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liver steatosis

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https://www.readbyqxmd.com/read/29031242/dietary-creatine-supplementation-lowers-hepatic-triacylglycerol-by-increasing-lipoprotein-secretion-in-rats-fed-high-fat-diet
#1
Robin P da Silva, Kelly-Ann Leonard, René L Jacobs
Recent studies have shown that dietary creatine supplementation can prevent lipid accumulation in the liver. Creatine is a small molecule that plays a large role in energy metabolism, but since the enzyme creatine kinase is not present in the liver, the classical role in energy metabolism does not hold in this tissue. Fat accumulation in the liver can lead to the development of nonalcoholic fatty liver disease (NAFLD), a progressive disease that is prevalent in humans. We have previously reported that creatine can directly influence lipid metabolism in cell culture to promote lipid secretion and oxidation...
September 1, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29028831/short-term-vitamin-e-treatment-impairs-reactive-oxygen-species-signaling-required-for-adipose-tissue-expansion-resulting-in-fatty-liver-and-insulin-resistance-in-obese-mice
#2
Martin Alcala, Maria Calderon-Dominguez, Dolors Serra, Laura Herrero, Maria P Ramos, Marta Viana
OBJECTIVES: The use of antioxidant therapy in the treatment of oxidative stress-related diseases such as cardiovascular disease, diabetes or obesity remains controversial. Our aim is to demonstrate that antioxidant supplementation may promote negative effects if used before the establishment of oxidative stress due to a reduced ROS generation under physiological levels, in a mice model of obesity. METHODS: C57BL/6J mice were fed with a high-fat diet for 14 weeks, with (OE group) or without (O group) vitamin E supplementation...
2017: PloS One
https://www.readbyqxmd.com/read/29028128/diagnostic-accuracy-of-magnetic-resonance-imaging-hepatic-proton-density-fat-fraction-in-pediatric-nonalcoholic-fatty-liver-disease
#3
Michael S Middleton, Mark L Van Natta, Elhamy R Heba, Adina Alazraki, Andrew T Trout, Prakash Masand, Elizabeth M Brunt, David E Kleiner, Edward Doo, James Tonascia, Joel E Lavine, Wei Shen, Gavin Hamilton, Jeffrey B Schwimmer, Claude B Sirlin
We assessed the performance of magnetic resonance imaging (MRI) proton density fat fraction (PDFF) in children to stratify hepatic steatosis grade before and after treatment in the Cysteamine Bitartrate Delayed-Release for the Treatment of Nonalcoholic Fatty Liver Disease in Children (CyNCh) trial, using centrally-scored histology as reference. Participants had multi-echo 1.5T or 3T MRI on scanners from three manufacturers. Of 169 enrolled children, 110 (65%) and 83 (49%) had MRI and liver biopsy at baseline and at end-of-treatment (EOT; 52-weeks), respectively...
October 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29025734/dietary-copper-fructose-interactions-alter-gut-microbial-activity-in-male-rats
#4
Ming Song, Xiaohong Li, Xiang Zhang, Hongxue Shi, Miriam B Vos, Xiaoli Wei, Yuhua Wang, Hong Gao, Eric C Rouchka, Xinmin Yin, Zhanxiang Zhou, Russell A Prough, Matthew C Cave, Craig J McClain
Dietary copper-fructose interactions contribute to the development of nonalcoholic fatty liver disease (NAFLD). Gut microbiota play critical roles in the pathogenesis of NAFLD. The aim of this study was to determine the effect of different dietary doses of copper and their interactions with high fructose on gut microbiome. Male weanling Sprague-Dawley rats were fed diets with adequate copper (6 ppm, CuA), marginal copper (1.5 ppm, CuM) (low-copper) or supplemented copper (20 ppm, CuS) (high-copper) for 4 weeks...
