title: Insulin-like growth factor 1 in hepatocellular carcinoma and metastatic liver cancer in men.
abstract: The insulin-like growth factor (IGF) axis has important autocrine, paracrine, and endocrine roles in the promotion of growth. Alterations of the IGF system have recently been implicated in the pathogenesis of several malignancies, but the relation to hepatocellular carcinoma (HCC) risk is unclear. To address this issue, we used an immunoradiometric assay to quantify IGF-1 levels in serum samples in a hospital-based, case-control study in Greece. The study subjects were all men and included 53 patients with HCC positive for hepatitis B and/or hepatitis C virus infections, 20 virus-negative HCC patients, 25 virus-negative patients with metastatic liver cancer (MLC), and 111 virus-negative control subjects. Data were analyzed by multiple linear regression, using IGF-1 as the dependent variable. The mean value of IGF-1 was 65.9 ng/ml among virus-positive HCC patients, 79.5 ng/ml among virus-negative HCC patients, 110.8 ng/ml among patients with MLC, and 174.7 ng/ml among hospital controls. After controlling for the degree of liver damage, as assessed by prothrombin time and serum albumin level, the reduction in IGF-1 level among HCC patients was found to be more than could be attributed to liver damage alone. This finding may have both diagnostic and pathophysiological implications.
authors.affiliation: Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts 02115, USA. sstuver@hsph.harvard.edu
authors.forename: S O
authors.initials: SO
authors.lastname: Stuver
authors.forename: H
authors.initials: H
authors.lastname: Kuper
authors.forename: A
authors.initials: A
authors.lastname: Tzonou
authors.forename: P
authors.initials: P
authors.lastname: Lagiou
authors.forename: E
authors.initials: E
authors.lastname: Spanos
authors.forename: C C
authors.initials: CC
authors.lastname: Hsieh
authors.forename: C
authors.initials: C
authors.lastname: Mantzoros
authors.forename: D
authors.initials: D
authors.lastname: Trichopoulos
mesh_terms: D000328:Adult; D000368:Aged; D001769:Blood / Q000378:metabolism; D006528:Carcinoma, Hepatocellular / Q000150:complications / Q000378:metabolism*; D016022:Case-Control Studies; D006509:Hepatitis B / Q000150:complications / Q000378:metabolism; D006526:Hepatitis C / Q000150:complications / Q000378:metabolism; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000096:biosynthesis* / Q000502:physiology; D008099:Liver / Q000378:metabolism; D008113:Liver Neoplasms / Q000150:complications / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors
chemical_list: D007334:Insulin-Like Growth Factor I