Antibodies to single‐stranded and double‐stranded DNA in antinuclear antibody‐positive type 1‐autoimmune hepatitis

A J Czaja, S A Morshed, S Parveen, M Nishioka – 30 December 2003 – To determine the significance of antibodies to single‐stranded (anti‐ssDNA) and double‐stranded DNA (anti‐dsDNA) in antinuclear antibody (ANA)‐positive type 1 autoimmune hepatitis, sera from 53 patients were tested by enzyme immunosorbent assay (ELISA) and indirect immunofluorescence using the Crithidia luciliae substrate. Anti‐dsDNA were detected in 18 patients (34%) by ELISA and 12 patients (23%) by the Crithidia‐based assay.

Transmission of a homogenous hepatitis B virus population of A1896‐containing strains leading to mild resolving acute hepatitis and seroconversion to hepatitis B e antigen antibodies in an adult

M J Mphahlele, A G Shattock, W Boner, J Quinn, P A McCormick, W F Carman – 30 December 2003 – The pre‐core variant, A1896, which switches off hepatitis B e antigen (HBeAg) production, is common in hepatitis B e antigen antibody (anti‐HBe)‐positive chronic hepatitis patients. It has been observed in occasional case reports of acute hepatitis. However, transmission in the absence of HBeAg‐producing strains, leading to acute nonfulminant hepatitis and clearance in adults, has not been reported.

Chronic ethanol effects on cellular immune responses to hepatitis B virus envelope protein: An immunologic mechanism for induction of persistent viral infection in alcoholics

M Geissler, A Gesien, J R Wands – 30 December 2003 – Hepatitis B virus (HBV) is common in alcoholics and may result in chronic infection. Persistence of HBV infection could be partially caused by the effects of ethanol on the cellular and humoral immune response to viral structural proteins. The DNA‐based immunization approach was used to experimentally assess the effects of chronic ethanol feeding on immune responses directed against the middle envelope protein (MHBs) of HBV.

Role of glutathione in nitric oxide‐dependent regulation of energy metabolism in rat hepatoma cells

Manabu Nishikawa, Eisuke F. Sato, Misato Kashiba, Tetsuo Kuroki, Kozo Utsumi, Masayasu Inoue – 30 December 2003 – Previous studies in this laboratory revealed that nitric oxide (NO) reversibly inhibits the respiration of isolated mitochondria and ascites hepatoma (AH‐130) cells by an oxygen concentration–dependent mechanism. The inhibitory effect of NO on the respiration of AH‐130 cells was enhanced by treating with digitonin that selectively permeabilized plasma membranes and released cytosolic low‐molecular‐weight compounds.

The effect of hepatocyte enlargement on the hemodynamic characteristics of the isolated perfused rat liver preparation

Howard J. Grossman, Virginia L. Grossman, Prithi S. Bhathal – 30 December 2003 – The influence of hepatocyte enlargement on intrahepatic hemodynamics was assessed in the isolated perfused rat liver preparation (IPRL) using two experimental models: hypotonic liver cell swelling and phenobarbitone‐induced hepatocyte hypertrophy.

Inhibition of in vivo rat liver regeneration by 2‐acetylaminofluorene affects the regulation of cell cycle‐related proteins

Lena C. E. Ohlson, Lena Koroxenidou, Inger Porsch Hällström – 30 December 2003 – The effects of dietary 2‐acetylaminofluorene (2‐AAF) on cell cycle‐related proteins was studied in regenerating livers from male Wistar rats. The levels of cyclins, cyclin dependent kinases (cdks), and related proteins were studied at different times during the first cell cycle after partial hepatectomy (PH).

Slow progression rate of fibrosis in hepatitis C virus patients with persistently normal alanine transaminase activity

Philippe Mathurin, Joseph Moussalli, Jean‐François Cadranel, Vincent Thibault, Frédéric Charlotte, Patrice Dumouchel, Alain Cazier, Jean‐Marie Huraux, Bruno Devergie, Michel Vidaud, Pierre Opolon, Thierry Poynard – 30 December 2003 – In hepatitis C virus (HCV) patients with persistently normal alanine transaminase (ALT), the progression rate of fibrosis is unknown.

Independent and combined action of hepatitis C virus infection and alcohol consumption on the risk of symptomatic liver cirrhosis

Giovanni Corrao, Sarino Aricò – 30 December 2003 – Although alcohol intake and hepatitis C virus (HCV) infection are the major determinants of liver cirrhosis (LC) in Western countries, the joint effect of these two factors on LC risk has not yet been adequately studied. We used data from two hospital‐based case‐control studies performed in Italy. Cases were 285 cirrhotic patients admitted for the first time to district hospitals for liver decompensation.

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