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Non-alcoholic steatosis

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https://www.readbyqxmd.com/read/28335388/a-combination-of-flaxseed-oil-and-astaxanthin-improves-hepatic-lipid-accumulation-and-reduces-oxidative-stress-in-high-fat-diet-fed-rats
#1
Jiqu Xu, Shuang Rong, Hui Gao, Chang Chen, Wei Yang, Qianchun Deng, Qingde Huang, Lingyun Xiao, Fenghong Huang
Hepatic lipid accumulation and oxidative stress are crucial pathophysiological mechanisms for non-alcoholic fatty liver disease (NAFLD). Thus, we examined the effect of a combination of flaxseed oil (FO) and astaxanthin (ASX) on hepatic lipid accumulation and oxidative stress in rats fed a high-fat diet. ASX was dissolved in flaxseed oil (1 g/kg; FO + ASX). Animals were fed diets containing 20% fat, where the source was lard, or 75% lard and 25% FO + ASX, or 50% lard and 50% FO + ASX, or FO + ASX, for 10 weeks...
March 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28333768/management-of-pediatric-non-alcoholic-fatty-liver-disease-by-academic-hepatologists-in-canada-a-nationwide-survey
#2
Marialena Mouzaki, Simon C Ling, Richard A Schreiber, Binita M Kamath
BACKGROUND: The literature on the optimal clinical management of pediatric patients with non-alcoholic fatty liver disease (NAFLD) is limited. The objective of this study was to identify discrepancies in the care provided to patients with NAFLD by hepatologists practicing in academic centers across Canada. METHODS: A nationwide survey was distributed electronically to all pediatric hepatologists practicing in university-affiliated hospitals using the infrastructure of the Canadian Pediatric Hepatology Research Group...
March 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28327588/pharmacological-inhibition-of-adipose-triglyceride-lipase-corrects-high-fat-diet-induced-insulin-resistance-and-hepatosteatosis-in-mice
#3
Martina Schweiger, Matthias Romauch, Renate Schreiber, Gernot F Grabner, Sabrina Hütter, Petra Kotzbeck, Pia Benedikt, Thomas O Eichmann, Sohsuke Yamada, Oskar Knittelfelder, Clemens Diwoky, Carina Doler, Nicole Mayer, Werner De Cecco, Rolf Breinbauer, Robert Zimmermann, Rudolf Zechner
Elevated circulating fatty acids (FAs) contribute to the development of obesity-associated metabolic complications such as insulin resistance (IR) and non-alcoholic fatty liver disease (NAFLD). Hence, reducing adipose tissue lipolysis to diminish the mobilization of FAs and lower their respective plasma concentrations represents a potential treatment strategy to counteract obesity-associated disorders. Here we show that specific inhibition of adipose triglyceride lipase (Atgl) with the chemical inhibitor, Atglistatin, effectively reduces adipose tissue lipolysis, weight gain, IR and NAFLD in mice fed a high-fat diet...
March 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28325277/reverse-expression-of-aging-associated-molecules-through-transfection-of-mirnas-to-aged-mice
#4
Jung-Hee Kim, Bo-Ram Lee, Eun-Sook Choi, Kyeong-Min Lee, Seong-Kyoon Choi, Jung Hoon Cho, Won Bae Jeon, Eunjoo Kim
Molecular changes during aging have been studied to understand the mechanism of aging progress. Herein, changes in microRNA (miRNA) expression in the whole blood of mice were studied to systemically reverse aging and propose them as non-invasive biomarkers. Through next-generation sequencing analysis, we selected 27 differentially expressed miRNAs during aging. The most recognized function involved was liver steatosis, a type of non-alcoholic fatty liver disease (NAFLD). Among 27 miRNAs, six were predicted to be involved in NAFLD, miR-16-5p, miR-17-5p, miR-21a-5p, miR-30c-5p, miR-103-3p, and miR-130a-3p; alterations in their blood and liver levels were confirmed by real-time qPCR...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28323124/cd44-is-a-key-player-in-non-alcoholic-steatohepatitis
#5
Stéphanie Patouraux, Déborah Rousseau, Stéphanie Bonnafous, Cynthia Lebeaupin, Carmelo Luci, Clémence M Canivet, Anne-Sophie Schneck, Adeline Bertola, Marie-Christine Saint-Paul, Antonio Iannelli, Jean Gugenheim, Rodolphe Anty, Albert Tran, Béatrice Bailly-Maitre, Philippe Gual
BACKGROUND: CD44 is expressed on many immune cells that contribute to inflammation. It has been shown, mainly through animal data, that CD44 regulates adipose tissue inflammation in obesity and hepatic leukocyte recruitment in a lithogenic context. However, its role in hepatic inflammation in a mouse model of steatohepatitis and its relevance in humans have not yet been investigated. METHODS: The role of CD44 was evaluated in CD44-/- mice and after injections of an αCD44 antibody in Wild-type mice challenged with a methionine- and choline-deficient diet (MCDD)...
March 16, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28322946/characterizations-and-hepatoprotective-effect-of-polysaccharides-from-mori-fructus-in-rats-with-alcoholic-induced-liver-injury
#6
Xin Zhou, Qingfang Deng, Huaguo Chen, Enming Hu, Chao Zhao, Xiaojian Gong
Crude polysaccharides of Mori Fructus (MFPs) are found to have anti-inflammatory antioxidant, and immuno-enhancing activities. However, the structure of the polysaccharides was ambiguous and its holistic hepatic protection evaluation was defective. This study was conducted to illustrate the characterization of MFPs, and evaluate its hepatoprotective activities. The results found that MFPs contained 67.93±1.18% carbohydrates, 31.03±0.54% uronic acid, and little protein and sulfate. The average molecular weight was ranging from 112...
March 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28319895/impact-of-high-cholesterol-and-endoplasmic-reticulum-stress-on-metabolic-diseases-an-updated-mini-review
#7
REVIEW
Erdi Sozen, Nesrin Kartal Ozer
Endoplasmic reticulum (ER) is the major site of protein folding and calcium storage. Beside the role of ER in protein homeostasis, it controls the cholesterol production and lipid-membrane biosynthesis as well as surviving and cell death signaling mechanisms in the cell. It is well-documented that elevated plasma cholesterol induces adverse effects in cardiovascular diseases (CVDs), liver disorders, such as non-alcoholic fatty liver disease (NAFLD), non-alcoholic steatosis hepatitis (NASH), and metabolic diseases which are associated with oxidative and ER stress...
March 6, 2017: Redox Biology
https://www.readbyqxmd.com/read/28319602/low-hepatic-tissue-copper-in-pediatric-non-alcoholic-fatty-liver-disease
#8
Michael Mendoza, Shelley Caltharp, Ming Song, Lindsay Collin, Juna V Konomi, Craig J McClain, Miriam B Vos
OBJECTIVE: Animal models and studies in adults have demonstrated that copper restriction increases severity of liver injury in non-alcoholic fatty liver disease (NAFLD). This has not been studied in children. We aimed to determine if lower tissue copper is associated with increased NAFLD severity in children. METHODS: This was a retrospective study of pediatric patients who had a liver biopsy including a hepatic copper quantitation. The primary outcome compared hepatic copper concentration in NAFLD versus non-NAFLD...
March 17, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28317281/comparison-of-dietary-polyphenols-for-protection-against-molecular-mechanisms-underlying-non-alcoholic-fatty-liver-disease-in-a-cell-model-of-steatosis
#9
Hossein Rafiei, Kosar Omidian, Brian Bandy
SCOPE: Dietary polyphenols have shown promise in protecting the liver against non-alcoholic fatty liver disease. The relative effectiveness and mechanisms of different polyphenols however is mostly unknown. METHODS AND RESULTS: In a model of steatosis using HepG2 hepatocytes, we evaluated the protective effects of different classes of polyphenols and the contributing mechanisms. Treatment of the cells with oleic acid increased ROS generation and expression of TNFα, decreased expression of UCP2 and decreased mitochondrial content and markers of biogenesis...
March 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28314735/non-alcoholic-fatty-liver-disease-and-its-relationship-with-cardiovascular-disease-and-other-extrahepatic-diseases
#10
REVIEW
Leon A Adams, Quentin M Anstee, Herbert Tilg, Giovanni Targher
Key physiological functions of the liver, including glucose and lipid metabolism, become disturbed in the setting of non-alcoholic fatty liver disease (NAFLD) and may be associated with a systemic inflammatory 'milieu' initiated in part by liver-secreted cytokines and molecules. Consequently, the pathophysiological effects of NAFLD extend beyond the liver with a large body of clinical evidence demonstrating NAFLD to be independently associated with both prevalent and incident cardiovascular disease (CVD), chronic kidney disease (CKD) and type 2 diabetes mellitus (T2DM)...
