Buoyant density of hepatitis C virus recovered from infected hosts: Two different features in sucrose equilibrium density‐gradient centrifugation related to degree of liver inflammation

Tatsuya Kanto, Norio Hayashi, Tetsuo Takehara, Hideki Hagiwara, Eiji Mita, Masafumi Naito, Akinori Kasahara, Hideyuki Fusamoto, Takenobu Kamada – 1 February 1994 – Hepatitis C virus is reported to have a low buoyant density in sucrose. To determine the density of hepatitis C virus in the circulation of infected hosts and its association with the degree of liver inflammation, we examined serum samples from 10 patients who were positive for both hepatitis C virus antibody (C100 antigen) antibody and serum hepatitis C virus RNA.

Liver glut‐1 expression: An enigma deepens

David B. Rhoads – 1 February 1994 – The basal hepatocyte phenotype is conferred by the expression of liver‐specific genes. In the adult liver, the basal hepatocyte phenotype is further modified by transcriptional and post‐transcriptional regulation of genes which result in the appearance of specific proteins in selected hepatocytes. One of these proteins is the erythroid/brain or GLUT‐1 glucose transporter. The GLUT‐1 protein is detected in the plasma membrane of only one or two hepatocytes located at the end of the liver cell plate, contiguous to the hepatic venule.

Acute fatty liver of pregnancy and long‐chain 3‐hydroxyacyl–coenzyme A dehydrogenase deficiency

William R. Treem, Piero Rinaldo, Daniel E. Hale, Charles A. Stanley, David S. Millington, Jeffrey S. Hyams, Sandra Jackson, Douglass M. Turnbull – 1 February 1994 – The pathogenesis of acute fatty liver of pregnancy is unknown, but similarities in the clinical presentation and the histological appearance of the liver with those found in children with metabolic defects in the intra‐mitochondrial β‐oxidation pathway of the liver suggest that a disturbance in hepatic fatty acid oxidation may play a role.

Early and late changes in fasting and absorptive plasma amino acids and ammonia after distal splenorenal shunt in cirrhosis

Franco Trevisani, Mauro Bernardi, Vincenzo Arienti, Pietro Scrivano, Alighieri Mazziotti, Antonino Cavallari, Daniela Patrono, Sandro Piazzi, Giuseppe Gozzetti, Giovanni Gasbarrini – 1 February 1994 – Levels of plasma amino acids, ammonia, glucagon and insulin and their 5‐hr responses to a protein feeding were evaluated before and sequentially (3 mo and 1 yr) after distal splenorenal shunt in 10 patients with cirrhosis belonging to Child‐Pugh's class A or B. An index of glucagon effectiveness (plasma glucose/glucagon) was also calculated.

Hepatitis C viremia in chronic liver disease: Relationship to interferon‐α or corticosteroid treatment

Silvio Magrin, Antonio Craxi, Carmelo Fabiano, Rosa Giovanna Simonetti, Germana Fiorentino, Liliana Marino, Orazia Diquattro, Vito Di Marco, Oreste Loiacono, Riccardo Volpes, Piero Almasio, Mickey S. Urdea, Paul Neuwald, Ray Sanchez‐Pescador, Jill Detmer, Judith C. Wilber, Luigi Pagliaro – 1 February 1994 – We assessed the pattern of hepatitis C viremia in chronic liver disease by studying 100 hepatitis C virus antibody–positive patients: 48 with chronic hepatitis, 21 with cirrhosis and 31 with hepatocellular carcinoma and cirrhosis.

Spontaneous Ca2+ release from a caffeine and ryanodine–sensitive intracellular Ca2+ store in freshly prepared hepatocytes

Shinji Osada, Yukio Okano, Shigetoyo Saji, Yoshinori Nozawa – 1 February 1994 – A considerable fraction of freshly prepared hepatocytes loaded with the fluorescent [Ca2+]i indicator fura‐2 exhibited spontaneous rhythmic fluctuations that tended to decrease with increasing length of incubation after isolation. These oscillations were dependent on the external Ca2+. They could no longer be observed when a Ca2+ chelator–(ethylenebis [oxyethylenenitrilo]) tetraacetic acid–was added to medium.

Pathways of intracellular trafficking and release of ferritin by the liver in vivo: The effect of chloroquine and cytochalasin D

Grant A. Ramm, Lawrie W. Powell, June W. Halliday – 1 February 1994 – We have previously shown that the clearance of exogenous ferritin and the release of endogenous ferritin into both serum and bile are altered by the microtubular inhibitor colchicine. In this study we further examined the role of the lysosome‐endosome pathway in ferritin metabolism.

Quantitative assessment of serum IgM anti‐HBc in the natural course and during interferon treatment of chronic hepatitis B virus infection

George Marinos, Heather M. Smith, Nikolai V. Naoumov, Roger Williams – 1 February 1994 – Serum IgM anti‐HBc was determined in 135 chronic HBsAg carriers with various categories of histological activity on liver biopsy and hepatitis B serological profile. Thirty‐three patients were treated with interferon‐α to investigate the correlation between serum IgM anti‐HBc with histological activity and viral replication, to evaluate the usefulness of pretreatment IgM anti‐HBc as a predictor of a successful response to interferon‐α and to examine the IgM anti‐HBc response during this treatment.

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