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Nonalcoholic steatohepatitis

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https://www.readbyqxmd.com/read/29222421/the-transcriptomic-signature-of-disease-development-and-progression-of-nonalcoholic-fatty-liver-disease
#1
Sophie Cazanave, Alexei Podtelezhnikov, Kristian Jensen, Mulugeta Seneshaw, Divya P Kumar, Hae-Ki Min, Prasanna K Santhekadur, Bubu Banini, Adolfo Gabriele Mauro, Abdul M Oseini, Robert Vincent, Keith Q Tanis, Andrea L Webber, Liangsu Wang, Pierre Bedossa, Faridoddin Mirshahi, Arun J Sanyal
A longitudinal molecular model of the development and progression of nonalcoholic fatty liver disease (NAFLD) over time is lacking. We have recently validated a high fat/sugar water-induced animal (an isogenic strain of C57BL/6 J:129S1/SvImJ mice) model of NAFLD that closely mimics most aspects of human disease. The hepatic transcriptome of such mice with fatty liver (8 weeks), steatohepatitis with early fibrosis (16-24 weeks) and advanced fibrosis (52 weeks) after initiation of the diet was evaluated and compared to mice on chow diet...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29221950/dha-supplementation-prevent-the-progression-of-nash-via-gpr120-signaling
#2
Kazuo Nakamoto, Koki Shimada, Shinichi Harada, Yasuko Morimoto, Akira Hirasawa, Shogo Tokuyama
Nonalcoholic steatohepatitis (NASH) is one of the most common liver diseases involving chronic accumulation of fat and inflammation, often leading to advanced fibrosis, cirrhosis and carcinoma. However, the pathological mechanism for this is unknown. GPR120/FFAR4 has been recognized as a functional fatty acid receptor and an attractive therapeutic target for metabolic diseases. In this study, we investigated the involvement of GPR120/FFAR4 in the pathogenesis of NASH. Mice fed with a 0.1% methionine and choline deficient high-fat (CDAHF) diet showed a significant increase in plasma aspartate transaminase and alanine transaminase levels, fatty deposition, inflammatory cell infiltration, and mild fibrosis...
December 5, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29220698/synergistic-interaction-of-fatty-acids-and-oxysterols-impairs-mitochondrial-function-and-limits-liver-adaptation-during-nafld-progression
#3
Francesco Bellanti, Rosanna Villani, Rosanna Tamborra, Maria Blonda, Giuseppina Iannelli, Giorgia di Bello, Antonio Facciorusso, Giuseppe Poli, Luigi Iuliano, Carlo Avolio, Gianluigi Vendemiale, Gaetano Serviddio
The complete mechanism accounting for the progression from simple steatosis to steatohepatitis in nonalcoholic fatty liver disease (NAFLD) has not been elucidated. Lipotoxicity refers to cellular injury caused by hepatic free fatty acids (FFAs) and cholesterol accumulation. Excess cholesterol autoxidizes to oxysterols during oxidative stress conditions. We hypothesize that interaction of FAs and cholesterol derivatives may primarily impair mitochondrial function and affect biogenesis adaptation during NAFLD progression...
December 5, 2017: Redox Biology
https://www.readbyqxmd.com/read/29216638/microrna-122-inhibits-lipid-droplet-formation-and-hepatic-triglyceride-accumulation-via-yin-yang-1
#4
Guo-Yi Wu, Chen Rui, Ji-Qiao Chen, Eiketsu Sho, Shan-Shan Zhan, Xian-Wen Yuan, Yi-Tao Ding
BACKGROUND/AIMS: An increase in intracellular lipid droplet formation and hepatic triglyceride (TG) content usually results in nonalcoholic fatty liver disease. However, the mechanisms underlying the regulation of hepatic TG homeostasis remain unclear. METHODS: Oil red O staining and TG measurement were performed to determine the lipid content. miRNA expression was evaluated by quantitative PCR. A luciferase assay was performed to validate the regulation of Yin Yang 1 (YY1) by microRNA (miR)-122...
December 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29215462/liver-transplantation-in-cryptogenic-cirrhosis-outcome-comparisons-between-nash-alcoholic-and-aih-cirrhosis
#5
Paul Joseph Thuluvath, Steven Hanish, Yulia Savva
BACKGROUND: The outcomes of liver transplantation (LT) in patients with cryptogenic cirrhosis (CC) have not been adequately examined except for small case series. We believe that patients currently listed as CC have truly cryptogenic liver disease and may have different post-LT outcomes compared to nonalcoholic steatohepatitis (NASH). METHODS: We compared the post-LT outcomes of adults with CC (n=3241) and compared them with cirrhosis from NASH (n=4089), alcohol (AC, n=7837) and autoimmune hepatitis (AIH, n=1435) using the UNOS database from 2002-16...
