Alzheimer's-linked immune cells may originate outside the brain, study finds

The short version

• Researchers discovered that immune cells driving Alzheimer's-related brain damage can activate in peripheral lymph nodes before migrating to the nervous system.[ScienceDaily]
• Halting this cellular mechanism in laboratory mice sharply lowered neurodegeneration and preserved cognitive functions.[ScienceDaily]
• Senior author David M. Holtzman highlighted that this process originates outside the brain, offering a potentially more accessible therapeutic target.[ScienceDaily]
• Scientists have yet to determine the precise trigger prompting dendritic cells to activate these harmful T cells.[ScienceDaily]

Key facts

• Immune cells linked to Alzheimer's brain damage may activate in peripheral lymph nodes before migrating into the central nervous system.[ScienceDaily]
• In mouse models, disrupting this immune pathway substantially reduced neurodegeneration and preserved cognitive ability.[ScienceDaily]
• The research findings were published in Nature Neuroscience on September 3.[ScienceDaily]
• Senior author David M. Holtzman noted that the study identifies a disease mechanism that starts outside the brain.[ScienceDaily]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.

• Scientists found a surprising driver of Alzheimer’s outside the brainScienceDaily - Health