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https://www.readbyqxmd.com/read/29334664/methyl-dehydroabietate-counters-high-fat-diet-induced-insulin-resistance-and-hepatic-steatosis-by-modulating-peroxisome-proliferator-activated-receptor-signaling-in-mice
#1
Hiroki Yoshioka, Yuki Mizuno, Tomohiro Yamaguchi, Yoshimi Ichimaru, Koichi Takeya, Yukio Hitotsuyanagi, Tsunemasa Nonogaki, Yutaka Aoyagi
The aim of this study was to investigate the therapeutic effects of methyl dehydroabietate (mDA) on adipocyte differentiation in 3T3-L1 preadipocytes and obesity characteristics induced by high-fat diet (HFD) in mice. Adipocyte differentiation in 3T3-L1 cells was evaluated after 14 days of incubation with mDA. mDA enhanced adipocyte differentiation in 3T3-L1 cells. For the in vivo evaluation, five-week-old male C57BL/6J mice were fed HFD or normal CE-2 diet (control) for eight weeks. During the experimental period, mice were administered mDA (50 mg/kg, p...
January 12, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29332859/grading-fatty-liver-by-ultrasound-time-domain-radiofrequency-signal-analysis-an-in-vivo-study-of-rats
#2
Wenwu Ling, Jierong Quan, Jiangli Lin, Tingting Qiu, Jiawu Li, Qiang Lu, Changli Lu, Yan Luo
This study aimed to assess the severity of fatty liver (FL) by analyzing ultrasound radiofrequency (RF) signals in rats. One hundred and twenty rats (72 in the FL group and 48 in the control group) were used for this purpose. Histological results were the golden standard: 42 cases had normal livers (N), 30 cases had mild FL (L1), 25 cases had moderate FL (L2), 13 cases presented with severe FL (L3), and 10 cases were excluded from the study. Four RF parameters (Mean, Mean/SD ratio [MSR], skewness [SK], and kurtosis [KU] were extracted...
January 12, 2018: Experimental Animals
https://www.readbyqxmd.com/read/29331880/preventive-effects-of-indole-3-carbinol-against-alcohol-induced-liver-injury-in-mice-via-antioxidant-anti-inflammatory-and-anti-apoptotic-mechanisms-role-of-gut-liver-adipose-tissue-axis
#3
Youngshim Choi, Mohamed A Abdelmegeed, Byoung-Joon Song
Indole-3-carbinol (I3C), found in Brassica family vegetables, exhibits antioxidant, anti-inflammatory, and anti-cancerous properties. Here, we aimed to evaluate the preventive effects of I3C against ethanol (EtOH)-induced liver injury and study the protective mechanism(s) by using the well-established chronic-plus-binge alcohol exposure model. The preventive effects of I3C were evaluated by conducting various histological, biochemical, and real-time PCR analyses in mouse liver, adipose tissue, and colon, since functional alterations of adipose tissue and intestine can also participate in promoting EtOH-induced liver damage...
December 10, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29331340/hsp72-protects-from-liver-injury-via-attenuation-of-hepatocellular-death-oxidative-stress-and-jnk-signaling
#4
Kateryna Levada, Nurdan Guldiken, Xiaoji Zhang, Giovanna Vella, Fa-Rong Mo, Laura P James, Johannes Haybaeck, Sonja M Kessler, Alexandra K Kiemer, Thomas Ott, Daniel Hartmann, Norbert Hüser, Marianne Ziol, Christian Trautwein, Pavel Strnad
BACKGROUND AND AIMS: Heat shock protein (Hsp) 72 is a molecular chaperone that is upregulated in response to stress and possesses broad cytoprotective functions. To determine its hepatic function, we studied its expression in human liver disorders and its biological significance in newly generated transgenic animals. AIM AND METHODS: Double transgenic mice overexpressing Hsp72 (gene HSPA1A) under the control of a tissue-specific tetracycline-inducible system (Hsp72-LAP mice) were produced...
January 10, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29330836/pathogenesis-of-non-alcoholic-fatty-liver-disease-mediated-by-yap
#5
Ping Chen, Qihui Luo, Chao Huang, Qi Gao, Like Li, Jingfei Chen, Bing Chen, Wentao Liu, Wen Zeng, Zhengli Chen
OBJECTIVE: This study aimed to investigate the mechanism of the interaction between Yes-associated protein (YAP) and transforming growth factor-β (TGF-β)/Smad signaling pathways in the development of non-alcoholic fatty liver disease (NAFLD). METHODS: Serum samples of monkeys with biopsy-proven NAFLD and healthy normal monkeys were used to measure fasting plasma glucose (FPG), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglyceride (TG) and albumin (ALB) with the BECKMAN CX5 PRO...
