Renee C. Lin, Feng C. Zhou, Michael J. Fillenwarth, Lawrence Lumeng – 1 October 1993 – Acetaldehyde, a highly reactive intermediate of alcohol metabolism, has been shown to form adducts with liver proteins in rats fed alcohol for long periods. In this report, the zonal distribution of liver proteinacetaldehyde adducts that formed in vivo was studied by means of histoimmunostaining. Rats were pair‐fed alcohol‐containing and alcohol‐free AIN'76 liquid diets for 2 or 11 wk before they were killed and subjected to whole body perfusion with paraformaldehyde.

Renata E. Bluhm, Marshall G. Frazer, Mary Vore, C. Wright Pinson, Kamal F. Badr – 1 October 1993 – Autoradiographic studies have shown that the liver accumulates endothelin. High‐affinity binding sites for endothelin have been identified on rat liver plasma membranes. We investigated the role of endothelin isopeptides as mediators of cholestasis with isolated rat liver perfused by a recirculating solution of buffer and blood.

1 October 1993

1 October 1993

Z. Reno Vlahcevic, William M. Pandak, Philip B. Hylemon, Douglas M. Heuman – 1 September 1993 – Cholesterol 7αhydroxylase, the rate‐limiting enzyme in the bile acid biosynthetic pathway, is thought to be regulated by hydrophobic bile acids through negative feedback control. The role of cholesterol in the regulation of cholesterol 7αhydroxylase is more controversial, in part because of incomplete understanding of the relationship between the pathways of cholesterol synthesis and degradation.

Phillip Gorden, Donald F. Cyphers, Carol Feld – 1 September 1993

Mark E. Mailliard – 1 September 1993 – Transport of L‐cysteine and a cysteine S‐conjugate, S‐(1,2‐dichlorovinyl)‐L‐cysteine (DCVC) was investigated in rat liver canalicular plasma membrane (cLPM) vesicles. Cysteine uptake into an osmotically active intravesicular space was temperature sensitive and further enhanced by an inwardly directed Na+ gradient.

1 September 1993

Mark G. Swain, John Vergalla, E. Anthony Jones – 1 September 1993 – Endopeptidase 24.11 (enkephalinase), an enzyme known to be present in plasma and liver, is capable of metabolizing a substantial number of bioactive peptides. We measured plasma endopeptidase 24.11 activity in normal subjects and in patients with chronic hepatocellular disease or chronic cholestatic liver disease. The mean level of plasma endopeptidase 24.11 activity was 13 times higher in cholestatic patients than in controls or patients with hepatocellular disease (p < 0.01).

Rebecca W. Van Dyke, Karen V. Root – 1 September 1993 – Treatment with ethinyl estradiol is known to impair bile formation, bile acid transport and Na,K‐ATPase activity, to alter receptor‐mediated endocytosis and transcytosis of IgA and asialoorosomucoid and to affect membrane lipid composition and fluidity.