Effects of dilutional hyponatremia on brain organic osmolytes and water content in patients with cirrhosis

Tea Restuccia, Beatriz Gómez‐Ansón, Mónica Guevara, Carlo Alessandria, Aldo Torre, M. Elena Alayrach, Carlos Terra, Marta Martín, Magda Castellví, Lorena Rami, Aitor Sainz, Pere Ginès, Vicente Arroyo – 27 May 2004 – In advanced cirrhosis there is a reduction in the brain concentration of many organic osmolytes, particularly myo‐inositol (MI). Hyponatremia could theoretically aggravate these changes as a result of hypo‐osmolality of the extracellular fluid. The aim of this study was to determine the effects of hyponatremia on brain organic osmolytes and brain water content in cirrhosis.

Patient and graft survival after liver transplantation for hereditary hemochromatosis: Implications for pathogenesis

Darrell H.G. Crawford, Linda M. Fletcher, Stefan G. Hubscher, Katherine A. Stuart, Edward Gane, Peter W. Angus, Gary P. Jeffrey, Geoffrey W. McCaughan, Paul Kerlin, Lawrie W. Powell, Elwyn E. Elias – 27 May 2004 – The clinical outcome of patients who have undergone liver transplantation for hereditary hemochromatosis (HH) or who have received iron‐loaded donor grafts is unclear. We reviewed 3,600 adult primary orthotopic liver transplants and assessed the outcomes in 22 patients with HH. We also evaluated graft function and iron mobilization in 12 recipients of iron‐loaded donor grafts.

HBsAg seroclearance in chronic hepatitis B in the Chinese: Virological, histological, and clinical aspects

Man‐Fung Yuen, Danny Ka‐Ho Wong, Erwin Sablon, Eric Tse, Irene Oi‐Lin Ng, He‐Jun Yuan, Chung‐Wah Siu, Tamara J. Sander, Eric J. Bourne, Jeff G. Hall, Lynn D. Condreay, Ching‐Lung Lai – 27 May 2004 – Few studies have examined Chinese patients with chronic hepatitis B who exhibit hepatitis B surface antigen (HBsAg) seroclearance. We comprehensively studied the biochemical, virological, histological, and clinical aspects of 92 patients with HBsAg seroclearance (median follow‐up, 126 months).

Peginterferon alfa‐2a (40 kd) and ribavirin for black American patients with chronic HCV genotype 1

Lennox J. Jeffers, William Cassidy, Charles D. Howell, Sylvia Hu, K. Rajender Reddy – 27 May 2004 – Black Americans (blacks) have a high prevalence of chronic hepatitis C virus (HCV) infection and respond poorly to therapy with interferon alfa‐based regimens, but they have been underrepresented in clinical trials. The aim of this study was to assess the rate of sustained virological response (SVR) to peginterferon alfa‐2a (40 kd) in combination with ribavirin in black patients chronically infected with HCV genotype 1.

Nitric oxide protects rat hepatocytes against reperfusion injury mediated by the mitochondrial permeability transition

Jae‐Sung Kim, Shigetoshi Ohshima, Peter Pediaditakis, John J. Lemasters – 27 May 2004 – We investigated the effects of nitric oxide (NO) on hepatocellular killing after simulated ischemia/reperfusion and characterized signaling factors triggering cytoprotection by NO. Cultured rat hepatocytes were incubated in anoxic Krebs‐Ringer–HEPES buffer at pH 6.2 for 4 hours and reoxygenated at pH 7.4 for 2 hours.

Endogenous ursodeoxycholic acid and cholic acid in liver disease due to cystic fibrosis

Jeffery L. Smith, Peter J. Lewindon, Anita C. Hoskins, Tamara N. Pereira, Kenneth D. R. Setchell, Nancy C. O'Connell, Ross W. Shepherd, Grant A. Ramm – 27 May 2004 – Focal biliary cirrhosis causes significant morbidity and mortality in cystic fibrosis (CF). Although the mechanisms of pathogenesis remain unclear, bile acids have been proposed as potential mediators of liver injury. This study examined bile acid composition in CF and assessed altered bile acid profiles to determine if they are associated with incidence and progression of liver injury in CF‐associated liver disease (CFLD).

Interleukin‐1β represses MRP2 gene expression through inactivation of interferon regulatory factor 3 in HepG2 cells

Keiji Hisaeda, Akihiko Inokuchi, Takanori Nakamura, Yukihide Iwamoto, Kimitoshi Kohno, Michihiko Kuwano, Takeshi Uchiumi – 27 May 2004 – The human multidrug resistance protein 2 (MRP2/ABCC2), expressed on the bile canalicular membrane, mediates the multispecific efflux of several organic anions, including conjugates of glucuronate, sulfate, and glutathione. Expression of MRP2 can be altered in response to environmental stimuli such as cholestasis and jaundice.

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