October 12, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29025246/vaspin-mrna-levels-in-the-liver-of-morbidly-obese-women-with-nonalcoholic-fatty-liver-disease
#5
Marek Waluga, Michał Kukla, Michał Żorniak, Marta Grabiec, Maciej Kajor, Michał Dyaczyński, Grzegorz Kowalski, Dominika Żądło, Agnieszka Berdowska, Rafał Kotulski, Rafał J Bułdak, Tomasz Sawczyn, Ewa Waluga, Paweł Olczyk, Marek Hartleb
The aim of this study was to evaluate hepatic vaspin mRNA in morbidly obese women with nonalcoholic fatty liver disease (NAFLD) and to look for its relationships with metabolic and histopathological features. The study included 56 severely obese women who underwent intraoperative wedge liver biopsy during bariatric surgery. Hepatic vaspin mRNA was assessed by quantitative real-time PCR. Vaspin mRNA found in all included patients was markedly higher in patients with body mass index (BMI) ≥ 40 kg/m2 (4.59 ±3...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/29025245/hepatic-chemerin-mrna-in-morbidly-obese-patients-with-nonalcoholic-fatty-liver-disease
#6
Maciej Kajor, Michał Kukla, Marek Waluga, Łukasz Liszka, Michał Dyaczyński, Grzegorz Kowalski, Dominika Żądło, Agnieszka Berdowska, Mateusz Chapuła, Anna Kostrząb-Zdebel, Rafał J Bułdak, Tomasz Sawczyn, Marek Hartleb
The aim of this study was to investigate hepatic chemerin mRNA, serum chemerin concentration, and immunohistochemical staining for chemerin and and chemokine receptor-like 1 (CMKLR1) in hepatic tissue in 56 morbidly obese women with nonalcoholic fatty liver disease (NAFLD) and to search for a relationship with metabolic and histopathological features. Chemerin mRNA was assessed by quantitative real-time PCR, chemerin, and CMKLR1 immunohistochemical expression with specific antibodies, while serum chemerin concentration was assessed with commercially available enzyme-linked immunosorbent assays...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/29024407/ghrelin-deletion-protects-against-age-associated-hepatic-steatosis-by-downregulating-the-c-ebp%C3%AE-p300-dgat1-pathway
#7
Bobby Guillory, Nicole Jawanmardi, Polina Iakova, Barbara Anderson, Pu Zang, Nikolai A Timchenko, Jose M Garcia
Nonalcoholic fatty liver disease (NAFLD) is the most common liver disease worldwide. NAFLD usually begins as low-grade hepatic steatosis which further progresses in an age-dependent manner to nonalcoholic steatohepatitis (NASH), fibrosis, cirrhosis, and hepatocellular carcinoma in some patients. Ghrelin is a hormone known to promote adiposity in rodents and humans, but its potential role in hepatic steatosis is unknown. We hypothesized that genetic ghrelin deletion will protect against the development of age-related hepatic steatosis...
October 12, 2017: Aging Cell
https://www.readbyqxmd.com/read/29023845/aqueous-extract-of-gynura-bicolor-attenuated-hepatic-steatosis-glycative-oxidative-and-inflammatory-injury-induced-by-chronic-ethanol-consumption-in-mice
#8
Mei-Chin Yin, Zhi-Hong Wang, Wen-Hu Liu, Mei-Chin Mong
Gynura bicolor leaf aqueous extract (GAE) is rich in phytochemicals including phenolic acids, flavonoids, carotenoids, and anthocyanins. Effects of GAE upon hepatic injury in mice with chronic ethanol intake were examined. Lieber-DeCarli liquid diet with ethanol was used to induce hepatic lipid accumulation, oxidative, glycative, and inflammatory injury. GAE at 0.25% or 0.5% was added in feeds, and supplied to mice consumed Lieber-DeCarli liquid diet with ethanol for 6 wk. Blood and liver were collected for analyses...
October 12, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29023819/non-alcoholic-fatty-liver-disease-impairs-expression-of-the-type-ii-inositol-1-4-5-trisphosphate-receptor
#9
Tanaporn Khamphaya, Natsasi Chukijrungroat, Vitoon Saengsirisuwan, Kisha A Mitchell-Richards, Marie E Robert, Albert Mennone, Michael H Nathanson, Jittima Weerachayaphorn
Non-alcoholic fatty liver disease (NAFLD) is the most prevalent liver disease worldwide. It may result in several types of liver problems including impaired liver regeneration, but the mechanism for this is unknown. Because liver regeneration depends on calcium signaling, we examined the effects of NAFLD on expression of the type II inositol 1,4,5-trisphosphate receptor (ITPR2), the principle calcium release channel in hepatocytes. ITPR2 promoter activity was measured in Huh7 and HepG2 cells. ITPR2 and c-Jun protein levels were evaluated in Huh7 cells, in liver tissue from a rat model of NAFLD and in liver biopsy specimens of patients with simple steatosis and non-alcoholic steatohepatitis (NASH)...
