Vascular dysfunction in human and rat cirrhosis: Role of receptor‐desensitizing and calcium‐sensitizing proteins
Martin Hennenberg, Jonel Trebicka, Erwin Biecker, Michael Schepke, Tilman Sauerbruch, Jörg Heller – 26 January 2007 – In cirrhosis, vascular hypocontractility leads to vasodilation and contributes to portal hypertension. Impaired activation of contractile pathways contributes to vascular hypocontractility. Angiotensin II type 1 receptors (AT1‐Rs) are coupled to the contraction‐mediating RhoA/Rho‐kinase pathway and may be desensitized by phosphorylation through G‐protein‐coupled receptor kinases (GRKs) and binding of β‐arrestin‐2.