Impaired ability of neutrophils to produce oxygen-derived free radicals in patients with chronic liver disease and hepatocellular carcinoma

Abstract

To evaluate whether neutrophil bactericidal function, the ability to produce oxygen-derived free radicals, is altered in patients with chronic liver disease, we measured chemiluminescence amplified by a luciferin analog (Cypridina luciferin analog-dependent chemiluminescence) and luminol (luminol-dependent chemiluminescence) in response to N-formyl-Met-Lue-Phe by neutrophils from patients with chronic liver diseases due to C and/or B type hepatitis: chronic active hepatitis, cirrhosis and hepatocellular carcinoma. Both Cypridina luciferin analog-dependent chemiluminescence and luminol-dependent chemiluminescence were significantly decreased in neutrophils from patients with chronic liver disease (hepatocellular carcinoma < cirrhosis < chronic active hepatitis) when they were compared with normal healthy subjects. The reduction of Cypridina luciferin analog-dependent chemiluminescence in chronic active hepatitis and cirrhosis was more sensitive than Cypridina luciferin analog-dependent chemiluminescence; however, in hepatocellular carcinoma, luminol-dependent chemiluminescence was more reduced than luminol-dependent chemiluminescence. Although there were not significant correlations between glutamic pyruvic transaminase and Cypridina luciferin analog-dependent chemiluminescence/luminol-dependent chemiluminescence, there were significant negative correlations between total bilirubin and Cypridina luciferin analog-dependent chemiluminescence/luminol-dependent chemiluminescence. Furthermore, there were significant positive correlations between albumin/prothrombin time and Cypridina luciferin analog-dependent chemiluminescence/luminol-dependent chemiluminescence. These data suggest that an impaired ability to produce oxygen-derived free radicals may contribute to the susceptibility to infection in patients with chronic liver disease.