Functional assessment of proliferating hepatocytes stimulated by hepatic stimulatory substance in ascorbic acid biosynthetic enzyme‐deficient rats

F Nakazawa, M Sawa, B Jiang, K Onodera, S Kasai, M Mito – 30 December 2003 – The functional ability of hepatic stimulatory substance (HSS)‐stimulated proliferating hepatocytes was investigated by intrasplenic and/or intraportal transplantation in ascorbic acid (AsA) biosynthetic enzyme‐deficient (ODS‐od/od) rats that die of osteogenic disorders unless there is AsA supplementation. HSS was extracted from regenerating porcine livers.

Effect of side chain length on biotransformation, hepatic transport, and choleretic properties of chenodeoxycholyl homologues in the rodent: Studies with dinorchenodeoxycholic acid, norchenodeoxycholic acid, and chenodeoxycholic acid

H Yeh, C D Schteingart, L R Hagey, H Ton‐Nu, U Bolder, M A Gavrilkina, J H Steinbach, A F Hofmann – 30 December 2003 – To assess the effect of side chain length on the metabolism and physiological effects of homologues of chenodeoxycholic acid (CDCA), dinorCDCA, the C22 homologue, was synthesized and its hepatic biotransformation, transport kinetics, and choleretic properties were defined in rat and hamster biliary fistula and in isolated perfused rat liver. Results were compared with those of norCDCA, the C23 homologue, and of CDCA, the natural C24 homologue.

Hepatic stellate cell immunodetection and cirrhotic evolution of viral hepatitis in liver allografts

M Guido, M Rugge, G Leandro, I M Fiel, S N Thung – 30 December 2003 – Patients with chronic viral hepatitis are at high risk of developing cirrhosis, but the outcome of the disease in a given patient is unpredictable. Hepatic stellate cells have been demonstrated to be the most important cell type involved in hepatic fibrogenesis, regardless of the cause of the liver injury. The α isotype of actin (a phenotypic marker of smooth muscle cells) may be expressed by hepatic stellate cells, reflecting their “activation” to myofibroblast‐like cells.

Mini‐microabscess syndrome in liver transplant recipients

G A MacDonald, J K Greenson, E A DelBuono, W M Grady, R M Merion, T S Frank, M R Lucey, H D Appelman – 30 December 2003 – Cytomegalovirus (CMV) is a significant cause of morbidity in immunosuppressed patients. It is characterized in the liver by parenchymal microabscesses, usually containing CMV‐infected cells. However, not all hepatic microabscesses are due to CMV infection. In 1992, we described “mini” microabscess (MMA) syndrome, a distinct clinical syndrome that occurs in transplanted livers.

Effects of S‐adenosyl‐L‐methionine on hepatic and renal oxidative stress in an experimental model of acute biliary obstruction in rats

J A Gonzalez‐Correa, J P De La Cruz, E Martin‐Aurioles, M A Lopez‐Egea, P Ortiz, F Sanchez de la Cuesta – 30 December 2003 – We used an animal model of extrahepatic biliary obstruction of 7 days' duration to study the production of thiobarbituric acid reactive substances (TBARS), total glutathione (TG), reduced glutathione (GSH), and oxidized glutathione (GSSG), and the enzymatic activities of GSH‐ peroxidase, GSSG‐reductase, and GSH‐transferase.

ClQ synthesis by tissue mononuclear phagocytes from normal and from damaged rat liver: Up‐regulation by dexamethasone, down‐regulation by interferon gamma, and lipopolysaccharide

T Armbrust, B Nordmann, M Kreißig, G Ramadori – 30 December 2003 – The subcomponent of complement C1, C1q, mediates complement activation via the classical pathway, and therefore may play an important role in the inflammatory processes in which complement activation is involved. The aim of our study was to investigate C1q synthesis by macrophages of normal and of acutely damaged livers. The localization of C1q in liver tissue was studied by immunohistochemistry.

Liver transplantation for alcoholic liver disease: Evaluation of a selection protocol

A C Anand, B H Ferraz‐Neto, P Nightingale, D F Mirza, A C White, P McMaster, J M Neuberger – 30 December 2003 – We have used a formal transplant protocol to select patients with alcoholic liver disease (ALD) for transplantation. We retrospectively analyzed all the patients with ALD who were referred specifically for transplantation to our Liver Unit between 1987 and 1994. Patients were selected for liver transplantation if they had end‐stage liver disease and had remained abstinent from the time they were medically advised to stop alcohol intake.

Serum IgA, IgG, and IgM antibodies directed against acetaldehyde‐derived epitopes: Relationship to liver disease severity and alcohol consumption

K Viitala, Y Israel, J E Blake, O Niemela – 30 December 2003 – Chronic ethanol ingestion has been suggested to trigger the formation of antibodies that recognize acetaldehyde‐protein condensates. In this study, assays for immunoglobulin (Ig) A, IgG, and IgM antibodies to acetaldehyde‐derived adducts were performed on sera of 140 alcohol consumers, 19 patients with nonalcoholic liver disease (NALD), 35 healthy nondrinking controls, and 10 nondrinking patients with IgA or IgG myeloma. Anti‐acetaldehyde (Ach)‐adduct antibodies of each Ig isotype were found from the alcohol abusers.

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