Effects of immunosuppressive therapy with prednisolone on B and T lymphocyte function in patients with chronic type B hepatitis

Reginald G. Hanson, Marion G. Peters, Jay H. Hoofnagle – 1 March 1986 – B and T lymphocyte function was studied in 10 patients with chronic type B hepatitis before, during and after a 28‐day course of prednisolone therapy. Lymphocyte function was assessed by measuring the in vitro synthesis of immunoglobulin by peripheral blood mononuclear cells stimulated with pokeweed mitogen and by assaying lymphocyte proliferation in response to B and T cell mitogens.

Pericanalicular location of hepatocyte lysosomes and effects of fasting: A morphometric analysis

Richard B. Sewell, Catherine Dillon, Susan Grinpukel, Neville D. Yeomans, Richard A. Smallwood – 1 March 1986 – Lysosomes constitute a small proportion of hepatocyte volume, but they play a key degradative role, particularly during catabolic states such as nutritional deprivation. Our preliminary observations in hepatocytes suggested that fasting may alter the distribution of lysosomes, which are thought to congregate about the biliary canaliculus.

Detection of pre‐s1 proteins in serum and liver of HBsAg‐positive patients: a new marker for hepatitis B virus infection

Lorenz Theilmann, Mo‐Quen Klinkert, Karl Gmelin, Jochen Salfeld, Heinz Schaller, Eberhard Pfaff – 1 March 1986 – The presence of pre‐S1 proteins in serum and liver of individuals with acuteand chronic hepatitis B virus infection was investigated in Western blots using antibodies against a fusion protein, containing amino acids 20—120 of the pre‐S region. Pre‐S1 proteins were present in 20 of 38 HBsAg‐positive sera.

Hyperglucagonemia and hyperammonemia: Which is the chicken and which the egg?

Harold O. Conn, L. Siw Eriksson – 1 March 1986 – Elevated plasma ammonia level in hepatic cirrhosis has been attributed to a lack ofconversion of enteric ammonia into urea or to its entry into systemic circulation via portasystemic shunting, or to both. It is exaggerated by excessive protein intake. Because hyperglucagonemia is well documented in cirrhosis and a protein meal is an effective glucagon secretogogue, plasma glucose, insulin, glucagon, and ammonia levels were determined in 50 cirrhotic patients after an overnight fast.

Covalent binding of acetaldehyde selectively inhibits the catalytic activity of lysine‐dependent enzymes

Teri J. Mauch, Terrence M. Donohue, Rowen K. Zetterman, Michael F. Sorrell, Dean J. Tuma – 1 March 1986 – Hepatic ethanol metabolism generates the reactive intermediate, acetaldehyde, whichbinds to proteins. The binding of acetaldehyde to purified enzymes was determined in order to ascertain whether such binding altered their catalytic functions. [14C]Acetaldehyde was incubated with alcohol dehydrogenase, glucose‐6‐phosphate dehydrogenase, lactate dehydrogenase and RNase A, each at 37°C(pH 7.4).

Is the acidity of ascitic fluid a reliable index in making the presumptive diagnosis of spontaneous bacterial peritonitis?

Giovambattista Pinzello, Roberto Virdone, Francesca Lojacono, Maddalena Ciambra, Gabriella Dardanoni, Germana Fiorentino, Loredana Riccobono, Luigi Pagliaro – 1 March 1986 – Ascitic fluid pH and arterial‐ascitic fluid pH gradient were compared to ascitic fluid polymorphonuclear cell count in 84 patients with cirrhotic ascites and in 12 with malignant ascites to assess their role as diagnostic tests for spontaneous bacterial peritonitis and to clarify the relationship between ascitic fluid pH and lactate.

Impaired antibody synthesis in patients with chronic hepatitis B infection

Marek J. Nowicki, Myron J. Tong, Prem V. Nair, Douglas Stevenson – 1 March 1986 – In vitro synthesis of the anti‐HBc, anti‐HBs and polyclonal IgG and IgM classes of antibodies were determined from supernatants of peripheral blood mononuclear cells cultured in the presence of pokeweed mitogen. Thirty‐seven patients with chronic hepatitis B and 10 healthy control subjects whose sera were positive for anti‐HBs formed the study group. Twenty‐four of 37 patients showed histologic evidence of chronic active hepatitis B while the remaining 13 patients had chronic persistent hepatitis B.

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