December 5, 2017: Transplantation
https://www.readbyqxmd.com/read/29214510/myeloid-deficiency-of-ccn3-exacerbates-liver-injury-in-a-mouse-model-of-nonalcoholic-fatty-liver-disease
#6
Wenconghui Wu, Xingjian Hu, Xianming Zhou, Philip A Klenotic, Qi Zhou, Zhiyong Lin
Non-alcoholic fatty liver disease (NAFLD) is a condition in which fat accumulates in the liver of patients without a prior history of alcohol abuse. The most severe form, nonalcoholic steatohepatitis (NASH), often leads to hepatic fibrosis and cirrhosis with ensuing complications. To date, there is no pharmacologic treatment for NASH. The biological effects of CCN3, specifically its role in the regulation of inflammation, reactive oxygen species production and angiogenesis, have been recently established. Additional data suggests that CCN3 is associated with the development of tumors in the liver yet may be protective of liver fibrogenesis...
December 6, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29203392/role-of-imaging-based-biomarkers-in-nafld-recent-advances-in-clinical-application-and-future-research-directions
#7
REVIEW
Rohit Loomba
Nonalcoholic fatty liver disease (NAFLD) is a major public health problem afflicting approximately 1 billion individuals worldwide. Liver biopsy is considered the gold standard to assess severity of liver disease in patients with NAFLD. However, it is invasive, has high inter-observer variability, and is associated with adverse effects, including pain, infection, and rarely death. It is also impractical due to the large number of individuals who have NAFLD. Therefore, there is a strong need for the non-invasive assessment of disease severity in NAFLD...
December 1, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29202448/cd11c-resident-macrophages-drive-hepatocyte-death-triggered-liver-fibrosis-in-a-murine-model-of-nonalcoholic-steatohepatitis
#8
Michiko Itoh, Takayoshi Suganami, Hideaki Kato, Sayaka Kanai, Ibuki Shirakawa, Takeru Sakai, Toshihiro Goto, Masahiro Asakawa, Isao Hidaka, Hiroshi Sakugawa, Koji Ohnishi, Yoshihiro Komohara, Kenichi Asano, Isao Sakaida, Masato Tanaka, Yoshihiro Ogawa
Although recent evidence has pointed to the role of organ- and pathogenesis-specific macrophage subsets, it is still unclear which subsets are critically involved in the pathogenesis of nonalcoholic steatohepatitis (NASH). Using melanocortin-4 receptor-deficient (MC4R-KO) mice fed Western diet (WD), which exhibit liver phenotypes similar to those of human NASH, we found a histological structure, termed hepatic crown-like structure (hCLS), in which CD11c+ macrophages surround dead/dying hepatocytes, a prominent feature of NASH...
November 16, 2017: JCI Insight
https://www.readbyqxmd.com/read/29201787/probiotic-therapy-in-patients-with-nonalcoholic-steatohepatitis-in-zagazig-university-hospitals
#9
Sameh M Abdel Monem
Aim: Nonalcoholic fatty liver disease (NAFLD) is probably the most common liver disorder in the world. A subgroup of NAFLD patients is characterized by injury to the hepatocytes and inflammation in addition to excessive fat (steatohepatitis), the latter condition is nominated nonalcoholic steatohepatitis (NASH). This work aimed to evaluate the role of probiotics on the outcome of NASH in patients admitted to the Tropical Medicine Department, Faculty of Medicine, Zagazig University (inpatients and outpatients)...
January 2017: Euroasian Journal of Hepato-Gastroenterology
https://www.readbyqxmd.com/read/29201486/gallstone-pancreatitis-a-common-but-often-overlooked-cause-of-abdominal-pain-in-post-liver-transplant-patients
#10
Napatt Kanjanahattakij, Kamolyut Lapumnuaypol, Sanna Fatima, Eyob Feyssa
Introduction: In general population, gallstone pancreatitis is the most common cause of pancreatitis. However, there are very few literatures that address this topic in post-liver-transplant patients. Clinical Case: A 69-year-old female who had a liver transplant in 2015 due to hepatocellular carcinoma and nonalcoholic steatohepatitis (NASH) cirrhosis. She had a recent episode of acute cellular rejection that was treated with high dose methylprednisolone 1 week prior to admission...
