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Liver fibrosis

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https://www.readbyqxmd.com/read/29452268/high-prevalence-of-liver-fibrosis-among-european-adults-with-unknown-liver-disease-a-population-based-study
#1
Llorenç Caballería, Guillem Pera, Ingrid Arteaga, Lluís Rodríguez, Alba Alumà, Rosa Ma Morillas, Napoleón de la Ossa, Alba Díaz, Carmen Expósito, Dolores Miranda, Carmen Sánchez, Rosa Ma Prats, Marta Urquizu, Angels Salgado, Magda Alemany, Alba Martinez, Irfan Majeed, Núria Fabrellas, Isabel Graupera, Ramón Planas, Isabel Ojanguren, Miquel Serra, Pere Torán, Juan Caballería, Pere Ginès
BACKGROUND AND AIMS: Liver fibrosis is the main determinant of long-term outcome in chronic liver diseases. Little is known about prevalence of liver fibrosis in general population. Aim of the study was to investigate the prevalence of liver fibrosis in general adult population with unknown liver disease. METHODS: Population-based, cross-sectional study, performed in Barcelona metropolitan area. Subjects aged 18-75yr were identified randomly from citizens included in primary health care registry...
February 13, 2018: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29452086/ameliorative-effects-of-clonidine-on-ethanol-induced-kidney-injury-in-rats-potential-role-for-imidazoline-1-receptor
#2
Nesreen M I M Elkomy, Islam A A E-H Ibrahim, Shimaa M Elshazly, Hassan M El-Fayoumi
Chronic alcoholism is a risk factor for kidney injury. Clonidine is an α 2 -adrenergic receptor/imidazoline-1 receptor agonist that can reduce blood pressure and maintain renal functions. This study aims to investigate the possible ameliorative effects of clonidine on ethanol induced kidney injury and its mechanism of action. Kidney injury was induced in rats by adding ethanol to drinking water for eight weeks. Clonidine effects on kidney functions and histopathology were measured. Moreover, phentolamine (α-adrenergic receptor antagonist), efaroxan (imidazoline-1 receptor antagonist) and rilmenidine (imidazoline-1 receptor agonist) were used to clarify the role of imidazoline-1 receptor in mediating renal ameliorative effects...
February 13, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29451178/involvement-of-epithelial-mesenchymal-transition-in-liver-fibrosis
#3
REVIEW
Kangkang Yu, Qian Li, Guangfeng Shi, Ning Li
Fibrosis of the liver is an inherent wound healing response to chronic liver injury. Regeneration of liver epithelium and restoration of normal liver structure were generally involved in this process. Although the liver has a striking capacity to adapt to damage through tissue repair, excessive accumulation of extracellular matrix during this process often leads to scar tissue formation and subsequent fibrosis. Epithelial to mesenchymal transition (EMT) enables a polarized epithelial cell to undergo multiple changes biochemically and to bear a mesenchymal cell phenotype...
January 2018: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/29450869/long-term-observation-of-acute-onset-autoimmune-hepatitis-presenting-clinically-and-radiologically-as-acute-hepatitis
#4
Keiichi Fujiwara, Yoshihiro Fukuda, Katsushi Seza, Masaya Saito, Shin Yasui, Masayuki Nakano, Osamu Yokosuka, Naoya Kato
BACKGROUND: There is yet no gold standard for the diagnosis of acute-onset autoimmune hepatitis (A-AIH), especially histologically acute AIH. As a result, long-term observation of A-AIH has been difficult and the nature is not well known. We retrospectively analyzed the clinicopathological features of A-AIH over a long prospective follow-up period. METHODS: Clinical, biochemical, immunological and pathological features of 30 patients (21 female, mean age 55.1 ± 13...
February 15, 2018: Hepatology International
https://www.readbyqxmd.com/read/29448843/cenicriviroc-for-the-treatment-of-non-alcoholic-steatohepatitis-and-liver-fibrosis
#5
Frank Tacke
Nonalcoholic fatty liver disease (NAFLD) has an increasing prevalence worldwide. At present, no specific pharmacotherapy is approved for NAFLD. Simple steatosis and nonalcoholic steatohepatitis (NASH) can progress to liver fibrosis that is associated with mortality in NAFLD. The recruitment of inflammatory monocytes and macrophages via chemokine receptor CCR2 as well as of lymphocytes and hepatic stellate cells via CCR5 promote the progression of NASH to fibrosis. Areas covered: I summarize preclinical and clinical data on the efficacy and safety of the dual CCR2/CCR5 inhibitor cenicriviroc (CVC, also TBR-652 or TAK-652) for the treatment of NASH and fibrosis...
