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.

Relaxing effect of interleukin‐1 on rat cultured Ito cells

M Sakamoto, T Ueno, H Sugawara, T Torimura, R Tsuji, K Sujaku, M Sata, K Tanikawa – 30 December 2003 – Interleukin‐1β (IL‐1β) is closely involved in liver disorders. IL‐1β produces nitric oxide (NO) in vascular smooth muscle cells and relaxes vascular smooth muscle via cyclic guanosine 3′,5′‐monophosphate (cGMP). In this study, we evaluated the relaxing effect of IL‐1β on cultured Ito cells. Ito cells were isolated from the livers of male Wistar rats and cultured for 24 hours.

Absence of NO synthase type II expression in fetal liver from pregnant rats under septic shock conditions

M Casado, M Velasco, L Bosca, P Martin‐Sanz – 30 December 2003 – Treatment of rats at 21 days' gestation with lipopolysaccharide (LPS) induced type II NO synthase (iNOS) expression in maternal liver but completely failed to elicit this response in the corresponding fetal tissue. The impaired response of fetal liver cannot be attributed to alterations in the sensitivity of this organ to LPS or to proinflammatory cytokines involved in iNOS expression (tumor necrosis factor α [TNF‐α], interferon gamma [IFN‐γ]), because cultured fetal and adult hepatocytes similarly responded to these factors.

Influence of malnutrition on the prevalence of bacterial translocation and spontaneous bacterial peritonitis in experimental cirrhosis in rats

F Casafont, E Sanchez, L Martin, J Aguero, F P Romero – 30 December 2003 – Bacterial translocation (BT) has been involved in the pathogenesis of spontaneous bacterial peritonitis (SBP) in experimental cirrhosis. Because malnutrition is a common feature in cirrhosis, the aim of this study was to evaluate the effect of nutrition on BT and SBP. We induced cirrhosis in 44 Sprague‐Dawley rats by administration of oral CCl4, and, afterward, 26 animals were maintained with dietary restriction. Cultures of mesenteric lymph nodes (MLN), peripheral and portal blood, liver, and spleen were performed.

Effect of ileal autotransplantation on cholesterol, bile acids, and biliary lipids in pigs with proximal small bowel resection

M Pakarinen, T A Miettinen, P Kuusanmaki, P Vento, T Kivisto, J Halttunen – 30 December 2003 – Our major aim was to investigate the consequences of ileal autotransplantation in pigs with proximal small intestinal resection on biliary lipids and metabolism of bile acids. Biliary lipid secretion rates and bile acid absorption were assessed by measuring dietary and biliary lipids, fractional cholesterol absorption, and fecal excretion of cholesterol and bile acids.

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