Metabolism of 24‐norlithocholic acid in the rat: Formation of hydroxyl‐ and carboxyl‐linked glucuronides and effect on bile flow

Karen E. Shattuck, Anna Radominska‐Pyrek, Piotr Zimniak, Eugene W. Adcock, Roger Lester, Jan St. Pyrek – 1 September 1986 – 24‐Norlithocholic (3α‐hydroxy‐24‐nor‐5β‐cholan‐23‐oic) acid is the lower homologue of lithocholic acid, a potent cholestatic agent. In order to characterize its cholestatic potential and metabolic fate, 3β‐tritiated 24‐norlithocholate was infused intravenously into adult male Sprague‐Dawley rats prepared with an external biliary fistula.

The mechanisms of iron uptake by fetal rat hepatocytes in culture

Deborah Trinder, Evan Morgan, Erica Baker – 1 September 1986 – The mechanisms of iron accumulation by cultured hepatocytes isolated from fetal rat liver (19 days gestation) were investigated using rat transferrin labeled with 125I and 59Fe. The rates of iron and transferrin internalization by the cells were measured by incubating the hepatocytes with the labeled transferrin at 37°C followed by treatment with pronase at 4°C to remove surface‐bound transferrin and iron. Iron internalization increased linearly with time.

Hepatic inclusions during interferon therapy in chronic viral hepatitis

Zsuzsa Schaff, Jay H. Hoofnagle, Philip M. Grimley – 1 September 1986 – Two types of cytomembranous abnormalities were identified for the first time in liver biopsies from patients with chronic active type B hepatitis during treatment with recombinant α‐interferon. Tubuloreticular inclusions were present in the hepatic endothelial cells, Kupffer cells and perisinusoidal cells of liver biopsies from both patients, and they were absent in liver biopsies obtained before treatment.

Heterogeneous expression of phenobarbital‐inducible cytochrome P‐450 genes within the hepatic acinus in the rat

Jose Chianale, Caroline Dvorak, Maryann May, Jorge J. Gumucio – 1 September 1986 – Within the hepatic acinus, the functional unit of liver parenchyma, the induction of cytochrome P‐450 protein by phenobarbital is manifested primarily in hepatocytes located closer to the hepatic venule, i.e., distal hepatocytes.

Effect of 16,16‐dimethyl prostaglandin E2 on oxygen uptake and microcirculation in the perfused rat liver

Haruya Meren, France Varin, Mary Ruwart, Ronald G. Thurman – 1 September 1986 – Previous work demonstrated that collagen deposition in the liver of rats fed a nutritionally deficient diet for 3 to 4 months was diminished markedly by 16,16‐dimethyl prostaglandin E2 treatment. In this study, rats were fed a high‐fat diet or a high‐fat diet deficient in lipotropes for 2 to 4 weeks prior to liver perfusion. Rates of O2 uptake by the liver were not changed by dietary manipulation.

Evaluation of aztreonam in the treatment of spontaneous bacterial peritonitis in patients with cirrhosis

Javier Ariza, Francisco Gudiol, Carlos Dolz, Javier Xiol, Josefina Liñares, Jorge Bosch, Roman Pallares – 1 September 1986 – To determine the efficacy of aztreonam in the treatment of spontaneous bacterial peritonitis in patients with hepatic cirrhosis, 14 patients (7 males, 7 females) with 16 Gram‐negative infective episodes (12 Escherichia coli and 4 Klebsiella pneumoniae) were treated with aztreonam infusions at doses of 1 gm per 8 hr for a planned 14‐day period. Ages ranged from 40 to 75 years with a mean of 57 ± 10 years.

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