Brain Blood Flow and Sugar Transport in Alzheimer's Disease With and Without Diabetes - A Pilot Imaging Study

Alzheimer's disease is the most common cause of dementia and affects a growing number of older adults. Although harmful proteins build up in the brain, we still do not fully understand why some brain regions are affected earlier or more severely than others. Many people with Alzheimer's disease also have problems with blood flow and sugar handling in the brain, and these changes may play an important role in disease development. People with type 2 diabetes are at especially high risk of developing Alzheimer's disease and often experience a more severe disease course. This pilot study aims to improve our understanding of how brain blood flow and sugar use are altered in Alzheimer's disease, and whether these changes differ in people with and without type 2 diabetes. We will study three groups: people with Alzheimer's disease without diabetes, people with Alzheimer's disease and type 2 diabetes, and healthy older individuals. By comparing these groups, we aim to identify early brain changes that may contribute to cognitive decline. Participants will undergo advanced brain imaging using positron emission tomography (PET) scans. One scan uses a radioactive sugar tracer to measure how the brain takes up and uses glucose. Importantly, a new non-invasive method will also allow us to estimate how efficiently glucose is transported from the blood into the brain. This is a key process that may be impaired in Alzheimer's disease, but has previously required invasive procedures. The ne…

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Lisbeth Marner, MD, DMSc, PhD  ·  +4538682041  ·  Lisbeth.marner@regionh.dk

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