Catar, R.A.* ; Müller, G.* ; Brandt, A.* ; Langbein, H.* ; Brunssen, C.* ; Goettsch, C.* ; Frenzel, A.* ; Hofmann, A.* ; Goettsch, W.* ; Steinbronn, N.* ; Strasser, R.H.* ; Schubert, U.* ; Ludwig, B.* ; Bornstein, S.R.* ; Morawietz, H.*
    
 
    
        
Increased gene expression of the cardiac endothelin system in obese mice.
    
    
        
    
    
        
        Horm. Metab. Res. 47, 509-515 (2015)
    
    
		
		
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			Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
		
     
    
		
		
			
				Obesity is a well-known risk factor of atherosclerosis and heart failure. In the human heart, a local endothelin system containing prepro-endothelin-1, endothelin-converting enzyme-1, and endothelin receptors A and B has been described. The endothelin system is activated in heart failure; however, the impact of obesity on the cardiac endothelin system is unknown. In this study, 18-week-old male C57BL/6 mice fed either a control diet or a high-fat diet for 10 weeks were analyzed. High-fat diet significantly increased the body weight of the animals and augmented low-density lipoprotein, high-density lipoprotein, and cholesterol plasma levels, compared to control. The animal groups showed no significant differences in left ventricular size or function (heart rate, ejection fraction, fractional shortening, left ventricular posterior wall thickness, cardiac output) after control or high-fat diet. We did not observe signs of cardiac hypertrophy or changes in markers of cardiac fibrosis in these heart samples. The cardiac expression of prepro-endothelin-1 mRNA, endothelin-converting enzyme-1 mRNA, and protein and endothelin receptors A and B mRNA was increased in 18-week-old obese C57BL/6 mice compared to animals with normal weight (p<0.05 vs. control). Furthermore, endothelin-1 plasma levels showed an increasing trend. In conclusion, an increased expression of genes of the endothelin system was observed in the hearts of 18-week-old mice after high-fat diet, possibly contributing to later cardiovascular complications of obesity.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
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        englisch
    
 
    
        Veröffentlichungsjahr
        2015
    
 
    
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        0
    
 
    
    
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        0018-5043
    
 
    
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        1439-4286
    
 
    
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	    Band: 47,  
	    Heft: 7,  
	    Seiten: 509-515 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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        Peer reviewed
    
 
    
        Institut(e)
        Institute of Pancreatic Islet Research (IPI)
    
 
    
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        Erfassungsdatum
        2015-12-31