Response of plasma and tissue endothelin‐1 to liver ischemia and its implication in ischemia‐reperfusion injury

Eisuke Kawamura, Naoki Yamanaka, Eizo Okamoto, Fumihito Tomoda, Kazutaka Furukawa – 1 April 1995 – This study was designed to investigate the changes in plasma and tissue endothelin‐1/endothelin‐2 (ET) after liver ischemia and to assess the protective effect of anti‐ET 1/ET 2 monoclonal antibody (ET antibody) against ischemia‐reperfusion injury. The ET levels in the liver tissue, hepatic venous blood of the ischemic and non‐ischemic sides, and in the portal venous blood were measured before and after partial liver ischemia for 1 hour in the adult dog.

Utilization of tyrosine‐containing dipeptides and N‐acetyl‐tyrosine in hepatic failure

Wilfred Druml, Wolfgang Hübl, Erich Roth, Herbert Lochs – 1 April 1995 – The impact of hepatic dysfunction on the elimination and hydrolysis of three potential tyrosine sources for total parenteral nutrition, the dipeptides L‐alanyl‐L‐tyrosine (Ala‐Tyr) and glycyl‐L‐tyrosine (Gly‐Tyr), and N‐acetyl‐L‐tyrosine (Nac‐Tyr) were evaluated in six patients with hepatic failure (five chronic, one acute) and seven healthy subjects. In controls, whole‐body clearance (Cltot) of Ala‐Tyr was higher than of Gly‐Tyr (3,169 ± 214 vs.

Hepatitis C virus RNA and liver histology in blood donors reactive to a single antigen by second‐generation recombinant immunoblot assay

Alberto Zanella, Dario Conte, Daniele Prati, Fulvio Mozzi, Carmen Capelli, Francesco Zanuso, Mirella Fraquelli, Patrizia Bosoni, Luciana Vianello, Marco Pappalettera, Pietro Velio, Glanguido Montagnolo, Paolo A. Bianchi, Girolamo Sirchia – 1 April 1995 – The clinical significance of single band reactivity (indeterminate pattern) at anti‐hepatitis C virus (HCV) second‐generation recombinant immunoblot assay (RIBA‐2) was investigated in symptomless subjects with normal liver function tests to obtain data for their counseling and clinical management.

Ethane exhalation and vitamin E/ubiquinol status as markers of lipid peroxidation in ferrocene iron—loaded rats

Bernd Dresow, Claudia Albert, Inge Zimmermann, Peter Nielsen – 1 April 1995 – Organ damage caused by iron overload has been mostly attributed to iron‐induced peroxidation of membrane lipids. Using the ferrocene iron—loaded rat model, we studied ethane exhalation as a direct marker of in vivo lipid peroxidation, as well as concentrations of α‐tocopherol and ubiquinol 9/10 in liver and plasma as indirect markers of this process. The feeding of a diet enriched with 0.5% TMH‐ferrocene up to 31 weeks resulted in a large increase in liver iron concentration to about 25 mg/g wet weight (w wt).

Alteration of Na+ homeostasis as a critical step in the development of irreversible hepatocyte injury after adenosine triphosphate depletion

Rita Carini, Giorgio Bellomo, Angelo Benedetti, Rosella Fulceri, Alessandra Gamberucci, Maurizio Parola, Mario U. Dianzani, Emanuele Albano – 1 April 1995 – The exposure of isolated hepatocytes to the redox‐cycling quinone menadione caused an early loss of mitochondrial membrane potential, adenosine triphosphate (ATP) depletion, and decreased intracellular pH. These alterations were followed by an increase in intracellular Na+ and, ultimately, cell death.

Biliary copper excretion in the neonatal rat: Role of glutathione and metallothionein

Parvathi Mohan, Mark Failla, Ian Bremner, Ann Arthur‐Smith, Benny Kerzner – 1 April 1995 – Metallothionein (MT) and glutathione (GSH) have been implicated as two major copper‐binding agents involved in the hepatobiliary copper metabolism in the adult rat. This study was designed to explore their potential role in facilitating copper export from the copper‐laden hepatocyte of the newborn rat. Biliary and hepatic copper, GSH, and immunoreactive MT‐I concentrations were measured in Sprague‐Dawley rats at 1, 2, 3, 4, and 8 weeks of age.

Transjugular intrahepatic portal‐systemic shunt in the treatment of refractory ascites: Effect on clinical, renal, humoral, and hemodynamic parameters

Jorge Quiroga, Bruno Sangro, Marina Núñez, Ignacio Bilbao, Jesús Longo, Luis García‐Villarreal, José M. Zozaya, Maite Betés, José I. Herrero, Jesús Prieto – 1 April 1995 – Seventeen cirrhotics with refractory ascites were treated with transjugular intrahepatic portosystemic shunt (TIPS) and followed for 15.5 ± 3.4 months. Five patients died, four within 3 months after TIPS (hepatocellular failure) and one after 22 months (cholangiocarcinoma). Six patients received transplants 1 to 10 months after the procedure. Actuarial survival at 6, 12, and 24 months was 75%, 75%, and 63%, respectively.

Plasma calprotectin: A new prognostic marker of survival in alcohol‐induced cirrhosis

Christian Homann, Peter Garred, Niels Graudal, Philip Hasselqvist, Michael Christiansen, Magne K. Fagerhol, Åge Christian Thomsen – 1 April 1995 – Plasma levels of calprotectin were determined in 84 patients with alcohol‐induced cirrhosis. Calprotectin is released from disintegrating neutrophils, and plasma levels seem to reflect activation and turnover of such cells. The purpose of the study was to investigate the degree of activation of neutrophils, which has been indicated to be increased and a cause of neutrophil exhaustion in these patients.

Progressive type of focal nodular hyperplasia characterized by multiple tumors and recurrence

Daniel C. Sadowski, Samuel S. Lee, Ian R. Wanless, James K. Kelly, E. Jenny Heathcote – 1 April 1995 – Focal nodular hyperplasia (FNH) is usually a stable lesion that does not enlarge when studied for long periods of time; recurrence after resection has not been reported. We present a patient with a solitary FNH lesion that enlarged, was resected, and then recurred. A second resection was performed because of abdominal pain and disclosed multiple lesions, two of which were acutely infarcted. Thirty‐two months later there was ultrasound evidence of further recurrence.

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