The effect of hunger state on hypothalamic functional connectivity in response to food cues.
    
    
        
    
    
        
        Hum. Brain Mapp. 44, 418-428 (2023)
    
    
    
      
      
	
	    The neural underpinnings of the integration of internal and external cues that reflect nutritional status are poorly understood in humans. The hypothalamus is a key integrative area involved in short- and long-term energy intake regulation. Hence, we examined the effect of hunger state on the hypothalamus network using functional magnetic resonance imaging. In a multicenter study, participants performed a food cue viewing task either fasted or sated on two separate days. We evaluated hypothalamic functional connectivity (FC) using psychophysiological interactions during high versus low caloric food cue viewing in 107 adults (divided into four groups based on age and body mass index [BMI]; age range 24-76 years; BMI range 19.5-41.5 kg/m2 ). In the sated compared to the fasted condition, the hypothalamus showed significantly higher FC with the bilateral caudate, the left insula and parts of the left inferior frontal cortex. Interestingly, we observed a significant interaction between hunger state and BMI group in the dorsolateral prefrontal cortex (DLPFC). Participants with normal weight compared to overweight and obesity showed higher FC between the hypothalamus and DLPFC in the fasted condition. The current study showed that task-based FC of the hypothalamus can be modulated by internal (hunger state) and external cues (i.e., food cues with varying caloric content) with a general enhanced communication in the sated state and obesity-associated differences in hypothalamus to DLPFC communication. This could potentially promote overeating in persons with obesity.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Fmri ; Food Cue Reactivity ; Functional Connectivity ; Hunger ; Insulin Resistance ; Obesity ; Satiety
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2023
    
 
    
        Prepublished in Year
        2022
    
 
    
        HGF-reported in Year
        2022
    
 
    
    
        ISSN (print) / ISBN
        1065-9471
    
 
    
        e-ISSN
        1097-0193
    
 
    
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	    Volume: 44,  
	    Issue: 2,  
	    Pages: 418-428 
	    Article Number: ,  
	    Supplement: ,  
	
    
 
    
        
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            Wiley
        
 
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        90000 - German Center for Diabetes Research
    
 
    
        Research field(s)
        Helmholtz Diabetes Center
    
 
    
        PSP Element(s)
        G-502400-001
    
 
    
        Grants
        German Center for Diabetes Research
Federal Ministry of Education and Research
European Union Seventh Framework Programme
    
 
    
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        Erfassungsdatum
        2022-11-21