Response to higher doses of interferon alfa‐2b in patients with chronic hepatitis C: A randomized multicenter trial

K L Lindsay, G L Davis, E R Schiff, H C Bodenheimer, L A Balart, J L Dienstag, R P Perrillo, C H Tamburro, J S Goff, G T Everson, M Silva, W N Katkov, Z Goodman, J Y Lau, G Maertens, J Gogate, B Sanghvi, J Albrecht – 1 November 1996 – To evaluate response rates to 3, 5, or 10 million units (MU) of interferon alfa‐2b, given thrice weekly, and to determine whether higher doses of interferon increase the likelihood or durability of the response, a multicenter, randomized trial was performed at nine academic medical centers in the United States.

Long‐term alcohol intake enhances ADP‐ribosylation of the multifunctional enzyme, phosphoglucomutase, in rat liver

F Nomura, M Noda, M Miyake, T Nakai – 1 November 1996 – Adenosine diphosphate (ADP)‐ribosylation is a posttranslational protein modification that, in turn, alters several regulatory proteins in mammalian cells. We demonstrated that long‐term alcohol intake enhanced the ADP‐ribosylation of a 58‐kd protein in rat liver plasma membranes. To assess the biological significance of this phenomenon, we partially purified the 58‐kd acceptor protein from solubilized rat liver homogenates by two sequential preparative high‐pressure liquid chromatographies.

Increased nitric oxide synthase activity as a cause of mitochondrial dysfunction in rat hepatocytes: roles for tumor necrosis factor α

I Kurose, S Miura, H Higuchi, N Watanabe, Y Kamegaya, M Takaishi, K Tomita, D Fukumura, S Kato, H Ishii – 1 November 1996 – Kupffer cells have been implicated in playing an important role in the pathogenesis of endotoxemia‐associated liver injury. The present study was designed to investigate whether Kupffer cell‐derived mediators alter the mitochondrial oxidative phosphorylation of hepatocytes in the endotoxemic condition. Liver cells were isolated from male Wistar rats.

Frequency and significance of antibodies to actin in type 1 autoimmune hepatitis

A J Czaja, F Cassani, M Cataleta, P Valentini, F B Bianchi – 1 November 1996 – Antibodies to actin have been proposed as diagnostic markers for type 1 autoimmune hepatitis. Our aims were to determine (1) if testing for antibodies to actin is superior to testing for smooth muscle antibodies (SMA); (2) if these antibodies identify patients with distinctive clinical features; and (3) if the production of antibodies to actin is associated with genetic risk factors for autoimmune hepatitis. Sera from 99 patients with type 1 autoimmune hepatitis were tested.

Severity of liver disease in liver transplantation recipients with hepatitis C virus infection: Relationship to genotype and level of viremia

S Zhou, N A Terrault, L Ferrell, J A Hahn, J Y Lau, P Simmonds, J P Roberts, J R Lake, N L Ascher, T L Wright – 1 November 1996 – Infection with hepatitis C virus (HCV) genotype 1b has been reported to be associated with more severe posttransplantation liver disease than infection with non‐1b genotypes. To address this issue, we evaluated the outcome in 124 patients who underwent liver transplantation for chronic HCV infection. The HCV genotype and/or serotype responsible for infection was determined by four different methods.

Inhibition of hepatitis B virus DNA polymerase by enantiomers of penciclovir triphosphate and metabolic basis for selective inhibition of HBV replication by penciclovir

T Shaw, S S Mok, S A Locarnini – 1 November 1996 – The deoxyguanosine analog penciclovir (PCV; 9‐[4‐hydroxy‐3‐hydroxymethyl‐but‐1‐yl]guanine), has shown potent antiviral activity against herpes viruses and hepadnaviruses. Efficacy against chronic hepatitis B virus (HBV) infection has been demonstrated in an animal model and in recent clinical trials of famciclovir, the oral form of PCV.

Presentation of choledochal cysts without intrabiliary communication on endoscopic retrograde cholangiopancreatography

Rahul M. Jindal, N. Harris, Huey M. McDaniel, Glen Lehman, Stuart Sherman – 1 November 1996 – Choledochal cysts have generally been described to communicate with the biliary system. We recently saw three adult patients in whom we could not demonstrate biliary communication between the cyst and the biliary tree, despite a carefully performed endoscopic cholangiopancreatography (ERCP). These cases may represent a variant of type II choledochal cysts.

Phospholipase D activation in hepatocyte growth factor‐stimulated rat hepatocytes mediates the expressions of c‐jun and c‐fos: Involvement of protein tyrosine kinase, protein kinase C, and Ca2+

T Adachi, S Nakashima, S Saji, T Nakamura, Y Nozawa – 1 November 1996 – Hepatocyte growth factor (HGF) activated phospholipase D (PLD) in primary‐cultured rat hepatocytes, as assessed by the formation of phosphatidylbutanol (PBut), a specific and stable product of PLD activity in the presence of 0.3% butanol. PLD hydrolyzes phosphatidylcholine to choline and phosphatidic acid (PA), which is further metabolized to diacylglycerol (DG) by PA phosphohydrolase (PAP). In HGF‐stimulated hepatocytes, butanol prevented the formation of PA and DG.

Transjugular renal biopsy in the treatment of patients with cirrhosis and renal abnormalities

P Jouet, A Meyrier, F Mal, P Callard, C Guettier, D Stordeur, J Trinchet, M Beaugrand – 1 November 1996 – When renal lesions are suspected in patients with cirrhosis, clotting disorders often preclude percutaneous renal biopsy. This study was undertaken to determine whether transjugular renal biopsy is possible, safe, and useful in such patients. From 1987 to 1994, 70 patients with cirrhosis and clotting disorders underwent transjugular renal biopsies, providing renal tissue in 55.

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