Identification of local and circulating cancer stem cells in human liver cancer

Zhen Fan Yang, Patricia Ngai, David W. Ho, Wan Ching Yu, Michael N.P. Ng, Chi Keung Lau, Mandy L. Y. Li, Ka Ho Tam, Chi Tat Lam, Ronnie T. P. Poon, Sheung Tat Fan – 26 February 2008 – Increasing evidence has revealed the importance of cancer stem cells (CSCs) in carcinogenesis. Although liver CSCs have been identified in hepatocellular carcinoma (HCC) cell lines, no data have shown the presence of these cells in human settings. The present study was designed to delineate CSCs serially from HCC cell lines, human liver cancer specimens to blood samples, using CD90 as a potential marker.

Wnt2 acts as a cell type–specific, autocrine growth factor in rat hepatic sinusoidal endothelial cells cross‐stimulating the VEGF pathway

Diana Klein, Alexandra Demory, Francis Peyre, Jens Kroll, Hellmut G. Augustin, Wijnand Helfrich, Julia Kzhyshkowska, Kai Schledzewski, Bernd Arnold, Sergij Goerdt – 26 February 2008 – The mechanisms regulating the growth and differentiation of hepatic sinusoidal endothelial cells (HSECs) are not well defined. Because Wnt signaling has become increasingly important in developmental processes such as vascular and hepatic differentiation, we analyzed HSEC‐specific Wnt signaling in detail.

Defective endothelial nitric oxide synthase signaling is mediated by rho‐kinase activation in rats with secondary biliary cirrhosis

Go Anegawa, Hirofumi Kawanaka, Daisuke Yoshida, Kozo Konishi, Shohei Yamaguchi, Nao Kinjo, Akinobu Taketomi, Makoto Hashizume, Hiroaki Shimokawa, Yoshihiko Maehara – 26 February 2008 – In liver cirrhosis, down‐regulation of endothelial nitric oxide synthase (eNOS) has been implicated as a cause of increased intrahepatic resistance. We investigated whether Rho‐kinase activation is one of the molecular mechanisms involved in defective eNOS signaling in secondary biliary cirrhosis. Liver cirrhosis was induced by bile duct ligation (BDL).

Comprehensive and quantitative proteome profiling of the mouse liver and plasma

Keane K. Y. Lai, Deepak Kolippakkam, Laura Beretta – 26 February 2008 – We report a comprehensive and quantitative analysis of the mouse liver and plasma proteomes. The method used is based on extensive fractionation of intact proteins, further separation of proteins based on their abundance and size, and high‐accuracy mass spectrometry. This analysis reached a depth in proteomic profiling not reported to date for a mammalian tissue or a biological fluid, with 7099 and 4727 proteins identified with high confidence in the liver and in the corresponding plasma, respectively.

Liver disease in pregnancy

J. Eileen Hay – 26 February 2008 – Abnormal liver tests occur in 3%–5% of pregnancies, with many potential causes, including coincidental liver disease (most commonly viral hepatitis or gallstones) and underlying chronic liver disease. However, most liver dysfunction in pregnancy is pregnancy‐related and caused by 1 of the 5 liver diseases unique to the pregnant state: these fall into 2 main categories depending on their association with or without preeclampsia.

The cyclophilin inhibitor Debio‐025 shows potent anti–hepatitis C effect in patients coinfected with hepatitis C and human immunodeficiency virus

Robert Flisiak, Andrzej Horban, Philippe Gallay, Michael Bobardt, Suganya Selvarajah, Alicja Wiercinska‐Drapalo, Ewa Siwak, Iwona Cielniak, Jozef Higersberger, Jarek Kierkus, Christian Aeschlimann, Pierre Grosgurin, Valérie Nicolas‐Métral, Jean‐Maurice Dumont, Hervé Porchet, Raf Crabbé, Pietro Scalfaro – 26 February 2008 – Debio‐025 is an oral cyclophilin (Cyp) inhibitor with potent anti–hepatitis C virus activity in vitro. Its effect on viral load as well as its influence on intracellular Cyp levels was investigated in a randomized, double‐blind, placebo‐controlled study.

S‐adenosylmethionine inhibits lipopolysaccharide‐induced gene expression via modulation of histone methylation

Ainhoa Iglesias Ara, Meng Xia, Komal Ramani, José M. Mato, Shelly C. Lu – 21 February 2008 – We previously showed that S‐adenosylmethionine (SAMe) and its metabolite methylthioadenosine (MTA) blocked lipopolysaccharide (LPS)‐induced tumor necrosis factor α (TNFα) expression in RAW (murine macrophage cell line) and Kupffer cells at the transcriptional level without affecting nuclear factor κ B nuclear binding. However, the exact molecular mechanism or mechanisms of the inhibitory effect were unclear. While SAMe is a methyl donor, MTA is an inhibitor of methylation.

Modest wine drinking and decreased prevalence of suspected nonalcoholic fatty liver disease

Winston Dunn, Ronghui Xu, Jeffrey B. Schwimmer – 21 February 2008 – People at risk for coronary heart disease are often at risk for nonalcoholic fatty liver disease (NAFLD). The association of modest wine consumption with NAFLD has not been studied and the recommendation of wine for patients at risk for both diseases is controversial. The aim is to test the hypothesis that modest wine consumption is associated with decreased prevalence of NAFLD.

Subscribe to