CYP27A1 and hepatocellular carcinoma: In contrast to the normal group, the oxidative stress related proteins Cytochrome P450 17A1(CYP27A1), Fructose-bisphosphate aldolase B (ALDOB), Stress-70 protein (GRP75), Ornithine carbamoyltransferase (OTC) and so on were decreased in the HCC group.