From San Diego, at the Society for Neuroscience meeting
Epilepsy affects more than 2 million people in the United States alone, and existing medications don't always safely control the seizures that mark the disorder. A drug mimicking a natural substance in the brain may offer a new therapy.
In the 1990s, Andrey M. Mazarati of the University of California, Los Angeles and his colleagues found that administering a small protein called galanin arrests epileptic seizures in mice. Galanin is a neuropeptide, a molecule used in small concentrations by the brain's nerve cells.
Galanin itself would make a poor drug, however. It doesn't easily cross from the bloodstream into the brain, which is why Mazarati had to inject the neuropeptide directly into the brain, and it's destroyed quickly by enzymes in the body.