Adaptive sex‐dependent changes in the zonation of carbohydrate and lipid metabolism in rat liver lobules after partial hepatectomy

Cornelis J. F. Van Noorden, Ilse M. C. Vogels, Jan James – 1 September 1994 – To evaluate changes in metabolic heterogeneity in rat liver lobules after partial hepatectomy, we measured parameters of carbohydrate and lipid metabolism cytophotometrically in periportal and pericentral zones of livers of mature female and male rats. Glycogen content was shown to be always higher in pericentral zones than in periportal zones.

Heterogeneity of combinatorial human autoantibodies against PDC‐E2 and biliary epithelial cells in patients with primary biliary cirrhosis

Sanghoon Cha, Patrick S. C. Leung, Ross L. Coppel, Judy Van De Water, Aftab A. Ansari, M. Eric Gershwin – 1 September 1994 – The polyclonal nature of antimitochondrial autoantibodies and the limited success of generating human monoclonal antibodies have made analysis of fine specificity and antibody heterogeneity difficult to define. The major autoantigen of primary biliary cirrhosis is the E2 component of the pyruvate dehydrogenase pathway (PDC‐E2).

Human biliary epithelial cells secrete and respond to cytokines and hepatocyte growth factors in vitro: Interleukin‐6, hepatocyte growth factor and epidermal growth factor promote DNA synthesis in vitro

Koshi Matsumoto, Hiroaki Fujii, George Michalopoulos, John J. Fung, Anthony J. Demetris – 1 August 1994 – Recombinant growth factors and proinflammatory cytokines were added to primary cultures of human intrahepatic biliary duct epithelia to test for their ability to stimulate DNA synthesis and elicit cytokine production. Interleukin‐6 and hepatocyte and epidermal growth factors were found to increase the DNA labeling index of biliary duct epithelium from fourfold to sixfold 24 hr after their addition to primary biliary duct epithelium cultures maintained in serum‐free medium.

Monoethylglicinexylidide test: A prognostic indicator of survival in cirrhosis

Arrigo Arrigoni, Tiziana Gindro, Giuseppe Aimo, Nazario Cappello, Andrea Meloni, Paolo Benedetti, Gian Paolo Molino, Giorgio Verme, Mario Rizzetto – 1 August 1994 – The aim of this study was to assess the value of the monoethylglicinexylidide assay, a dynamic liver function test based on the determination of the serum concentration of lidocaine major metabolite, as a predictor of survival in cirrhosis.

Functional characterization of the basolateral rat liver organic anion transporting polypeptide

Gerd‐Achim Kullak‐Ublick, Bruno Hagenbuch, Bruno Stieger, Allan W. Wolkoff, Peter J. Meier – 1 August 1994 – To characterize the transport functions of a recently cloned basolateral organic anion transporting polypeptide of rat hepatocytes we performed further kinetic transport and substrate cis‐inhibition studies in organic anion‐transporting polypeptide—cRNA injected Xenopus laevis oocytes.

Purification of cultured primary rat hepatocytes using selection with ricin a subunit

David E. Johnston, Rahul Jasuja – 1 August 1994 – We had found several methods of hepatocyte isolation to be inadequate for removing Kupffer and endo thelial cells and so developed a method of selectively killing these nonparenchymal cells in hepatocyte cultures using the known selective uptake and toxicity of the protein synthesis inhibitor ricin and its A chain by nonparenchymal cells. Kupffer cells were quantitated with the Ku‐1 monoclonal antibody.

Zonal heterogeneity of peroxisomal enzymes in rat liver: Differential induction by three divergent hypolipidemic drugs

Markus Lindauer, Konstantin Beier, Alfred Völkl, H. Dariush Fahimi – 1 August 1994 – The hepatic zonation of peroxisomes and four of their matrical enzyme proteins (catalase, acyl coenzyme A oxidase, multifunctional protein, thiolase) has been investigated in normal male rats and after treatment with three divergent hypolipidemic drugs by means of automatic image analysis and quantitative immunoelectron microscopy. The induction of peroxisomal enzymes was confirmed by Western blotting and enzyme activity determinations in liver homogenates and in highly purified peroxisome fractions.

Molecular species of hepadnavirus core and envelope polypeptides in hepatocyte plasma membrane of woodchucks with acute and chronic viral hepatitis

Tomasz I. Michalak, Bo Lin – 1 August 1994 – Hepadnaviral antigens exposed on hepatocytes serve as targets and as possible modulators of immunopathogenic reactions causing liver damage. To identify molecular species of viral proteins at the liver cell surface and the relationship between their expression and the persistence and severity of virus‐induced liver injury, we examined woodchuck hepatitis virus core and envelope polypeptides in host hepatocyte plasma membranes from acute and chronic hepatitis.

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

Masahiro Uehara, Noriyuki Sato – 1 August 1994 – 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.

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