White Matter Damage Drives Neurodegeneration

Researchers at the University of Cambridge, led by Ragnhildur Thóra Káradóttir, have published a study in Nature (journal) revealing that damage to the brain's white matter can trigger features associated with neurodegenerative diseases. This challenges the traditional view that such diseases are primarily linked to grey matter changes. The study found that localized myelin damage initiates a coordinated response in connected grey matter, which is part of the brain's repair mechanism. However, if myelin regeneration fails, this response becomes chronic inflammation, contributing to neurodegeneration. The findings are particularly relevant for Multiple sclerosis and offer a new framework for understanding and potentially treating conditions like Alzheimer s disease and Parkinson s disease by targeting myelin regeneration.