Document Detail

Increased sensitivity to food cues in the fasted state and decreased inhibitory control in the satiated state in the overweight.
MedLine Citation:
PMID:  23364016     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Flexibility of food reward-related brain signaling (FRS) between food and nonfood stimuli may differ between overweight and normal-weight subjects and depend on a fasted or satiated state.
OBJECTIVE: The objective was to assess this flexibility in response to visual food and nonfood cues.
DESIGN: Twenty normal-weight [mean ± SEM BMI (in kg/m(2)) = 22.7 ± 0.2; mean ± SEM age = 22.4 ± 0.4 y] and 20 overweight (BMI = 28.1 ± 0.3; age = 24.0 ± 0.7 y) participants completed 2 fMRI scans. Subjects arrived in a fasted state and consumed a breakfast consisting of 20% of subject-specific energy requirements between 2 successive scans. A block paradigm and a food > nonfood contrast was used to determine FRS.
RESULTS: An overall stimulus × condition × subject group effect was observed in the anterior cingulate cortex (ACC) (P < 0.006, F((1,38)) = 9.12) and right putamen (P < 0.006, F((1,38)) = 9.27). In all participants, FRS decreased from the fasted to the satiated state in the cingulate (P < 0.005, t((39)) = 3.15) and right prefrontal cortex (PFC) (P < 0.006, t((39)) = 3.00). In the fasted state, they showed FRS in the PFC (P < 0.004, t((39)) = 3.17), left insula (P < 0.009, t((39)) = 2.95), right insula (P < 0.005, t((39)) = 3.12), cingulate cortex (P < 0.004, t((39)) = 3.21), and thalamus (P < 0.006, t((39)) = 2.96). In the satiated state, FRS was limited to the left insula (P < 0.005, t((39)) = 3.21), right insula (P < 0.006, t((39)) = 3.04), and cingulate cortex (P < 0.005, t((39)) = 3.15). Regarding subject group, in the fasted state, FRS in the ACC was more pronounced in overweight than in normal-weight subjects (P < 0.005, F((1,38)) = 9.71), whereas in the satiated state, FRS was less pronounced in overweight than in normal-weight subjects in the ACC (P < 0.006, F((1,38)) = 9.18) and PFC (P < 0.006, F((1,38)) = 8.86), which suggests lower inhibitory control in the overweight.
CONCLUSION: FRS was higher in the overweight in the satiated state; however, when sufficiently satiated, the overweight showed decreased inhibitory control signalling, which facilitates overeating. This trial was registered in the Dutch clinical trial register as NTR2174.
Mieke J I Martens; Juriaan M Born; Sofie G T Lemmens; Leila Karhunen; Armin Heinecke; Rainer Goebel; Tanja C Adam; Margriet S Westerterp-Plantenga
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2013-01-30
Journal Detail:
Title:  The American journal of clinical nutrition     Volume:  97     ISSN:  1938-3207     ISO Abbreviation:  Am. J. Clin. Nutr.     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-02-21     Completed Date:  2013-04-15     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  0376027     Medline TA:  Am J Clin Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  471-9     Citation Subset:  AIM; IM    
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MeSH Terms
Body Mass Index
Cerebral Cortex / physiology
Fasting / physiology*
Hunger / physiology
Magnetic Resonance Imaging / methods
Overweight / therapy*
Prefrontal Cortex / physiology
Satiation / physiology*
Young Adult
Comment In:
Am J Clin Nutr. 2013 Mar;97(3):451-2   [PMID:  23364013 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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