Abstract
In an analysis of 46 individual brain structures and regions, we found that 12-14 weeks of renal hypertension in rats were associated with a 42% increase in cerebrovascular resistance, an average 28% reduction in cerebral blood flow, and no general change in cerebral glucose metabolism. A specific increase in metabolic activity, however, was identified in locus coeruleus. Generalized cerebral vasoconstriction resulting from central noradrenergic innervation originating in locus coeruleus is a possible explanation for the uncoupling of cerebral blood flow and metabolism in rats with chronic renal hypertension.
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