Green tea

Brain “Cleaning” Process Revived in Lab Tests, Offering Potential Alzheimer’s Breakthrough

Irvine, CA – August 8, 2025 – Researchers at the University of California, Irvine (UCI) have announced a promising finding: a combination of Vitamin B3 (Nicotinamide) and a green tea antioxidant (Epigallocatechingallat – EGCG) can restore a key energy molecule in aging brain cells, boosting thier ability to clear out damaging metabolic waste – a process crucial in preventing neurodegenerative diseases like Alzheimer’s. The findings, published today in Gero Science, represent a potential new avenue for treating age-related cognitive decline.

The Science Behind Brain Waste removal

As we age,the brain’s natural “cleaning” system – responsible for removing cellular debris and protein build-up – becomes less efficient.This accumulation of waste products,especially amyloid proteins,is a hallmark of Alzheimer’s disease and other forms of dementia. The UCI team focused on Guanosine Triphosphate (GTP), an energy source within brain cells that powers this crucial waste removal process. They found that GTP levels decline with age, hindering the brain’s ability to function optimally.

“with increasing age,the energy of nerve cells in the brain decreases,which restricts the ability to remove unwanted proteins and damaged components,” explained lead author gregory Brewer. “We found that restoration of the energy level helps the neurons to regain this important cleaning function.”

In laboratory tests using isolated nerve cells, the combination of Nicotinamide and EGCG demonstrably reversed age-related cellular deficits and improved the cells’ capacity to eliminate harmful amyloid protein. A 24-hour treatment with the combination restored GTP levels to those typically found in younger, healthier cells. This energy boost also led to reduced oxidative stress, another key contributor to neurodegeneration.

Why GTP Matters & Future Implications

The study underscores the previously underestimated importance of GTP in maintaining healthy brain function. Researchers believe that by replenishing the brain’s energy reserves with readily available dietary supplements, a new therapeutic approach to combatting age-related cognitive decline and Alzheimer’s could be within reach.

Tho, the path to clinical application isn’t straightforward. Initial studies indicate that simply consuming Nicotinamide orally doesn’t deliver the desired effect, and drinking green tea alone is also insufficient. The team is now focused on identifying the optimal delivery method for this combination therapy. A recent clinical trial showed oral Nicotinamide was ineffective, suggesting a different administration route is necessary.

Key Details Not Explicitly Mentioned in the Original Article:

Amyloid Plaques & Tau Tangles: the article mentions amyloid proteins, but doesn’t explicitly state they form plaques. Alzheimer’s is characterized by both amyloid plaques and neurofibrillary tangles formed by the protein tau. Improving waste removal could possibly address both.
Glial Cells: While the research focuses on neurons, glial cells (astrocytes, microglia) play a critical role in brain waste clearance. The impact of Nicotinamide/EGCG on glial cell function warrants further investigation.
Blood-Brain Barrier: Successfully delivering these compounds to the brain requires overcoming the blood-brain barrier, a protective mechanism that limits the passage of substances from the bloodstream into brain tissue. This is a significant hurdle for any potential Alzheimer’s treatment. EGCG Bioavailability: EGCG has notoriously low bioavailability when ingested orally. This further complicates the challenge of achieving therapeutic levels in the brain.

This research offers a glimmer of hope in the ongoing fight against Alzheimer’s disease, highlighting the potential of harnessing the body’s natural processes to maintain brain health as we age.