The Serum Endothelın-1 Level in Steatosıs and NASH, and Its Relatıon wıth Severıty of Lıver Fıbrosıs

Seren Ozenirler; Sehri Elbeg; Gulen Akyol
October 2007
Digestive Diseases & Sciences;Oct2007, Vol. 52 Issue 10, p2622
Academic Journal
Abstract  Endothelin-1 (ET-1) is known to play an important role in hepatic fibrosis. ET-1 is also a mediator that is elevated in conditions such as insulin resistance, hyperglycemia, oxidative stress, and endothelial cell dysfunction. In this study, we investigated whether ET-1 has a role in determining the severity of liver fibrosis in NASH. Also, the relation between ALT levels, obesity, diabetes, and AST/ALT ratio and fibrosis and ET-1 level was sought. A total of 92 patients were enrolled in the study. The patients were categorized into three groups: group 1, patients with elevated transaminase levels who were diagnosed as NASH by liver biopsy (n=40); group II, patients with only hepatosteatosis determined by biopsy but having elevated transaminase levels (n=12); and group III, patients with hepatosteatosis observed by ultrasonography, having normal transaminase levels (n=40). The serum ET-1 level was measured by an appropriate ELISA kit for all patients. Mean serum ET-1 level was statistically significantly higher in the NASH group compared to the other two groups (15.56�4.63 vs 6.75�2.46 and 5.74�2.34 μmol/L; P P


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