Featured Research

from universities, journals, and other organizations

Binge eating curbed by deep brain stimulation in animal model

Date:
April 23, 2013
Source:
Perelman School of Medicine at the University of Pennsylvania
Summary:
Deep brain stimulation (DBS) in a precise region of the brain appears to reduce caloric intake and prompt weight loss in obese animal models, according to a new study.

Deep brain stimulation (DBS) in a precise region of the brain appears to reduce caloric intake and prompt weight loss in obese animal models, according to a new study led by researchers at the University of Pennsylvania. The study, reported in the Journal of Neuroscience, reinforces the involvement of dopamine deficits in increasing obesity-related behaviors such as binge eating, and demonstrates that DBS can reverse this response via activation of the dopamine type-2 receptor.

"Based on this research, DBS may provide therapeutic relief to binge eating, a behavior commonly seen in obese humans, and frequently unresponsive to other approaches," said senior author Tracy L. Bale, PhD, associate professor of neuroscience in Penn's School of Veterinary Medicine's Department of Animal Biology and in the Perelman School of Medicine's Department of Psychiatry. DBS is currently used to reduce tremors in Parkinson's disease and is under investigation as a therapy for major depression and obsessive-compulsive disorder.

Nearly 50 percent of obese people binge eat, uncontrollably consuming palatable highly calorie food within a short period of time. In this study, researchers targeted the nucleus accumbens, a small structure in the brain reward center known to be involved in addictive behaviors. Mice receiving the stimulation ate significantly less of the high fat food compared to mice not receiving DBS. Following stimulation, mice did not compensate for the loss of calories by eating more. However, on days when the device was turned off, binge eating resumed.

Researchers also tested the long-term effects of DBS on obese mice that had been given unlimited access to high-fat food. During four days of continuous stimulation, the obese mice consumed fewer calories and, importantly, their body weight dropped. These mice also showed improvement in their glucose sensitivity, suggestive of a reversal of type 2 diabetes.

"These results are our best evidence yet that targeting the nucleus accumbens with DBS may be able to modify specific feeding behaviors linked to body weight changes and obesity," Bale added.

"Once replicated in human clinical trials, DBS could rapidly become a treatment for people with obesity due to the extensive groundwork already established in other disease areas," said lead author Casey Halpern, MD, resident in the Department of Neurosurgery of the Perelman School of Medicine at the University of Pennsylvania.

The study was funded by the National Institutes of Health (DA022605 and HL091911). In addition to Drs. Bale and Halpern, Penn experts include Anand Tekriwal from the College of Arts and Sciences, John Wolf from Neurosurgery and Jeffrey Keating from Neurology. They were joined by colleagues in Psychology at the University of Buffalo.


Story Source:

The above story is based on materials provided by Perelman School of Medicine at the University of Pennsylvania. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. H. Halpern, A. Tekriwal, J. Santollo, J. G. Keating, J. A. Wolf, D. Daniels, T. L. Bale. Amelioration of Binge Eating by Nucleus Accumbens Shell Deep Brain Stimulation in Mice Involves D2 Receptor Modulation. Journal of Neuroscience, 2013; 33 (17): 7122 DOI: 10.1523/JNEUROSCI.3237-12.2013

Cite This Page:

Perelman School of Medicine at the University of Pennsylvania. "Binge eating curbed by deep brain stimulation in animal model." ScienceDaily. ScienceDaily, 23 April 2013. <www.sciencedaily.com/releases/2013/04/130423211714.htm>.
Perelman School of Medicine at the University of Pennsylvania. (2013, April 23). Binge eating curbed by deep brain stimulation in animal model. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2013/04/130423211714.htm
Perelman School of Medicine at the University of Pennsylvania. "Binge eating curbed by deep brain stimulation in animal model." ScienceDaily. www.sciencedaily.com/releases/2013/04/130423211714.htm (accessed August 22, 2014).

Share This




More Health & Medicine News

Friday, August 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Newsy (Aug. 21, 2014) An experimental drug used to treat Marburg virus in rhesus monkeys could give new insight into a similar treatment for Ebola. Video provided by Newsy
Powered by NewsLook.com
Two US Ebola Patients Leave Hospital Free of the Disease

Two US Ebola Patients Leave Hospital Free of the Disease

AFP (Aug. 21, 2014) Two American missionaries who were sickened with Ebola while working in Liberia and were treated with an experimental drug are doing better and have left the hospital, doctors say on August 21, 2014. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
Cadavers, a Teen, and a Medical School Dream

Cadavers, a Teen, and a Medical School Dream

AP (Aug. 21, 2014) Contains graphic content. He's only 17. But Johntrell Bowles has wanted to be a doctor from a young age, despite the odds against him. He was recently the youngest participant in a cadaver program at the Indiana University NW medical school. (Aug. 21) Video provided by AP
Powered by NewsLook.com
American Ebola Patients Released: What Cured Them?

American Ebola Patients Released: What Cured Them?

Newsy (Aug. 21, 2014) It's unclear whether the American Ebola patients' recoveries can be attributed to an experimental drug or early detection and good medical care. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins