Abstract
Hepatocellular carcinoma (HCC) is a primary malignancy of the liver with a high worldwide prevalence and poor prognosis. Previous data, by Affymetrix microarray analysis, has shown a decrease in genes involved in phospholipid catabolism, fatty acid catabolism, choline metabolism, and bile acid metabolism in HCC compared with control tissue. The aim of this study was to better understand metabolic processes in relation to the development of HCC. Tumor, plasma, and bile samples were collected at the time of hepatic resection for HCC. All bile specimens were collected from the gallbladder at the beginning of the case. Normal bile and plasma were collected from patients undergoing cholecystectomy for non-neoplastic disease. Liver biopsy samples were taken from both tumor and adjacent normal tissue. Phospholipid levels were evaluated by enzyme-linked immunosorbent assay (ELISA) and high performance thin layer chromatography (HPTLC). Targeted phospholipid analysis by HPTLC and ELISA showed a modified choline metabolic profile within the liver, bile, and serum, culminating in an increased synthesis of lysophosphatidic acid (LPA). Choline was significantly increased in tumor tissue; lysophosphatidylcholine (LPC) was increased within bi...Continue Reading
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