title: Assessment of blood flow in hepatocellular carcinoma: correlations of computed tomography perfusion imaging and circulating angiogenic factors.
abstract: Hepatocellular carcinoma (HCC) is a highly vascular tumor through the process of angiogenesis. To evaluate more non-invasive techniques for assessment of blood flow (BF) in HCC, this study examined the relationships between BF of HCC measured by computer tomography (CT) perfusion imaging and four circulating angiogenic factors in HCC patients. Interleukin 6 (IL-6), interleukin 8 (IL-8), vascular endothelial growth factor (VEGF), and platelet derived growth factor (PDGF) in plasma were measured using Bio-Plex multiplex immunoassay in 21 HCC patients and eight healthy controls. Circulating IL-6, IL-8 and VEGF showed higher concentrations in HCC patients than in controls (p < 0.05), and predicted HCC occurrence better than chance (p < 0.01). Twenty-one patients with HCC received 21-phase liver imaging using a 64-slice CT. Total BF, arterial BF, portal BF, arterial fraction (arterial BF/total BF) of the HCC and surrounding liver parenchyma, and HCC-parenchyma ratio were measured using a dual-vessel model. After analyzing the correlations between BF in HCC and four circulating angiogenic factors, we found that the HCC-parenchyma ratio of arterial BF showed a significantly positive correlation with the level of circulating IL-8 (p < 0.05). This circulating biomarker, IL-8, provides a non-invasive tool for assessment of BF in HCC.
authors.affiliation: National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan. ywc@nhri.org.tw
authors.forename: Ya-Wen
authors.initials: YW
authors.lastname: Chen
authors.forename: Huay-Ben
authors.initials: HB
authors.lastname: Pan
authors.forename: Hui-Hwa
authors.initials: HH
authors.lastname: Tseng
authors.forename: Yu-Ting
authors.initials: YT
authors.lastname: Hung
authors.forename: Jer-Shyung
authors.initials: JS
authors.lastname: Huang
authors.forename: Chen-Pin
authors.initials: CP
authors.lastname: Chou
mesh_terms: D000328:Adult; D043925:Angiogenesis Inducing Agents / Q000097:blood*; D006528:Carcinoma, Hepatocellular / Q000097:blood* / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008113:Liver Neoplasms / Q000097:blood* / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011859:Radiography
chemical_list: D043925:Angiogenesis Inducing Agents