Neuroscience

Findings reveal brain mechanisms at work during sleep

New findings presented today report the important role sleep plays, and the brain mechanisms at work as sleep shapes memory, learning, and behavior. The findings were presented at Neuroscience 2012, the annual meeting of ...

Medical research

Exercise-induced hormone irisin triggers bone remodeling in mice

Exercise has been touted to build bone mass, but exactly how it actually accomplishes this is a matter of debate. Now, researchers show that an exercise-induced hormone activates cells that are critical for bone remodeling ...

Psychology & Psychiatry

How fear memories get stuck in some brains

Researchers at Linköping University, Sweden, have discovered a biological mechanism that increases the strength with which fear memories are stored in the brain. The study, carried out in rats, is published in Molecular ...

Cardiology

New 3-D-printed artery can monitor blockages from the inside

When surgeons replace part of a blood vessel—something they do in 450,000 patients per year in the United States to treat blood clots, coronary disease, stroke damage and more—the grafted vessel is monitored by CT scans, ...

Arthritis & Rheumatism

Discovery of molecular pathway through which stress affects lupus

Systemic lupus erythematosus (SLE) is an autoimmune disease that affects all the organ systems of the body. This chronic disease includes periods of illness, called flare ups, and periods of remission, when symptoms are few. ...

Medical research

A direct path for understanding and treating brittle bones

A study by researchers at Children's Hospital Boston and collaborators at other institutions has provided new insights into the means by which bone cells produce new bone in response to mechanical stresses, such as exercise. ...

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