February 16, 2018: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29448021/risk-assessment-of-silica-nanoparticles-on-liver-injury-in-metabolic-syndrome-mice-induced-by-fructose
#6
Jianmei Li, Xiwei He, Yang Yang, Mei Li, Chenke Xu, Rong Yu
This study aims to assess the effects and the mechanisms of silica nanoparticles (SiNPs) on hepatotoxicity in both normal and metabolic syndrome mouse models induced by fructose. Here, we found that SiNPs exposure lead to improved insulin resistance in metabolic syndrome mice, but markedly worsened hepatic ballooning, inflammation infiltration, and fibrosis. Moreover, SiNPs exposure aggravated liver injury in metabolic syndrome mice by causing serious DNA damage. Following SiNPs exposure, liver superoxide dismutase and catalase activities in metabolic syndrome mice were stimulated, which is accompanied by significantly increased malondialdehyde and 8-hydroxy-2-deoxyguanosine levels as compared to normal mice...
February 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29446106/impact-of-controlled-attenuation-parameter-on-detecting-fibrosis-using-liver-stiffness-measurement
#7
T Karlas, D Petroff, M Sasso, J-G Fan, Y-Q Mi, V de Lédinghen, M Kumar, M Lupsor-Platon, K-H Han, A C Cardoso, G Ferraioli, W-K Chan, V W-S Wong, R P Myers, K Chayama, M Friedrich-Rust, M Beaugrand, F Shen, J-B Hiriart, S K Sarin, R Badea, H W Lee, P Marcellin, C Filice, S Mahadeva, G L-H Wong, P Crotty, K Masaki, J Bojunga, P Bedossa, V Keim, J Wiegand
BACKGROUND: Liver fibrosis is often accompanied by steatosis, particularly in patients with non-alcoholic fatty liver disease (NAFLD), and its non-invasive characterisation is of utmost importance. Vibration-controlled transient elastography is the non-invasive method of choice; however, recent research suggests that steatosis may influence its diagnostic performance. Controlled Attenuation Parameter (CAP) added to transient elastography enables simultaneous assessment of steatosis and fibrosis...
February 15, 2018: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29445243/quantitative-assessment-of-liver-fibrosis-qfibrosis-reveals-precise-outcomes-in-ishak-stable-patients-on-anti-hbv-therapy
#8
Yameng Sun, Jialing Zhou, Xiaoning Wu, Yongpeng Chen, Hongxin Piao, Lungen Lu, Huiguo Ding, Yuemin Nan, Wei Jiang, Tailing Wang, Hui Liu, Xiaojuan Ou, Aileen Wee, Neil D Theise, Jidong Jia, Hong You
Current widely used semiquantitative histological assessment methods are insensitive to identify subtle changes of liver fibrosis. Therefore, to precisely assess therapeutic efficacy on chronic hepatitis B (CHB), we explored the utility of qFibrosis (a fully-quantitative morphometric method employing second harmonic generation/two photon excitation fluorescence) in liver fibrosis evaluation. Fibrosis changes were evaluated by Ishak fibrosis scoring and qFibrosis in CHB patients with paired liver biopsies before and after 78 weeks' antiviral therapy...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29444470/effect-of-sirolimus-on-liver-cirrhosis-and-hepatic-encephalopathy-of-common-bile-duct-ligated-rats
#9
Kuo-Cheng Wu, Hui-Chun Huang, Ting Chang, Wen-Shin Lee, Chiao-Lin Chuang, I-Fang Hsin, Shao-Jung Hsu, Fa-Yauh Lee, Ching-Chih Chang, Shou-Dong Lee
Cirrhosis is often associated with portal hypertension and portal-systemic collateral vessels formation attributed to angiogenesis, which leads to severe complications as hepatic encephalopathy. Sirolimus has anti-fibrosis and anti-angiogenesis effects, but whether it influences the severity of portal-systemic collaterals and hepatic encephalopathy is unknown. This study was thus designed to address this issue in rats with common bile duct ligation-induced liver cirrhosis. Sham-operated rats were surgical controls...
February 11, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29444417/a-study-on-the-regenerative-effect-of-platelets-rich-plasma-on-experimentally-induced-hepatic-damage-in-albino-rats
#10
Heba Mamdoh Shoeib, Walaa Arafa Keshk, Abdallah Mahmoud Foda, Saad El-Deen Abd Elfatah Abo El Noeman
Hepatic fibrosis is a worldwide health problem with significant morbidity and mortality. Currently, there is no effective therapy for hepatic fibrosis. So that the present study was aimed to evaluate the possible regenerative effect of Platelet-rich plasma (PRP) against thioacetamide (TAA) induced hepatic damage. Eighty albino rats were included; 40 were used for PRP preparation and 40 were randomly divided into four groups. Group I (control group); group II (PRP control); group III (TAA- intoxicated in a dose of 200 mg ∕ kg body weight/twice weekly for 7 weeks, intra-peritoneal and group IV (TAA-intoxicated+ PRP treated)...
