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Nonalcoholic fatty liver disease

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https://www.readbyqxmd.com/read/28432400/-the-intestinal-microbiome-and-metabolic-diseases-from-obesity-to-diabetes-and-nonalcoholic-steatohepatitis
#1
S C Bischoff
BACKGROUND: The intestinal microbiome consists of about 10 million genes, many of which encode digestive enzymes. This explains why animal and human experiments revealed that the intestinal microbiome adapts to food intake and optimizes energy harvest from food. This function is considered beneficial in states of lack of food, but following overnutrition, it might support the development of obesity. OBJECTIVES: The relevance of the intestinal microbiome for the pathogenesis of obesity and associated metabolic diseases such as fatty liver disease and type 2 diabetes mellitus and for the clinical management of such diseases shall be discussed...
April 21, 2017: Der Internist
https://www.readbyqxmd.com/read/28430371/evaluation-of-circulating-zonulin-as-a-potential-marker-in-the-pathogenesis-of-nonalcoholic-fatty-liver-disease
#2
Olfat M Hendy, Maha M Elsabaawy, Mona M Aref, Fatma M Khalaf, Abdel Moaty A Oda, Helmy M El Shazly
Nonalcoholic fatty liver disease (NAFLD) is a spectrum of liver disorders ranging from simple hepatic steatosis up to nonalcoholic steatohepatitis (NASH) evolving to cirrhosis and hepatocellular carcinoma (HCC). Liver biopsy is still the gold standard modality for diagnosing and staging NAFLD. The linkage between intestinal microbiota and NAFLD, might suggest a potential role of serum zonulin in NAFLD diagnosis. To appraise the role of circulating zonulin in NAFLD pathogenesis, 56 subjects with proved NAFLD by ultrasonography and liver biopsy, as well as 20 healthy controls were tested...
April 21, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28428362/hepatic-lipid-accumulation-cause-and-consequence-of-dysregulated-glucoregulatory-hormones
#3
Caroline E Geisler, Benjamin Jennings Renquist
Fatty liver can be diet, endocrine, genetic, viral, or drug induced. Independent of cause, hepatic lipid accumulation promotes systemic metabolic dysfunction. By acting as peroxisome proliferator activated receptor (PPAR) ligands, hepatic non-esterified fatty acids upregulate expression of gluconeogenic, beta-oxidative, lipogenic, and ketogenic genes, promoting hyperglycemia, hyperlipidemia, and ketosis. The typical hormonal environment in fatty liver disease consists of hyperinsulinemia, hyperglucagonemia, hypercortisolemia, growth hormone deficiency, and elevated sympathetic tone...
April 20, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28425467/hyperpolarized-13-c-spectroscopic-evaluation-of-oxidative-stress-in-a-rodent-model-of-steatohepatitis
#4
David M Wilson, Valentina Di Gialleonardo, Zhen J Wang, Valerie Carroll, Cornelius Von Morze, Andrew Taylor, Victor Sai, Mark VanCriekinge, Robert Bok, Michael A Ohliger, Kayvan R Keshari
Nonalcoholic fatty liver disease (NAFLD) has become highly prevalent, now considered the most common liver disease in the western world. Approximately one-third of patients with NASH develop non-alchoholic steatohepatitis (NASH), histologically defined by lobular and portal inflammation, and accompanied by marked oxidative stress. Patients with NASH are at increased risk for cirrhosis and hepatocellular carcinoma, and diagnosis currently requires invasive biopsy. In animal models of NASH, particularly the methionine-choline deficient (MCD) model, profound changes are seen in redox enzymes and key intracellular antioxidants...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28425408/testosterone-sex-hormone-binding-globulin-and-nonalcoholic-fatty-liver-disease-a-systematic-review-and-meta-analysis
#5
Veeravich Jaruvongvanich, Anawin Sanguankeo, Tanawan Riangwiwat, Sikarin Upala
INTRODUCTION AND AIM: Endogenous sex hormones are associated with the risk of diabetes and metabolic syndrome. Recent studies suggested the role of these hormones in nonalcoholic fatty liver disease (NAFLD). We conducted a systematic review and meta-analysis of observational studies investigating the association between sex hormones and NAFLD. MATERIAL AND METHODS: A comprehensive search of the databases of the MEDLINE and EMBASE was performed from inception through April 2016...
