Abstract:
BACKGROUND/AIMS:The mechanism by which many cytochrome P450 (CYP) isozymes decrease during liver regeneration is unclear. Peptides and growth factors are thought to be involved. Putrescine, the first polyamine synthesised by ornithine decarboxylase, peaks early following partial hepatectomy and is known to play an essential role in hepatic regeneration. Gamma amino butyric acid was reported as a physiologic inhibitor of ornithine decarboxylase. In this work we studied the possible involvement of putrescine in the CYP reduction during liver regeneration. METHODS:Hepatectomised, putrescine-treated sham, and GABA-treated hepatectomised rats were used throughout. Total hepatic cytochrome P450, o-dealkylase activities (CYP1A1 and CYP2B1/2), nifedipine oxidase activity (CYP3A4), and Western blot assays of their respective apoproteins were analysed in liver microsomes. Putrescine levels in hepatic tissue were also measured. RESULTS:Partial hepatectomy and putrescine treatment induced a significant diminution in total CYP (50% and 30% of sham-operated rats, respectively). Gamma amino butyric acid treatment prevented this decrease in partially hepatectomised rats. Nifedipine oxidase activity of partially hepatectomised and putrescine-treated rats significantly decreased to 43% and 60% of that in sham-operated rats, respectively. Again, gamma amino butyric acid prevented the diminution in partially hepatectomised rats. No significant changes were observed in o-dealkylase activities. CONCLUSIONS:These results show that inducible CYP1A1 and CYP2B1/2, which are important in carcinogen metabolisation, are preserved after partial hepatectomy. However, constitutive CYP3A4, which represents 50% of total CYP and metabolises drugs like nifedipine, warfarin, acetaminophen, cyclosporin and FK-506, is reduced during liver regeneration. Our experiments suggest that endogenous putrescine is, at least, partly responsible for this decrease.
journal_name
J Hepatoljournal_title
Journal of hepatologyauthors
Favre C,Monti JA,Scapini C,Pellegrino J,Carnovale CE,Carrillo MCdoi
10.1016/s0168-8278(98)80295-xsubject
Has Abstractpub_date
1998-04-01 00:00:00pages
700-8issue
4eissn
0168-8278issn
1600-0641pii
S0168-8278(98)80295-Xjournal_volume
28pub_type
杂志文章abstract:BACKGROUND & AIMS:Non-alcoholic fatty liver disease (NAFLD) affects up to 30% of the population and signifies increased risk of liver fibrosis and cirrhosis, type 2 diabetes, and cardiovascular disease. Therapies are limited. Weight loss is of benefit but is difficult to maintain. We aimed at examining the effect of 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/j.jhep.2013.02.012
更新日期:2013-07-01 00:00:00
abstract::Since interferons are reported to inhibit collagen synthesis in vivo and in vitro, they are possible anti-fibrogenic drugs. However, little is known about the effect of interferons on connective tissue metabolism in liver disease. To investigate the effect, serum concentrations of the aminoterminal domain of procollag...
journal_title:Journal of hepatology
pub_type: 临床试验,杂志文章
doi:10.1016/s0168-8278(05)80173-4
更新日期:1993-08-01 00:00:00
abstract::Experimental autoimmune hepatitis was induced in C57BL/6 mice by immunization with syngeneic liver protein and adjuvant. Hepatitis was characterized by marked cellular infiltrates, but hepatic necrosis was mild to moderate. A small dose of endotoxin (25 micrograms/mouse) produced lethal hepatitis with elevation of ser...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(05)80548-3
更新日期:1993-11-01 00:00:00
abstract:BACKGROUND & AIMS:The advent of new chronic hepatitis C virus (HCV) therapies requires characterization of patients in order to predict adequate treatment. A good candidate marker is Programmed Cell Death-1 (PD-1) which is involved in progression of HCV infection. The aim of this study was to analyse the effect of seve...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2012.01.011
更新日期:2012-06-01 00:00:00
abstract::The purpose of the present study was to determine the effects of chronic portal diversion on antioxidant levels in the rat liver. Male Sprague-Dawley rats (n = 32) were used for these studies. An end-to-side portacaval anastomosis was constructed in 17 of the rats. Sham-operated rats (n = 15) served as controls. Two w...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/0168-8278(92)90167-n
更新日期:1992-03-01 00:00:00
abstract::A patient with evidence of chronic infection with hepatitis B virus (seropositive for hepatitis B surface antigen, and with antibody to hepatitis B e antigen) underwent renal transplantation, which subsequently failed. The patient developed abnormal liver function tests and 8 months after the removal of the transplant...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/0168-8278(95)80116-2
更新日期:1995-04-01 00:00:00
abstract:BACKGROUND & AIMS:Current techniques for predicting outcome and requirement for emergency liver transplantation (ELT) in acute liver failure (ALF) are imperfect, though The Kings College Criteria (KCC) are the most commonly applied tools for this purpose. Their performance in identification of patients with non-paracet...
