South Korean scientists solve 250-year-old dementia-linked brain mystery
South Korean researchers have identified the mechanism by which the brain clears metabolic waste through tiny openings in the arachnoid membrane. This discovery explains how cerebrospinal fluid drains waste and offers new insights into preventing neurodegenerative diseases like Alzheimer's.
Why it matters
Understanding this waste-clearance pathway could lead to breakthrough treatments for dementia and other brain disorders caused by toxic protein buildup.
Researchers in South Korea say they have finally worked out how the brain flushes away waste – offering a clearer picture of the processes involved in dementia and other brain disorders that could one day be harnessed to treat them.
The breakthrough, published this month in journal Cell, solved a puzzle that has stumped scientists since lymphatic vessels around the brain were first discovered roughly 250 years ago: how does our body clear away the waste?
An international team led by Dr Koh Gou-young, a scientist at the Centre for Vascular Research within South Korea’s Institute for Basic Science, identified tiny openings in the tough membrane protecting the brain – dubbed arachnoid fenestrations – through which fluid drains into vessels around the nose and eyes before reaching lymph nodes in the neck.
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