Texas A&M Develops Nasal Spray to Reverse Brain Aging

Microparticle therapy restores cognitive function in animal models within weeks

Apr. 17, 2026 at 4:36pm

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A highly textured, abstract painting in earthy tones featuring sweeping geometric shapes and precise botanical spirals, conceptually representing the complex biological mechanisms behind a new nasal spray therapy that can reverse brain aging.A revolutionary nasal spray therapy harnesses the power of microRNAs to restore cognitive function and reverse the effects of brain aging.College Station Today

Researchers at Texas A&M University have developed a nasal spray that uses extracellular vesicles loaded with microRNAs to directly target and reduce brain inflammation, reversing cognitive decline in animal models within weeks. The innovative therapy bypasses the blood-brain barrier to deliver these molecular 'messengers' that regulate inflammatory pathways, recharging aging brains like a software update for the mind.

Why it matters

Chronic brain inflammation is a key driver of memory loss and cognitive decline, which is projected to affect twice as many people by 2060 as dementia cases continue rising. This non-invasive treatment could disrupt the $50 billion anti-aging market by offering a potential solution to inevitable cognitive decline.

The details

The Texas A&M team, led by Dr. Ashok Shetty, found that just two doses of the nasal spray delivered extracellular vesicles carrying microRNAs directly to the brain via the olfactory nerves. These molecular 'Uber drivers' bypassed the blood-brain barrier to target specific inflammatory pathways, calming overactive immune cells and restoring cognitive function in aging animal models within weeks. Behavioral tests showed the treated animals had improved novel object recognition and environmental adaptation, while their cellular powerhouses, the mitochondria, recharged like new batteries.

  • The Texas A&M researchers have already filed a U.S. patent for the technology.
  • Human trials for the nasal spray are still years away, pending extensive preclinical safety testing.

The players

Dr. Ashok Shetty

The lead researcher on the Texas A&M team that developed the brain-rejuvenating nasal spray.

Dr. Madhu Leelavathi Narayana

A co-author on the study who explained how the microRNA 'messengers' in the spray regulate inflammatory pathways in the brain.

Texas A&M University

The research institution where the breakthrough nasal spray technology was developed.

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What they’re saying

“MicroRNAs act like master regulators.”

— Dr. Madhu Leelavathi Narayana, Co-author

“A simple, two-dose nasal spray could one day replace invasive procedures.”

— Dr. Ashok Shetty, Lead Researcher

What’s next

The National Institute on Aging is backing the Texas A&M research, but human trials for the nasal spray are still years away as the team conducts extensive preclinical safety testing.

The takeaway

This breakthrough suggests cognitive decline may not be an inevitable part of aging, opening the door to a future where our brains can be 'updated' like software to maintain peak performance and ward off dementia.