Researchers at ETH Zurich have discovered a damaging process inside brain cells that drives Alzheimer's disease and created an experimental compound that stops it in mice. The compound, called "Compound 10," reduced nerve cell loss, lowered amyloid beta deposits, and even extended lifespan and reduced gray hairs in older mice.
The Research
Led by Professor Ursula Quitterer, the team spent nearly two decades investigating a protein called GRK2. Using human brain tissue from patients with and without dementia, and mouse models of Alzheimer's, they found that an inactive form of GRK2 clumps together inside nerve cells. These aggregates attach to mitochondria, the cell's powerhouses, blocking their energy production. This stress then increases production of amyloid beta, a protein fragment linked to Alzheimer's, creating a vicious cycle that accelerates neuron death.
In mice aged 1.5 to 2 years (equivalent to older humans), the experimental compound prevented GRK2 from forming aggregates. This restored mitochondrial function, reduced amyloid beta deposits by up to 40% (based on histological analysis), and slowed nerve cell loss. Treated mice also lived longer and showed fewer age-related changes like gray hairs. The research was published in the journal Cell Reports Medicine.
Why It Matters
Existing Alzheimer's drugs target amyloid beta after it forms, but this research attacks an earlier trigger: the GRK2 aggregates. If proven safe in humans, Compound 10 could offer a completely new treatment strategy that addresses both nerve cell energy failure and amyloid production. Importantly, the compound also improved heart function in mice, suggesting potential broader benefits for healthy aging. However, remember that mouse results don't always translate to humans.
What You Can Do
While this drug isn't available yet, you can support your brain health now: maintain regular aerobic exercise (which boosts mitochondrial function), eat a Mediterranean diet rich in antioxidants, and challenge your mind with puzzles or new skills. These habits may help reduce your risk of cognitive decline.
Source: ScienceDaily Mind & Brain
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