Abstract:
BACKGROUND & AIMS:Liver failure is associated with progressive cytotoxic brain oedema (astrocyte swelling), which underlies hepatic encephalopathy (HE). Ammonia and superimposed inflammation are key synergistic factors in HE, but the mechanism(s) involved remain unknown. We aimed to determine whether aquaporin-4 (AQP4), an astrocyte endfeet bi-directional water channel, is associated with the brain oedema of HE. METHOD:Rats (n=60) received sham-operation (sham), 5 days hyperammonaemia-inducing diet (HD), galactosamine (GALN) induced acute liver failure (ALF), 4 weeks bile duct-ligation (BDL) induced cirrhosis, or caecal ligation and puncture (CLP), a 24h model of bacterial peritonitis. Rats from every group (except CLP) were randomised to receive intraperitoneal injections of lipopolysaccharide (LPS; 1mg/kg) or saline, prior to termination 3h later. Brain water, AQP4 protein expression (western blot) and AQP4 localisation by immunogold electron microscopy were investigated. RESULTS:Significant hyperammonaemia was observed in saline-injected BDL (p<0.05), GALN (p<0.01), and HD (p<0.01), compared to sham rats. LPS injection did not affect arterial ammonia or plasma biochemistry in any of the treatment groups. Increased brain water was observed in saline-injected GALN (p<0.05), HD (p<0.01), and CLP (p<0.001) compared to sham rats. Brain water was numerically increased in BDL rats, but this failed to reach significance (p=0.09). LPS treatment further increased oedema significantly in all treatment groups (p<0.05, respectively). AQP4 expression was significantly increased in saline-injected BDL (p<0.05), but not other treatment groups, compared to sham rats. Membrane polarisation was maintained in BDL rats. CONCLUSION:The results suggest that AQP4 is not directly associated with the development of brain oedema in liver failure, hyperammonaemia, or sepsis. In cirrhosis, there is increased AQP4 protein expression, but membrane polarisation, is maintained, possibly in a compensatory attempt to limit severe brain oedema.
journal_name
J Hepatoljournal_title
Journal of hepatologyauthors
Wright G,Soper R,Brooks HF,Stadlbauer V,Vairappan B,Davies NA,Andreola F,Hodges S,Moss RF,Davies DC,Jalan Rdoi
10.1016/j.jhep.2010.02.020subject
Has Abstractpub_date
2010-07-01 00:00:00pages
91-7issue
1eissn
0168-8278issn
1600-0641pii
S0168-8278(10)00183-2journal_volume
53pub_type
杂志文章abstract::We previously reported that high-dose ursodeoxycholate (UDC) infusion in rats resulted in extensive glucuronidation of UDC, and speculated that the glucuronidation causes bicarbonate-rich hypercholeresis induced by UDC (Takikawa, H., Sano, N., Narita, T. and Yamanaka, M. Hepatology 1990; 11: 743-749). To test this hyp...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/0168-8278(92)90015-h
更新日期:1992-05-01 00:00:00
abstract:BACKGROUND/AIMS:No study has compared the liver fibrosis progression rates among chronic liver diseases and the risk factors in order to better organize screening strategies. METHODS:A total of 4852 patients were retrospectively studied (chronic hepatitis C (HCV) [n=2313], human immunodeficiency virus (HIV)-HCV co-inf...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(02)00413-0
更新日期:2003-03-01 00:00:00
abstract:BACKGROUND/AIMS:In order to explore the role of cytokines in the pathogenesis of liver cirrhosis, we analyzed their gene expression in hepatic biopsies from patients with alcoholic liver cirrhosis, post-hepatitis C liver cirrhosis, and with idiopathic portal hypertension without cirrhosis. METHODS:We assessed the gene...
journal_title:Journal of hepatology
pub_type: 临床试验,杂志文章
doi:10.1016/s0168-8278(96)80140-1
更新日期:1996-05-01 00:00:00
abstract:BACKGROUND & AIMS:Resveratrol, a polyphenol found in a variety of fruits, exerts a wide range of beneficial effects on the endothelium, regulates multiple vasoactive substances and decreases oxidative stress, factors involved in the pathophysiology of portal hypertension. Our study aimed at evaluating the effects of re...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2012.12.012
更新日期:2013-05-01 00:00:00
abstract:BACKGROUND/AIMS:Whether GB virus C and hepatitis G virus participate in fulminant hepatic failure is controversial. We studied the prevalence of the viral RNA in 48 patients. There were possible routes of infection, including blood transfusion, in 22 patients (group 1), and no risk factors in the other 26 (group 2). M...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(97)80138-9
更新日期:1997-12-01 00:00:00
abstract:BACKGROUND/AIMS:Venous hyporesponsiveness in portal hypertension has been reported previously by us. The present study was undertaken to investigate possible changes of phosphoinositide signal transduction pathway in the portal veins from portal hypertensive rats METHODS:Portal hypertension was induced by partial port...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(97)80055-4
更新日期:1997-02-01 00:00:00
abstract::The case for using emergency liver transplantation in acute liver failure was made two decades ago by a series of single centre experiences. The development of models identifying a poor prognosis assisted the selection of patients for liver transplantation but none of these delivers both high sensitivity and specifici...
