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A new research has found that heart disease causes a breakdown of a key brain function which links brain activity and blood flow.The study has been published in the 'eLife Journal'.This is happening in heart disease patients before the build-up of fat in the brain's blood vessels (atherosclerosis) and is a prelude to dementia. Until now, it has been unclear how some forms of vascular dementia can happen years before atherosclerosis in the brain.The researchers also discovered that the combination of heart disease and a genetic predisposition for Alzheimer's disease trebles the amount of beta-amyloid, a protein that builds up and triggers Alzheimer's, and increases the levels of an inflammatory gene (IL1) in the brain.Dr Osman Shabir, the lead author of the study from the University of Sheffield's Neuroscience and Healthy Lifespan Institutes, said, "Alzheimer's disease is the most common form of dementia worldwide and heart disease is a major risk factor for both Alzheimer's and dementia. The new findings are key to furthering our understanding of the links between heart disease and dementia.""We've discovered that heart disease in midlife causes the breakdown of neurovascular coupling, an important mechanism in our brains which controls the amount of blood supplied to our neurons. This breakdown means the brain doesn't get enough oxygen when needed and in time this can lead to dementia," he added.The team also found that brain injuries can also worsen brain blood flow regulation, supporting observations that patients' symptoms often worsen after injuries or falls.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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University Of Sheffield's Neuroscience And Healthy Lifespan InstitutesFOLLOW

University of sheffield's neuroscience and healthy lifespan institutes, Latest News

Technology :Heart disease causes early brain dysfunction, may treble key Alzheimer's protein: Study

A new research has found that heart disease causes a breakdown of a key brain function which links brain activity and blood flow. ...