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https://www.readbyqxmd.com/read/28092655/circadian-and-upr-dependent-control-of-cpeb4-mediates-a-translational-response-to-counteract-hepatic-steatosis-under-er-stress
#1
Carlos Maillo, Judit Martín, David Sebastián, Maribel Hernández-Alvarez, Mar García-Rocha, Oscar Reina, Antonio Zorzano, Mercedes Fernandez, Raúl Méndez
The cytoplasmic polyadenylation element-binding (CPEB) proteins regulate pre-mRNA processing and translation of CPE-containing mRNAs in early embryonic development and synaptic activity. However, specific functions in adult organisms are poorly understood. Here we show that CPEB4 is required for adaptation to high-fat-diet- and ageing-induced endoplasmic reticulum (ER) stress, and subsequent hepatosteatosis. Stress-activated liver CPEB4 expression is dual-mode regulated. First, Cpeb4 mRNA transcription is controlled by the circadian clock, and then its translation is regulated by the unfolded protein response (UPR) through upstream open reading frames within the 5'UTR...
January 16, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28092182/an-estrogen-receptor-%C3%AE-selective-agonist-inhibits-non-alcoholic-steatohepatitis-in-preclinical-models-by-regulating-bile-acid-and-xenobiotic-receptors
#2
Suriyan Ponnusamy, Quynh T Tran, Thirumagal Thiyagarajan, Duane D Miller, Dave Bridges, Ramesh Narayanan
Non-alcoholic steatohepatitis (NASH) affects 8-10 million people in the US and up to 75% of obese individuals. Despite this, there are no approved oral therapeutics to treat NASH and therefore the need for novel approaches exists. The estrogen receptor β (ER-β)-selective agonist, β-LGND2, inhibits body weight and white adipose tissue, and increases metabolism, resulting in higher energy expenditure and thermogenesis. Due to favorable effects of β-LGND2 on obesity, we hypothesized that β-LGND2 will prevent NASH directly by reducing lipid accumulation in the liver or indirectly by favorably changing body composition...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28089623/which-treatment-for-type-2-diabetes-associated-with-non-alcoholic-fatty-liver-disease
#3
REVIEW
Arianna Mazzotti, Maria Turchese Caletti, Francesca Marchignoli, Giulia Forlani, Giulio Marchesini
Type 2 diabetes (T2DM) and nonalcoholic fatty liver disease (NAFLD) are highly prevalent in the community, and share common pathogenic mechanisms. There is also evidence that T2DM may be favored by hepatic fat accumulation; in turn the presence of T2DM is a risk factor for liver disease progression. The treatment of T2DM has considerably changed in the past few years; new drug classes, promoting glucose-lowering through mechanisms different from classical insulin-sensitizing or insulin-secreting action, have been added to continuing lifestyle intervention...
December 30, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28089502/an-extended-fatty-liver-index-to-predict-non-alcoholic-fatty-liver-disease
#4
K Kantartzis, I Rettig, H Staiger, J Machann, F Schick, L Scheja, A Gastaldelli, E Bugianesi, A Peter, M B Schulze, A Fritsche, H-U Häring, N Stefan
BACKGROUND: In clinical practice, there is a strong interest in non-invasive markers of non-alcoholic fatty liver disease (NAFLD). Our hypothesis was that the fold-change in plasma triglycerides (TG) during a 2-h oral glucose tolerance test (fold-change TGOGTT) in concert with blood glucose and lipid parameters, and the rs738409 C>G single nucleotide polymorphism (SNP) in PNPLA3 might improve the power of the widely used fatty liver index (FLI) to predict NAFLD. METHODS: The liver fat content of 330 subjects was quantified by (1)H-magnetic resonance spectroscopy...
January 12, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28089429/diagnosis-and-quantification-of-fibrosis-steatosis-and-hepatic-siderosis-through-multiparametric-magnetic-resonance-imaging
#5
M Stoopen-Rometti, E R Encinas-Escobar, C R Ramirez-Carmona, E Wolpert-Barraza, E Kimura-Hayama, L A Sosa-Lozano, R Favila, Y Kimura-Fujikami, J A Saavedra-Abril, A Loaeza-Del Castillo
BACKGROUND: The presence of liver fibrosis is the common denominator in numerous chronic liver diseases that can progress to fibrosis and hepatocellular carcinoma. Most important, with respect to frequency, are viral hepatitis and non-alcoholic fatty liver disease, the prevalence of which is increasing in epidemic proportions. Liver biopsy, albeit imperfect, continues to be the criterion standard, but in many clinical situations tends to be replaced with noninvasive imaging methods. OBJECTIVES: The aim of the present article was to describe our imaging department experience with magnetic resonance elastography and to analyze and discuss recently published results in gastroenterology, hepatology, and radiology from other authors in the literature, complemented with a PubMed search covering the last 10 years...
January 12, 2017: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/28086768/probiotic-mixture-improves-fatty-liver-disease-by-virtue-of-its-action-on-lipid-profiles-leptin-and-inflammatory-biomarkers
#6
Hessah Mohammed Al-Muzafar, Kamal Adel Amin
BACKGROUND: A high fat diet has an essential role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD). This condition is characterized by hepatic fat accumulation (steatosis) and is associated with obesity, diabetes, and fibrosis or cirrhosis of the liver. Probiotics may be useful in the treatment of steatosis. This study examined the effects of an ingested probiotic formulation on the lipid profiles, liver functions, leptin levels, and inflammatory marker levels of rats with NAFLD that had been induced via high fat and sucrose diet (HFSD)...
January 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28077863/what-have-human-experimental-overfeeding-studies-taught-us-about-adipose-tissue-expansion-and-susceptibility-to-obesity-and-metabolic-complications
#7
REVIEW
D J Cuthbertson, T Steele, J P Wilding, J C G Halford, J A Harrold, M Hamer, F Karpe
Overfeeding experiments, in which we impose short-term positive energy balance, help unravel the cellular, physiological and behavioural adaptations to nutrient excess. These studies mimic longer-term mismatched energy expenditure and intake. There is considerable inter-individual heterogeneity in the magnitude of weight gain when exposed to similar relative caloric excess reflecting variable activation of compensatory adaptive mechanisms. Significantly, given similar relative weight gain, individuals may be protected from/predisposed to metabolic complications (insulin resistance, dyslipidaemia, hypertension), non-alcoholic fatty liver disease and cardiovascular disease...
January 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28076416/the-ccr2-inhibitor-propagermanium-attenuates-diet-induced-insulin-resistance-adipose-tissue-inflammation-and-non-alcoholic-steatohepatitis
#8
Petra Mulder, Anita M van den Hoek, Robert Kleemann
BACKGROUND AND AIM: Obese patients with chronic inflammation in white adipose tissue (WAT) have an increased risk of developing non-alcoholic steatohepatitis (NASH). The C-C chemokine receptor-2 (CCR2) has a crucial role in the recruitment of immune cells to WAT and liver, thereby promoting the inflammatory component of the disease. Herein, we examined whether intervention with propagermanium, an inhibitor of CCR2, would attenuate tissue inflammation and NASH development. METHODS: Male C57BL/6J mice received a high-fat diet (HFD) for 0, 6, 12 and 24 weeks to characterize the development of early disease symptoms of NASH, i...
2017: PloS One
https://www.readbyqxmd.com/read/28069746/non-alcoholic-fatty-pancreas-disease
#9
REVIEW
Tamara Alempijevic, Sanja Dragasevic, Simon Zec, Dragan Popovic, Tomica Milosavljevic
Obesity is a growing problem worldwide and disorders associated with excess body fat including the metabolic syndrome, type 2 diabetes mellitus (T2DM), cardiovascular disease and malignant neoplasms are becoming a major cause of morbidity and mortality. Over the past decade, a vast amount of research has furthered our understanding of non-alcoholic fatty liver disease; however, only recently pancreatic fat infiltration is coming to the forefront of investigation. Termed non-alcoholic fatty pancreas disease (NAFPD), it is becoming evident that it has important associations with other diseases of obesity...
January 9, 2017: Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28067024/treatment-with-alpha-galactosylceramide-protects-mice-from-early-onset-of-non-alcoholic-steatohepatitis-role-of-intestinal-barrier-function
#10
Anna Janina Engstler, Cathrin Sellmann, Cheng Jun Jin, Annette Brandt, Kathleen Herz, Josephine Priebs, Ina Bergheim
SCOPE: The role of invariant natural killer T cells in the development of non-alcoholic steatohepatitis (NASH) has not yet been fully understood. Here, the effect of the invariant natural killer T cell activator alpha-galactosylceramide (αGalCer) on the development of non-alcoholic fatty liver disease and intestinal barrier function was assessed in a mouse model of early Western-style diet (WSD)-induced NASH. METHODS AND RESULTS: Female C57BL/6J mice were either fed a liquid control diet or a liquid fructose-enriched WSD for 6 weeks while being treated 3-times weekly with αGalCer (2 μg i...
