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      The Translational Significance of the Neurovascular Unit.

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          Abstract

          The mammalian brain is supplied with blood by specialized vasculature that is structurally and functionally distinct from that of the periphery. A defining feature of this vasculature is a physical blood-brain barrier (BBB). The BBB separates blood components from the brain microenvironment, regulating the entry and exit of ions, nutrients, macromolecules, and energy metabolites. Over the last two decades, physiological studies of cerebral blood flow dynamics have demonstrated that substantial intercellular communication occurs between cells of the vasculature and the neurons and glia that abut the vasculature. These findings suggest that the BBB does not function independently, but as a module within the greater context of a multicellular neurovascular unit (NVU) that includes neurons, astrocytes, pericytes, and microglia as well as the blood vessels themselves. Here, we describe the roles of these NVU components as well as how they act in concert to modify cerebrovascular function and permeability in health and in select diseases.

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          Author and article information

          Journal
          J. Biol. Chem.
          The Journal of biological chemistry
          American Society for Biochemistry & Molecular Biology (ASBMB)
          1083-351X
          0021-9258
          Jan 20 2017
          : 292
          : 3
          Affiliations
          [1 ] From the Departments of Neurology, Pathology, Neurosurgery, and Veterans Affairs, Oregon Health & Science University, Portland, Oregon 97239-2941.
          [2 ] From the Departments of Neurology, Pathology, Neurosurgery, and Veterans Affairs, Oregon Health & Science University, Portland, Oregon 97239-2941 neuwelte@ohsu.edu.
          Article
          R116.760215
          10.1074/jbc.R116.760215
          5247651
          27920202
          f162c5de-7f73-4c82-a6d3-d5ea327925cd

          blood-brain barrier,brain,brain tumor,cerebrovasculature,glioblastoma,neurovascular unit,vascular endothelial growth factor (VEGF),vasculogenesis

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