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Healthy Blood Vessels may Delay Cognitive Decline, Says Study

by Colleen Fleiss on June 19, 2019 at 5:01 AM
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Healthy Blood Vessels may Delay Cognitive Decline, Says Study

By interfering with the brain's waste management system, high blood pressure was found to affect conditions such as Alzheimer's disease, revealed research in rats published in JNeurosci. Maintaining blood vessel health could therefore help stave off cognitive decline.

Hypertension causes stiffening and elasticity loss in blood vessels, which hinders clearance of waste molecules from the brain. Using a rat model of hypertension, Maiken Negergaard and colleagues at the University of Copenhagen and Yale School of Medicine studied how the condition affects the movement of cerebrospinal fluid into and interstitial fluid out of brain cells.

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The researchers tracked the flow of cerebrospinal fluid and found that the hypertensive rats exhibited larger ventricles, decreased brain volume, and impaired fluid transport. Treatments targeting hypertension could in turn reduce β-amyloid buildup and delay the onset of Alzheimer's disease.

Source: Eurekalert
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