HOME >> MEDICINE >> NEWS
Scientists find link between dopamine and obesity

Upton, NY -- Dopamine, a brain chemical associated with addiction to cocaine, alcohol, and other drugs, may also play an important role in obesity. According to a study by scientists at the U.S. Department of Energy's Brookhaven National Laboratory, obese people have fewer receptors for dopamine, a neurotransmitter that helps produce feelings of satisfaction and pleasure. The findings, which will appear in the February 3, 2001 issue of The Lancet, imply that obese people may eat more to try to stimulate the dopamine "pleasure" circuits in their brains, just as addicts do by taking drugs.

"The results from this study suggest that strategies aimed at improving dopamine function might be beneficial in the treatment of obese individuals," says physician Gene-Jack Wang, the lead scientist on the study.

Brookhaven scientists have done extensive research showing that dopamine plays an important role in drug addiction. Among other things, theyve found that addictive drugs increase the level of dopamine in the brain, and that addicts have fewer dopamine receptors than normal subjects.

"Since eating, like the use of addictive drugs, is a highly reinforcing behavior, inducing feelings of gratification and pleasure, we suspected that obese people might have abnormalities in brain dopamine activity as well," says psychiatrist Nora Volkow, who was also involved in the study.

To test this hypothesis, the scientists measured the number of dopamine receptors in the brains of ten severely obese individuals and ten normal controls. Their method consisted of giving each volunteer subject an injection containing a radiotracer, a radioactive chemical "tag" designed to bind to dopamine receptors in the brain. Then, the researchers scanned the subjects' brains using a positron emission tomography (PET ) camera. The PET camera picks up the radioactive signal of the tracer and shows where it is bound to dopamine receptors in the brain. The strength of the signal in
'"/>

Contact: Dennis Tartaglia
dennist@mbooth.com
212-481-7000
DOE/Brookhaven National Laboratory
31-Jan-2001


Page: 1 2

Related medicine news :

1. Scientists replicate hepatitis C virus in laboratory
2. Scientists identify brain regions that decide where we look
3. Scientists uncover new mechanism for the amygdala in fear recognition
4. Scientists identify protein critical to melanoma growth
5. Scientists discover recipe for life: eating the Polymeal cuts heart disease by 76%
6. Scientists study fish oil diet in bid to cut heart attack risks
7. Scientists discover enzyme crucial to the transportation of proteins within cells
8. Scientists turn on the gender lens on cardiovascular disease research
9. Scientists stalk PPAR-gamma, find novel cancer connection
10. Scientists align billion-year-old protein with embryonic heart defects
11. Scientists pinpoint flaw, offer new promise for stroke treatment

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/20/2017)... ... ... “Code Word: Chocolate Biscuit”: a biographical account following a man who went on to support ... author, Marlyn Ivey, born in Lynn Haven, Florida and at the age of 5, his ... of age, he joined the Navy and got married right out of boot camp. ...
(Date:1/20/2017)... ... January 20, 2017 , ... “Christmas in Suffolk”: ... published author, Sara Seymour, who lives in Lafayette, Indiana where she works in a ... iced coffees and writes. , Published by Christian Faith Publishing, Sara Seymour’s new book ...
(Date:1/20/2017)... ... 20, 2017 , ... “The Land of More and More”: a brilliant ... hunger, and shares the simple and achievable answer. “The Land of More and More” ... Fairview Missionary Church in Angola, Indiana where he works with the children’s ministry department. ...
(Date:1/19/2017)... ... January 19, 2017 , ... Aerolib Healthcare ... for Clinical and Regulatory education for Physicians, Physician Advisors, Case managers, Utilization ... methodology of Disease Specific Documentation Improvement. , The Aerolib Learning Management System ...
(Date:1/19/2017)... ... ... the cold weather here, many people will have to clear snow with snow blowers or ... snow, but they can be dangerous when used incorrectly. That’s why Amica Insurance ... use of snow blowers:, , When removing wet snow or debris ...
Breaking Medicine News(10 mins):
(Date:1/19/2017)... 2017 Accuray Incorporated (Nasdaq: ARAY ... continue to set the bar for excellence in customer ... user satisfaction rating among radiation treatment delivery systems in ... Market Intelligence Briefing™. The most recent ratings trend also ... industry peers for 11 of the past 12 quarters. ...
(Date:1/19/2017)... CLEVELAND , Jan. 19, 2017 ViewRay, ... (DFG), a federal institution supporting research in ... installation and patient treatments at the University Clinic Heidelberg ... The MRIdian Linac program will be headed ... who also heads radiation oncology at the German Cancer ...
(Date:1/19/2017)... 19, 2017 New Review ... Address Motor Symptoms and Motor Complications in Mid- ... ... (Logo: http://photos.prnewswire.com/prnh/20151014/276718LOGO) C ... Neurological Review,2016;11(Suppl. 2): 2-15, http://www.touchneurology.com/articles/safinamide-new-therapeutic-option-address-motor-symptoms-and-motor-complications-mid-late ...
Breaking Medicine Technology:
Cached News: