Abstract:
BACKGROUND/AIMS:Non-alcoholic fatty liver disease (NAFLD) pathogenesis remains unknown. Due to the emerging role of free cholesterol (FC) in NAFLD, our aim was to examine the correlation between FC accumulation in patients with NAFLD and the expression of enzymes that regulate cholesterol homeostasis. METHODS:Filipin staining, indicative of FC accumulation, and real-time PCR analyses were performed in 31 NAFLD patients and in seven controls. RESULTS:All NASH patients (n=14) and 4 out of 17 patients with steatosis exhibited filipin staining compared to controls (0 out of 7 subjects with normal liver histology and BMI). Sterol regulatory element-binding protein-2 (SREBP-2) mRNA levels were 7- and 3-fold higher in NASH and steatosis patients, respectively, compared to controls. Since hydroxymethylglutaryl-CoA (HMG-CoA) reductase is the key enzyme in cholesterol synthesis and transcriptionally controlled by SREBP-2 we measured its mRNA levels, being 3- to 4-fold higher in NAFLD compared to controls, without any difference between NASH and steatosis patients. Fatty acid synthase (FAS) and SREBP-1c expression were not significantly induced in NAFLD, while ATP-binding cassette sub-family G member 1 (ABCG1), a transporter involved in cholesterol egress, and acyl-CoA-cholesterol acyltransferase mRNA levels were modestly increased (1.5- to 2.5-fold, p<0.05), regardless of fibrosis. Interestingly, mRNA levels of steroidogenic acute regulatory protein (StAR), a mitochondrial-cholesterol transporting polypeptide, increased 7- and 15-fold in steatosis and NASH patients, respectively, compared to controls. CONCLUSIONS:FC increases in NASH and correlates with SREBP-2 induction. Moreover, StAR overexpression in NASH suggests that mitochondrial FC may be a player in disease progression and a novel target for intervention.
journal_name
J Hepatoljournal_title
Journal of hepatologyauthors
Caballero F,Fernández A,De Lacy AM,Fernández-Checa JC,Caballería J,García-Ruiz Cdoi
10.1016/j.jhep.2008.12.016subject
Has Abstractpub_date
2009-04-01 00:00:00pages
789-96issue
4eissn
0168-8278issn
1600-0641pii
S0168-8278(08)00863-5journal_volume
50pub_type
杂志文章abstract:BACKGROUND/AIMS:After liver transplantation for autoimmune hepatitis, the long-term results and the incidence of recurrence of primary disease are unknown. METHODS:In this retrospective study we reviewed the clinical course of 25 patients transplanted for autoimmune hepatitis and followed for a mean of 5.3 years (2-8....
journal_title:Journal of hepatology
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abstract::We report a case of chronic active hepatitis caused by benzarone, a benzofuran derivative used in Europe for the treatment of peripheral venous disorders. Jaundice and serum alanine aminotransferase activity increased while drug administration was continued, but promptly decreased when it was eventually interrupted. L...
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pub_type: 临床试验,杂志文章
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abstract::The aim of the present investigation was to study the number and acinar distribution of apoptotic bodies in normal liver as an approach to a better understanding of cell kinetics in the hepatic parenchyma. The material included 20 normal human needle liver biopsies and 20 normal male Sprague-Dawley rats. For each live...
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更新日期:2013-02-01 00:00:00
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更新日期:1998-01-01 00:00:00
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journal_title:Journal of hepatology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1996-12-01 00:00:00
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更新日期:2002-11-01 00:00:00
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更新日期:1986-01-01 00:00:00
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更新日期:2016-10-01 00:00:00
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journal_title:Journal of hepatology
pub_type: 杂志文章
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更新日期:2012-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0168-8278(94)80099-5
更新日期:1994-10-01 00:00:00
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更新日期:2019-03-01 00:00:00
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更新日期:2001-04-01 00:00:00
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journal_title:Journal of hepatology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2000-08-01 00:00:00
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journal_title:Journal of hepatology
pub_type: 杂志文章
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更新日期:2017-08-01 00:00:00
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journal_title:Journal of hepatology
pub_type: 杂志文章
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更新日期:1995-07-01 00:00:00
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journal_title:Journal of hepatology
pub_type: 杂志文章,meta分析
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更新日期:2010-09-01 00:00:00
abstract::Twenty-two patients with primary biliary cirrhosis were treated with ursodeoxycholic acid, 10 mg/kg per day. Fourteen patients with stages I/II were treated for 4-12 years (mean 7.5), and eight patients with stages III/IV for 5-12 years (mean 6.5). Twelve of 13 patients with early stages became asymptomatic. Aminotran...
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pub_type: 临床试验,杂志文章
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更新日期:1994-10-01 00:00:00
abstract::The etiologic agent responsible for epidemics of enterically-transmitted non-A, non-B hepatitis has been molecularly characterized as the hepatitis E virus (HEV). The cloning of a portion of the Burma strain of HEV (HEV(B); 'Old World' strain) has been described together with the isolation of a contiguous overlapping ...
journal_title:Journal of hepatology
pub_type: 杂志文章
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更新日期:1991-01-01 00:00:00
abstract:BACKGROUND/AIMS:The objective of this study was to validate, with an independent prospective cohort of patients, our previous data indicating that the proliferating cell nuclear antigen-labeling index (PCNA-LI) reflects the liver functional reserve in human cirrhosis and might have prognostic significance for patient s...
journal_title:Journal of hepatology
pub_type: 杂志文章
doi:10.1016/s0168-8278(99)80106-8
更新日期:1999-03-01 00:00:00
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journal_title:Journal of hepatology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jhep.2011.11.022
更新日期:2012-05-01 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