Document Detail

Association of leptin with food cue-induced activation in human reward pathways.
MedLine Citation:
PMID:  22566584     Owner:  NLM     Status:  MEDLINE    
CONTEXT: Overlapping neurobiological pathways between obesity and addiction disorders are currently in discussion. Whereas the hypothalamic regulation of energy homeostasis by endocrine feedback signals has been widely investigated, its interplay with mesolimbic reward-associated pathways represents a rich field of future research.
OBJECTIVE: To assess changes in regional brain activation in response to food-related cues in association with body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) and the plasma concentration of the appetite-regulating peptide leptin.
DESIGN: Case-control study.
SETTING: Academic addiction and brain imaging center, Central Institute of Mental Health, Mannheim, Germany.
PARTICIPANTS: Twenty-one obese subjects (BMI >30) and 23 age- and sex-matched nonobese control subjects (BMI 18.5-24.0) recruited by advertisements.
MAIN OUTCOME MEASURES: Regional brain activation (blood oxygen level-dependent response) in response to visual cue presentation and association of the brain activation with BMI and plasma leptin concentration.
RESULTS: Significant positive relationships were observed for food cue-induced brain activations in the ventral striatum in association with the plasma concentration of leptin (r = 0.27; P = .04) and with BMI (r = 0.47; P = .001).
CONCLUSIONS: Data suggest a physiological role of satiety factors in modulating the responsivity of mesolimbic circuits to food cues. Moreover, an altered homeostatic feedback regulation of reward pathways might explain addictionlike behavior and the inability of obese patients to adapt food intake to physiological needs.
Martin Grosshans; Christian Vollmert; Sabine Vollstädt-Klein; Heike Tost; Saskia Leber; Patrick Bach; Mira Bühler; Christoph von der Goltz; Jochen Mutschler; Sabine Loeber; Derik Hermann; Klaus Wiedemann; Andreas Meyer-Lindenberg; Falk Kiefer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Archives of general psychiatry     Volume:  69     ISSN:  1538-3636     ISO Abbreviation:  Arch. Gen. Psychiatry     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-05-08     Completed Date:  2012-06-27     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  0372435     Medline TA:  Arch Gen Psychiatry     Country:  United States    
Other Details:
Languages:  eng     Pagination:  529-37     Citation Subset:  AIM; IM    
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MeSH Terms
Appetite Regulation / physiology
Body Mass Index
Brain / physiology,  physiopathology
Case-Control Studies
Leptin / blood*,  physiology
Magnetic Resonance Imaging
Obesity / physiopathology*
Photic Stimulation
Reg. No./Substance:

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