January 12, 2018: Hepatology International
https://www.readbyqxmd.com/read/29330220/regulation-of-drug-metabolism-by-the-interplay-of-inflammatory-signaling-steatosis-and-xeno-sensing-receptors-in-heparg-cells
#6
Norman Tanner, Lisa Kubik, Claudia Luckert, Maria Thomas, Ute Hofmann, Ulrich M Zanger, Linda Bohmert, Alfonso Lampen, Albert Braeuning
Non-alcoholic fatty liver disease (NAFLD), characterized by triglyceride deposition in hepatocytes due to imbalanced lipid homeostasis, is of increasing concern in Western countries, with progression to non-alcoholic steatohepatitis (NASH), liver fibrosis, and cirrhosis. Previous studies suggest a complex, mutual influence of hepatic fat accumulation, NASH-related inflammatory mediators, and drug-sensing receptors regulating xenobiotic metabolism. Here, we investigated the suitability of human HepaRG hepatocarcinoma cells as a model for NAFLD and NASH...
January 12, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29329924/effects-of-dark-chocolate-on-endothelial-function-in-patients-with-non-alcoholic-steatohepatitis
#7
L Loffredo, F Baratta, P Ludovica, S Battaglia, R Carnevale, C Nocella, M Novo, G Pannitteri, F Ceci, F Angelico, F Violi, M Del Ben
BACKGROUND AND AIM: Oxidative stress plays a pivotal role in inducing endothelial dysfunction and progression from simple fatty liver steatosis (FLD) to non-alcoholic steatohepatitis (NASH). Polyphenols could reduce oxidative stress and restore endothelial function by inhibiting the nicotinamide-adenine-dinucleotide-phosphate (NADPH) oxidase isoform Nox2. The aim of this study was to assess endothelial function and oxidative stress in a population affected by simple FLD and NASH. Furthermore, we analysed the effect of high vs low content of cocoa polyphenols on endothelial function and oxidative stress in patients with NASH...
November 13, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29329215/dietary-supplement-of-large-yellow-tea-ameliorates-metabolic-syndrome-and-attenuates-hepatic-steatosis-in-db-db-mice
#8
Yun Teng, Daxiang Li, Ponmari Guruvaiah, Na Xu, Zhongwen Xie
Yellow tea has been widely recognized for its health benefits. However, its effects and mechanism are largely unknown. The current study investigated the mechanism of dietary supplements of large yellow tea and its effects on metabolic syndrome and the hepatic steatosis in male db/db mice. Our data showed that dietary supplements of large yellow tea and water extract significantly reduced water intake and food consumption, lowered the serum total and low-density lipoprotein cholesterol and triglyceride levels, and significantly reduced blood glucose level and increased glucose tolerance in db/db mice when compared to untreated db/db mice...
January 12, 2018: Nutrients
https://www.readbyqxmd.com/read/29327229/leopoldia-comosa-prevents-metabolic-disorders-in-rats-with-high-fat-diet-induced-obesity
#9
T Casacchia, F Scavello, C Rocca, M C Granieri, G Beretta, D Amelio, F Gelmini, A Spena, R Mazza, C C Toma, Tommaso Angelone, Giancarlo Statti, T Pasqua
PURPOSE: Obesity is the main feature of a complex illness known as metabolic syndrome. Anti-obesogenic therapies are often associated with side effects and represent a high cost in conventional pharmacological approaches. New strategies based on natural remedies are under continuous investigation. Leopoldia comosa (L.) Parl. (L. comosa) is a spontaneous plant with diuretic, anti-inflammatory and antioxidant properties. Recently, a hypoglycemic activity mediated by inhibition of carbohydrate digestion has been identified...
January 11, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29327118/effect-of-cpap-therapy-on-liver-disease-in-patients-with-osa-a-review
#10
REVIEW
Xin Liu, Yuyang Miao, Fan Wu, Tingting Du, Qiang Zhang
Obstructive sleep apnea (OSA) may play an important role in the progression of nonalcoholic fatty liver disease (NAFLD).The effect of continuous positive airway pressure (CPAP) treatment, the first-line therapy for OSA, on liver disease in OSA patients is still debated. We provide this review of previous studies to summarize the effects of CPAP treatment on liver disease in OSA patients in aspects of liver function, liver steatosis, fibrosis, and incidence of liver disease. CPAP treatment may be beneficial to liver disease in subjects with OSA independent of metabolic risk factors, but a sufficiently long therapeutic duration (perhaps greater than 3 months) may be needed to achieve these positive effects...
