.lastname: de Bock
authors.affiliation: INSERM, U1216, Laboratory of Functional Neuroimaging and Brain Perfusion, France, Université Grenoble Alpes, Grenoble Institute of Neuroscience, France.
authors.forename: Emmanuel L
authors.initials: EL
authors.lastname: Barbier
authors.affiliation: Laboratory of Cerebrovascular Mechanisms of Brain Disorders, Department of Neuroscience, Institute of Functional Genomics (UMR 5203 CNRS - U 1191 INSERM), Montpellier, France. Electronic address: nicola.marchi@igf.cnrs.fr.
authors.forename: Nicola
authors.initials: N
authors.lastname: Marchi
mesh_terms: D000818:Animals; D001921:Brain / Q000098:blood supply* / Q000503:physiopathology; D002560:Cerebrovascular Circulation / Q000502:physiology*; D004827:Epilepsy / Q000503:physiopathology*; D006801:Humans; D055806:Microvessels / Q000378:metabolism*; D009474:Neurons / Q000378:metabolism*; D012039:Regional Blood Flow / Q000502:physiology
keywords: Blood-brain barrier; Mri; Mural cells; Pial-penetrating vessels; Seizures