May 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28425401/mre-in-nafld-promising-but-further-validation-is-required
#6
John D Ryan, Emmanuel A Tsochatzis
MR elastography is a novel method for non-invasive fibrosis assessment, not yet sufficiently validated. In a recent study in 104 patients Park, Gastroenterology 2017; 152: 598-602), MRE was compared to transient elastography for the diagnosis of fibrosis is nonalcoholic fatty liver disease. The current viewpoint critically appraises this study.
May 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28422962/docosahexaenoic-acid-blocks-progression-of-western-diet-induced-nonalcoholic-steatohepatitis-in-obese-ldlr-mice
#7
Kelli A Lytle, Carmen P Wong, Donald B Jump
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a major public health concern in western societies. Nonalcoholic steatohepatitis (NASH), the progressive form of NAFLD, is characterized by hepatic steatosis, inflammation, oxidative stress and fibrosis. NASH is a risk factor for cirrhosis and hepatocellular carcinoma. NASH is predicted to be the leading cause of liver transplants by 2020. Despite this growing public health concern, there remain no Food and Drug Administration (FDA) approved NASH treatments...
2017: PloS One
https://www.readbyqxmd.com/read/28422749/obesity-induced-hepatic-steatosis-is-mediated-by-endoplasmic-reticulum-stress-in-the-subfornical-organ-of-the-brain
#8
Julie A Horwath, Chansol Hurr, Scott D Butler, Mallikarjun Guruju, Martin D Cassell, Allyn L Mark, Robin L Davisson, Colin N Young
Nonalcoholic fatty liver disease (NAFLD), characterized by an excess accumulation of hepatic triglycerides, is a growing health epidemic. While ER stress in the liver has been implicated in the development of NAFLD, the role of brain ER stress - which is emerging as a key contributor to a number of chronic diseases including obesity - in NAFLD remains unclear. These studies reveal that chemical induction of ER stress in the brain caused hepatomegaly and hepatic steatosis in mice. Conversely, pharmacological reductions in brain ER stress in diet-induced obese mice rescued NAFLD independent of body weight, food intake, and adiposity...
April 20, 2017: JCI Insight
https://www.readbyqxmd.com/read/28420164/the-angiogenesis-inhibitor-als-l1023-from-lemon-balm-leaves-attenuates-high-fat-diet-induced-nonalcoholic-fatty-liver-disease-through-regulating-the-visceral-adipose-tissue-function
#9
Jeongjun Kim, Haerim Lee, Jonghoon Lim, Jaeho Oh, Soon Shik Shin, Michung Yoon
Similar to neoplastic tissues, growth and development of adipose tissue are thought to be angiogenesis-dependent. Since visceral adipose tissue (VAT) is associated with development and progression of nonalcoholic fatty liver disease (NAFLD), we hypothesized that angiogenesis inhibition would attenuate obesity-induced NAFLD. We fed C57BL/6J mice a low-fat diet (LFD, chow 10% kcal fat), a high-fat diet (HFD, 45% kcal fat) or HFD supplemented with the lemon-balm extract ALS-L1023 (HFD-ALS) for 15 weeks. ALS-L1023 reduced endothelial cell-tube formation in vitro...
April 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28420094/nonalcoholic-fatty-liver-disease-and-insulin-resistance-new-insights-and-potential-new-treatments
#10
REVIEW
Hironori Kitade, Guanliang Chen, Yinhua Ni, Tsuguhito Ota
Nonalcoholic fatty liver disease (NAFLD) is one of the most common chronic liver disorders worldwide. It is associated with clinical states such as obesity, insulin resistance, and type 2 diabetes, and covers a wide range of liver changes, ranging from simple steatosis to non-alcoholic steatohepatitis (NASH), liver cirrhosis, and hepatocellular carcinoma. Metabolic disorders, such as lipid accumulation, insulin resistance, and inflammation, have been implicated in the pathogenesis of NAFLD, but the underlying mechanisms, including those that drive disease progression, are not fully understood...
April 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28419755/a-diagnostic-algorithm-for-assessment-of-liver-fibrosis-by-liver-stiffness-measurement-in-patients-with-chronic-hepatitis-b
#11
Yi-Jing Cai, Jia-Jia Dong, Xiao-Dong Wang, Si-Si Huang, Rui-Cong Chen, Yi Chen, Yu-Qun Wang, Mei Song, Yong-Ping Chen, Zhuo Li, Meng-Tao Zhou, Ke-Qing Shi
Steatosis could affect liver stiffness measurement in patients with nonalcoholic fatty liver disease and chronic hepatitis C. In the current study, we aimed to investigate the impact of steatosis on liver stiffness in chronic hepatitis B virus infected patients and develop a diagnostic algorithm for prediction of liver fibrosis by liver stiffness based on the controlled attenuation parameter. A total of 488 HBV infected patients who underwent clinical examination, FibroScan and liver biopsy were prospectively enrolled...