October 10, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29022907/p38%C3%AE-mapk-antagonizing-jnk-to-control-the-hepatic-fat-accumulation-in-pediatric-patients-onset-intestinal-failure
#10
Yongtao Xiao, Jun Wang, Weihui Yan, Kejun Zhou, Yi Cao, Wei Cai
The p38α mitogen-activated protein kinase (MAPK) has been related to gluconeogenesis and lipid metabolism. However, the roles and related mechanisms of p38α MAPK in intestinal failure (IF)-associated liver steatosis remained poor understood. Here, our experimental evidence suggested that p38α MAPK significantly suppressed the fat accumulation in livers of IF patients mainly through two mechanisms. On the one hand, p38α MAPK increased hepatic bile acid (BA) synthesis by upregulating the expression of the rate-limiting enzyme cholesterol 7-α-hydroxylase (CYP7A1) and peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α), which in turn activated the transcription of the CYP7A1...
October 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29022777/feasibility-of-modified-dixon-mri-techniques-for-hepatic-fat-quantification-in-hepatic-disorders-validation-with-mrs-and-histology
#11
Bo-Kyeong Kang, Mimi Kim, Soon-Young Song, Dae Won Jun, Kiseok Jang
OBJECTIVE: To assess the feasibility of proton density fat fraction (PDFF) magnetic resonance imaging (MRI) for estimating hepatic fat fraction with magnetic resonance spectroscopy (MRS) and histology as references and to investigate intrahepatic fat distribution and variability. METHODS: Between November 2014 and September 2015, 85 adults (48 men, 47 women) who underwent MRI-PDFF (n=139), MRS-PDFF (n=49) and liver biopsy (n=29) were enrolled in this study. Data were compared using linear regression...
October 12, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29019564/the-impact-of-the-use-of-symbiotics-in-the-progression-of-nonalcoholic-fatty-liver-disease-in-a-rat-model
#12
Eliane Tagliari, Antonio Carlos Campos, Thais Andrade Costa-Casagrande, Paolo Rogério Salvalaggio
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is characterized by accumulation of intrahepatic lipid. The use of live microorganisms promotes beneficial effects; however, the use of symbiotic and its role in NAFLD is not yet fully understood. AIM: Verify if the symbiotic administration influences the occurrence and progression of NAFLD in rats, after induction of hepatic steatosis by high calorie diet. METHOD: Forty-five rats were divided into four groups: G1 (control); G2 (control+symbiotic); G3 (high calorie+symbiotic) and G4 (high calorie), and euthanized after 60 days of diet...
July 2017: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/29018509/circrna_0046367-prevents-hepatoxicity-of-lipid-peroxidation-an-inhibitory-role-against-hepatic-steatosis
#13
Xing-Ya Guo, Jian-Neng Chen, Fang Sun, Yu-Qin Wang, Qin Pan, Jian-Gao Fan
Hepatic steatosis reflects the miRNA-related pathological disorder with triglyceride accumulation and lipid peroxidation, which leads to nonalcoholic steatohepatitis, liver fibrosis/cirrhosis, and even hepatocellular carcinoma. Circular RNA (circRNA)/miRNA interaction reveals a novel layer of epigenetic regulation, yet the miRNA-targeting circRNA remains uncertain in hepatic steatosis. Here, we uncover circRNA_0046367 to be endogenous modulator of miR-34a that underlies hepatic steatosis. In contrast to its expression loss during the hepatocellular steatosis in vivo and in vitro, circRNA_0046367 normalization abolished miR-34a's inhibitory effect on peroxisome proliferator-activated receptor α (PPARα) via blocking the miRNA/mRNA interaction with miRNA response elements (MREs)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28994271/imaging-evaluation-of-non-alcoholic-fatty-liver-disease-focused-on-quantification
#14
Dong Ho Lee
Non-alcoholic fatty liver disease (NAFLD) has been an emerging major health problem, and the most common cause of chronic liver disease in Western countries. Traditionally, liver biopsy has been gold standard method for quantification of hepatic steatosis. However, its invasive nature with potential complication as well as measurement variability are major problem. Thus, various imaging studies have been used for evaluation of hepatic steatosis. Ultrasonography provides fairly good accuracy to detect moderate-to-severe degree hepatic steatosis, but limited accuracy for mild steatosis...
