Medical Xpress - Medical and Health News

Medical Xpress - Medical and Health News

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Indigo light completely prevented nearsightedness in tree shrews, suggesting that standard indoor lighting may be missing wavelengths important for normal eye development in children.

AI mapping of more than 330,000 centrosomes in breast tumors separated two defects once treated as one. Enlarged centrosomes were associated with more aggressive disease, but why different tumor regions carry different defects remains unresolved.

Repeated 25C-NBOMe exposure during adolescence, but not adulthood, left adult male rats more likely to avoid competing for resources. The behavior tracked with reduced coordination between two brain regions, and adjusting that pathway changed the avoidance.

Biological memory may depend on more than neuronal electrical signals. A proposed tripartite model links astrocytes, neurons, and surrounding chemicals, while leaving open how memory retrieval and meaning might become thought or consciousness.

Nasal drug delivery may help medicines bypass the blood-brain barrier. In one approach, liposomal packaging delivered nearly seven times as much drug to the brain, though consistent delivery, precise targeting, safety and manufacturing still need work.

Don't miss a beat! Here are yesterday's top stories: Unexpected relief emerges as familiar and experimental pills alike point to new ways of treating stubborn conditions: one common arthritis drug appears to aid hair regrowth in alopecia, while another therapy targeting a nerve-pain pathway may reduce opioid use after surgery. Alongside these clinical shifts, the idea that attention to bodily sensations could blunt acute inflammation adds a provocative mind-body thread, especially beside evidence that the brain may carry its own brakes on chronic pain.

After five weeks of emotion-regulation training, college students reported less distress when facing negative images or memories. Eye-tracking and brain scans also pointed to changes in attention and resting brain connectivity, with more top-down processing after training.

Music and spoken stories triggered similar activity in brain regions tied to imagination and meaning. In the scans, 71% of participants matched the same “consensus” story to each unfamiliar instrumental excerpt.

L-BAIBA, a molecule released during exercise, appears to be required for muscle to adapt to training. It strengthens muscle, improves endurance and may help protect against damage and weakness linked to type 2 diabetes.

For glioblastoma patients, laser therapy that cleared at least 91% of the tumor was linked to 2.1 years of survival from diagnosis, versus about 1.5 years with standard open surgery. The analysis also points to timing as a factor, without fully explaining why.