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https://www.readbyqxmd.com/read/28429814/sulfated-polysaccharides-from-enteromorpha-prolifera-suppress-srebp-2-and-hmg-coa-reductase-expression-and-attenuate-non-alcoholic-fatty-liver-disease-induced-by-a-high-fat-diet
#1
Rendong Ren, Junjie Gong, Yanyan Zhao, Xinyun Zhuang, Yin Ye, Wenting Lin
Non-alcoholic fatty liver disease (NAFLD) is caused by fat accumulation and is associated with abnormal cholesterol metabolism. Previous work indicates that polysaccharides from alga Enteromorpha prolifera improve glucose metabolism and lower cholesterol in diabetic rats. Thus, we studied the possible protective effects of E. prolifera polysaccharides (EP) in the development of NAFLD and underlying mechanisms. EP (200 mg kg(-1)) significantly reduced the liver weight and significantly lowered hepatic HMG-CoA reductase (HMGCR) mRNA protein expression...
April 21, 2017: Food & Function
https://www.readbyqxmd.com/read/28429344/up-regulation-of-microrna-367-promotes-liver-steatosis-through-repressing-tbl1-in-obese-mice
#2
D-D Li, Y Liu, L Xue, D-Y Su, W-Y Pang
OBJECTIVE: Increasing evidence has demonstrated that microRNAs (miRNAs) play a critical role in the progression of metabolic disorders, including obesity-induced non-alcoholic fatty liver disease (NAFLD). In the present study, the expression and function of miR-367 were investigated. MATERIALS AND METHODS: C57BL/6 male mice aged 8 weeks were fed with a normal diet (ND) or high-fat-diet (HFD). The expression levels of miR-367 were analyzed in livers from two groups of mice by quantitative real-time PCR...
April 2017: European Review for Medical and Pharmacological Sciences
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/28428116/cycloastragenol-improves-hepatic-steatosis-by-activating-farnesoid-x-receptor-signalling
#4
Ming Gu, Shiying Zhang, Yuanyuan Zhao, Jinwen Huang, Yahui Wang, Yin Li, Shengjie Fan, Li Yang, Guang Ji, Qingchun Tong, Cheng Huang
Non-alcoholic fatty liver disease (NAFLD) has become a global health problem. However, there is no approved therapy for NAFLD. Farnesoid X receptor (FXR) is a potential drug target for treatment of NAFLD. In an attempt to screen FXR agonists, we found that cycloastragenol (CAG), a natural occurring compound in Astragali Radix, stimulated FXR transcription activity. In animal studies, we demonstrated that CAG treatment resulted in obvious reduction of high-fat diet induced lipid accumulation in liver accompanied by lowered blood glucose, serum triglyceride levels and hepatic bile acid pool size...
April 17, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28427239/foxo3a-dependent-bim-transcription-protects-mice-from-a-high-fat-diet-via-inhibition-of-activation-of-the-nlrp3-inflammasome-by-facilitating-autophagy-flux-in-kupffer-cells
#5
Liu Yan, Zhang Wenfeng, Wu Xiaoling, Gong Jianping
BACKGROUND: The role of Foxo3a in the regulation of autophagy flux and activation of the NLRP3 inflammasome in KCs suffering from HFD conditions is unknown. RESULTS: Up-regulation of Foxo3a restored autophagy flux and dampened the activation of the NLRP3 inflammasome in KCs stimulated with PA and LPS. In contrast, down-regulation of Foxo3a increased blockage of autophagy flux and promoted NLRP3 inflammasome activation. Additionally, mRNA levels of Bim were significantly changed with the alteration of Foxo3a in KCs under PA and LPS stimulation among foxo3a targeted genes...
March 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425467/hyperpolarized-13-c-spectroscopic-evaluation-of-oxidative-stress-in-a-rodent-model-of-steatohepatitis
#6
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/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/28421320/hepatocyte-specific-depletion-of-ubiquitin-regulatory-x-domain-containing-protein-8-accelerates-fibrosis-in-a-mouse-non-alcoholic-steatohepatitis-model
#9
Norihiro Imai, Michitaka Suzuki, Yoji Ishizu, Teiji Kuzuya, Takashi Honda, Kazuhiko Hayashi, Masatoshi Ishigami, Yoshiki Hirooka, Tetsuya Ishikawa, Hidemi Goto, Toyoshi Fujimoto
Ubiquitin regulatory X domain-containing protein 8 (UBXD8) is engaged in the degradation of lipidated apolipoprotein B in hepatocytes. We previously showed that hepatocyte-specific UBXD8-deficient mice (U8-HKO) fed a moderately high-fat diet (31 kcal % fat) showed periportal macrovesicular steatosis along with a decrease in very low-density lipoprotein secretion, but did not develop fibrosis. In the present study, we examined whether U8-HKO mice show NASH-like phenotypes when fed a very high-fat diet (60 kcal % fat)...
