It’s that time of year again: holiday parties and family feasts! One of the most frequently made—and most often broken—New Year’s resolutions is to follow a sensible diet. All goes well until you catch sight of a cupcake or smell some cookies fresh out of the oven. Sensory cues trigger cravings that crumble resolve and, before you know it, you’re on a sugar high.
Actually, from a biological perspective, it’s not a fair fight. Once desires and preferences are hard-wired in the brain, people have difficulty changing their habits. But one of 2013 recipients of the NIH Director’s New Innovator Award, Kay Tye of the Massachusetts Institute of Technology (MIT), Cambridge, MA, is up for the challenge. In a high-risk, high-reward research project, she’s trying to find ways to control food cravings by reprogramming the brain, where the behavior begins. Continue reading →
One of the most debilitating, and heartbreaking, consequences of Alzheimer’s disease is the way it slowly robs people of their memories. Unfortunately, we don’t yet have a cure for Alzheimer’s, let alone a good understanding of exactly how this disease destroys memory skills. That’s why, in this first post in my series highlighting some of the awardees in NIH Common Fund’s High-Risk, High-Reward Research Program, I’m excited to introduce a young scientist who’s using some cool technology to tackle this formidable challenge: Christine Ann Denny.
A winner of a 2013 NIH Director’s Early Independence Awards (often called the “skip-the-postdoc” award), Denny has developed a technique to label the cells that encode individual memories in the brains of mice. That’s right: she tags the nerve cells that build these memories, the neurons, with a fluorescent molecule that glows. Continue reading →
Caption: One of the many faces of NIH-supported innovation, Stanford’s Christina Smolke is exploring how synthetic biology and microbes can be used to produce new drugs. She is a 2012 Pioneer Award winner. Credit: Linda Cicero/Stanford News Service
High-risk research isn’t for the faint of heart. It’s for fearless researchers who envision and develop innovative projects with unconventional approaches that, if successful, may yield great leaps in our understanding of health problems and/or biological mechanisms. It takes nerve and creativity to conceive such projects—and, often, special support to bring them to fruition. And, as the name implies, there is a significant chance of failure.
Caption: Optogenetic stimulation using laser pulses lights up the prelimbic cortex Source: Courtesy of Billy Chen and Antonello Bonci
Wow—there is a lot of exciting brain research in progress, and this week is no exception. A team here at NIH, collaborating with scientists at the University of California in San Francisco, delivered harmless pulses of laser light to the brains of cocaine-addicted rats, blocking their desire for the narcotic.
If that sounds a bit way out, I can assure you the approach is based on some very solid evidence suggesting that people—and rats—are more vulnerable to addiction when a region of their brain in the prefrontal cortex isn’t functioning properly. Brain imaging studies show that rat and human addicts have less activity in the region compared with healthy individuals; and chronic cocaine use makes the problem of low activity even worse. The prefrontal cortex is critical for decision-making, impulse control, and behavior; it helps you weigh the negative consequences of drug use. Continue reading →