January 11, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29326427/severe-steatosis-induces-portal-hypertension-by-systemic-arterial-hyporeactivity-and-hepatic-vasoconstrictor-hyperreactivity-in-rats
#11
Denise Van der Graaff, Wilhelmus J Kwanten, Filip J Couturier, Jesse S Govaerts, Wim Verlinden, Isabel Brosius, Michiel D'Hondt, Ann Driessen, Benedicte Y De Winter, Joris G De Man, Peter P Michielsen, Sven M Francque
Non-alcoholic fatty liver disease (NAFLD) has become the most prevalent chronic liver disease. The presence of portal hypertension has been demonstrated in NAFLD prior to development of inflammation or fibrosis, and is a result of extrahepatic and intrahepatic factors, principally driven by vascular dysfunction. An increased intrahepatic vascular resistance potentially contributes to progression of NAFLD via intralobular hypoxia. However, the exact mechanisms underlying vascular dysfunction in NAFLD remain unknown...
January 11, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29325813/cardiac-function-and-exercise-adaptation-in-8-children-with-lpin1-mutations
#12
Antoine Legendre, Diala Khraiche, Phalla Ou, François-Xavier Mauvais, Marine Madrange, Anne-Sophie Guemann, Jean-Philippe Jais, Damien Bonnet, Yamina Hamel, Pascale de Lonlay
INTRODUCTION: Lipin-1 deficiency is a major cause of rhabdomyolysis that are precipitated by febrile illness. The prognosis is poor, with one-third of patients dying from cardiac arrest during a crisis episode. Apart from acute rhabdomyolysis, most patients are healthy, showing normal clinical and cardiac ultrasound parameters. PATIENTS AND METHODS: We report cardiac and exercise examinations of 8 children carrying two LPIN1 mutations. The examinations were performed outside of a myolysis episode, but one patient presented with fever during one examination...
January 5, 2018: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29325281/-value-of-hydrogen-proton-magnetic-resonance-spectroscopy-in-the-determination-of-liver-triglyceride-in-patients-with-fatty-liver-disease-and-its-influencing-factors
#13
H J Qu, L Wang, P H Jin, Q Gao, J X Zhou, Y Song, J Wang, Y M Jiang, L Gong, G Y Chen, J P Ding, J P Shi
Objective: To investigate the value of 1H-magnetic resonance spectroscopy ((1)H-MRS) in determining the content of liver triglyceride in patients with fatty liver disease (FLD), as well as its influencing factors. Methods: A total of 124 patients with nonalcoholic fatty liver disease (NAFLD), chronic hepatitis B (CHB), or hepatitis B complicated by FLD who underwent liver biopsy in the Affiliated Hospital of Hangzhou Normal University were enrolled, and the clinical data, serological markers, FibroScan results, and (1)H-MRS results were collected...
November 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/29323715/alleviation-of-palmitic-acid-induced-endoplasmic-reticulum-stress-by-augmenter-of-liver-regeneration-through-ip3r-controlled-ca2-release
#14
Wei-Chun Xiao, Zhang Jing, Si-Li Chen, Yi-Jun Shi, Fan Xiao, Wei An
The aberrant release of Ca2+ from the endoplasmic reticulum (ER) contributes to the onset of ER stress, which is closely related to the pathogenesis of non-alcoholic fatty liver disease. We previously reported that augmenter of liver regeneration (ALR) alleviates ER stress and protects hepatocytes from lipotoxicity. However, the link between ALR protection and the suppression of ER stress remains unclear. In this study, we investigated whether the protection against liver steatosis afforded by ALR is related to its inhibition of calcium overflow from the ER to the mitochondria...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29323466/design-and-synthesis-of-a-ring-simplified-pyripyropene-a-analogs-as-potent-and-selective-synthetic-soat2-inhibitors
#15
Masaki Ohtawa, Shiho Arima, Naoki Ichida, Tomiaki Terayama, Hironao Ohno, Takaya Yamazaki, Taichi Ohshiro, Noriko Sato, Satoshi Omura, Hiroshi Tomoda, Tohru Nagamitsu
Currently, pyripyropene A, which is isolated from the culture broth of Aspergillus fumigatus FO-1289, is the only compound known to strongly and selectively inhibit the isozyme sterol O-acyltransferase 2 (SOAT2). To aid in the development of new cholesterol-lowering or antiatherosclerotic agents, new A-ring simplified pyripyropene A analogs were designed and synthesized based on the total synthesis and the results of the structure-activity relationship studies of pyripyropene A achieved by our group. Among the analogs, two A-ring simplified pyripyropene A analogs exhibited equally efficient SOAT2 inhibitory activity compared with that of natural pyripyropene A...