April 17, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28419582/free-breathing-liver-fat-quantification-using-a-multiecho-3d-stack-of-radial-technique
#12
Tess Armstrong, Isabel Dregely, Alto Stemmer, Fei Han, Yutaka Natsuaki, Kyunghyun Sung, Holden H Wu
PURPOSE: The diagnostic gold standard for nonalcoholic fatty liver disease is an invasive biopsy. Noninvasive Cartesian MRI fat quantification remains limited to a breath-hold (BH). In this work, a novel free-breathing 3D stack-of-radial (FB radial) liver fat quantification technique is developed and evaluated in a preliminary study. METHODS: Phantoms and healthy subjects (n = 11) were imaged at 3 Tesla. The proton-density fat fraction (PDFF) determined using FB radial (with and without scan acceleration) was compared to BH single-voxel MR spectroscopy (SVS) and BH 3D Cartesian MRI using linear regression (correlation coefficient ρ and concordance coefficient ρc ) and Bland-Altman analysis...
April 16, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28417561/population-pharmacokinetics-of-morphine-in-patients-with-nonalcoholic-steatohepatitis-nash-and-healthy-adults
#13
V Pierre, C K Johnston, B C Ferslew, Klr Brouwer, D Gonzalez
Altered expression and function of transporters in nonalcoholic steatohepatitis (NASH) patients may affect the pharmacokinetics (PK), efficacy, and safety of substrate drugs. A population pharmacokinetic (PopPK) analysis was performed to assess differences in morphine and morphine-3-glucuronide (M3G) disposition in NASH and healthy subjects. A total of 315 serum and 42 urine samples from 21 subjects (14 healthy; 7 NASH) were analyzed using NONMEM. Morphine and M3G PK were described by three- and one-compartment models, respectively...
April 18, 2017: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/28415887/amelioration-of-late-onset-hepatic-steatosis-in-idh2-deficient-mice
#14
Su Jeong Lee, Hanvit Cha, Hyunjin Kim, Jin Hyup Lee, Jeen-Woo Park
Nonalcoholic fatty liver disease (NAFLD) has a high prevalence in the general population and can evolve into nonalcoholic steatohepatosis (NASH), cirrosis, and complications such as liver failure and hepatocellular carcinoma. Recently, we reported that mitochondrial NADP(+)-dependent isocitrate dehydrogenase, encoded by the IDH2, plays an important role in the regulation of redox balance and oxidative stress levels which are tightly associated with intermediary metabolism and energy production. In the present study, we showed that in mice targeted disruption of IDH2 attenuates age-associated hepatic steatosis by the activation of p38/cJun NH2-terminal kinase (JNK) and p53, presumably induced by the elevation of mitochondrial reactive oxygen species (ROS), which in turn resulted in the suppression of hepatic lipogenesis and inflammation via the upregulation of fibroblast growth factor 21 (FGF21) and the inhibition of NFκB signaling pathways...
April 18, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28414138/apigenin-a-modulator-of-ppar%C3%AE-attenuates-hfd-induced-nafld-by-regulating-hepatocyte-lipid-metabolism-and-oxidative-stress-via-nrf2-activation
#15
Xiujing Feng, Wen Yu, Xinda Li, Feifei Zhou, Wenlong Zhang, Qi Shen, Jianxin Li, Can Zhang, Pingping Shen
Lipid metabolic disorders and oxidative stress in the liver are key steps in the progression of nonalcoholic fatty liver disease (NAFLD), which is a major risk factor for the development of metabolic syndrome. To date, no pharmacological treatment for this condition has been approved. Our previous study has found that the food-derived compound apigenin (Api) significantly attenuates obesity-induced metabolic syndrome by acting as a peroxisome proliferator-activated receptor gamma modulator (PPARM). Herein, a high fat diet (HFD) induced NAFLD model was used to dig out whether Api had the effect on NAFLD...