April 18, 2017: Histochemistry and Cell Biology
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
#10
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/28414763/enhanced-offspring-predisposition-to-steatohepatitis-with-maternal-high-fat-diet-is-associated-with-epigenetic-and-microbiome-alterations
#11
Umesh D Wankhade, Ying Zhong, Ping Kang, Maria Alfaro, Sree V Chintapalli, Keshari M Thakali, Kartik Shankar
OBJECTIVE: Non-alcoholic fatty liver disease (NAFLD) is an important co-morbidity associated with obesity and a precursor to steatohepatitis. However, the contributions of gestational and early life influences on development of NAFLD and NASH remain poorly appreciated. METHODS: Two independent studies were performed to examine whether maternal over-nutrition via exposure to high fat diet (HFD) leads to exacerbated hepatic responses to post-natal HFD and methionine choline deficient (MCD) diets in the offspring...
2017: PloS One
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
#12
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/28414056/protective-effects-of-glycyrrhizic-acid-against-non-alcoholic-fatty-liver-disease-in-mice
#13
Xue Sun, Xingping Duan, Changyuan Wang, Zhihao Liu, Pengyuan Sun, Xiaokui Huo, Xiaodong Ma, Huijun Sun, Kexin Liu, Qiang Meng
Non-alcoholic fatty liver disease (NAFLD) has become a predictive factor of death from many diseases. The purpose of the present study is to investigate the protective effect of glycyrrhizic acid (GA), a natural triterpene glycoside, on NAFLD induced by a high-fat diet (HFD) in mice, and further to elucidate the mechanisms underlying GA protection. GA treatment significantly reduced the relative liver weight, serum ALT, AST activities, levels of serum lipid, blood glucose and insulin. GA suppressed lipid accumulation in liver...
April 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28406477/mir-21-ablation-and-obeticholic-acid-ameliorate-nonalcoholic-steatohepatitis-in-mice
#14
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/28386616/molecular-adaptations-underlying-the-beneficial-effects-of-hydroxytyrosol-in-the-pathogenic-alterations-induced-by-a-high-fat-diet-in-mouse-liver-ppar-%C3%AE-and-nrf2-activation-and-nf-%C3%AE%C2%BAb-down-regulation
#15
Rodrigo Valenzuela, Paola Illesca, Francisca Echeverría, Alejandra Espinosa, Miguel Ángel Rincón-Cervera, Macarena Ortiz, María Catalina Hernandez-Rodas, Alfonso Valenzuela, Luis A Videla
SCOPE: Non-alcoholic fatty liver disease (NAFLD) is a condition characterized by an increment in the liver fat content, with a concomitant reduction in the content of n-3-long chain polyunsaturated fatty acids (n-3 LCPUFAs), downregulation of PPAR-α activity, and upregulation of NF-κB activity, effects that induce pro-lipogenic and pro-inflammatory responses. Hydroxytyrosol (HT), a polyphenol with cytoprotective effects present in extra virgin olive oil, improves the cellular antioxidant capacity for activation of transcription factor Nrf2...
April 19, 2017: Food & Function
https://www.readbyqxmd.com/read/28384519/kefir-alleviates-obesity-and-hepatic-steatosis-in-high-fat-diet-fed-mice-by-modulation-of-gut-microbiota-and-mycobiota-targeted-and-untargeted-community-analysis-with-correlation-of-biomarkers
#16
Dong-Hyeon Kim, Hyunsook Kim, Dana Jeong, Il-Byeong Kang, Jung-Whan Chon, Hong-Seok Kim, Kwang-Young Song, Kun-Ho Seo
Kefir is a probiotic beverage containing over 50 species of lactic acid bacteria and yeast. In this study, the anti-obesity and anti-non-alcoholic fatty liver disease (NAFLD) effects of kefir were comprehensively addressed along with targeted and untargeted community analysis of the fecal microbiota in a high-fat diet (HFD)-induced obese mouse model. HFD-fed C57BL/6 mice were orally administrated either kefir or milk (control) once a day for 12 weeks, and body and organ weight, fecal microbiota and mycobiota, histopathology, blood cholesterol and cytokines and gene expressions were analyzed...
