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Non-alcoholic steatosis

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https://www.readbyqxmd.com/read/28645738/human-germline-hedgehog-pathway-mutations-predispose-to-fatty-liver
#1
Maria J Guillen Sacoto, Ariel F Martinez, Yu Abe, Paul Kruszka, Karin Weiss, Joshua L Everson, Ramon Bataller, David E Kleiner, Jerrold M Ward, Kathleen K Sulik, Robert J Lipinski, Benjamin D Solomon, Maximilian Muenke
BACKGROUND & AIMS: Non-alcoholic fatty liver disease (NAFLD) is the most common form of liver disease. Activation of hedgehog (Hh) signaling has been implicated in the progression of NAFLD and proposed as a therapeutic target; however, the effects of Hh signaling inhibition have not been studied in humans with germline mutations affecting this pathway. METHODS: Patients with holoprosencephaly (HPE), a disorder associated with germline mutations disrupting Sonic hedgehog (SHH) signaling, were clinically evaluated for NAFLD...
June 20, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28643888/combination-of-citrus-polymethoxyflavones-green-tea-polyphenols-and-lychee-extracts-suppresses-obesity-and-hepatic-steatosis-in-high-fat-diet-induced-obese-mice
#2
Min-Hsiung Pan, Guliang Yang, Shiming Li, Ming-Yi Li, Mei-Ling Tsai, Jia-Ching Wu, Vladimir Badmaev, Chi-Tang Ho, Ching-Shu Lai
SCOPE: SlimTrym(®) is a formulated product composed of citrus polymethoxyflavones (PMFs), green tea extract and lychee extract. We investigated the effect of dietary SlimTrym(®) on diet-induced obesity and associated non-alcoholic fatty liver disease (NAFLD) in mice. METHODS AND RESULTS: Male C57BL/6 mice were fed a normal diet (ND), high fat diet (HFD) or HFD containing 0.1% or 0.5% SlimTrym(®) for sixteen weeks. Dietary SlimTrym(®) significantly reduced weight gain and relative perigonadal, retroperitoneal, mesenteric fat weight as well as the size of adipocyte in HFD-fed mice...
June 23, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28637594/association-of-plasma-dipeptidyl-peptidase-4-activity-with-non-alcoholic-fatty-liver-disease-in-nondiabetic-chinese-population
#3
Tianpeng Zheng, Bo Chen, Liuxue Yang, Xueping Hu, Xiaoxi Zhang, Hongbo Liu, Linyuan Qin
OBJECTIVE: The pathogenesis of non-alcoholic fatty liver disease (NAFLD) is attributed to a "multi-hits hypothesis" involving insulin resistance, oxidative stress and inflammation. Dipeptidyl peptidase-4 (DPP4) was identified as a novel adipokine capable of enhancing the"multi-hits". Hence, we investigated the association between plasma DPP4 activity and NAFLD in nondiabetic Chinese population. DESIGN AND METHODS: We performed a cross-sectional study using data from 1105 subjects (36-79years) in Guilin between 2015 and 2016...
April 27, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28637520/citrulline-decreases-hepatic-endotoxin-induced-injury-in-fructose-induced-non-alcoholic-liver-disease-an-ex-vivo-study-in-the-isolated-perfused-rat-liver
#4
Wassila Ouelaa, Prasanthi Jegatheesan, Japhète M'bouyou-Boungou, Christelle Vicente, Samir Nakib, Esther Nubret, Jean-Pascal De Bandt
Steatosis can sensitise the liver to various challenges and favour the development of non-alcoholic fatty liver disease (NAFLD). In this context, fructose feeding promotes endotoxin translocation from the gut, contributing to disease progression via an inflammatory process. Citrulline is protective against fructose-induced NAFLD; we hypothesised that this property might be related to its anti-inflammatory and antioxidative action against endotoxin-induced hepatic injuries. This hypothesis was evaluated in a model of perfused liver isolated from NAFLD rats...