April 13, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28409336/dietary-docosahexaenoic-acid-and-trans-10-cis-12-conjugated-linoleic-acid-differentially-alter-oxylipin-profiles-in-mouse-periuterine-adipose-tissue
#16
Yuriko Adkins, Benjamin J Belda, Theresa L Pedersen, Dawn M Fedor, Bruce E Mackey, John W Newman, Darshan S Kelley
Diets containing high n-3 polyunsaturated fatty acids (PUFA) decrease inflammation and the incidence of chronic diseases including cardiovascular disease and nonalcoholic fatty liver disease while trans-fatty acids (TFA) intake increases the incidence of these conditions. Some health benefits of n-3 PUFA are mediated through the impact of their oxygenated metabolites, i.e. oxylipins. The TFA, trans-10, cis-12-conjugated linoleic acid (CLA; 18:2n-6) is associated with adipose tissue (AT) inflammation, oxidative stress, and wasting...
April 13, 2017: Lipids
https://www.readbyqxmd.com/read/28406477/mir-21-ablation-and-obeticholic-acid-ameliorate-nonalcoholic-steatohepatitis-in-mice
#17
Pedro M Rodrigues, Marta B Afonso, André L Simão, Catarina C Carvalho, Alexandre Trindade, António Duarte, Pedro M Borralho, Mariana V Machado, Helena Cortez-Pinto, Cecília Mp Rodrigues, Rui E Castro
microRNAs were recently suggested to contribute to the pathogenesis of nonalcoholic fatty liver disease (NAFLD), a disease lacking specific pharmacological treatments. In that regard, nuclear receptors are arising as key molecular targets for the treatment of nonalcoholic steatohepatitis (NASH). Here we show that, in a typical model of NASH-associated liver damage, microRNA-21 (miR-21) ablation results in a progressive decrease in steatosis, inflammation and lipoapoptosis, with impairment of fibrosis. In a complementary fast food (FF) diet NASH model, mimicking features of the metabolic syndrome, miR-21 levels increase in both liver and muscle, concomitantly with decreased expression of peroxisome proliferator-activated receptor α (PPARα), a key miR-21 target...
April 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28398481/mertk-rs4374383-variant-predicts-incident-nonalcoholic-fatty-liver-disease-and-diabetes-role-of-mononuclear-cell-activation-and-adipokine-response-to-dietary-fat
#18
Giovanni Musso, Maurizio Cassader, Franco De Michieli, Elena Paschetta, Silvia Pinach, Francesca Saba, Daria Bongiovanni, Luciana Framarin, Mara Berrutti, Nicola Leone, Stefania Corvisieri, Renato Parente, Federica Molinaro, Antonio Sircana, Simona Bo, Roberto Gambino
No abstract text is available yet for this article.
April 7, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28397039/er-stress-mediated-cell-damage-contributes-to-the-release-of-eda-fibronectin-from-hepatocytes-in-nonalcoholic-fatty-liver-disease
#19
Lei He, Fa-Hu Yuan, Ting Chen, Qiang Huang, Yu Wang, Zhi-Guo Liu
Fibronectin containing extra domain A (EDA(+) FN), a functional glycoprotein participating in several cellular processes, correlates with chronic liver disease. Herein, we aim to investigate the expression and secretion of EDA(+) FN from hepatocytes in nonalcoholic fatty liver disease (NAFLD) and the underlying mechanisms. Circulating levels of EDA(+) FN were determined by ELISA in clinical samples. Western blotting and flow cytometry were performed on L02 and HepG2 cell lines to analyze whether the levels of EDA(+) FN were associated with endoplasmic reticulum (ER) stress-related cell death...
April 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28395890/frequency-of-nonalcoholic-fatty-liver-disease-and-subclinical-atherosclerosis-among-young-mexican-americans
#20
Clarence Gill, Kristina P Vatcheva, Jen-Jung Pan, Beverly Smulevitz, David D McPherson, Michael Fallon, Joseph B McCormick, Susan P Fisher-Hoch, Susan T Laing
Nonalcoholic fatty liver disease (NAFLD) is considered as the hepatic manifestation of the metabolic syndrome, whose criteria are risk factors for atherosclerotic cardiovascular disease. We aimed to evaluate the prevalence of NAFLD, its association with subclinical atherosclerosis, and factors that may account for this association in Mexican Americans. In a population-based cross-sectional sample drawn from the Cameron County Hispanic Cohort in Texas, carotid intima media thickness (cIMT), an indicator of subclinical atherosclerosis, was measured...
March 16, 2017: American Journal of Cardiology
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