2017: Case Reports in Transplantation
https://www.readbyqxmd.com/read/29199584/anti-inflammation-and-lipogenic-inhibition-of-taiwanofungus-salmonea-mycelium-and-grifola-frondosa-fruiting-body
#11
Rao-Chi Chien, Yi-Chi Yang, Eric Icheng Lai, Jeng-Leun Mau
A long-term inflammatory response can cause the development of nonalcoholic steatohepatitis (NASH), which is mainly caused by abnormal metabolism of lipids in the liver. Taiwanofungus salmonea and Grifola frondosa, which are valuable medicinal mushrooms in Taiwan and exhibit many beneficial bioactivities, are used to evaluate effects on immune regulation in Raw 264.7 cells and on NASH-related responses in Hep G2 cells. According to the results, the production of proinflammatory cytokines was effectively decreased, whereas the production of interleukin-10 was increased...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/29190550/green-tea-extract-protects-against-hepatic-nf%C3%AE%C2%BAb-activation-along-the-gut-liver-axis-in-diet-induced-obese-mice-with-nonalcoholic-steatohepatitis-by-reducing-endotoxin-and-tlr4-myd88-signaling
#12
Jinhui Li, Geoffrey Y Sasaki, Priyankar Dey, Chureeporn Chitchumroonchokchai, Allison N Labyk, Joshua D McDonald, Joshua B Kim, Richard S Bruno
Green tea extract (GTE) reduces NFκB-mediated inflammation during nonalcoholic steatohepatitis (NASH). We hypothesized that its anti-inflammatory activities would be mediated in a Toll-like receptor 4 (TLR4)-dependent manner. Wild-type (WT) and loss-of-function TLR4-mutant (TLR4m) mice were fed a high-fat diet containing GTE at 0 or 2% for 8 weeks before assessing NASH, NFκB-mediated inflammation, TLR4 and its adaptor proteins MyD88 and TRIF, circulating endotoxin, and intestinal tight junction protein mRNA expression...
November 3, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29189132/polyphenols-novel-signaling-pathways
#13
Marie-Louise Ricketts, Bradley S Ferguson
BACKGROUND: Cardiovascular disease (CVD) is currently the leading cause of death globally. The metabolic syndrome (MetS), a clustering of risk factors including hypertension, hyperglycemia, elevated low-density lipoprotein (LDL) cholesterol, reduced high-density lipoprotein (HDL) cholesterol and increased visceral adiposity, is a significant risk factor for the development of CVD. Non-alcoholic fatty liver disease (NAFLD), often referred to as the hepatic manifestation of MetS, is a constellation of progressive liver disorders closely linked to obesity, diabetes, and insulin resistance...
November 29, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29187040/parenteral-soybean-oil-induces-hepatosteatosis-despite-addition-of-fish-oil-in-a-mouse-model-of-intestinal-failure-associated-liver-disease
#14
Prathima Nandivada, Gillian L Fell, Amy H Pan, Vania Nose, Paul D Mitchell, Kathleen M Gura, Mark Puder
BACKGROUND: Replacement of parenteral soybean oil (SO) with fish oil (FO) is an effective therapy for intestinal failure-associated liver disease (IFALD) in children. However, practitioners remain concerned about the risk of essential fatty acid deficiency (EFAD) and sometimes treat IFALD with a combination of 50% SO and 50% FO emulsions. The purpose of this study was to determine if mixing 50% SO and 50% FO emulsions would prevent hepatosteatosis in a murine model of parenteral nutrition (PN)-induced hepatosteatosis...
February 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29184904/erratum-resting-and-exercise-energy-metabolism-after-liver-transplantation-for-nonalcoholic-steatohepatitis-erratum
#15
(no author information available yet)
[This corrects the article DOI: 10.1097/TXD.0000000000000701.].
November 2017: Transplantation Direct
https://www.readbyqxmd.com/read/29181663/gene-tnf-polymorphism-308g-a-rs1800629-and-its-relationship-with-the-efficiency-of-ursodeoxycholic-acid-therapy-in-patients-with-nonalcoholic-stetohepatitis
#16
I V Kurbatova, L V Topchieva, O P Dudanova
Association of TNF gene polymorphism -308G>A with the development of nonalcoholic steatohepatitis in the Russian population was revealed. Carriers of allele A of the TNF gene marker -308G>A have significantly higher risk of nonalcoholic steatohepatitis development: OR=1.69 (1.05; 2.71). Allele A carriage by this marker predicts an increase in the basal HDL level and a decrease in LDL and IL-10 levels in the blood of healthy subjects. Patients with nonalcoholic steatohepatitis, differing by the TNF gene -308G>A marker genotype, differ by the time course of the markers of hepatocellular damage (ALT, AST), activity of hepatocyte apoptosis (tissue polypeptide-specific antigen), and activation of specific humoral immunity (γ-globulin) in response to therapy with ursodeoxycholic acid in a dose of 10-15 mg/kg over 4-6 weeks...
