A Breakthrough in Alzheimer’s Treatment: New Drug Bolsters Blood-Brain Barrier
A groundbreaking new drug targeting inflammation in the brain has recently been discovered to strengthen the blood-brain barrier in mice, offering hope for a new approach in combating neurodegenerative diseases like Alzheimer’s.
The drug, which focuses on an immune protein called 15-PGDH, has shown promising results in blocking brain inflammation and protecting the blood-brain barrier, according to pathologist Sanford Markowitz from Case Western Reserve University (CWRU).
Remarkably, the drug’s effectiveness does not rely on reducing amyloid levels, the proteins traditionally associated with Alzheimer’s progression. This suggests that the new treatment targets a different physiological pathway than current medications, offering a fresh perspective in Alzheimer’s disease treatment.

The blood-brain barrier acts as a protective layer that filters out harmful substances from entering the brain. Damage to this barrier, as seen in conditions like traumatic brain injury, can increase the risk to brain cells and is linked to neurodegenerative diseases like Alzheimer’s.
Through their research, CWRU scientists identified elevated levels of the immune enzyme 15-PGDH in individuals with neurodegeneration. In response, they developed a compound, SW033291, that can block the enzyme’s activity, leading to the protection of the blood-brain barrier and prevention of cognitive decline even after brain injury.

With nearly 10 million new cases of dementia reported globally each year, the need for innovative treatment options is more pressing than ever. While this new drug shows promise in preserving cognitive function, further research is needed to fully understand its potential impact on neurodegenerative diseases.
Published in PNAS, the study by Yeojung Koh and colleagues at CWRU highlights the significance of 15-PGDH as a key player in maintaining blood-brain barrier integrity and offers a compelling target for protecting against neurodegenerative disorders.