Plasma atrial natriuretic peptide and renin‐aldosterone in patients with cirrhosis and ascites: Basal levels, changes during daily activity and nocturnal diuresis

Marios Z. Panos, John V. Anderson, Nadia Payne, Peter Langley, Jeremy D. H. Slater, Lesley Rees, Roger Williams – 1 July 1992 – Measurements of plasma atrial natriuretic peptide concentrations at 8 AM showed raised levels in 21 patients with cirrhosis and ascites (10.5 ± 0.8 pmol/L) compared with levels in 10 age‐matched controls (4.1 ± 0.64 pmol/L; p < 0.0001). In eight patients and 10 controls, atrial natriuretic peptide, plasma renin activity, plasma aldosterone and urinary sodium excretion were measured every 4 hr for 24 hr.

Isolation and characterization of the mannose receptor from human liver potentially involved in the plasma clearance of tissue‐type plasminogen activator

Marlies Otter, PETRA Žočková, Johan Kuiper, Theo J. C. Van Berkel, Marrie M. Barrett‐Bergshoeff, Dingeman C. Rijken – 1 July 1992 – Various studies have shown that mannose receptors rapidly eliminate glycoproteins and microorganisms bearing high mannose–type carbohydrate chains from the blood circulation. The purpose of this study was to characterize the mannose receptor in the liver, which in vivo is involved in the rapid clearance of tissue‐type plasminogen activator from the circulation.

The mechanism of inhibition of hepatitis B virus replication by the carbocyclic analog of 2′‐deoxyguanosine

Peter M. Price, Ranjit Banerjee, Alan M. Jeffrey, George Acs – 1 July 1992 – The carbocyclic analog of deoxyguanosine inhibits hepatitis B virus replication by greater than 95% in the hepatitis B virus‐producing cell line (2.2.15) as monitored by decreases of secreted hepatitis B virus DNA, hepatitis B virus polymerase activity and intracellular episomal hepatitis B virus DNA. Transcription of hepatitis B virus RNA from chromosomally integrated hepatitis B virus DNA was unaffected.

Intracranial pressure monitoring and liver transplantation for fulminant hepatic failure

Steven D. Lidofsky, Nathan M. Bass, Marie C. Prager, Denna E. Washington, Alexandra E. Read, Teresa L. Wright, Nancy L. Ascher, John P. Roberts, Bruce F. Scharschmidt, John R. Lake – 1 July 1992 – Cerebral edema and intracranial hypertension, commonly present in fulminant hepatic failure, may lead to brainstem herniation and limit the survival of comatose patients awaiting liver transplantation before a donor organ becomes available. Also, they are likely responsible for postoperative neurological morbidity and mortality.

Pumping ions: Regulation of intracellular pH in hepatocytes

Greg Fitz – 1 July 1992 – In rat hepatocytes, basolateral Na+‐H+ exchange and Na+‐HCO3− cotransport function as acid extruders. To assess mechanisms of acid loading, intracellular pH (pHi) recovery from an alkaline load was analyzed in short‐term cultured rat hepatocyte monolayers using the pH‐sensitive dye BCECF. Electrophysiological techniques were also used to assess the role of the membrane potential (Vm). Cells were alkaline loaded by suddenly reducing external CO2 and HCO3− (from 10% and 50 mM, respectively, to 5% and 25 mM) at constant pH.

Isoenzymes of carbohydrate metabolism in primary cultures of hepatocytes from thioacetamide‐induced rat liver necrosis: Responses to growth factors

Maria Cascales, Paloma Martin‐Sanz, Alberto Alvarez, Miguel Sanchez‐Pérez, Carmen Diez Fernández, Lisardo Boscá – 1 July 1992 – Hepatocytes isolated from the liver of rats after a necrotizing dose of thioacetamide (6.6 mmol/kg) were used to study the postnecrotic process of liver regeneration. Flow cytometry analysis revealed populations of dedifferentiated hepatocytes exhibiting physical properties (size and fluorescence emission at 530 nm) similar to those found in fetal (22 days old) liver cells.

Defective methionine metabolism in cirrhosis: Relation to severity of liver disease

Professor Giulio Marchesini, Elisabetta Bugianesi, Giampaolo Bianchi, Andrea Fabbri, Elisabetta Marchi, Marco Zoli, Emilio Pisi – 1 July 1992 – A block in the transsulfuration pathway has previously been suggested in cirrhosis on the basis of increased fasting methionine concentrations, decreased methionine elimination and low levels of methionine end products. To date, methionine elimination has never been studied under controlled steady‐state conditions, and the relation of the severity of liver disease to impaired methionine metabolism has not been clarified.

Changes of igg‐bearing cell populations in the portal tracts of patients with chronic liver disease of viral etiology: An evaluation by immunoperoxidase method and computerized image analysis

Giuseppe Torgano, Maurizio Vecchi, Eliana Arosio, Daniela Santambrogio, Guido Ronchi, Giorgio Annoni, Maurizio Tomasini, Ettore Contessini, Roberto De Franchis – 1 July 1992 – Little is known about the distribution of IgG‐bearing cell subpopulations in normal liver and their possible changes in disease conditions. We developed an immunohistochemical method that proved suitable and accurate for the identification and characterization of IgG‐bearing cells and their subpopulations in liver specimens. The method uses specific monoclonal antibodies on serial mirror liver sections.

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