March 4, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28381526/mirna-132-induces-hepatic-steatosis-and-hyperlipidaemia-by-synergistic-multitarget-suppression
#17
Geula Hanin, Nadav Yayon, Yonat Tzur, Rotem Haviv, Estelle R Bennett, Shiran Udi, Yoganathan R Krishnamoorthy, Eleni Kotsiliti, Rivka Zangen, Ben Efron, Joseph Tam, Orit Pappo, Eyal Shteyer, Eli Pikarsky, Mathias Heikenwalder, David S Greenberg, Hermona Soreq
OBJECTIVE: Both non-alcoholic fatty liver disease (NAFLD) and the multitarget complexity of microRNA (miR) suppression have recently raised much interest, but the in vivo impact and context-dependence of hepatic miR-target interactions are incompletely understood. Assessing the relative in vivo contributions of specific targets to miR-mediated phenotypes is pivotal for investigating metabolic processes. DESIGN: We quantified fatty liver parameters and the levels of miR-132 and its targets in novel transgenic mice overexpressing miR-132, in liver tissues from patients with NAFLD, and in diverse mouse models of hepatic steatosis...
April 5, 2017: Gut
https://www.readbyqxmd.com/read/28371239/the-mediterranean-dietary-pattern-as-the-diet-of-choice-for-nafld-evidence-and-plausible-mechanisms
#18
Shira Zelber-Sagi, Federico Salomone, Liat Mlynarsky
Non-alcoholic fatty liver disease (NAFLD) has become a major global health burden, leading to increased risk for cirrhosis, hepatocellular carcinoma, type-2 diabetes and cardiovascular disease. Lifestyle intervention aiming at weight reduction is the most established treatment. However, changing the dietary composition even without weight loss can also reduce steatosis and improve metabolic alterations as insulin resistance and lipid profile. The Mediterranean diet (MD) pattern has been proposed as appropriate for this goal, and was recommended as the diet of choice for the treatment of NAFLD by the EASL-EASD-EASO Clinical Practice Guidelines...
April 2, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28368295/homocysteine-induces-hepatic-steatosis-involving-er-stress-response-in-high-methionine-diet-fed-mice
#19
Yanbiao Ai, Zhenzhen Sun, Chuan Peng, Lingli Liu, Xiaoqiu Xiao, Jibin Li
Elevated circulating homocysteine (Hcy) has been proposed to be associated with non-alcoholic fatty liver disease (NAFLD). It is also reported that Hcy causes protein misfolding in the endoplasmic reticulum (ER). In this study, we used a high methionine diet (HMD)-fed mouse model and cultured primary hepatocytes to investigate the effects of Hcy on hepatic lipids metabolism. C57BL/6J mice received either standard chow diet (CT, n = 10) or diet supplemented with 2% methionine (MET, n = 10) for 16 weeks. In in vitro experiments, cultured mouse primary hepatocytes were treated with Hcy, or Hcy combined with 4-phenylbutyric acid (4-PBA), or tunicamycin (TM), respectively...
April 1, 2017: Nutrients
https://www.readbyqxmd.com/read/28363784/the-effect-of-cannabinoid-receptor-1-blockade-on-hepatic-free-fatty-acid-profile-in-mice-with-nonalcoholic-fatty-liver-disease
#20
Bojan Jorgačević, Danijela Vučević, Ivana Đuričić, Slađana Šobajić, Dušan Mladenović, Milena Vesković, Rada Ješić Vukićević, Tatjana Radosavljević
We used rimonabant to investigate the role of CB1 receptor on hepatic FFAs profile during NAFLD. Male mice C57BL/6 were divided into: control group fed with control diet 20 weeks (C; n=6); group fed with HFD 20 weeks (HF; n=6); group fed with control diet and treated with rimonabant after 18 weeks (R; n=9); group fed with HFD and treated with rimonabant after 18 weeks (HFR; n=10). Rimonabant (10mg/kg) was administered daily to HFR and R group by oral gavage. Rimonabant decreased liver palmitic acid proportion in HFR group compared to HF group (p<0...
March 29, 2017: Chemistry and Physics of Lipids
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