journal_title:Journal of hepatology
pub_type: 杂志文章,meta分析
doi:10.1016/j.jhep.2010.03.023
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND/AIMS:Familial hypobetalipoproteinemia (FHBL) is a co-dominant disorder characterized by reduced plasma levels of low-density lipoproteins. It can be caused by mutations in the gene encoding apolipoprotein B-100 (apo B), leading to the formation of truncated apo Bs which have a reduced capacity to export lipi...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(00)80270-6
更新日期:2000-09-01 00:00:00
abstract:BACKGROUND/AIMS:The pathogenesis of the inflammatory lesion in primary sclerosing cholangitis is unknown. The clinical picture is characterized by i.a. episodes of fever, the cause of which also remains speculative. Previous studies of bacterial isolates in the liver or bile ducts in primary sclerosing cholangitis have...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(98)80316-4
更新日期:1998-03-01 00:00:00
abstract:BACKGROUND & AIMS:To follow the local tissue delivery of doxorubicin in HCC explants from patients embolized with drug-eluting beads and to compare it with histologic modifications. METHODS:Six patients with HCC underwent chemoembolization with doxorubicin-eluting beads (caliber 100-300 μm, dose 75-150 mg) followed by...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2011.03.024
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND/AIMS:Graft reperfusion in liver transplantation is usually performed by initial portal reperfusion (IPR) and delayed rearterialization. Its influence on graft microcirculation is unknown. This study aimed to assess sinusoidal perfusion in dependence to this reperfusion technique during human living-donor liv...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2004.04.017
更新日期:2004-08-01 00:00:00
abstract::The aim of the present study was to determine the prevalence of hepatocellular carcinoma in adults with heterozygous alpha 1-antitrypsin deficiency and to assess the presence of possible co-risk factors for the development of hepatocellular carcinoma. Two hundred and forty patients with cirrhosis of different aetiolog...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(05)80609-9
更新日期:1994-12-01 00:00:00
abstract::The interaction between fat-storing cells (FSCs) and Kupffer cells (KCs) in vitro has been studied in an attempt to clarify certain aspects of the pathogenesis of fibrotic process in the liver. FSCs and KCs were isolated from the livers of rats either treated with CCl4 for 6 weeks, or with vitamin A for 6 weeks or fro...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(86)80481-0
更新日期:1986-01-01 00:00:00
abstract:BACKGROUND & AIMS:Non-alcoholic fatty liver disease (NAFLD) comprises a spectrum of stages from simple steatosis to non-alcoholic steatohepatitis (NASH). However, disease pathogenesis remains largely unknown. microRNA (miRNA or miR) expression has recently been reported to be altered in human NASH, and modulated by urs...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2012.08.008
更新日期:2013-01-01 00:00:00
abstract:BACKGROUND & AIMS:Virus-specific T cells capable of controlling HBV and eliminating hepatocellular carcinoma (HCC) expressing HBV antigens are deleted or dysfunctional in patients with chronic HBV or HBV-related HCC. The goal of this study was to determine if T cell receptor (TCR) gene transfer can reconstitute HBV-spe...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2010.10.025
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND & AIMS:Hallmarks of non-alcoholic fatty liver disease (NAFLD) are increased triglyceride accumulation within hepatocytes. The prevalence of NAFLD increases steadily with increasing thyrotropin (TSH) levels. However, the underlying mechanisms are largely unknown. Here, we focused on exploring the effect and m...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2014.06.037
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND & AIMS:Liver stiffness (LS) as measured by transient elastography [Fibroscan] offers a novel non-invasive approach to assess liver cirrhosis. Since Fibroscan seems to be unreliable in patients with congestive heart failure, it remains to be determined whether hemodynamic changes affect LS irrespective of fib...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2009.11.018
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND & AIMS:Chronic liver disease is characterized by fibrosis that may progress to cirrhosis. Nucleotide oligomerization domain 2 (Nod2), a member of the Nod-like receptor (NLR) family of intracellular immune receptors, plays an important role in the defense against bacterial infection through binding to the lig...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2014.02.012
