title: Natural killer cell activity in patients with hepatocellular carcinoma: a new prognostic indicator after hepatectomy.
abstract: BACKGROUND
  Natural cytotoxicity mediated by natural killer (NK) cells is believed to play an important role in host anticancer defense mechanisms. The aim of this study was to examine the prognostic significance of NK cell activity after hepatectomy in patients with hepatocellular carcinoma.
  
  
  METHODS
  The NK cell activity in 210 patients with hepatocellular carcinoma was measured and evaluated in relation to clinicopathologic variables using univariate and multivariate analyses.
  
  
  RESULTS
  The NK cell activity was decreased significantly in hepatocellular carcinoma patients compared with the control groups (P < 0.001). No correlation was observed between NK cell activity and the clinicopathologic variables. Multivariate analyses indicated that NK cell activity as well as intrahepatic metastases, platelet count, and serum albumin level were independent prognostic factors.
  
  
  CONCLUSIONS
  This study suggests that the preoperative NK cell activity will help predict recurrence and prognosis after hepatectomy in patients with hepatocellular carcinoma.
authors.affiliation: Department of Gastroenterological Surgery, National Kyushu Cancer Center, Fukuoka, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Taketomi
authors.forename: M
authors.initials: M
authors.lastname: Shimada
authors.forename: K
authors.initials: K
authors.lastname: Shirabe
authors.forename: K
authors.initials: K
authors.lastname: Kajiyama
authors.forename: T
authors.initials: T
authors.lastname: Gion
authors.forename: K
authors.initials: K
authors.lastname: Sugimachi
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000276:immunology* / Q000473:pathology / Q000601:surgery; D005260:Female; D006498:Hepatectomy; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D008113:Liver Neoplasms / Q000276:immunology* / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011379:Prognosis; D015996:Survival Rate