Researchers Find Peroxisomes Help Protect Insulin and Maintain Beta Cell Health
Peer-Reviewed Publication
Updates every hour. Last Updated: 31-Oct-2026 13:15 ET (31-Oct-2026 17:15 GMT/UTC)
Peroxisomes are small structures inside cells that help remove harmful substances but also break down fats. In animal studies, researchers disrupted these structures and found it damaged the cells that produce insulin (called beta or β cells) in three ways: promoted oxidative stress (a kind of cellular wear and tear), altered the chemical structure of the hormone insulin, and reduced signs that the cells were fully mature and functioning normally. Strangely, the animals released more insulin in response to sugar, yet their bodies were less able to keep blood sugar under control.
The study, published in JCI Insight, helps explain how problems inside cells may drive the loss of healthy insulin production seen in diabetes.
Scientists from Gladstone Institutes, UC San Francisco, and Stanford University, in collaboration with Biohub, have unveiled a massive, high-resolution functional map of human immune cells that promises to transform our understanding of how genetics control health and disease. Published in the journal Cell, the study represents a landmark achievement in immunology and genomics. By systematically stress-testing genes across the genome in 22 million human immune cells, scientists moved beyond mere DNA sequencing to decode the dynamic circuits that govern how these genes actually work in the context of health and disease.
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The American Academy of Neurology (AAN) has launched BrainHealth.com, a new public resource offering expert-reviewed information, tools and stories to help people improve and protect their brain health. BrainHealth.com is designed for people living with neurological conditions, supporting a loved one or just looking for ways to embrace brain health in everyday life.
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