ScienceDaily
Common blood pressure drug could make cancer therapy far more powerful
A widely used blood pressure medication may be about to pull double duty in oncology. Researchers found that telmisartan dramatically enhances the effectiveness of olaparib, a targeted cancer drug currently limited to patients with BRCA mutations. The combination has already advanced to human clinical trials on the strength of promising preclinical results showing boosted immune response and heightened anticancer activity.
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Scientists finally solved the mystery of Earth's greatest mass extinction
Some 252 million years ago, the end-Permian mass extinction reshaped ocean life forever — and scientists now believe they know why certain species survived while others vanished. Warming seas and plummeting oxygen levels systematically eliminated animals whose biology couldn't cope, while those with more adaptable metabolisms endured and came to dominate marine ecosystems. The findings carry an unsettling relevance: as modern oceans warm and lose oxygen, the same selective pressures may already be at work.
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Yale scientists may have found how Parkinson's disease spreads through the brain
Yale researchers have identified two neuron surface proteins that act as vehicles for spreading alpha-synuclein, the toxic protein at the heart of Parkinson's disease. In mouse models, blocking these proteins significantly slowed disease progression. The finding opens a promising new avenue for therapies aimed at halting Parkinson's at the source of its spread rather than managing symptoms after the fact.
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Alzheimer's tau protein has a surprising secret role in memory
Tau, long known as a villain in Alzheimer's disease, turns out to play a critical role in healthy memory formation by helping organize the brain cells that store new experiences. A new mouse study shows that when tau behaves abnormally, it disrupts not just the ability to form new memories but also the retrieval of ones already stored. The findings reframe tau as a double-edged protein whose malfunction may explain the sweeping memory loss seen in Alzheimer's patients.
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Columbia scientists discover surprising link between serotonin and heart valve disease
Serotonin, long associated with mood regulation, may also accelerate the deterioration of heart valves in certain patients. Columbia researchers found that people with degenerative mitral regurgitation who take SSRI antidepressants and carry a specific genetic variant face faster progression to severe valve damage and earlier need for surgery. The findings open a new front in understanding how psychiatric medications may interact with cardiovascular disease in genetically vulnerable individuals.
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