June 22, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28637101/-cardiovascular-risk-in-patients-with-non-alcoholic-fatty-liver-disease
#5
REVIEW
Hak Soo Kim, Yong Kyun Cho
Non-alcoholic fatty liver disease (NAFLD) includes a wide spectrum of diseases that range from simple steatosis to non-alcoholic steatohepatitis (NASH) and cirrhosis. In addition, the burden of NAFLD is rapidly growing. Previously, NAFLD was regarded as a hepatic manifestation of metabolic syndrome, which is a traditional cardiovascular disease (CVD) risk factor. However, there has been an increasing evidence that suggest NAFLD to be an independent risk factor of CVD. Therefore, currently, NAFLD should be reconsidered as not only a simple manifestation of metabolic syndrome, but also a systemic disease that contribute to CVD...
June 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28635324/gliptins-suppress-inflammatory-macrophage-activation-to-mitigate-inflammation-fibrosis-oxidative-stress-and-vascular-dysfunction-in-models-of-non-alcoholic-steatohepatitis-and-liver-fibrosis
#6
Xiaoyu Wang, Michael Hausding, Shih-Yen Weng, Yong Ook Kim, Sebastian Steven, Thomas Klein, Andreas Daiber, Detlef Schuppan
AIMS: Non-alcoholic steatohepatitis (NASH) is characterized by steatosis, panlobular inflammation, liver fibrosis and increased cardiovascular mortality. Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are indirect glucagon like peptide 1 (GLP-1) agonists with antidiabetic and anti-inflammatory activity, used for the treatment of type 2 diabetes. Their potential and underlying mechanisms to treat metabolic liver inflammation and fibrosis as well as the associated vascular dysfunction remain to be explored...
June 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28632778/over-expressing-the-soluble-gp130-fc-does-not-ameliorate-methionine-and-choline-deficient-diet-induced-non-alcoholic-steatohepatitis-in-mice
#7
Helene L Kammoun, Tamara Louise Allen, Darren Colin Henstridge, Michael James Kraakman, Lone Peijs, Stefan Rose-John, Mark Anthony Febbraio
Non-alcoholic steatohepatitis (NASH) is a liver disease with the potential to lead to cirrhosis and hepatocellular carcinoma. Interleukin-6 (IL-6) has been implicated in the pathogenesis of NASH, with the so-called IL-6 'trans-signaling' cascade being responsible for the pro-inflammatory actions of this cytokine. We aimed to block IL-6 'trans-signaling', using a transgenic mouse that overexpresses human soluble glycoprotein130 (sgp130Fc Tg mice) fed a commonly used dietary model of inducing NASH (methionine and choline deficient-diet; MCD diet) and hypothesized that markers of NASH would be ameliorated in such mice...
2017: PloS One
https://www.readbyqxmd.com/read/28628674/hepatic-microvascular-dysfunction-and-increased-advanced-glycation-end-products-are-components-of-non-alcoholic-fatty-liver-disease
#8
Evelyn Nunes Goulart da Silva Pereira, Raquel Rangel Silvares, Edgar Eduardo Ilaquita Flores, Karine Lino Rodrigues, Isalira Peroba Ramos, Igor José da Silva, Marcelo Pelajo Machado, Rosiane Aparecida Miranda, Carmen Cabanelas Pazos-Moura, Cassiano F Gonçalves-de-Albuquerque, Hugo Caire de Castro Faria-Neto, Eduardo Tibiriça, Anissa Daliry
BACKGROUND: This study aimed to investigate the pathophysiology of hepatic microcirculatory dysfunction in non-alcoholic fatty liver disease (NAFLD). METHODS: In Wistar rats, NAFLD model was induced by 20 weeks of high-fat diet (HFD) feeding. Rolling and adhesion of leukocytes and tissue perfusion in hepatic microcirculation were examined using in vivo microscopic and laser speckle contrast imaging (LSCI), respectively. Oxidative stress and inflamatory parameters were analysed by TBARs, catalase enzyme activity, RT-PCR and ELISA...
