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New Blood Biomarker Predicts Alzheimer's in Cognitively Healthy Elderly

Researchers previously thought toxic amyloid accumulation in the brain was the sole contributing factor.

Pexels Matthias Zomer 339620
Matthias Zomer

Determining who will develop Alzheimer’s disease and who won’t is surprisingly nuanced. Previously, scientists believed that amyloid plaques were the main cause of Alzheimer's, leading to drug development focused on targeting them. However, a recent EurekAlert! article suggests that other factors, such as brain inflammation and astrocyte activity, play a significant role in disease progression. Astrocytes are star-shaped cells in the brain that support neurons, and the researchers found that they act as key regulators in Alzheimer's progression.

The findings have important implications for future Alzheimer's drug trials, since early diagnosis of at-risk people can help select appropriate candidates for potential therapies. By including astrocyte reactivity markers in diagnostic tests, researchers can better identify those who are more likely to develop Alzheimer's and may benefit from interventions that slow down the disease.

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