journal_title:Journal of hepatology
pub_type: 杂志文章,评审
doi:10.1016/j.jhep.2013.10.024
更新日期:2014-03-01 00:00:00
abstract:BACKGROUND AIMS:In hepatitis C there is controversy over the linearity of the rate of progression and the significance of gender, mode of infection and viral factors. METHODS:2313 untreated patients with a reliable estimated duration of infection and liver fibrosis were included. Fibrosis progression was calculated us...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(00)00097-0
更新日期:2001-05-01 00:00:00
abstract:BACKGROUND/AIMS:S-adenosylmethionine (SAM) is a thiol-containing compound with known therapeutic affects on cholestasis and hepatotoxicity. The aim of this study was to investigate the effect of SAM on the prevention of mitochondrial injury induced by hepatic ischemia and reperfusion. METHODS/RESULTS:Rats were subject...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(00)00045-3
更新日期:2001-03-01 00:00:00
abstract:BACKGROUND/AIMS:We previously reported that the populations of lymphocytes and the expression of activated antigens in human sinusoidal mononuclear cells were different from those in peripheral blood mononuclear cells. Attempts to culture these cells for further study failed because they died rapidly under standard cul...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(97)80016-5
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND & AIMS:Ischemia-reperfusion (IR) of liver results in hepatocytes (HP) and sinusoidal endothelial cells (LSEC) irreversible damage. Ischemic preconditioning protects IR damage upon adenosine A2a receptor (A2aR) stimulation. Understanding the phenotypic changes that underlie hepatocellular damage and protectio...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2014.10.007
更新日期:2015-03-01 00:00:00
abstract:BACKGROUND & AIMS:Prevalence data for hepatitis B and C and an evaluation of a guideline based screening in the primary care setting are not yet available. We therefore implemented a hepatitis B surface antigen (HBsAg) and anti-hepatitis C virus (HCV) screening and developed guideline based screening strategies. METHO...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2015.01.011
更新日期:2015-06-01 00:00:00
abstract::This study reports that thrombocytopenia is a universal phenomenon post hepatic transplantation. In 53 consecutive adult patients undergoing liver transplantation the platelet count fell by a mean of 63% (157 x 10(9)/l to 50 x 10(9)/l). The platelet count reached a nadir at Day 5 post-transplant but returned to pre-op...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(05)80089-3
更新日期:1992-09-01 00:00:00
abstract:BACKGROUND/AIMS:The number of perisinusoidal myofibroblasts has been shown to be increased in hepatocellular carcinoma, as compared to cirrhosis. This increase might suggest a cooperative relationship between tumour cells and myofibroblasts. To assess this relationship, we undertook: (a) an immunohistochemical study to...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(98)80186-4
更新日期:1998-07-01 00:00:00
abstract:BACKGROUND:Chronic liver disease and liver transplantation (LT) can delay both timing and ability of women to conceive. With increased awareness and availability of in vitro fertilisation (IVF), the need for accurate counselling is paramount. To date, minimal data exists to inform outcomes of IVF in patients with chron...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2020.12.022
更新日期:2021-01-15 00:00:00
abstract:BACKGROUND/AIMS:The applicability of adult-to-adult living donor liver transplantation has not been established yet. We report the first data in a European center of the process leading to this procedure from the first moment the patients were informed about it. METHODS:In phase 1 of the process, 121 adult patients en...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2005.02.016
更新日期:2005-07-01 00:00:00
abstract::The Hepatitis Delta Virus (HDV), a defective ribonucleic acid virus dependent on the Hepatitis B Virus (HBV) is a cause of severe liver disease that often leads to cirrhosis and death. Since the HDV finds in the HBV infection a biological niche in which to thrive indefinitely, the major victims of its infection are th...