2017: PloS One
https://www.readbyqxmd.com/read/28626963/exercise-training-modulates-the-hepatic-renin-angiotensin-system-in-fructose-fed-rats
#9
Eliete Dalla Corte Frantz, Renata Frauches Medeiros, Isabele Gomes Giori, Juliana Bittencourt Silveira Lima, Thais Bento-Bernardes, Thaiane Gadioli Gaique, Caroline Fernandes-Santos, Tiago Fernandes, Edilamar Menezes Oliveira, Carla Paulo Vieira, Carlos Adam Conte-Junior, Karen Jesus Oliveira, Antonio Claudio Lucas da Nóbrega
The renin-angiotensin system (RAS) has been implicated in the development of metabolic syndrome. We investigated whether the hepatic RAS is modulated by exercise training and if this modulation improves the deleterious effects of fructose overload in rats. Male Wistar rats were divided into (n = 8 each) control (CT), exercise control (CT-Ex), high fructose (HFr) and exercise high fructose (HFr-Ex) groups. Fructose-drinking rats received D-fructose (100 g L(-1) ). After two weeks, CT-Ex and HFr-Ex rats were assigned to a treadmill training protocol at moderate-intensity for eight weeks (60 min day(-1) , four days/week)...
June 19, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28623272/exosomes-derived-from-palmitic-acid-treated-hepatocytes-induce-fibrotic-activation-of-hepatic-stellate-cells
#10
Young-Sun Lee, So Yeon Kim, Eunjung Ko, Jun-Hee Lee, Hyon-Seung Yi, Yang Jae Yoo, Jihye Je, Sang Jun Suh, Young Kul Jung, Ji Hoon Kim, Yeon Seok Seo, Hyung Joon Yim, Won-Il Jeong, Jong Eun Yeon, Soon Ho Um, Kwan Soo Byun
Non-alcoholic fatty liver disease (NAFLD) is a dominant cause of chronic liver disease, but the exact mechanism of progression from simple steatosis to nonalcoholic steatohepatitis (NASH) remains unknown. Here, we investigated the role of exosomes in NAFLD progression. Exosomes were isolated from a human hepatoma cell line treated with palmitic acid (PA) and their miRNA profiles examined by microarray. The human hepatic stellate cell (HSC) line (LX-2) was then treated with exosome isolated from hepatocytes...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28612750/genetic-and-epigenetic-profile-of-patients-with-alcoholic-liver-disease
#11
Luigi Boccuto, Ludovico Abenavoli
Alcoholic liver disease (ALD) is a definition encompassing a spectrum of disorders ranging from simple steatosis to cirrhosis and hepatocellular carcinoma. Excessive alcohol consumption triggers a series of metabolic reactions that affect the liver by inducing lipogenesis, increasing oxidative stress, and causing abnormal inflammatory responses. The metabolic pathways regulating lipids, reactive oxygen species (ROS), and immune system are closely related and in some cases cross-regulate each other. Therefore, it must be taken into account that major genetic and epigenetic abnormalities affecting enzymes involved in one of such pathways can play a pivotal role in ALD pathogenesis...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28612550/-serum-wnt5a-and-its-associations-with-liver-steatosis-and-fibrosis-in-overweight-and-obese-people
#12
Li-Bo Liang, Xia Wang, He He, Yun Gao, Dan Jia, Zhen-Mei An, Shuang-Qing Li
OBJECTIVES: To determine serum Wnt5a and its associations with liver steatosis and fibrosis in overweight and obese people. METHODS: The study participants were recruited from those who visited our hospital for health examinations. They were divided into three groups according to body mass index (BMI), controlled attenuation parameter (CAP)values and elasticity (E) values of liver fibroscan: Control ( n=27), Mild NAFLD (non-alcoholic fatty liver disease, n=51) and Moderate/severe NAFLD ( n=56)...
January 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28612285/non-alcoholic-fatty-liver-disease-in-women-with-polycystic-ovary-syndrome-systematic-review-and-meta-analysis
#13
REVIEW
A L L Rocha, L C Faria, T C M Guimarães, G V Moreira, A L Cândido, C A Couto, F M Reis
PURPOSE: Non-alcoholic fatty liver disease (NAFLD) is an insidious pathologic condition that can manifest from simple steatosis to steatohepatitis (NASH) with potential progression to cirrhosis. Like the polycystic ovary syndrome (PCOS), NAFLD is associated with obesity, diabetes mellitus, insulin resistance and metabolic syndrome. PCOS women have an increased risk of NAFLD, but it is debatable which features of PCOS, either specific (androgen excess) or unspecific (metabolic derangements) affect the NAFLD risk...