February 14, 2018: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/29444136/ly2405319-an-analog-of-fibroblast-growth-factor-21-ameliorates-%C3%AE-smooth-muscle-actin-production-through-inhibition-of-the-succinate-g-protein-couple-receptor-91-gpr91-pathway-in-mice
#11
Cong Thuc Le, Giang Nguyen, So Young Park, Dae Hee Choi, Eun-Hee Cho
Fibroblast growth factor 21 (FGF21) is an important metabolic regulator expressed predominantly in the liver. In this study, we evaluated the role of LY2405319, an analogue of FGF21, in hepatic stellate cell (HSC) activation and in a methionine and choline-deficient (MCD)-diet induced mouse model of liver fibrosis. During liver injury, HSCs trans-differentiate into activated myofibroblasts which produce alpha-smooth muscle actin (α-SMA) and become a major cell type in hepatic fibrogenesis. Succinate and succinate receptor (GPR91) signaling has emerged as a regulator to promote α-SMA production in MCD diet- induced mice...
2018: PloS One
https://www.readbyqxmd.com/read/29443746/platelet-count-to-spleen-thickness-ratio-is-related-to-histologic-severity-of-primary-biliary-cholangitis
#12
Zhongfeng Wang, Xu Liu, Hongqin Xu, Limei Qu, Dezhi Zhang, Pujun Gao
The aim of this study was to evaluate the ability of noninvasive markers to identify the histological severity of primary biliary cholangitis (PBC).Fifty-eight treatment-naïve PBC patients who had undergone liver biopsy were enrolled in our study. The patients' histological stages were based on the classifications of Ludwig and Scheuer. Aspartate aminotransferase-to-platelet ratio index (APRI), fibrosis index based on the 4 factors (FIB-4), red blood cell distribution width to platelet ratio (RPR), and platelet count to spleen thickness (PC/ST) ratio were calculated...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29443066/constitutive-and-inducible-systems-for-genetic-in-vivo-modification-of-mouse-hepatocytes-using-hydrodynamic-tail-vein-injection
#13
Eric K Hubner, Christian Lechler, Thomas N Rösner, Birgit Kohnke-Ertel, Roland M Schmid, Ursula Ehmer
In research models of liver cancer, regeneration, inflammation, and fibrosis, flexible systems for in vivo gene expression and silencing are highly useful. Hydrodynamic tail vein injection of transposon-based constructs is an efficient method for genetic manipulation of hepatocytes in adult mice. In addition to constitutive transgene expression, this system can be used for more advanced applications, such as shRNA-mediated gene knock-down, implication of the CRISPR/Cas9 system to induce gene mutations, or inducible systems...
February 2, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29442052/liver-blood-microdialysate-and-plasma-pharmacokinetics-of-matrine-following-transdermal-or-intravenous-administration
#14
Zhan Tang, Qiao Wang, Zhifen He, Lina Yin, Yawen Zhang, Shenghao Wang
Matrine is contained in several herbs used in traditional Chinese medicine, named Sophora alopecuroides, Sophora flavescens or Sophora subprostrata. In vitro and in vivo studies have focused on the treatment of chronic hepatitis or liver fibrosis using matrine. However, little is known about its liver pharmacokinetic profile. In this study pharmacokinetics of matrine in rat organs and tissues, such as liver, blood and skin were studied after intravenous (40 mg/kg) or transdermal administration (6 mg/cm2, 5 cm2)...
March 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29441888/anti-fibrotic-potential-of-a-matthiola-arabica-isothiocyanates-rich-fraction-impact-on-oxidative-stress-inflammatory-and-fibrosis-markers
#15
E D Mohammed, R N El-Naga, R A Lotfy, A A Al-Gendy, E El-Demerdash
The present study is the first one to investigate the glucosinolates (GLS) profile and anti-fibrotic effect of isothiocyanates (ITCs) rich fraction of Matthiola arabica (Brassicaceae) using an experimental model of liver fibrosis in rats. Five GLS (ethyl glucosinolate, gluconapin, glucodehydroerucin, glucoerucin and glucoraphanin) were identified by gas liquid chromatography-mass spectrometric (GLC-MS) analysis of their hydrolysis products, produced by the natural autolysis and exogenous myrosinase hydrolysis using one and two units of the enzyme...
