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2015 ; 5
(ä): 14573
Nephropedia Template TP
gab.com Text
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English Wikipedia
Statins activate the canonical hedgehog-signaling and aggravate non-cirrhotic
portal hypertension, but inhibit the non-canonical hedgehog signaling and
cirrhotic portal hypertension
#MMPMID26412302
Uschner FE
; Ranabhat G
; Choi SS
; Granzow M
; Klein S
; Schierwagen R
; Raskopf E
; Gautsch S
; van der Ven PF
; Fürst DO
; Strassburg CP
; Sauerbruch T
; Diehl AM
; Trebicka J
Sci Rep
2015[Sep]; 5
(ä): 14573
PMID26412302
show ga
Liver cirrhosis but also portal vein obstruction cause portal hypertension (PHT)
and angiogenesis. This study investigated the differences of angiogenesis in
cirrhotic and non-cirrhotic PHT with special emphasis on the canonical (Shh/Gli)
and non-canonical (Shh/RhoA) hedgehog pathway. Cirrhotic (bile duct ligation/BDL;
CCl4 intoxication) and non-cirrhotic (partial portal vein ligation/PPVL) rats
received either atorvastatin (15 mg/kg; 7d) or control chow before sacrifice.
Invasive hemodynamic measurement and Matrigel implantation assessed angiogenesis
in vivo. Angiogenesis in vitro was analysed using migration and tube formation
assay. In liver and vessel samples from animals and humans, transcript expression
was analyzed using RT-PCR and protein expression using Western blot. Atorvastatin
decreased portal pressure, shunt flow and angiogenesis in cirrhosis, whereas
atorvastatin increased these parameters in PPVL rats. Non-canonical Hh was
upregulated in experimental and human liver cirrhosis and was blunted by
atorvastatin. Moreover, atorvastatin blocked the non-canonical Hh-pathway RhoA
dependently in activated hepatic steallate cells (HSCs). Interestingly, hepatic
and extrahepatic Hh-pathway was enhanced in PPVL rats, which resulted in
increased angiogenesis. In summary, statins caused contrary effects in cirrhotic
and non-cirrhotic portal hypertension. Atorvastatin inhibited the non-canonical
Hh-pathway and angiogenesis in cirrhosis. In portal vein obstruction, statins
enhanced the canonical Hh-pathway and aggravated PHT and angiogenesis.