March 17, 2017: Gut
https://www.readbyqxmd.com/read/28303974/antifibrotic-effect-of-pirfenidone-in-a-mouse-model-of-human-nonalcoholic-steatohepatitis
#11
Chikara Komiya, Miyako Tanaka, Kyoichiro Tsuchiya, Noriko Shimazu, Kentaro Mori, Shunsaku Furuke, Yasutaka Miyachi, Kumiko Shiba, Shinobu Yamaguchi, Kenji Ikeda, Kozue Ochi, Kazuhiko Nakabayashi, Ken-Ichiro Hata, Michiko Itoh, Takayoshi Suganami, Yoshihiro Ogawa
Non-alcoholic steatohepatitis (NASH) is characterized by steatosis with lobular inflammation and hepatocyte injury. Pirfenidone (PFD) is an orally bioavailable pyridone derivative that has been clinically used for the treatment of idiopathic pulmonary fibrosis. However, it remains unknown whether PFD improves liver fibrosis in a mouse model with human NASH-like phenotypes. In this study, we employed melanocortin 4 receptor-deficient (MC4R-KO) mice as a mouse model with human NASH-like phenotypes to elucidate the effect and action mechanisms of PFD on the development of NASH...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303724/non-alcoholic-fatty-liver-disease-nafld-pathogenesis-classification-and-effect-on-drug-metabolizing-enzymes-and-transporters
#12
Enoch Cobbina, Fatemeh Akhlaghi
Non-alcoholic fatty liver disease (NAFLD) is a spectrum of liver disorders. It is defined by the presence of steatosis in more than 5% of hepatocytes with little or no alcohol consumption. Insulin resistance, the metabolic syndrome or type 2 diabetes and genetic variants of PNPLA3 or TM6SF2 seem to play a role in the pathogenesis of NAFLD. The pathological progression of NAFLD follows tentatively a "three-hit" process namely steatosis, lipotoxicity and inflammation. The presence of steatosis, oxidative stress and inflammatory mediators like TNF-α and IL-6 has been implicated in the alterations of nuclear factors such as CAR, PXR, PPAR-α in NAFLD...
March 17, 2017: Drug Metabolism Reviews
https://www.readbyqxmd.com/read/28300221/beneficial-effects-of-paeoniflorin-on-non-alcoholic-fatty-liver-disease-induced-by-high-fat-diet-in-rats
#13
Zhihong Ma, Li Chu, Hongying Liu, Weijie Wang, Jieru Li, Wenzao Yao, Jianfeng Yi, Yue Gao
Non-alcoholic fatty liver disease (NAFLD) is the most prevalent form of chronic liver diseases. This study sought to evaluate the insulin-sensitizing effect of paeoniflorin (PF) on high-fat diet-induced NAFLD and possible molecular mechanisms. Male Sprague Dawley rats were fed a high-fat diet (HFD) for 10 weeks to establish the NAFLD model, and PF (20 mg/kg/d) was gavaged to the NAFLD rats for another four weeks. Our results demonstrated that HFD resulted in hepatocellular ballooning, micro-/macrovesicular steatosis, and oxidative stress in the liver, accompanied by increased serum total cholesterol (TC), triglyceride (TG), free fatty acid (FFA), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) levels and homeostasis model of insulin resistance (HOMA-IR) index...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28300213/effect-of-modulation-of-ppar-%C3%AE-activity-on-kupffer-cells-m1-m2-polarization-in-the-development-of-non-alcoholic-fatty-liver-disease
#14
Wenjing Luo, Qinyu Xu, Qi Wang, Huimin Wu, Jing Hua
Abnormal lipid-mediated hepatic inflammatory-immune dysfunction and chronic low grade inflammation play an important role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD). Macrophage polarization is an important mechanism for the regulation of inflammatory response. Since PPAR-γ has emerged as a master regulator of macrophage polarization, we aimed to investigate the lipid-induced macrophage/Kupffer cell polarization in vivo and in vitro, and explore the association between PPAR-γ activity and macrophages M1/M2 polarization shifting...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28297801/-effect-of-curcumin-on-intestinal-mucosal-mechanical-barrier-in-rats-with-non-alcoholic-fatty-liver-disease
#15
H T Hou, Y M Qiu, H W Zhao, D H Li, Y T Liu, Y Z Wang, S H Su
Objective: To investigate the effect of curcumin on intestinal mucosal mechanical barrier in rats with non-alcoholic fatty liver disease. Methods: A total of 30 male Sprague-Dawley rats were equally divided into normal control group, model group, and curcumin intervention group. The rats in the model group and the curcumin intervention group were given high-fat feed for 16 weeks, and those in the curcumin intervention group were given curcumin 200 mg/kg/day by gavage once a day after 8 weeks of high-fat feeding...