October 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29441440/%C3%AE-%C3%AE-t-cells-in-liver-diseases
#16
REVIEW
Xuefu Wang, Zhigang Tian
γδ T cells display unique developmental, distributional, and functional patterns and can rapidly respond to various insults and contribute to diverse diseases. Different subtypes of γδ T cells are produced in the thymus prior to their migration to peripheral tissues. γδ T cells are enriched in the liver and exhibit liver-specific features. Accumulating evidence reveals that γδ T cells play important roles in liver infection, non-alcoholic fatty liver disease, autoimmune hepatitis, liver fibrosis and cirrhosis, and liver cancer and regeneration...
February 14, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29440620/quantification-of-hepatic-perfusion-and-hepatocyte-function-with-dynamic-gadoxetic-acid-enhanced-mr-imaging-in-patients-with-chronic-liver-disease
#17
Benjamin Leporq, Jean-Luc Daire, Catherine M Pastor, Pierre Deltenre, Christine Sempoux, Sabine Schmidt, Bernard E Van Beers
The purpose of this study was to develop and perform initial validation of dynamic MR imaging enhanced with gadoxetic acid as hepatobiliary contrast agent to quantify hepatic perfusion and hepatocyte function in patients with chronic liver disease. Free-breathing, dynamic gadoxetic acid-enhanced MR imaging was performed at 3.0 T using a three-dimensional time-resolved angiography sequence with stochastic trajectories during 38 minutes. A dual-input three-compartment model was developed to derive hepatic perfusion and hepatocyte function parameters...
February 12, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29438711/detection-of-substrate-binding-of-a-collagen-specific-molecular-chaperone-hsp47-in-solution-using-fluorescence-correlation-spectroscopy
#18
Akira Kitamura, Yoshihito Ishida, Hiroshi Kubota, Chan-Gi Pack, Takayuki Homma, Shinya Ito, Kazutaka Araki, Masataka Kinjo, Kazuhiro Nagata
Heat shock protein 47 kDa (HSP47), an ER-resident and collagen-specific molecular chaperone, recognizes collagenous hydrophobic amino acid sequences (Gly-Pro-Hyp) and assists in secretion of correctly folded collagen. Elevated collagen production is correlated with HSP47 expression in various diseases, including fibrosis and keloid. HSP47 knockdown ameliorates liver fibrosis by inhibiting collagen secretion, and inhibition of the interaction of HSP47 with procollagen also prevents collagen secretion. Therefore, a high-throughput system for screening of drugs capable of inhibiting the interaction between HSP47 and collagen would aid the development of novel therapies for fibrotic diseases...
February 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29438418/bile-acid-detoxifying-enzymes-limit-susceptibility-to-liver-fibrosis-in-female-shrsp5-dmcr-rats-fed-with-a-high-fat-cholesterol-diet
#19
Husna Yetti, Hisao Naito, Yuan Yuan, Xiaofang Jia, Yumi Hayashi, Hazuki Tamada, Kazuya Kitamori, Katsumi Ikeda, Yukio Yamori, Tamie Nakajima
During middle age, women are less susceptible to nonalcoholic steatohepatitis (NASH) than men. Thus, we investigated the underlying molecular mechanisms behind these sexual differences using an established rat model of NASH. Mature female and male stroke-prone spontaneously hypertensive 5/Dmcr rats were fed control or high-fat-cholesterol (HFC) diets for 2, 8, and 14 weeks. Although HFC-induced hepatic fibrosis was markedly less severe in females than in males, only minor gender differences were observed in expression levels of cytochrome P450 enzymes (CYP)7A1, CYP8B1 CYP27A1, and CYP7B1, and multidrug resistance-associated protein 3, and bile salt export pump, which are involved in fibrosis-related bile acid (BA) kinetics...
2018: PloS One
https://www.readbyqxmd.com/read/29438197/elevated-liver-stiffness-is-linked-to-increased-biomarkers-of-inflammation-and-immune-activation-in-hiv-hcv-coinfected-patients
#20
Luz Maria Medrano, Pilar Garcia-Broncano, Juan Berenguer, Juan González-García, Ma Ángeles Jiménez-Sousa, Josep M Guardiola, Manuel Crespo, Carmen Quereda, José Sanz, Isabel Canorea, Ana Carrero, Victor Hontañón, Ma Ángeles Muñoz-Fernández, Salvador Resino
OBJECTIVES: Immune dysregulation is a hallmark of HIV and HCV infections. To evaluate the relationship between liver stiffness measure (LSM) and biomarkers of T cell activation, bacterial translocation, inflammation, endothelial dysfunction, and coagulopathy in HIV/HCV-coinfected patients. DESIGN: Cross-sectional study. METHODS: We studied 238 HIV/HCV-coinfected patients, 32 healthy controls and 39 HIV-monoinfected patients. Patients were stratified according to LSM into four groups: <12...
February 12, 2018: AIDS
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