January 9, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28064372/effects-of-bariatric-surgery-on-non-alcoholic-fatty-liver-disease-magnetic-resonance-imaging-is-an-effective-non-invasive-method-to-evaluate-changes-in-the-liver-fat-fraction
#11
Dennis M Hedderich, Till Hasenberg, Stefan Haneder, Stefan O Schoenberg, Özlem Kücükoglu, Ali Canbay, Mirko Otto
INTRODUCTION: Non-alcoholic fatty liver disease (NAFLD) is considered the most common liver disease worldwide and is highly associated with obesity. The prevalences of both conditions have markedly increased in the Western civilization. Bariatric surgery is the most effective treatment for morbid obesity and its comorbidities such as NAFLD. OBJECTIVES: Measure postoperative liver fat fraction (LFF) in bariatric patients by using in-opposed-phase MRI, a widely available clinical tool validated for the quantification of liver fat METHODS: Retrospective analyses of participants, who underwent laparoscopic Roux-Y-gastric-bypass (17) or laparoscopic sleeve gastrectomy (2) were performed using magnetic resonance imaging (MRI), bioelectrical impedance analysis (BIA), and anthropometric measurements 1 day before surgery, as well as 6, 12, and 24 weeks after surgery, LFF was calculated from fat-only and water-only MR images...
January 7, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28063601/bone-marrow-fat-content-is-correlated-with-hepatic-fat-content-in-paediatric-non-alcoholic-fatty-liver-disease
#12
N Y Yu, T Wolfson, M S Middleton, G Hamilton, A Gamst, J E Angeles, J B Schwimmer, C B Sirlin
AIM: To investigate the relationship between bone marrow fat content and hepatic fat content in children with known or suspected non-alcoholic fatty liver disease (NAFLD). MATERIALS AND METHODS: This was an institutional review board-approved, Health Insurance Portability and Accountability Act (HIPAA)-compliant, cross-sectional, prospective analysis of data collected between October 2010 to March 2013 in 125 children with known or suspected NAFLD. Written informed consent was obtained for same-day research magnetic resonance imaging (MRI) of the lumbar spine, liver, and abdominal adiposity...
January 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28063004/tubulin-alpha-8-is-expressed-in-hepatic-stellate-cells-and-is-induced-in-transformed-hepatocytes
#13
Lisa Rein-Fischboeck, Rebekka Pohl, Elisabeth M Haberl, Sebastian Zimny, Maximilian Neumann, Kristina Eisinger, Thomas S Weiss, Sabrina Krautbauer, Christa Buechler
Tubulin alpha 8 (TUBA8) is highly abundant in murine liver tumors suggesting a role in hepatocellular carcinoma (HCC). Non-alcoholic steatohepatitis (NASH) is a risk factor for HCC. In mice that are fed with a methionine-choline deficient diet for two weeks to induce advanced murine NASH, we do see increased hepatic levels of TUBA8 protein. In animals given a high-fat diet for 14 weeks or an atherogenic diet for 12 weeks, hepatic TUBA8 is unchanged. TUBA8 is highly expressed in human hepatic stellate cells (HSC) and co-localizes with the HSC marker desmin in the murine liver...
January 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28062263/the-natural-history-of-streptozotocin-stimulated-non-alcoholic-steatohepatitis-mice-followed-by-gd-eob-dtpa-enhanced-mri-comparison-with-simple-steatosis-mice
#14
Hiroyuki Akai, Shigeru Kiryu, Yasunori Ohta, Koichiro Yasaka, Yoshiyasu Nakano, Yusuke Inoue, Kuni Ohtomo
PURPOSE: To clarify the development of HCC, temporal change of steatosis and Gd-EOB-DTPA enhancement of non-alcoholic steatohepatitis (NASH) model mice by magnetic resonance imaging (MRI). MATERIALS AND METHODS: All animal experiments were approved by the institution's Animal Research Committee. MRI was performed on six NASH and six simple steatosis (SS) model mice every 2weeks from the ages of 8weeks to 16weeks. The sequential changes in the number and size of the focal liver lesions detected on Gd-EOB-DTPA-enhanced MRI were evaluated...
January 3, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28058076/non-alcoholic-fatty-pancreatic-disease-a-review-of-literature
#15
REVIEW
Hassan Tariq, Suresh Nayudu, Sai Akella, Mariela Glandt, Sridhar Chilimuri
There is an epidemic of obesity worldwide. The prevalence of obesity has doubled over the last three decades. Obesity, especially abdominal obesity is associated with insulin resistance that can lead to pancreatic steatosis and non-alcoholic fatty pancreatic disease (NAFPD). NAFPD describes a phenotype entity ranging from deposition of fat in the pancreas to pancreatic inflammation, and resultant fibrosis, which is similar to that of non-alcoholic fatty liver disease (NAFLD). NAFPD may represent a meaningful manifestation of metabolic syndrome...
