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Neurovascular signaling in the brain and the pathological consequences of hypertension
Dunn KM, Nelson MT
American Journal of Physiology. Heart and Circulatory Physiology (Print). 2014;306(1):H1-H14.
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Abstract
The execution and maintenance of all brain functions are dependent on a continuous flow of blood to meet the metabolic needs of the tissue. To ensure the delivery of resources required for neural processing and the maintenance of neural homeostasis, the cerebral vasculature is elaborately and extensively regulated by signaling from neurons, glia, interneurons, and perivascular nerves. Hypertension is associated with impaired neurovascular regulation of the cerebral circulation and culminates in neurodegeneration and cognitive dysfunction. Here, we review the physiological processes of neurovascular signaling in the brain and discuss mechanisms of hypertensive neurovascular dysfunction.
Keyword(s)
astrocyte; cerebral blood flow; hypertension; neurovascular coupling; parenchymal astriole