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- W1968261308 abstract "1. Mechanisms regulating cerebral circulation, including autoregulation of cerebral blood flow (CBF), have been widely investigated. Vasodilators such as nitric oxide, prostacyclin, calcitonin gene-related peptide (CGRP) and K+ channel openers are well known to have important roles in the physiological and pathophysiological control of CBF autoregulation. In the present review, the focus is on the mechanism(s) of altered CBF autoregulation after traumatic brain injury and subarachnoid haemorrhage (SAH) and on the effect of adenovirus-mediated transfer of Cu/Zn superoxide dismutase (SOD)-1 in amelioration of impaired CBF autoregulation. 2. The roles of CGRP and adenosine are particularly emphasized, both being implicated in the autoregulatory vasodilation of the pial artery in response to hypotension. 3. After fluid percussion injury, production of NADPH oxidase-derived superoxide anion and activation of tyrosine kinase links the inhibition of K+ channels to impaired autoregulatory vasodilation in response to acute hypotension and alterations in CBF autoregulation in rat pial artery. 4. Subarachnoid haemorrhage during the acute stage causes an increase in NADPH oxidase-dependent superoxide formation in cerebral vessels in association with activated tyrosine phosphorylation-coupled increased expression of gp91phox mRNA and membrane translocation of Rac protein, thereby resulting in a significant reduction of autoregulatory vasodilation. 5. Fluid percussion injury and SAH-induced overproduction of superoxide anion in cerebral vessels contributes to the impairment of CBF autoregulation and administration of recombinant adenovirus-mediated transfer of the Cu/Zn SOD-1 gene effectively ameliorates the impairment of CBF autoregulation of the pial artery." @default.
- W1968261308 created "2016-06-24" @default.
- W1968261308 creator A5022665853 @default.
- W1968261308 creator A5042047712 @default.
- W1968261308 date "2004-01-01" @default.
- W1968261308 modified "2023-09-25" @default.
- W1968261308 title "Importance of calcitonin gene-related peptide, adenosine and reactive oxygen species in cerebral autoregulation under normal and diseased conditions" @default.
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- W1968261308 doi "https://doi.org/10.1111/j.1440-1681.2004.03943.x" @default.
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