Medical research

Scientists take a big step toward building a better opioid

For the first time, scientists at the University of North Carolina School of Medicine and collaborators solved the crystal structure of the activated kappa opioid receptor bound to a morphine derivative. They then created ...

Psychology & Psychiatry

Combination approach may boost social interactions in autism

The hormone oxytocin, the so-called hug hormone or cuddle chemical, has more nicknames than proven medical uses. However, oxytocin may benefit children with autism spectrum disorders if receptors for opioids—brain chemicals ...

Medications

Researchers identify source of opioids' side effects

A commercially available drug may help drastically reduce two side effects of opioid painkillers—a growing tolerance and a paradoxical increased sensitivity to pain—without affecting the drugs' ability to reduce pain, ...

Neuroscience

Sex differences found in brain mechanisms important for learning

(Medical Xpress)—Women tend to become addicted to drugs and relapse faster than men, though the biological reasons are not completely clear. Now, investigators at the Nathan Kline Institute for Psychiatric Research and ...

Neuroscience

Study identifies new drug target for chronic, touch-evoked pain

(Medical Xpress)—Researchers at the School of Medicine have identified a subset of nerve cells that mediates a form of chronic, touch-evoked pain called tactile allodynia, a condition that is resistant to conventional pain ...

Medical research

Opioid dependence plays role in chronic pain

The bodies of mammals, including humans, respond to injury by releasing endogenous opioids—compounds that mitigate acute pain. A team of researchers led by those at the University of Kentucky has uncovered groundbreaking ...

Medical research

Researchers design variant of main painkiller receptor

Opioids, such as morphine, are still the most effective class of painkillers, but they come with unwanted side effects and can also be addictive and deadly at high doses. Designing new pain-killing drugs of this type involves ...

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