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Condition: Fatty Liver Disease (FLD)

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Total 185 results found since Jan 2013.

Hedgehog signaling is a potent regulator of liver lipid metabolism and reveals a GLI-code associated with steatosis
This study assessed the unexpected role of the Hedgehog pathway in adult liver lipid metabolism. Using transgenic mice with conditional hepatocyte-specific deletion of Smoothened in adult mice, we showed that hepatocellular inhibition of Hedgehog signaling leads to steatosis by altering the abundance of the transcription factors GLI1 and GLI3. This steatotic 'Gli-code' caused the modulation of a complex network of lipogenic transcription factors and enzymes, including SREBP1 and PNPLA3, as demonstrated by microarray analysis and siRNA experiments and could be confirmed in other steatotic mouse models as well as in steatoti...
Source: eLife - May 17, 2016 Category: Biomedical Science Tags: Biochemistry Cell Biology Hedgehog signalling hepatocytes Human liver Mouse NAFLD smoothened steatotic Gli-code Source Type: research

Receptor interacting protein 3 protects mice from high fat diet‐induced liver injury
Conclusion: Absence of RIP3, a key mediator of necroptosis, exacerbated HFD‐induced liver injury, associated with increased inflammation and hepatocyte apoptosis, as well as early fibrotic responses. These findings indicate that shifts in the mode of hepatocellular death can influence disease progression and have therapeutic implications because manipulation of hepatocyte cell death pathways is being considered as a target for treatment of NAFLD. This article is protected by copyright. All rights reserved.
Source: Hepatology - June 14, 2016 Category: Internal Medicine Authors: Sanjoy Roychowdhury, Rebecca L. McCullough, Carlos Sanz‐Garcia, Paramananda Saikia, Naim Alkhouri, Ammar Matloob, Katherine Pollard, Megan R. McMullen, Colleen M. Croniger, Laura E. Nagy Tags: Steatohepatitis and Metabolic Liver Disease Source Type: research

Hepatocyte-protective effect of nectandrin B, a nutmeg lignan, against oxidative stress: Role of Nrf2 activation through ERK phosphorylation and AMPK-dependent inhibition of GSK-3 β.
This study investigated the hepatocyte-protective effect of nectandrin B against tert-butylhydroperoxide-induced oxidative injury and the underlying molecular mechanism. The cell viability assay revealed that nectandrin B prevents apoptosis stimulated by tert-butylhydroperoxide in both HepG2 cells and primary mouse hepatocytes. Nectandrin B also attenuated ROS production and restored the depleted glutathione level. Real-time PCR and immunoblot analyses showed that the expression of glutamate-cysteine ligase, an enzyme responsible for the glutathione biosynthesis, was induced by nectandrin B, indicating its indirect antioxi...
Source: Toxicology and Applied Pharmacology - August 6, 2016 Category: Toxicology Authors: Song JS, Kim EK, Choi YW, Oh WK, Kim YM Tags: Toxicol Appl Pharmacol Source Type: research

Rubicon inhibits autophagy and accelerates hepatocyte apoptosis and lipid accumulation in nonalcoholic fatty liver disease
Conclusion: Rubicon is overexpressed and plays a pathogenic role in NAFLD by accelerating hepatocellular lipoapoptosis and lipid accumulation, as well as inhibiting autophagy. Rubicon may be a novel therapeutic target for regulating NAFLD development and progression. This article is protected by copyright. All rights reserved.
Source: Hepatology - September 15, 2016 Category: Internal Medicine Authors: Satoshi Tanaka, Hayato Hikita, Tomohide Tatsumi, Ryotaro Sakamori, Yasutoshi Nozaki, Sadatsugu Sakane, Yuto Shiode, Tasuku Nakabori, Yoshinobu Saito, Naoki Hiramatsu, Keisuke Tabata, Tsuyoshi Kawabata, Maho Hamasaki, Hidetoshi Eguchi, Hiroaki Nagano, Tamo Tags: Steatohepatitis and Metabolic Liver Disease Source Type: research

HNF-4alpha Negatively Regulates Hepcidin Expression Through BMPR1A in HepG2 Cells.
In conclusion, the present study suggests that HNF-4α has a suppressive effect on hepcidin expression by inactivating the BMP pathway, specifically via BMPR1A, in HepG2 cells. PMID: 27660075 [PubMed - as supplied by publisher]
Source: Biological Trace Element Research - September 22, 2016 Category: Biology Authors: Shi W, Wang H, Zheng X, Jiang X, Xu Z, Shen H, Li M Tags: Biol Trace Elem Res Source Type: research

