Hankir, M.K.* ; Kranz, M.* ; Keipert, S. ; Weiner, J.* ; Andreasen, S.G.* ; Kern, M.J.* ; Patt, M.* ; Kloeting, N.* ; Heiker, J.T.* ; Brust, P.* ; Hesse, S.* ; Jastroch, M. ; Fenske, W.K.*
     
 
    
        
Dissociation between brown adipose tissue 18F-FDG uptake and thermogenesis in uncoupling protein 1 deficient mice.
    
    
        
    
    
        
        J. Nucl. Med. 58, 1100-1103 (2017)
    
    
    
		
		
			
				F-18-FDG PET imaging is routinely used to investigate brown adipose tissue (BAT) thermogenesis, which requires mitochondrial uncoupling protein 1 (UCP1). It remains uncertain, however, whether BAT F-18-FDG uptake is a reliable surrogate measure of UCP1-mediated heat production. Methods: UCP1 knockout (KO) and wild-type (WT) mice housed at thermoneutrality were treated with the selective beta 3 adrenergic receptor agonist CL 316, 243 and under-went metabolic cage, infrared thermal imaging and F-18-FDG PET/MRI experiments. Primary brown adipocytes were additionally examined for their bioenergetics by extracellular flux analysis as well as their uptake of 2-deoxy-H-3-glucose. Results: In response to CL 316, 243 treatments, oxygen consumption, and BAT thermogenesis were diminished in UCP1 KO mice, but BAT F-18-FDG uptake was fully retained. Isolated UCP1 KO brown adipocytes exhibited defective induction of uncoupled respiration whereas their glycolytic flux and 2-deoxy-H-3-glucose uptake rates were largely unaffected. Conclusion: Adrenergic stimulation can increase BAT F-18-FDG uptake independently of UCP1 thermogenic function.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Animal Imaging ; Neuroendocrine ; Pet/mri ; Brown Adipose Tissue ; Glucose Metabolism ; Thermogenesis ; Uncoupling Protein 1; Glucose-utilization; Adipocytes; Mouse; Ucp1; Obesity
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2017
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2017
    
 
    
    
        ISSN (print) / ISBN
        0161-5505
    
 
    
        e-ISSN
        1535-5667
    
 
    
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	    Band: 58,  
	    Heft: 7,  
	    Seiten: 1100-1103 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Society of Nuclear Medicine and Molecular Imaging
        
 
        
            Verlagsort
            Reston
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30201 - Metabolic Health
90000 - German Center for Diabetes Research
    
 
    
        Forschungsfeld(er)
        Helmholtz Diabetes Center
    
 
    
        PSP-Element(e)
        G-502200-001
G-501900-221
    
 
    
        Förderungen
        
    
 
    
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        Erfassungsdatum
        2017-07-27