January 11, 2018: ChemMedChem
https://www.readbyqxmd.com/read/29322544/role-of-bisphenol-a-as-environmental-factor-in-the-promotion-of-non-alcoholic-fatty-liver-disease-in%C3%A2-vitro-and-clinical-study
#16
M Dallio, M Masarone, S Errico, A G Gravina, C Nicolucci, R Di Sarno, L Gionti, C Tuccillo, M Persico, P Stiuso, N Diano, C Loguercio, A Federico
BACKGROUND: Bisphenol A is an endocrine disrupting chemical associated with type 2 diabetes mellitus (T2DM), cardiovascular disease and liver enzyme abnormalities. AIM: To evaluate bisphenol A plasma and urine levels in non-alcoholic fatty liver disease (NAFLD) patients compared to healthy subjects. Furthermore, we evaluated, in human HepG2 cells, the effects of exposure to different concentrations of bisphenol A on both oxidative stress induction and cell proliferation...
January 11, 2018: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29321963/a-critical-role-of-hepatitis-b-virus-polymerase-in-cirrhosis-hepatocellular-carcinoma-and-steatosis
#17
Hea-Jong Chung, Xiao Chen, Yang Yu, Heui-Kwan Lee, Chang Ho Song, Han Choe, Seungkoo Lee, Hyeon-Jin Kim, Seong-Tshool Hong
Hepatitis B is one of the most common infectious diseases in the world; more than 350 million people are carriers of hepatitis B virus (HBV). Chronic HBV infection (CHB) leads to liver diseases such as cirrhosis, hepatocellular carcinoma (HCC), and steatosis. Despite its seriousness in terms of public health, the pathogenic mechanism of how CHB leads to liver diseases, especially cirrhosis and steatosis, remains unclear. We studied the role of HBV polymerase (HBp) reverse transcriptase (RT) activity in association with the pathogenesis of liver diseases in CHB by developing transgenic mice expressing HBp or the RT domain of HBp...
January 2018: FEBS Open Bio
https://www.readbyqxmd.com/read/29321172/modest-decreases-in-endogenous-all-trans-retinoic-acid-produced-by-a-mouse-rdh10-heterozygote-provoke-major-abnormalities-in-adipogenesis-and-lipid-metabolism
#18
Di Yang, Marta G Vuckovic, Carolyn P Smullin, Myeongcheol Kim, Christabel Pui-See Lo, Emily Devericks, Hong Sik Yoo, Milena Tintcheva, Yinghua Deng, Joseph L Napoli
Pharmacological dosing of all-trans-retinoic acid (atRA) controls adiposity in rodents by inhibiting adipogenesis and inducing fatty acid oxidation. Retinol dehydrogenases (Rdh) catalyze the first reaction that activate retinol into atRA. This study examined post-natal contributions of Rdh10 to atRA biosynthesis and physiological functions of endogenous atRA. Embryonic fibroblasts from Rdh10 heterozygote hypomorphs or with a total Rdh10 knockout exhibit decreased atRA biosynthesis and escalated adipogenesis...
January 10, 2018: Diabetes
https://www.readbyqxmd.com/read/29321044/three-unreported-cases-of-tmem199-cdg-a-rare-genetic-liver-disease-with-abnormal-glycosylation
#19
Pietro Vajro, Katarzyna Zielinska, Bobby G Ng, Marco Maccarana, Per Bengtson, Marco Poeta, Claudia Mandato, Elisa D'Acunto, Hudson H Freeze, Erik A Eklund
BACKGROUND: TMEM199 deficiency was recently shown in four patients to cause liver disease with steatosis, elevated serum transaminases, cholesterol and alkaline phosphatase and abnormal protein glycosylation. There is no information on the long-term outcome in this disorder. RESULTS: We here present three novel patients with TMEM199-CDG. All three patients carried the same set of mutations (c.13-14delTT (p.Ser4Serfs*30) and c.92G > C (p.Arg31Pro), despite only two were related (siblings)...
January 10, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29320745/the-foxo1-inducible-transcriptional-repressor-zfp125-causes-hepatic-steatosis-and-hypercholesterolemia
#20
Gustavo W Fernandes, Barbara M L C Bocco, Tatiana L Fonseca, Elizabeth A McAninch, Sungro Jo, Lattoya J Lartey, InSug O-Sullivan, Terry G Unterman, Nailliw Z Preite, Robin M Voigt, Christopher B Forsyth, Ali Keshavarzian, Richárd Sinkó, Allison B Goldfine, Mary E Patti, Miriam O Ribeiro, Balázs Gereben, Antonio C Bianco
Liver-specific disruption of the type 2 deiodinase gene (Alb-D2KO) results in resistance to both diet-induced obesity and liver steatosis in mice. Here, we report that this is explained by an ∼60% reduction in liver zinc-finger protein-125 (Zfp125) expression. Zfp125 is a Foxo1-inducible transcriptional repressor that causes lipid accumulation in the AML12 mouse hepatic cell line and liver steatosis in mice by reducing liver secretion of triglycerides and hepatocyte efflux of cholesterol. Zfp125 acts by repressing 18 genes involved in lipoprotein structure, lipid binding, and transport...
January 9, 2018: Cell Reports
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