June 13, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28611274/meta-analysis-of-randomized-controlled-trials-of-pharmacologic-agents-in-non-alcoholic-steatohepatitis
#14
Adnan Said, Ahmed Akhter
BACKGROUND: Currently, there is no standardized treatment regimen for non-alcoholic steatohepatitis. AIM: We performed a metaanalysis of high quality randomized controlled trials that evaluated treatment response to metformin, thiazolidinediones (TZDs), and vitamin E in adult patients with non-alcoholic steatohepatitis. Outcome measures were improvement in liver histology, biochemical, and anthropometric measures. MATERIAL AND METHODS: Nine trials met inclusion criteria (3 with TZD, 3 with Metformin, 2 with Vitamin E and 1 with both TZD and Vitamin E...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28608850/cellular-senescence-drives-age-dependent-hepatic-steatosis
#15
Mikolaj Ogrodnik, Satomi Miwa, Tamar Tchkonia, Dina Tiniakos, Caroline L Wilson, Albert Lahat, Christoper P Day, Alastair Burt, Allyson Palmer, Quentin M Anstee, Sushma Nagaraja Grellscheid, Jan H J Hoeijmakers, Sander Barnhoorn, Derek A Mann, Thomas G Bird, Wilbert P Vermeij, James L Kirkland, João F Passos, Thomas von Zglinicki, Diana Jurk
The incidence of non-alcoholic fatty liver disease (NAFLD) increases with age. Cellular senescence refers to a state of irreversible cell-cycle arrest combined with the secretion of proinflammatory cytokines and mitochondrial dysfunction. Senescent cells contribute to age-related tissue degeneration. Here we show that the accumulation of senescent cells promotes hepatic fat accumulation and steatosis. We report a close correlation between hepatic fat accumulation and markers of hepatocyte senescence. The elimination of senescent cells by suicide gene-meditated ablation of p16(Ink4a)-expressing senescent cells in INK-ATTAC mice or by treatment with a combination of the senolytic drugs dasatinib and quercetin (D+Q) reduces overall hepatic steatosis...
June 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28594920/genetic-polymorphisms-associated-with-fatty-liver-disease-and-fibrosis-in-hiv-positive-patients-receiving-combined-antiretroviral-therapy-cart
#16
Leona Dold, Carolin Luda, Carolynne Schwarze-Zander, Christoph Boesecke, Cordula Hansel, Hans-Dieter Nischalke, Philipp Lutz, Raphael Mohr, Jan-Christian Wasmuth, Christian P Strassburg, Jonel Trebicka, Jürgen Kurt Rockstroh, Ulrich Spengler
Hepatic steatosis can occur with any antiretroviral therapy (cART). Although single nucleotide polymorphisms (SNPs) have been identified to predispose to alcoholic and non-alcoholic fatty liver disease, their role for treatment-associated steatosis in HIV-positive patients remains unclear. We determined the frequency of PNPLA3 (rs738409), CSPG3/NCAN (rs2228603), GCKR (rs780094), PPP1R3B (rs4240624), TM6SF (rs8542926), LYPLAL1 (rs12137855) and MBOAT7 (rs626283) by RT-PCR in 117 HIV-positive patients on cART and stratified participants based on their "controlled attenuation parameter" (CAP) into probable (CAP: 215-300 dB/m) and definite (CAP >300 dB/m) hepatic steatosis...
