Epidemiology of hepatitis C

M J Alter – 30 December 2003 – In the United States, the annual number of newly acquired acute hepatitis C virus (HCV) infections has declined from an estimated 180,000 in the mid 1980s to an estimated 28,000 in 1995. Approximately 25% to 30% of these infections are clinically apparent cases that are sufficiently symptomatic to gain medical attention. Deaths from fulminant hepatitis C are rare.

A case‐control study on GB virus C/hepatitis G virus infection and hepatocellular carcinoma.

A Tagger, F Donato, M L Ribero, R Chiesa, V Tomasoni, G Portera, U Gelatti, A Albertini, M Fasola, G Nardi – 30 December 2003 – A new hepatitis‐associated RNA virus of the Flaviviridae family has been identified and named GB virus C/ hepatitis G virus (HGV). We carried out a case‐control study to evaluate the association of HGV infection with hepatocellular carcinoma (HCC). We recruited 170 patients hospitalized for HCC (143 male and 27 female, mean age 64 years) and 306 patients hospitalized for nonliver diseases (controls) in Brescia, Italy.

Predominant T‐helper 1 cytokine profile of hepatitis B virus nucleocapsid‐specific T cells in acute self‐limited hepatitis B

A Penna, G Del Prete, A Cavalli, A Bertoletti, M M D'Elios, R Sorrentino, M D'Amato, C Boni, M Pilli, F Fiaccadori, C Ferrari – 30 December 2003 – The cytokine pattern secreted by T cells on viral antigen recognition is believed to exert a profound influence on both the type of disease caused by the infecting agent and the final outcome of the viral infection.

Transgenic expression of hepatitis C virus structural proteins in the mouse

T Kawamura, A Furusaka, M J Koziel, R T Chung, T C Wang, E V Schmidt, T J Liang – 30 December 2003 – Although hepatitis C virus (HCV) is a leading cause of morbidity and mortality worldwide, the role of viral cytopathic effects remains unclear. To study the biosynthesis of HCV structural proteins and their pathogenic role, we constructed transgenic mice, expressing type 1b HCV structural proteins (core, E1, and E2) in liver tissues. Two liver‐specific promoters were used.

Effects of growth hormone and insulin‐like growth factor‐I singly and in combination on in vivo capacity of urea synthesis, gene expression of urea cycle enzymes, and organ nitrogen contents in rats

T Grøfte, T Wolthers, S A Jensen, N Møller, J O Jørgensen, N Tygstrup, H Ørskov, H Vilstrup – 30 December 2003 – Improvement of nitrogen balance is desirable in patients with acute or chronic illness. Both growth hormone (GH) and insulin‐like growth factor‐I (IGF‐I) are promising anabolic agents, and their combined administration has been shown to reverse catabolism more efficiently than each of the peptides alone.

Lack of specificity of albumin‐mRNA–positive cells as a marker of circulating hepatoma cells

C Muller, D Petermann, F Pfeffel, C Oesterreicher, R Fugger – 30 December 2003 – The aim of the study was to assess the specificity of albumin‐messenger RNA (mRNA)‐positive cells in peripheral blood as an indicator for circulating malignant hepatocytes. Albumin‐mRNA–positive cells in the peripheral blood mononuclear cell (PMNC) fraction were detected by reverse‐transcription polymerase chain reaction (RT‐PCR).

Hepatocarcinogenesis in woodchuck hepatitis virus/c‐myc mice: Sustained cell proliferation and biphasic activation of insulin‐like growth factor II

P Liu, O Terradillos, C A Renard, G Feldmann, M A Buendia, D Bernuau – 30 December 2003 – Transgenic mice carrying the c‐myc oncogene under control of woodchuck hepatitis virus (WHV) DNA sequences invariably develop hepatocellular carcinoma (HCC), despite a temporally limited expression of the transgene in the neonatal liver. To better characterize the different steps of the tumorigenic process, we analyzed the liver expression of the c‐myc transgene and several growth‐related genes by in situ hybridization and Northern blotting.

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