Abstract
Evidence has shown that oestrogen suppresses lipids deposition in the liver of mammals. However, the molecular mechanism of oestrogen action in hepatic steatosis of geese liver has yet to be determined. This study aimed to investigate the effect of oestrogen on lipid homeostasis at different states of geese hepatocytes in vitro. The results showed that an in vitro model of hepatic steatosis was induced by 1.5 mM sodium oleate via detecting the viability of hepatocytes and content of lipids. When the normal hepatocytes were administrated with different concentrations of oestrogen (E2 ), the expression levels of diacylglycerol acyltransferase 2 (DGAT2), microsomal triglyceride transfer protein (MTTP) and oestrogen receptors (ERs, alpha and beta) were up-regulated only at high concentrations of E2 , whereas the lipid content was not a significant difference. In goose hepatocytes of hepatic steatosis, however, the expression levels of MTTP, apolipoprotein B (apoB) and ERα/β significantly increased at 10-7 or 10-6 M E2 . Meanwhile, the lipids content significantly increased at 10-9 and 10-8 M E2 and decreased at 80 µM E2 . Further heatmap analysis showed that ERα was clustered with apoB and MTTP in either normal hepatocytes or tha...Continue Reading
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