Changes in type IV collagen content in livers of patients with alcoholic liver disease

Mikihiro Tsutsumi, Sachio Urashima, Yoshiro Matsuda, Shujiro Takase, Akira Takada – 1 May 1993 – An increase of serum type IV collagen levels in patients with liver disease has been reported; however, the mechanisms of this increase are not yet well known. We recently developed an assay system for type IV collagen content in liver biopsy specimens. In this study, type IV collagen content in the livers and sera of patients with alcoholic liver disease and nonalcoholic liver disease was determined.

Quantitative assessment of hepatocellular function through in vivo radioreceptor imaging with technetium 99m galactosyl human serum albumin

Masatoshi Kudo, Akio Todo, Katsuji Ikekubo, Kazutaka Yamamoto, David R. Vera, Robert C. Stadalnik – 1 May 1993 – Technetium 99m diethylenetriaminepentaacetic acid–galactosyl human serum albumin is a newly developed analog ligand to asialoglycoprotein receptor, which is a hepatic cell surface receptor specific for galactose‐terminated glycoproteins. Hepatic functional imaging, which yields estimates of asialoglycoprotein receptor concentration, was performed after intravenous injection of 3 mg technetium 99m diethylenetriaminepentaacetic acid–galactosyl human serum albumin.

Biliary abnormalities associated with extrahepatic portal venous obstruction

Mohammed Sultan Khuroo, Ghulam Nabi Yattoo, Showkat Ali Zargar, Gul Javid, Mohammed Yousuf Dar, Bashir Ahmed Khan, Mohammed Iqbal Boda – 1 May 1993 – We prospectively studied 21 consecutive patients with extrahepatic portal venous obstruction for evidence of biliary tract disease. Two patients were first seen with extrahepatic cholestasis; another had recurrent cholangitis. All three patients with clinically manifest biliary disease were adults. Another five patients had icterus on clinical examination.

Changes in hepatocyte water volume affect protein synthesis

Robert Wondergem – 1 May 1993 – Protein synthesis in isolated rat hepatocytes was determined from the incorporation of [3H]leucine (4 mM) into acid‐precipitable material in the presence of amino acids at twice their physiological concentration. Protein synthesis increased linearly with time and incubated cell protein, and was inhibited by cycloheximide by more than 95%. In normo‐osmotic incubations containing amino acids at twice the physiological concentrations the rate of [3H]leucine incorporation was 5.8 ± 0.2 nmol/h per mg cell protein (n = 26).

Functional inactivation of neutrophils with a Mac‐1 (CD11b/CD18) monoclonal antibody protects against ischemia‐reperfusion injury in rat liver

Hartmut Jaeschke, Anwar Farhood, Abraham P. Bautista, Zoltan Spolarics, John J. Spitzer, C. Wayne Smith – 1 May 1993 – The role of neutrophil CD11b/CD18 (Mac‐1) adhesion proteins in the pathogenesis of hepatic reperfusion injury was investigated in an experimental model. Male Fischer rats were treated with a CD11b monoclonal antibody or an isotype‐matched IgM control antibody and subjected to 45 min of hepatic ischemia followed by 24 hr of reperfusion.

Frequent loss of heterozygosity on chromosome 22 in hepatocellular carcinoma

Kazuhiro Takahashi, Jiro Kudo, Hiromi Ishibashi, Yasuhiko Hirata, Yoshiyuki Niho – 1 May 1993 – We investigated 24 hepatocellular carcinomas in Japan to find loss of heterozygosity with 15 polymorphic DNA markers that detect allelic losses at specific chromosome loci. Loss of heterozygosity on chromosomes 10q, 17p and 22q was detected in 3 of 12 (25%), 9 of 21 (43%) and 5 of 15 (33%) informative cases of hepatocellular carcinoma, respectively.

Lack of mother‐to‐infant transmission of hepatitis C virus in human immunodeficiency virus–seronegative women: A prospective study with hepatitis C virus RNA testing

Françoise Roudot‐Thoraval, Jean‐Michel Pawlotsky, Valérie Thiers, Lionel Deforges, Pierre‐Paul Girollet, François Guillot, Christiane Huraux, Pascale Aumont, Christian Brechot, Daniel Dhumeaux – 1 May 1993 – The published risk of mother‐to‐infant transmission of hepatitis C virus varies according to the population studied and the tests used. In a prospective study we used the polymerase chain reaction to assess the risk of vertical transmission of hepatitis C virus in an unselected population of women uninfected by human immunodeficiency virus.

Drug targeting to the liver with bile acids: THE “trojan horse” resurrected?

Dirk K. F. Meijer – 1 May 1993 – Bile acids are selectively taken up from portal blood into the liver by specific transport systems in the hepatocyte plasma membrane. Therefore, studies were performed to evaluate the potential of bile acids as shuttles to deliver drugs specifically to the liver. The alkylating cytostatic drug chlorambucii and the fluorescent prolyl‐4‐hydroxylase inhibitor 4‐nitrobenzo‐2‐oxa‐1,3‐diazol‐β‐Ala‐Phe‐5‐oxaproline‐Gly were covalently linked via an amide bond to 7α, 12α,‐dihydroxy‐3β‐(ω‐aminoalkoxy)‐5‐β‐cholan‐24‐oic acid.

Monoclonal antibody against the CD18 adhesion molecule stimulates glucose uptake by the liver and hepatic nonparenchymal cells

Abraham P. Bautista, Zoltan Spolarics, Hartmut Jaeschke, C. Wayne Smith, John J. Spitzer – 1 May 1993 – Neutrophils and macrophages play an important role in the body's microbicidal defense and have been implicated in the induction of tissue injury in reperfusion, endotoxemia and septic shock. Cellular host defense is accompanied by enhanced glucose use. In this study we examined the effect of monoclonal antibody 1F12 on in vivo glucose use by selected tissues and hepatic phagocytes.

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