1 November 1984

William V. Mcdermott – 1 November 1984

Mark I. Avigan, Kamal G. Ishak, Richard E. Gregg, Jay H. Hoofnagle – 1 November 1984 – Liver tissue of a newly diagnosed 30‐year‐old patient with abetalipoproteinemia was studied by light and electron microscopy. Despite accumulation of large quantities of lipid droplets in hepatocytes, the lobular architecture remained intact, and there was no fibrosis. Acanthocytes were readily identified in sinusoids by scanning electron microscopy. Profiles of rough endoplasmic reticulum, smooth endoplasmic reticulum and Golgi apparatus appeared normal by transmission electron microscopy.

Francesco B. Bianchi, Graziella Biagini, Giorgio Ballardini, Giovanna Cenacchi, Augusto Faccani, Emilio Pisi, Renzo Laschi, Lance Liotta, Spiridione Garbisa – 1 November 1984 – The immunohistologic distribution of fibronectin, laminin, type IV collagen and whole basement membrane was evaluated in liver biopsies from patients with chronic active liver disease. Fibronectin was consistently increased in the areas of piecemeal necrosis, portal tracts and fibrous septa. Laminin was not detected in normal liver parenchyma.

James W. Kesterson, G. Richard Granneman, Joseph M. Machinist – 1 November 1984 – Valproic acid (VPA), its unsaturated metabolites and pent‐4‐enoate (4‐PA) were studied for potential hepatotoxicity in rats. 4‐PA, 4‐en‐VPA and 2,4‐dien‐VPA were potent inducers of microvesicular steatosis in young rats. Microvesicular steatosis induced by the 4‐en‐VPA was accompanied by ultrastructural changes characterized by myeloid bodies, lipid vacuoles and mitochondrial abnormalities. Myeloid bodies and lipid vacuoles were seen to a lesser extent in 2,4‐dien‐VPA and 4‐PA‐treated rats.

Joseph B. Bogardus – 1 September 1984 – Monooctanoin is used clinically for dissolution of common bile duct cholesterol gallstones. A number of factors influencing the dissolution rate of cholesterol monohydrate in this solvent were investigated. Water increased cholesterol dissolution rate in a manner inconsistent with previous solubility measurements. Dissolution rate increased approximately 50% in the presence of 10 to 15% water in monooctanoin.

1 September 1984

Natarajan Rajagopalan, Siegfried Lindenbaum – 1 September 1984 – The binding of Ca2+ to micelles of glycine and taurine bile acid conjugates was studied using a Ca2+−‐specific electrode. An investigation of the effect of buffer concentration, pH, added electrolyte and lecithin was also performed. The results indicate that the binding of Ca2+ to bile salt micelles is dependent on the number of hydroxyl groups on the steroid nucleus and on the nature of the head conjugating group, namely, glycine or taurine.

Donald M. Small, Donna J. Cabral, David P. Cistola, John S. Parks, James A. Hamilton – 1 September 1984 – The ionization behavior of carboxylic acids including aliphatic chain fatty acids and bile acids in solutions, micelles, membranes and proteins is of considerable biological interest. The 13C nuclear magnetic resonance chemical shift of carboxyl carbon of a variety of acids has been shown to be a linear function of the state of ionization of the carboxyl group.

Edward W. Moore – 1 September 1984 – Calcium is present in all pigment gallstones as a salt of one or more of the anions in bile which are most readily precipitable by calcium: (i) carbonate; (ii) bilirubinate; (iii) phosphate, and (iv) “palmitate”. We term these “calcium‐sensitive” anions.