December 2016: Gastroenterology Research
https://www.readbyqxmd.com/read/28053201/evidence-that-supports-the-prescription-of-low-carbohydrate-high-fat-diets-a-narrative-review
#16
Timothy David Noakes, Johann Windt
Low-carbohydrate high-fat (LCHF) diets are a highly contentious current topic in nutrition. This narrative review aims to provide clinicians with a broad overview of the effects of LCHF diets on body weight, glycaemic control and cardiovascular risk factors while addressing some common concerns and misconceptions. Blood total cholesterol and LDL-cholesterol concentrations show a variable, highly individual response to LCHF diets, and should be monitored in patients adhering to this diet. In contrast, available evidence from clinical and preclinical studies indicates that LCHF diets consistently improve all other markers of cardiovascular risk-lowering elevated blood glucose, insulin, triglyceride, ApoB and saturated fat (especially palmitoleic acid) concentrations, reducing small dense LDL particle numbers, glycated haemoglobin (HbA1c) levels, blood pressure and body weight while increasing low HDL-cholesterol concentrations and reversing non-alcoholic fatty liver disease (NAFLD)...
January 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28048818/su-f-i-65-fatty-acid-quantification-in-high-fat-diet-induced-abnormal-intrahepatic-triglyceride-storage-using-internal-standard-method-at-3-0-t
#17
K-H Song, C-H Yoo, S-I Lim, B-Y Choe
PURPOSE: The objective of this study was to determine the metabolic changes in a rat model of high-fat-diet-induced non-alcoholic fatty liver disease (NAFLD) by using single-voxel 1H-MRS with a 3.0 T MRI scanner. METHODS: The examination were performed on a 3.0T scanner using a 4-channel animal coil for higher resolution. This method used point-resolved spectroscopy (PRESS) (repetition time (TR)/echo time (TE) = 6000/35 ms; number of signal averages (NSA) = 64)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28030556/hepatocyte-hypoxia-inducible-factor-1-mediates-the-development-of-liver-fibrosis-in-a-mouse-model-of-nonalcoholic-fatty-liver-disease
#18
Omar A Mesarwi, Mi-Kyung Shin, Shannon Bevans-Fonti, Christina Schlesinger, Janet Shaw, Vsevolod Y Polotsky
BACKGROUND: Obstructive sleep apnea (OSA) is associated with the progression of non-alcoholic fatty liver disease (NAFLD) to steatohepatitis and fibrosis. This progression correlates with the severity of OSA-associated hypoxia. In mice with diet induced obesity, hepatic steatosis leads to liver tissue hypoxia, which worsens with exposure to intermittent hypoxia. Emerging data has implicated hepatocyte cell signaling as an important factor in hepatic fibrogenesis. We hypothesized that hepatocyte specific knockout of the oxygen sensing α subunit of hypoxia inducible factor-1 (HIF-1), a master regulator of the global response to hypoxia, may be protective against the development of liver fibrosis...
2016: PloS One
https://www.readbyqxmd.com/read/28028366/hepatoprotective-and-antioxidant-effects-of-lycopene-on-non-alcoholic-fatty-liver-disease-in-rat
#19
Wei Jiang, Mei-Hua Guo, Xin Hai
AIM: To evaluate the hepatoprotective effect of lycopene (Ly) on non-alcoholic fatty liver disease (NAFLD) in rat. METHODS: A rat model of NAFLD was first established by feeding a high-fat diet for 14 wk. Sixty-five rats were randomly divided into normal group, model group and Ly treatment groups. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), triglycerides (TG), total cholesterol (TC) in serum and low density lipoprotein-cholesterol (LDL-C), high density lipoprotein-cholesterol (HDL-C), free fatty acid (FFA), malondialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH) in liver tissue were evaluated, respectively...
December 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28027788/non-alcoholic-fatty-liver-disease-and-subclinical-atherosclerosis-a-comparison-of-metabolically-versus-genetically-driven-excess-fat-hepatic-storage
#20
Alessia Di Costanzo, Laura D'Erasmo, Licia Polimeni, Francesco Baratta, Paola Coletta, Michele Di Martino, Lorenzo Loffredo, Ludovica Perri, Fabrizio Ceci, Anna Montali, Gabriella Girelli, Bruna De Masi, Antonio Angeloni, Carlo Catalano, Marianna Maranghi, Maria Del Ben, Francesco Angelico, Marcello Arca
BACKGROUND AND AIMS: Non-alcoholic fatty liver disease (NAFLD) is frequently associated with atherosclerosis. However, it is unclear whether this association is related to excess fat liver storage per se or to metabolic abnormalities that typically accompany NAFLD. To investigate this, we compared individuals with hepatic steatosis driven by metabolic disturbances to those with hepatic steatosis associated with the rs738409 GG genotype in the patatin-like phospholipase domain-containing 3 gene (PNPLA3)...
December 21, 2016: Atherosclerosis
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