Functional involvement of proteins, interacting with sphingolipids, in sphingolipid transport to the canalicular membrane in the human hepatocytic cell line, HepG2?

Mirjam M. P. Zegers, Kristien J. M. Zaal, Dick Hoekstra – 30 December 2003 – A photoreactive sphingolipid precursor was used to investigate the potential involvement of protein‐lipid interactions that may convey specificity to sphingolipid transport in the human hepatoma cell line, HepG2. A 125I‐labeled, photoreactive ceramide, 125I‐N3 ‐Cer, was incubated with the cells and became incorporated into two sphingolipid products.

Tenoxicam, a non‐steroid anti‐inflammatory drug, is unable to increase the response rate in patients with chronic hepatitis C treated by alpha interferon

Jean‐Pierre Zarski, Marianne Maynard‐Muet, Suzanne Chousterman, Maryline Baud, Raphaëlle Barnoud, Armand Abergel, Yannick Bacq, Jean‐Marc Combis, Xavier Causse, Albert Tran, Frédéric Oberti, Anne Minello, Solange Bresson‐Hadni, François Bailly, Jean‐Jacques Raabe, Vincent Leroy, Lynda Hamici, Tariq Hicham, Marie‐France St Marc Girardin – 30 December 2003 – The purpose of this study is to compare a combination of interferon (IFN)‐α2 a (Roferon) + Tenoxicam with IFN‐α2 a alone in the treatment of chronic hepatitis C.

Analysis of T‐cell receptor β of the T‐cell clones reactive to the human PDC‐E2 163‐176 peptide in the context of HLA‐DR53 in patients with primary biliary cirrhosis

Y Ichiki, S Shimoda, H Hara, H Shigematsu, M Nakamura, K Hayashida, H Ishibashi, Y Niho – 30 December 2003 – T‐cell‐mediated autoimmune mechanisms are considered to be involved in the pathogenesis of primary biliary cirrhosis (PBC). In the previous study, we identified the immunodominant T‐cell epitope on the E2 component of pyruvate dehydrogenase complex (PDC‐E2) in patients with PBC who have HLA‐DRB4*0101.

Serum autoantibodies in chronic hepatitis C: Comparison with autoimmune hepatitis and impact on the disease profile

F Cassani, M Cataleta, P Valentini, P Muratori, F Giostra, R Francesconi, L Muratori, M Lenzi, G Bianchi, D Zauli, F B Bianchi – 30 December 2003 – Antibodies to nuclei (ANA), smooth muscle (SMA), and liver/kidney microsomes type 1 (anti‐LKM1) may occur in chronic hepatitis C. Distinct subspecificities, including ANA with the homogeneous pattern (ANA‐H) and SMA with antiactin specificity (SMA‐AA), are found in autoimmune hepatitis (AIH).

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.

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