February 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28296249/association-between-non-invasively-diagnosed-hepatic-steatosis-and-chronic-kidney-disease-in-chinese-adults-at-a-health-check-up
#16
Jing Zeng, Chao Sun, Wan-Lu Sun, Guang-Yu Chen, Qin Pan, Shi-Yan Yan, Zheng-Jie Xu, Yuan-Wen Chen, Jian-Gao Fan
OBJECTIVE: To explore the association between the estimated glomerular filtration rate (eGFR) and prevalent chronic kidney disease (CKD) using controlled attenuation parameter (CAP) and fatty liver index (FLI) values in Chinese adults undergoing a health check-up. METHODS: A total of 731 adults without diabetes or significant alcohol consumption who underwent routine health evaluations were included. The eGFR, CAP, FLI and abdominal ultrasonography results were assessed...
March 10, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28294515/clinical-risk-scoring-for-predicting-non-alcoholic-fatty-liver-disease-in-metabolic-syndrome-patients-nafld-ms-score
#17
Surasak Saokaew, Shada Kanchanasuwan, Piyaporn Apisarnthanarak, Aphinya Charoensak, Phunchai Charatcharoenwitthaya, Pochamana Phisalprapa, Nathorn Chaiyakunapruk
BACKGROUND & AIMS: Non-alcoholic fatty liver disease (NAFLD) can progress from simple steatosis to hepatocellular carcinoma. None of tools has been developed specifically for high-risk patients. This study aimed to develop a simple risk scoring to predict NAFLD in patients with metabolic syndrome (MetS). METHODS: A total of 509 patients with MetS were recruited. All were diagnosed by clinicians with ultrasonography-confirmed whether they were patients with NAFLD...
March 12, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28293193/isobaric-tags-for-relative-and-absolute-quantitation-itraq-based-proteomic-analysis-of-hugan-qingzhi-and-its-protective-properties-against-free-fatty-acid-induced-l02-hepatocyte-injury
#18
Fan Xia, Xiaorui Yao, Waijiao Tang, Chunxin Xiao, Miaoting Yang, Benjie Zhou
In previous research, Hugan Qingzhi, a traditional Chinese medicine, was shown to have protective effects against hepatic steatosis. However, its activity against non-alcoholic fatty liver disease (NAFLD) and the mechanisms by which it exerts its effects remain unknown. In the present study, the effects of Hugan Qingzhi on free fatty acid (FFA)-induced L02 cells were examined. The techniques of iTRAQ labeling, together with strong cation exchange-non-liquid chromatography-tandem mass spectrometry (SCX-non-LC-MS/MS) analysis and serum pharmacology, were used to evaluate the effects of Hugan Qingzhi-medicated serum on FFA-induced L02 hepatocyte injury...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28285394/hcv-induced-regulatory-alterations-of-il-1%C3%AE-il-6-tnf-%C3%AE-and-ifn-%C3%AF-operative-leading-liver-en-route-to-non-alcoholic-steatohepatitis
#19
REVIEW
Rabia Nawaz, Sadia Zahid, Muhammad Idrees, Shazia Rafique, Muhammad Shahid, Ammara Ahad, Iram Amin, Iqra Almas, Samia Afzal
Over the course of time, Hepatitis C has become a universal health menace. Its deleterious effects on human liver encompass a lot of physiological, genetic as well as epigenetic alterations. Fatty liver (Hepatic steatosis) is an inflammation having multifactorial ancestries; one of them is HCV (steatohepatitis). HCV boosts several cellular pathways involving up-regulation of a number of cytokines. Current study reviews the regulation of some selective key cytokines during HCV infection, to help generate an improved understanding of their role...
March 11, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28284571/dynamic-mechanical-analysis-to-assess-viscoelasticity-of-liver-tissue-in-a-rat-model-of-nonalcoholic-fatty-liver-disease
#20
Xinyu Zhang, Xuehua Gao, Pengpeng Zhang, Yanrong Guo, Haoming Lin, Xianfen Diao, Yingxia Liu, Changfeng Dong, Yaxin Hu, Siping Chen, Xin Chen
Nonalcoholic fatty liver disease (NAFLD) is the most common liver disorder in both developed and developing countries. A noninvasive method of detecting early stage NAFLD and distinguishing non-alcoholic steatohepatitis (NASH) from simple steatosis (SS) would be useful. The over-accumulation of fat in hepatocytes alters the physical microstructure and chemical contents of the liver tissue. This study included dynamic mechanical analysis (DMA) testing on liver samples from a rat model of NAFLD to determine whether the tissue shows any significant changes in viscoelasticity due to the histological changes...
March 8, 2017: Medical Engineering & Physics
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