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Wednesday, October 24, 2018 10:19 PM | The Vascular Connection to Multiple Sclerosis shared Canadian Neurovascular Health Society's post. Volg link

Canadian Neurovascular Health Society
From Dr. Paolo Zamboni: “The interaction between extra cranial veins and #Glymphatic system, and their contribution to neuroinflammation in #MultipleSclerosis. Chapter 29 Neuroinflammation 2nd ed Minagar, Elsevier 2018“

The role of the extracranial veins in the pathogenesis of inflammatory neurological/neurodegenerative diseases remains largely unknown and under-investigated. A condition named chronic cerebrospinal venous insufficiency (CCSVI) strikes the main extracranial veins and determines a slight increase in pressure up to the brain venules. The condition is linked with a recently-described chain of pathophysiologic events. Impaired CSF diffusion into the brain parenchyma between the peri-arterial and the perivenous spaces contributes to a worsened protein clearance. Furthermore, restricted venous outflow through the jugular veins reduces perfusion and the energy available to oligodendrocytes for myelin synthesis. Both peptide waste and myelin debris represent a strong chemotactic signaling. Increased transmural pressure in the CCSVI condition may also facilitate blood-brain barrier leakage and red blood cells extravasation. Consequently, iron stores are increased and likely linked to inflammation and degeneration. The contribution of the impaired venous function to neuroinflammation/degeneration warrants further studies in this direction.