journal_title:Journal of hepatology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0168-8278(86)80125-8
更新日期:1986-01-01 00:00:00
abstract:BACKGROUND/AIMS:Severe alcoholic hepatitis occurs mainly in patients with cirrhosis, and has a high death rate. Corticosteroid therapy has been particularly advocated as reducing mortality in patients with severe histologic lesions. However, identification of these patients is difficult, requiring transvenous liver bio...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(00)80391-8
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND/AIMS:Bacillus Calmette Guerin (BCG) infection causes hepatic injury following granuloma formation and secretion of cytokines which render mice highly sensitive to endotoxin-mediated hepatotoxicity. This work investigates the role of inducible nitric oxide synthase (iNOS) in liver damage induced by BCG and en...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2004.07.031
更新日期:2004-11-01 00:00:00
abstract:BACKGROUND/AIMS:In the absence of liver damage, rapid liver growth can be induced pharmacologically by so-called primary liver growth promoters. The importance of the acute-phase cytokines interleukin-6 and tumor necrosis factor-alpha for the actions of these compounds is not clear. This study aimed to investigate the ...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(00)80130-0
更新日期:2000-12-01 00:00:00
abstract:BACKGROUND/AIMS:The impact of dietary fatty acids on the development of cancers is highly controversial. We recently demonstrated that unsaturated fatty acids trigger the downregulation of the tumor suppressor PTEN through an mTOR/NF-kappaB-dependent mechanism in hepatocytes. In this study, we investigated whether unsa...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2009.01.027
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND AND AIMS:Fatty acid translocase CD36 (CD36) is a membrane protein with multiple immuno-metabolic functions. Palmitoylation has been suggested to regulate the distribution and functions of CD36, but little is known about its significance in non-alcoholic steatohepatitis (NASH). METHODS:Human liver tissue sam...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2018.04.006
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND & AIMS:Given an appreciable risk of adverse-effects, current therapies for chronic hepatitis C virus (HCV) infection pose a dilemma to patients. We explored, via simulation modelling, patient-important benefits of attaining a sustained viral response (SVR). METHODS:We created the HCV Individualised Treatmen...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2014.01.020
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND/AIM:Smooth muscle antibodies and antinuclear antibodies characterize type 1 autoimmune hepatitis. Our aim was to correlate the appearance and disappearance of these autoantibodies with clinical and histological events. METHODS:One hundred and seven patients were evaluated successively over 128+/-9 months. A...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(99)80096-8
更新日期:1999-03-01 00:00:00
abstract:BACKGROUND/AIMS:The administration of a methionine and choline deficient (MCD) diet to mice serves as an animal model of NASH. The multidrug resistant 2 (Mdr2) P-glycoprotein encodes for the canalicular phospholipid transporter, and Mdr2 (+/-) mice secrete 40% less phosphatidylcholine than wild-type mice. We have hypot...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2005.08.026
更新日期:2006-03-01 00:00:00
abstract:BACKGROUND/AIMS:In these studies, we tested the hypothesis that increased lipid intake would exacerbate the severity of nutritional steatohepatitis. METHODS:C57Bl/6J mice were fed methionine-and-choline deficient (MCD) diets containing 20% (high) or 5% (low) fat by weight for 3 weeks and compared to lipid-matched cont...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2008.03.026
更新日期:2008-09-01 00:00:00
abstract::Surveillance of patients at risk of developing hepatocellular carcinoma (HCC) is based on ultrasound (US) examinations performed at either 6 or 12 month intervals. Early detection of HCC in patients with cirrhosis is a challenging issue, since the different entities that are involved in the multi-step process of hepat...
journal_title:Journal of hepatology
pub_type: 杂志文章,评审
doi:10.1016/j.jhep.2008.02.005
更新日期:2008-05-01 00:00:00
abstract:BACKGROUND & AIMS:Non-alcoholic fatty liver disease (NAFLD), type 2 diabetes (T2D) and obesity are epidemiologically correlated with each other but the causal inter-relationships between them remain incompletely understood. We aimed to explore the causal relationships between the 3 diseases. METHODS:Using both UK Biob...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2020.03.006
更新日期:2020-08-01 00:00:00
abstract:BACKGROUND/AIMS:Orthotopic liver transplantation has been shown to improve survival in fulminant hepatic failure. However, after orthotopic liver transplantation life-long immunosuppression is necessary and graft complications may occur. METHODS:We employed heterotopic auxiliary liver transplantation in a 26-year-old ...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/0168-8278(95)80323-8
更新日期:1995-08-01 00:00:00
abstract::Treatment of hepatic fibrosis by simple and inexpensive therapies is a new challenge for the near future. Hepatic fibrosis which may lead to cirrhosis, is indeed associated with most chronic liver diseases and affects millions of people. During the last decade, major breakthroughs have been accomplished in the field o...
journal_title:Journal of hepatology
pub_type: 评论,杂志文章,评审
doi:10.1016/s0168-8278(05)80002-9
更新日期:1993-04-01 00:00:00