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Leptin regulates striatal regions and human eating behavior.


ABSTRACT: Studies of the fat-derived hormone leptin have provided key insights into the molecular and neural components of feeding behavior and body weight regulation. An important challenge lies in understanding how the rewarding properties of food interact with, and can override, physiological satiety signals and promote overeating. We used functional magnetic resonance imaging to measure brain responses in two human patients with congenital leptin deficiency who were shown images of food before and after 7 days of leptin replacement therapy. Leptin was found to modulate neural activation in key striatal regions, suggesting that the hormone acts on neural circuits governing food intake to diminish the perception of food reward while enhancing the response to satiety signals generated during food consumption.

SUBMITTER: Farooqi IS 

PROVIDER: S-EPMC3838941 | biostudies-literature | 2007 Sep

REPOSITORIES: biostudies-literature

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Leptin regulates striatal regions and human eating behavior.

Farooqi I Sadaf IS   Bullmore Edward E   Keogh Julia J   Gillard Jonathan J   O'Rahilly Stephen S   Fletcher Paul C PC  

Science (New York, N.Y.) 20070809 5843


Studies of the fat-derived hormone leptin have provided key insights into the molecular and neural components of feeding behavior and body weight regulation. An important challenge lies in understanding how the rewarding properties of food interact with, and can override, physiological satiety signals and promote overeating. We used functional magnetic resonance imaging to measure brain responses in two human patients with congenital leptin deficiency who were shown images of food before and aft  ...[more]

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