2017: PloS One
https://www.readbyqxmd.com/read/28594915/conophylline-inhibits-non-alcoholic-steatohepatitis-in-mice
#17
Yukiomi Nakade, Kazumasa Sakamoto, Taeko Yamauchi, Tadahisa Inoue, Yuji Kobayashi, Takaya Yamamoto, Norimitsu Ishii, Tomohiko Ohashi, Yoshio Sumida, Kiyoaki Ito, Haruhisa Nakao, Yoshitaka Fukuzawa, Kazuo Umezawa, Masashi Yoneda
Conophylline (CnP), a vinca alkaloid extracted from the leaves of the tropical plant Ervatamia microphylla, attenuates hepatic fibrosis in mice. However, little is known about whether CnP inhibits steatosis, inflammation, and fibrosis in non-alcoholic steatohepatitis (NASH) in mice. A methionine-choline-deficient (MCD) diet was administered to male db/db mice as a NASH model, and CnP (1 μg/kg/d) was co-administered. Eight weeks after the commencement of the MCD diet, hepatic steatosis, inflammation, and fibrosis, and hepatic fat metabolism-, inflammation-, and fibrosis-related markers were examined...
2017: PloS One
https://www.readbyqxmd.com/read/28593786/characterization-of-liver-changes-in-zsf1-rats-an-animal-model-of-metabolic-syndrome
#18
Marta Borges Canha, José Pedro Portela-Cidade, Glória Conceição, Cláudia Sousa-Mendes, Sara Leite, Dulce Fontoura, Daniel Moreira-Gonçalves, Inês Falcão-Pires, André Lourenço, Adelino Leite-Moreira, Pedro Pimentel-Nunes
BACKGROUND: The non-alcoholic fatty liver disease is the hepatic counterpart of the metabolic syndrome. ZSF1 rats are a metabolic syndrome animal model in which liver changes have not been described yet. AIM: The characterization of liver histological and innate immunity changes in ZSF1 rats. METHODS: Five groups of rats were included (n = 7 each group): healthy Wistar-Kyoto control rats (Ctrl), hypertensive ZSF1 lean (Ln), ZSF1 obese rats with a normal diet (Ob), ZSF1 obese rates with a high-fat diet (Ob-HFD), and ZSF1 obese rats with low-intensity exercise training (Ob-Ex)...
June 8, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28591717/peretinoin-an-acyclic-retinoid-suppresses-steatohepatitis-and-tumorigenesis-by-activating-autophagy-in-mice-fed-an-atherogenic-high-fat-diet
#19
Hikari Okada, Riuta Takabatake, Masao Honda, Kai Takegoshi, Taro Yamashita, Mikiko Nakamura, Takayoshi Shirasaki, Yoshio Sakai, Tetsuro Shimakami, Naoto Nagata, Toshinari Takamura, Takuji Tanaka, Shuichi Kaneko
The pathogenesis of non-alcoholic steatohepatitis (NASH) is still unclear and the prevention of the development of hepatocellular carcinoma (HCC) has not been established. We established an atherogenic and high-fat diet mouse model that develops hepatic steatosis, inflammation, fibrosis, and liver tumors at a high frequency. Using two NASH-HCC mouse models, we showed that peretinoin, an acyclic retinoid, significantly improved liver histology and reduced the incidence of liver tumors. Interestingly, we found that peretinoin induced autophagy in the liver of mice, which was characterized by the increased co-localized expression of microtubule-associated protein light chain 3B-II and lysosome-associated membrane protein 2, and increased autophagosome formation and autophagy flux in the liver...
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28587303/the-role-of-lipid-and-lipoprotein-metabolism-in-non-alcoholic-fatty-liver-disease
#20
REVIEW
Francesco Massimo Perla, Maurizia Prelati, Michela Lavorato, Daniele Visicchio, Caterina Anania
Due to the epidemic of obesity across the world, nonalcoholic fatty liver disease (NAFLD) has become one of the most prevalent chronic liver disorders in children and adolescents. NAFLD comprises a spectrum of fat-associated liver conditions that can result in end-stage liver disease and the need for liver transplantation. Simple steatosis, or fatty liver, occurs early in NAFLD and may progress to nonalcoholic steatohepatitis, fibrosis and cirrhosis with increased risk of hepatocellular carcinoma. The mechanism of the liver injury in NAFLD is currently thought to be a "multiple-hit process" where the first "hit" is an increase in liver fat, followed by multiple additional factors that trigger the inflammatory activity...
June 6, 2017: Children
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