Nasal Swab Test Shows Promise for Early Alzheimer's Detection

Researchers at Duke University School of Medicine have developed an experimental nasal swab that may enable early detection of Alzheimer's disease. This innovative approach, which involves swabbing the inside of the nose, has shown the ability to identify early changes in nerve and immune cells before cognitive symptoms manifest. Dr. Bradley Goldstein, a professor at Duke, emphasized the potential of this method, stating, "If we can diagnose people early enough, we might be able to start therapies that prevent them from ever developing clinical Alzheimer’s."

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The findings, published in *Nature Communications*, are based on a study involving 22 participants. The process included applying a numbing spray followed by the use of a tiny brush to collect samples from the upper nasal cavity, where olfactory nerve cells are located. Researchers analyzed the gene activity within these samples, revealing early shifts in nerve and immune cell activity. The nasal swab test successfully distinguished between early and clinical Alzheimer's cases and healthy controls approximately 81% of the time. This contrasts with current blood tests that detect markers appearing later in the disease progression.

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The ability to study living neural tissue through this method opens new avenues for both diagnosis and treatment of Alzheimer's disease. Vincent D’Anniballe, a student involved in the research, noted the significance of this advancement, stating, "Now we can study living neural tissue, opening new possibilities for diagnosis and treatment." The research is supported by the National Institutes of Health and is being conducted in collaboration with the Duke & UNC Alzheimer’s Disease Research Center.

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Mary Umstead, a participant in the study, shared her motivation for volunteering, driven by the loss of her sister, Mariah Umstead, who was diagnosed with young-onset Alzheimer's at the age of 57. Umstead expressed her hope that the research could prevent other families from experiencing similar losses: "I would never want any family to have to go through that kind of loss that we went through with Mariah."

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The Duke research team plans to expand their study to larger groups to further assess the nasal swab's effectiveness in tracking treatment progress over time. This ongoing research could significantly impact the future of Alzheimer's diagnosis and management, potentially leading to earlier interventions that could alter the disease's trajectory.

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• "If we can diagnose people early enough, we might be able to start therapies that prevent them from ever developing clinical Alzheimer’s." — Dr. Bradley Goldstein, Duke University School of Medicine

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• "Now we can study living neural tissue, opening new possibilities for diagnosis and treatment." — Vincent D’Anniballe, Duke Medical Scientist Training Program

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• "I would never want any family to have to go through that kind of loss that we went through with Mariah." — Mary Umstead, Study Participant

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