MiR-30c-5p ameliorates hepatic steatosis in leptin receptor-deficient (db/db) mice via down-regulating FASN.
In this study, we observed a significant reduction of miR-30c-5p in the liver of leptin receptor-deficient (db/db) mice. Remarkably, recombinant adeno-associated virus (rAAV)-mediated delivery of miR-30c-5p was sufficient to attenuate triglyceride accumulation and hepatic steatosis in db/db mice. Through computational prediction, KEGG analysis and Ago2 co-immunoprecipitation, we identified that miR-30c-5p directly targeted fatty acid synthase, a key enzyme in fatty acid biosynthesis. Moreover, down-regulation of FASN by siRNA attenuated some key features of NAFLD, including decreased triglyceride accumulate and lipid depos...
Source: Oncotarget - January 16, 2017 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

Mutation of miR-21 targets endogenous lipoprotein receptor-related protein 6 and nonalcoholic fatty liver disease.
Authors: Li CP, Li HJ, Nie J, Chen X, Zhou X Abstract Nonalcoholic fatty liver disease (NAFLD) is a chronic disorder characterized by hepatic fat accumulation and abnormal lipid metabolism. Although miR-21 has been implicated in nonalcoholic fatty liver disease, it is unknown whether miR-21 could function as a therapeutic target. Here, we perform transfection analysis of miR-21 mimic or control mimic to evaluate the effects of miR-21 expression levels on human HepG2 nonalcoholic fatty liver cells. We used siRNA techniques to knock down miR-21 in HepG2 and control 293T cell lines, and then monitored lipid production...
Source: American Journal of Translational Research - March 27, 2017 Category: Research Tags: Am J Transl Res Source Type: research

Apelin protects against liver X receptor-mediated steatosis through AMPK and PPAR α in human and mouse hepatocytes.
Apelin protects against liver X receptor-mediated steatosis through AMPK and PPARα in human and mouse hepatocytes. Cell Signal. 2017 Aug 15;39:84-94 Authors: Huang J, Kang S, Park SJ, Im DS Abstract Non-alcoholic fatty liver disease is the most commonly occurring chronic liver disease, and hepatic steatosis, a condition defined as extensive lipid accumulation in hepatocytes, is associated with liver dysfunction and metabolic diseases, such as, obesity and type II diabetes. Apelin is an adipokine that acts on a G protein-coupled receptor named APJ, and has been established to play pivotal roles in var...
Source: Cellular Signalling - August 15, 2017 Category: Cytology Authors: Huang J, Kang S, Park SJ, Im DS Tags: Cell Signal Source Type: research

Omega-3 polyunsaturated fatty acids protect human hepatoma cells from developing steatosis through FFA4 (GPR120)
Publication date: Available online 7 November 2017 Source:Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids Author(s): Saeromi Kang, Jin Huang, Bo-Kyung Lee, Young-Suk Jung, Eunok Im, Jung-Min Koh, Dong-Soon Im Protective effect of omega-3 polyunsaturated fatty acids (n-3 PUFA) on non-alcoholic fatty liver disease has been demonstrated. FFA4 (also known as GPR120; a G protein-coupled receptor) has been suggested to be a target of n-3 PUFA. FFA4 expression in hepatocytes has also been reported from liver biopsies in child fatty liver patients. In order to assess the functional role of FFA4 in hepat...
Source: Biochimica et Biophysica Acta (BBA) Molecular and Cell Biology of Lipids - November 8, 2017 Category: Lipidology Source Type: research

Omega-3 polyunsaturated fatty acids protect human hepatoma cells from developing steatosis through FFA4 (GPR120).
Abstract Protective effect of omega-3 polyunsaturated fatty acids (n-3 PUFA) on non-alcoholic fatty liver disease has been demonstrated. FFA4 (also known as GPR120; a G protein-coupled receptor) has been suggested to be a target of n-3 PUFA. FFA4 expression in hepatocytes has also been reported from liver biopsies in child fatty liver patients. In order to assess the functional role of FFA4 in hepatic steatosis, we used an in vitro model of liver X receptor (LXR)-mediated hepatocellular steatosis. FFA4 expression was confirmed in Hep3B and HepG2 human hepatoma cells. T0901317 (a specific LXR activator) induced lip...
Source: Biochimica et Biophysica Acta - November 7, 2017 Category: Biochemistry Authors: Kang S, Huang J, Lee BK, Jung YS, Im E, Koh JM, Im DS Tags: Biochim Biophys Acta Source Type: research