November 27, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29179453/microrna-deregulation-in-nonalcoholic-steatohepatitis-associated-liver-carcinogenesis
#17
Aline de Conti, Juliana Festa Ortega, Volodymyr Tryndyak, Kostiantyn Dreval, Fernando Salvador Moreno, Ivan Rusyn, Frederick A Beland, Igor P Pogribny
Hepatocellular carcinoma (HCC) is the fastest-rising cause of cancer-related death in the United States. Recent epidemiological studies have identified nonalcoholic steatohepatitis (NASH), a progressive form of nonalcoholic fatty liver disease (NAFLD), as a major risk factor for HCC. Elucidating the underlying mechanisms associated with the development of NASH-derived HCC is critical for identifying early biomarkers for the progression of the disease and for treatment and prevention. In the present study, using liver samples from C57BL/6J mice submitted to the Stelic Animal Model (STAM) of NASH-associated liver carcinogenesis, we investigated the role of microRNA (miRNA) alterations in the pathogenesis of NASH-derived HCC...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29177105/investigating-molecular-connections-of-non-alcoholic-fatty-liver-disease-with-associated-pathological-conditions-in-west-virginia-for-biomarker-analysis
#18
Dana L Sharma, Hari Vishal Lakhani, Rebecca L Klug, Brian Snoad, Rawan El-Hamdani, Joseph I Shapiro, Komal Sodhi
Non-alcoholic fatty liver disease (NAFLD) is a disease characterized by a steatosis of the liver that may progress to more serious pathological conditions including: nonalcoholic steatohepatitis (NASH), fibrosis, and cirrhosis. As the prevalence of NAFLD has increased worldwide in recent years, pathophysiology and risk factors associated with disease progression of NAFLD are at the focus of many studies. NAFLD is related to and shares common serum biomarkers with cardiovascular disease (CVD), type 2 diabetes mellitus (T2DM), obesity, and metabolic syndrome (MetS)...
October 2017: Journal of Clinical & Cellular Immunology
https://www.readbyqxmd.com/read/29175242/association-of-nonalcoholic-steatohepatitis-with-subclinical-myocardial-dysfunction-in-non-cirrhotic-patients
#19
Yong-Ho Lee, Kwang Joon Kim, Myung Eun Yoo, Gyuri Kim, Hye-Jin Yoon, Kwanhyeong Jo, Jong-Chan Youn, Mijin Yun, Jun Yong Park, Chi Young Shim, Byung-Wan Lee, Seok-Min Kang, Jong-Won Ha, Bong-Soo Cha, Eun Seok Kang
BACKGROUND & AIMS: Non-alcoholic fatty liver disease (NAFLD) is associated with increased cardiovascular risk. Among categories of NAFLD, hepatic fibrosis is most likely to affect mortality. Myocardial function and its energy metabolism are tightly linked, which might be altered by an insulin resistant condition such as NAFLD. We investigated whether hepatic steatosis and fibrosis were associated with myocardial dysfunction relative to myocardial glucose uptake. METHODS: 308 patients (190 without NAFLD, 118 with NAFLD) were studied...
November 23, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29167529/liver-specific-deletion-of-ror%C3%AE-aggravates-diet-induced-nonalcoholic-steatohepatitis-by-inducing-mitochondrial-dysfunction
#20
Hyeon-Ji Kim, Yong-Hyun Han, Hyelin Na, Ju-Yeon Kim, Taewook Kim, Hye-Jin Kim, Chanseok Shin, Jung Weon Lee, Mi-Ock Lee
Mitochondrial dysfunction may play a key role in the progression of steatosis to nonalcoholic steatohepatitis (NASH); however, the molecular mechanism that controls the structure and function of mitochondria in NASH is not clearly understood. Here, we demonstrated that RORα is a regulator of expression of Bnip3 and PGC-1α, and thereby enhances mitochondrial quality. First, we observed that liver-specific RORα knockout mice (RORα-LKO) were more susceptible to high-fat diet-induced NASH compared with control, probably due to mitochondrial dysfunction...
November 22, 2017: Scientific Reports
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