Light — not pain-killing drugs — used to activate brain’s opioid receptors

Washington University School of Medicine neuroscientists, led by Michael R. Bruchas, PhD, assistant professor of anesthesiology and of neurobiology, have attached the light-sensing protein rhodopsin to opioid receptor parts to activate the receptor pathways using light from a laser fiber-optic device. They also influenced the behavior of mice using light, rather than drugs, to activate the reward response.
Washington People: Regis O’Keefe

Washington People: Regis O’Keefe

Regis J. O’Keefe, MD, PhD, is the new head of the Department of Orthopaedic Surgery. The former captain of the Yale University basketball team takes a collaborative approach to managing the department. O’Keefe, who specializes in musculoskeletal oncology, said his goal is to make those around him better.
Fat signals control energy levels in the brain

Fat signals control energy levels in the brain

An enzyme secreted by the body’s fat tissue controls energy levels in the brain, according to new research led by Shin-ichiro Imai, MD, PhD, of the School of Medicine. The findings, in mice, underscore a role for the body’s fat tissue in controlling the brain’s response to food scarcity, and suggest there is an optimal amount of body fat for maximizing health and longevity.
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