Scutellaria baicalensis regulates FFA metabolism to ameliorate NAFLD through the AMPK-mediated SREBP signaling pathway
This study aimed to explore the effects and mechanisms ofS. baicalensis and its major constituent baicalin on hepatic lipotoxicity. KK-Ay mice and orotic acid (OA)-induced nonalcoholic fatty liver disease (NAFLD) rats were used to evaluate lipid metabolism regulatory effects. Sodium oleate-induced triglyceride-accumulated HepG2 cells were used for the mechanism study, pretreated with or without compound C or STO-609 or transfected with liver kinase B1 (LKB1) siRNA. In KK-Ay mice,S. baicalensis extract showed a decreased effect on serum and hepatic triglycerides, total cholesterols, and free fatty acid (FFA) levels after 8 ...
Source: Journal of Natural Medicines - March 14, 2018 Category: Drugs & Pharmacology Source Type: research

High circulatory leptin mediated NOX-2-peroxynitrite-miR21 axis activate mesangial cells and promotes renal inflammatory pathology in nonalcoholic fatty liver disease
Publication date: July 2018 Source:Redox Biology, Volume 17 Author(s): Firas Alhasson, Ratanesh Kumar Seth, Sutapa Sarkar, Diana A. Kimono, Muayad S. Albadrani, Diptadip Dattaroy, Varun Chandrashekaran, Geoffrey I. Scott, Samir Raychoudhury, Mitzi Nagarkatti, Prakash Nagarkatti, Anna Mae Diehl, Saurabh Chatterjee High circulatory insulin and leptin followed by underlying inflammation are often ascribed to the ectopic manifestations in non-alcoholic fatty liver disease (NAFLD) but the exact molecular pathways remain unclear. We have shown previously that CYP2E1-mediated oxidative stress and circulating leptin in NAFLD is a...
Source: Redox Biology - April 14, 2018 Category: Biology Source Type: research

Heat Shock Protein 72 Regulates Hepatic Lipid Accumulation.
Abstract Induction of the chaperone Heat Shock Protein 72 (HSP72) through heat treatment, exercise, or overexpression improves glucose tolerance and mitochondrial function in skeletal muscle. Less is known about HSP72 function in the liver where lipid accumulation can result in insulin resistance and Nonalcoholic Fatty Liver Disease (NAFLD). The purpose of this study was 1) to determine whether weekly in vivo heat treatment (HT) induces hepatic HSP72 and improves glucose tolerance in rats fed a high-fat diet (HFD) and 2) to determine the ability of HSP72 to protect against lipid accumulation and mitochondrial dysf...
Source: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology - June 20, 2018 Category: Physiology Authors: Archer AE, Rogers RS, Von Schulze AT, Wheatley JL, Morris EM, McCoin CS, Thyfault JP, Geiger PC Tags: Am J Physiol Regul Integr Comp Physiol Source Type: research

High circulatory leptin mediated NOX-2-peroxynitrite-miR21 axis activate mesangial cells and promotes renal inflammatory pathology in nonalcoholic fatty liver disease
Publication date: July 2018Source: Redox Biology, Volume 17Author(s): Firas Alhasson, Ratanesh Kumar Seth, Sutapa Sarkar, Diana A. Kimono, Muayad S. Albadrani, Diptadip Dattaroy, Varun Chandrashekaran, Geoffrey I. Scott, Samir Raychoudhury, Mitzi Nagarkatti, Prakash Nagarkatti, Anna Mae Diehl, Saurabh ChatterjeeAbstractHigh circulatory insulin and leptin followed by underlying inflammation are often ascribed to the ectopic manifestations in non-alcoholic fatty liver disease (NAFLD) but the exact molecular pathways remain unclear. We have shown previously that CYP2E1-mediated oxidative stress and circulating leptin in NAFLD...
Source: Redox Biology - July 5, 2018 Category: Biology Source Type: research

Polydatin prevents fructose-induced liver inflammation and lipid deposition through increasing miR-200a to regulate Keap1/Nrf2 pathway
Publication date: Available online 5 July 2018Source: Redox BiologyAuthor(s): Xiao-Juan Zhao, Han-Wen Yu, Yan-Zi Yang, Wen-Yuan Wu, Tian-Yu Chen, Ke-Ke Jia, Lin-Lin Kang, Rui-Qing Jiao, Ling-Dong KongAbstractOxidative stress is a critical factor in nonalcoholic fatty liver disease pathogenesis. MicroRNA-200a (miR-200a) is reported to target Kelch-like ECH-associated protein 1 (Keap1), which regulates nuclear factor erythroid 2-related factor 2 (Nrf2) anti-oxidant pathway. Polydatin (3,4′,5-trihydroxy-stilbene-3-β-D-glucoside), a polyphenol found in the rhizome of Polygonum cuspidatum, have anti-oxidative, anti-inflammat...
Source: Redox Biology - July 6, 2018 Category: Biology Source Type: research