Ludwig, B.* ; Rotem, A.* ; Schmid, J.* ; Weir, G.C.* ; Colton, C.K.* ; Brendel, M.D.* ; Neufeld, T.P.* ; Block, N.L.* ; Yavriyants, K.* ; Steffen, A.* ; Ludwig, S.* ; Chavakis, T.* ; Reichel, A.* ; Azarov, D.* ; Zimmermann, B.* ; Maimon, S.* ; Balyura, M.* ; Rozenshtein, T.* ; Shabtay, N.* ; Vardi, P.* ; Bloch, K.* ; de Vos, P.* ; Schally, A.V.* ; Bornstein, S.R.* ; Barkai, U.*
    
 
    
        
Improvement of islet function in a bioartificial pancreas by enhanced oxygen supply and growth hormone releasing hormone agonist.
    
    
        
    
    
        
        Proc. Natl. Acad. Sci. U.S.A. 109, 5022-5027 (2012)
    
    
		
		
		  DOI
 DOI
		  PMC
 PMC
		
		
		
		  
		
		
			Open Access Gold möglich sobald Verlagsversion bei der ZB eingereicht worden ist.
		
     
    
		
		
			
				Islet transplantation is a feasible therapeutic alternative for metabolically labile patients with type 1 diabetes. The primary therapeutic target is stable glycemic control and prevention of complications associated with diabetes by reconstitution of endogenous insulin secretion. However, critical shortage of donor organs, gradual loss in graft function over time, and chronic need for immunosuppression limit the indication for islet transplantation to a small group of patients. Here we present a promising approach to address these limitations by utilization of a macrochamber specially engineered for islet transplantation. The s.c. implantable device allows for controlled and adequate oxygen supply and provides immunological protection of donor islets against the host immune system. The minimally invasive implantable chamber normalized blood glucose in streptozotocin-induced diabetic rodents for up to 3 mo. Sufficient graft function depended on oxygen supply. Pretreatment with the growth hormone-releasing hormone (GHRH) agonist, JI-36, significantly enhanced graft function by improving glucose tolerance and increasing β-cell insulin reserve in rats thereby allowing for a reduction of the islet mass required for metabolic control. As a result of hypervascularization of the tissue surrounding the device, no relevant delay in insulin response to glucose changes has been observed. Consequently, this system opens up a fundamental strategy for therapy of diabetes and may provide a promising avenue for future approaches to xenotransplantation.
			
			
				
			
		 
		
			
				
					
					Impact Factor
					Scopus SNIP
					Web of Science
Times Cited
					Scopus
Cited By
					
					Altmetric
					
				 
				
			 
		 
		
     
    
        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        
    
 
    
        Keywords plus
        
    
 
    
    
        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2012
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        0
    
 
    
    
        ISSN (print) / ISBN
        0027-8424
    
 
    
        e-ISSN
        1091-6490
    
 
    
        ISBN
        
    
 
    
        Bandtitel
        
    
 
    
        Konferenztitel
        
    
 
	
        Konferzenzdatum
        
    
     
	
        Konferenzort
        
    
 
	
        Konferenzband
        
    
 
     
		
    
        Quellenangaben
        
	    Band: 109,  
	    Heft: 13,  
	    Seiten: 5022-5027 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
            Reihe
            
        
 
        
            Verlag
            National Academy of Sciences
        
 
        
            Verlagsort
            
        
 
	
        
            Tag d. mündl. Prüfung
            0000-00-00
        
 
        
            Betreuer
            
        
 
        
            Gutachter
            
        
 
        
            Prüfer
            
        
 
        
            Topic
            
        
 
	
        
            Hochschule
            
        
 
        
            Hochschulort
            
        
 
        
            Fakultät
            
        
 
    
        
            Veröffentlichungsdatum
            0000-00-00
        
 
         
        
            Anmeldedatum
            0000-00-00
        
 
        
            Anmelder/Inhaber
            
        
 
        
            weitere Inhaber
            
        
 
        
            Anmeldeland
            
        
 
        
            Priorität
            
        
 
    
        Begutachtungsstatus
        Peer reviewed
    
 
    
        Institut(e)
        Institute of Pancreatic Islet Research (IPI)
    
 
    
        POF Topic(s)
        
    
 
    
        Forschungsfeld(er)
        
    
 
    
        PSP-Element(e)
        
    
 
    
        Förderungen
        
    
 
    
        Copyright
        
    
 	
    
    
    
        Erfassungsdatum
        2012-12-31