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND/AIMS:Intestinal microflora plays an important role in the pathogenesis of neonatal jaundice by inhibiting enterosystemic circulation of bilirubin. The present study aimed to investigate the influence of intestinal microflora on serum bilirubin levels in hyperbilirubinemic Gunn rats. METHODS:After a baseline...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2004.10.012
更新日期:2005-02-01 00:00:00
abstract::The ischemic biliary phenotype of hereditary hemorrhagic telangiectasia (HHT) is rare but distinct, with progressive biliary tree ischemia usually resulting in an irreversible secondary sclerosing cholangiopathy. When clinically severe, liver transplant is often indicated. We report three patients with marked HHT asso...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2013.02.006
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND/AIMS:No information is yet available about the influence of alcohol abuse on the translocation of larger molecules (Mr>1200) through the intestinal mucosa in man. The present study aimed to determine the intestinal permeability to macromolecules in patients with chronic alcohol abuse and mild to more advance...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(00)80242-1
更新日期:2000-05-01 00:00:00
abstract:BACKGROUND & AIMS:Although there is increasing interest in its use, definitive evidence demonstrating a benefit for postmortem normothermic regional perfusion (NRP) in controlled donation after circulatory death (cDCD) liver transplantation is lacking. The aim of this study was to compare results of cDCD liver transpla...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2018.12.013
更新日期:2019-04-01 00:00:00
abstract:BACKGROUND & AIMS:Niemann-Pick C2 (NPC2) is a lysosomal protein involved in the egress of low-density lipoprotein-derived cholesterol from lysosomes to other intracellular compartments. NPC2 has been detected in several tissues and is also secreted from the liver into bile. We have previously shown that NPC2-deficient ...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2015.10.002
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND & AIMS:During chronic HCV infection, T cell dependent virus-specific antibodies are produced. However, the role of B-T cell interaction in chronic HCV is largely unknown. CD4(+)CXCR5(+) T follicular helper (TFH)-cells activate B cells and are important for clearance of various chronic viral infections. We in...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2014.09.024
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND/AIMS:We conducted an analysis of chromosomal numerical aberrations and their clinical significance in hepatocellular carcinoma. METHODS:We analyzed 87 hepatocellular carcinomas by array-based comparative genomic hybridization with an array containing 800 bacterial artificial chromosome clones. RESULTS:Freq...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2005.05.033
更新日期:2005-11-01 00:00:00
abstract:BACKGROUND & AIMS:Liver fibrosis regression but also progression may occur in patients with autoimmune hepatitis (AIH) under treatment. There is a need for non-invasive surrogate markers for fibrosis development in AIH to better guide immunosuppressive treatment. The aims of the study were to assess the impact of compl...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/j.jhep.2017.11.020
更新日期:2018-04-01 00:00:00
abstract:BACKGROUND/AIMS:Previously, trichostatin A (TSA), a histone deacetylase inhibitor, has been shown to exhibit strong antifibrotic characteristics in hepatic stellate cells (HSC), which are known to play a central role in chronic liver diseases. TSA retained a more quiescent phenotype in spite of culture conditions that ...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(02)00275-1
更新日期:2002-12-01 00:00:00
abstract::Three patients with Budd-Chiari syndrome in association with the 'lupus' anticoagulant are described. This anticoagulant was looked for in our patients with an otherwise idiopathic hepatic venous thrombosis because of the presence of a pronounced thrombocytopenia, a prolonged activated partial thromboplastin time or a...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(86)80151-9
更新日期:1986-01-01 00:00:00
abstract::To define the epidemiologic and clinical significance of delta infection in the Naples area, we sought anti-delta antibodies in all cases of HBV-associated liver diseases, hospitalized in our department during 1983 (234 acute hepatitis, 9 of which fulminant; 51 chronic hepatitis; 32 cirrhosis; 19 hepatocarcinomas) and...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(86)80003-4
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