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3D lifespan map suggests mouse ovaries keep a constant share of eggs primed
As mice age, their total egg reserve collapses around tenfold. Yet, according to a new study published in Nature Aging, the proportion of eggs in the brief window where a follicle is shifting from dormant to growing stays ...
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New miniature microscope allows scientists to watch and control brain cells during natural movement
Researchers at the University of Colorado Anschutz and the University of Colorado Boulder have developed a miniature microscope that allows scientists to observe and activate individual brain cells during natural movement, ...
12 hours ago
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Medical research news
Air pollution-linked blood changes detected years before lung cancer diagnosis
A new study, published Tuesday in Nature Communications, found measurable changes in people's blood associated with exposure to air pollution and the subsequent development of lung cancer. The findings provide promising clues ...
11 hours ago
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Scientists uncover cellular mechanism driving both rare childhood dementia and Alzheimer's disease
Researchers at the University of California San Diego and their colleagues have identified a key cellular pathway that drives brain degeneration in both a rare childhood disorder and the far more common Alzheimer's disease. ...
11 hours ago
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Testing finds 85% of everyday personal care products contain unlabeled chemicals with suspected health hazards
A new study of sunscreens, baby lotions, shampoos, soaps and other everyday products found that nearly all contained chemicals not disclosed on their labels. Most contained at least one unlabeled chemical with known or suspected ...
13 hours ago
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An origami-inspired implant could monitor health from beneath the skin
The skin is the body's largest organ. It is a protective shield that keeps harmful pathogens out and vital fluids inside. These very properties make it a tough engineering challenge to design wearable health sensors because ...
Mapping how mental health risks emerge in AI chatbot conversations
Scientists at UCL have developed a framework for stress-testing how AI chatbots respond to vulnerable users, helping researchers identify weaknesses and test ways to make mental health interactions safer.
12 hours ago
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Computational framework identifies novel pathway for asthma inflammation
Researchers at Columbia University Mailman School of Public Health, in collaboration with investigators at the University of Chicago, have developed a new computational framework that helps scientists identify genes that ...
13 hours ago
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Protein secreted by immune cells may help drive brain aging
Brain-resident immune cells that have reached an old-age state called "senescence" secrete a protein that causes dysfunction in other brain cells, according to a study led by investigators at Weill Cornell Medicine. The discovery ...
16 hours ago
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Single-cell atlas reveals how spinal neurons help coordinate walking and other rhythmic movements
Scientists at St. Jude Children's Research Hospital created a single-cell atlas of a key class of spinal neurons involved in motor coordination. From that resource, they identified a small subgroup of interneurons associated ...
14 hours ago
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Detection of optic nerve inflammation enables earlier multiple sclerosis diagnoses
Multiple sclerosis (MS) is the most common chronic autoimmune disease of the central nervous system. An early and accurate diagnosis is crucial for improving the effectiveness of treatment and reducing nerve damage. To standardize ...
16 hours ago
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How folic acid may protect a baby's developing brain and spinal cord
For more than 30 years, one piece of pregnancy advice has been remarkably consistent: Take folic acid. The reason is clear. Folic acid, or vitamin B9, can lower the risk of neural tube defects, serious birth defects that ...
17 hours ago
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Sleep could help identify people at risk of developing Alzheimer's disease at an earlier stage
What if certain signs of the disease were to manifest subtly during sleep, long before the first memory problems appear? This is the line of inquiry being explored by a team of researchers at ULiège.
15 hours ago
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Cells' own abnormal RNA may trigger inflammation during viral infection, challenging 20 years of assumptions
New research led by the Hudson Institute of Medical Research has shown how a cell recognizes that it is infected with a virus to protect itself and surrounding cells or induce inflammation. The discovery, published in Nature ...
16 hours ago
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MRI model reveals microstructural brain changes linked to Huntington's disease
Researchers have shown that an imaging model can detect microstructural abnormalities in the brain associated with Huntington's disease, potentially offering a new method for monitoring disease progression and evaluating ...
17 hours ago
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Long before adulthood, a chemical mark may quietly shape how the brain handles stress
Stress or trauma during childhood may leave people more vulnerable to mental health struggles and stress later in life. Scientists think one reason could be that early-life stress leaves lasting molecular bookmarks on DNA, ...
Cell-surface receptors guide antisense therapy to mutant KRAS in pancreatic cancer cells
Antisense oligonucleotides (ASOs) have been proposed as a therapeutic approach to shut down the production of faulty proteins in a wide variety of diseases, including cancer. In a study published in the Journal of Cell Biology ...
19 hours ago
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ACL injuries may get an early-warning system through AI and wearable sensors
As a sophomore wide receiver who had just joined the USF football team, Jaden Alexis didn't expect a routine play to turn into a career-defining moment. During preseason football camp, Alexis had just sprinted up the sideline ...
11 hours ago
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Immune cells rely on a cholesterol sensor to maintain balance, researchers discover
Every day, billions of cells in our body die and are removed as part of normal tissue maintenance. This continuous cleanup process is essential for keeping the immune system in balance and preventing harmful immune reactions ...
12 hours ago
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Stem cells create humanlike heart valve tissue to model disease and test treatments
Melbourne researchers have created human heart valve tissues from stem cells, providing a powerful new platform to advance treatments for childhood heart diseases.
13 hours ago
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