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American Focus > Blog > Tech and Science > Radical Study Proposes a Single Cause to Explain Alzheimer’s Disease : ScienceAlert
Tech and Science

Radical Study Proposes a Single Cause to Explain Alzheimer’s Disease : ScienceAlert

Last updated: February 9, 2025 9:21 pm
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Radical Study Proposes a Single Cause to Explain Alzheimer’s Disease : ScienceAlert
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A New Model of Alzheimer’s Disease: Stress Granules as the Key Culprit

Alzheimer’s disease is a complex condition that has puzzled researchers for decades. However, a new model proposed by scientists from Arizona State University could potentially revolutionize our understanding of the disease and pave the way for more effective treatments.

The researchers suggest that stress granules, which are protein and RNA clumps that form around cells in stressful conditions, may be the primary culprit behind Alzheimer’s disease. These stress granules are believed to protect cells while homeostasis is restored, but in Alzheimer’s patients, they persist and disrupt crucial cellular processes, including nucleocytoplasmic transport – the movement of molecules between the nucleus and cytoplasm of the cell.

This disruption in communication between the nucleus and cytoplasm leads to massive changes in gene expression, which in turn causes various symptoms of Alzheimer’s, such as neuroinflammation and tau protein tangles. The researchers propose that all the different facets of Alzheimer’s disease may stem from the same source – stress granules.

Cell chart
Illustration of molecule transportation inside the cell, which can be affected by stress granules. (Coleman et al., Alzheimer’s and Dementia: The Journal of the Alzheimer’s Association, 2025)

Neuroscientist Paul Coleman, one of the lead researchers, states, “Our proposal offers a plausible framework to comprehensively understand the mechanisms driving this complex disease. Studying these early manifestations of Alzheimer’s could lead to innovative approaches to diagnosis, treatment, and prevention, addressing the disease at its roots.”

This new model suggests that intervening at the level of stress granules and cell transport systems could potentially prevent the onset of Alzheimer’s symptoms. By understanding how stress granules are formed and how they cause damage, researchers may be able to develop targeted therapies to block the disease at its earliest stages.

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Factors such as air pollution and genetic mutations could be triggering the persistence of stress granules in Alzheimer’s patients. Further studies will delve into the mechanisms behind stress granule formation and their role in disease progression.

Coleman emphasizes, “The key questions are when Alzheimer’s can first be detected and when intervention should begin, both of which have profound implications for society and future medical approaches.” This new model challenges the conventional understanding of Alzheimer’s disease and opens up new avenues for research and treatment.

The research findings have been published in Alzheimer’s and Dementia: The Journal of the Alzheimer’s Association, providing a solid foundation for future investigations into the role of stress granules in Alzheimer’s disease.

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