October 10, 2017: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28993411/sleeping-beauty-insertional-mutagenesis-in-mice-identifies-drivers-of-steatosis-associated-hepatic-tumor
#15
Barbara R Tschida, Nuri A Temiz, Timothy P Kuka, Lindsey A Lee, Jesse D Riordan, Carlos A Tierrablanca, Robert Hullsiek, Sandra Wagner, Wendy A Hudson, Michael A Linden, Khalid Amin, Pauline J Beckmann, Rachel A Heuer, Aaron L Sarver, Ju Dong Yang, Lewis R Roberts, Joseph H Nadeau, Adam J Dupuy, Vincent W Keng, David Largaespada
Hepatic steatosis is a strong risk factor for the development of hepatocellular carcinoma (HCC), yet little is known about the molecular pathology associated with this factor. In this study, we performed a forward genetic screen using Sleeping Beauty (SB) transposon insertional mutagenesis in mice treated to induce hepatic steatosis, and compared the results to human HCC data. In humans, we determined that steatosis increased the proportion of female HCC patients, a pattern also reflected in mice. Our genetic screen identified 203 candidate steatosis-associated HCC genes, many of which are altered in human HCC and are members of established HCC-driving signaling pathways...
October 9, 2017: Cancer Research
https://www.readbyqxmd.com/read/28993156/association-between-hemoglobin-glycation-index-and-hepatic-steatosis-in-non-diabetic-individuals
#16
Teresa Vanessa Fiorentino, Maria Adelaide Marini, Elena Succurro, Francesco Andreozzi, Angela Sciacqua, Marta Letizia Hribal, Francesco Perticone, Giorgio Sesti
AIMS: Hemoglobin glycation index (HGI), which is the difference between the observed value of HbA1 and the predicted HbA1c based on plasma glucose levels, represents a measure of the degree of non-enzymatic glycation of hemoglobin and it has been found to be positively associated with diabetic complications. Herein we investigated whether HGI is associated with hepatic steatosis and related biomarkers in subjects without diabetes. METHODS: 1120 White individuals without diabetes were stratified in quartiles according to HGI levels...
October 6, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28992470/the-potential-effects-of-efavirenz-on-oreochromis-mossambicus-after-acute-exposure
#17
L Robson, I E J Barnhoorn, G M Wagenaar
Antiretroviral drugs (ARVs) are hazardous therapeutic pharmaceuticals present in South African surface water. Efavirenz is an ARV commonly used in human immunodeficiency virus (HIV) treatment in South Africa. Although little is known about the toxic effects of efavirenz on fish health, threats of toxicity to the aquatic environment have been reported. Oreochromis mossambicus were exposed under controlled conditions to environmentally-relevant efavirenz concentrations (10.3ng/l) as measured in rivers that flow into the Nandoni Dam in the Vhembe District, South Africa...
October 2, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28992396/alcohol-feeding-in-mice-promotes-colonic-hyperpermeability-and-changes-in-colonic-organoid-stem-cell-fate
#18
Christopher B Forsyth, Maliha Shaikh, Faraz Bishehsari, Garth Swanson, Robin M Voigt, Hemraj Dodiya, Peter Wilkinson, Beata Samelco, Shiwen Song, Ali Keshavarzian
BACKGROUND: Alcohol increases intestinal permeability to pro-inflammatory microbial products that promote liver disease, even after a period of sobriety. We sought to test the hypothesis that alcohol affects intestinal stem cells using an in vivo model and ex vivo organoids generated from jejunum and colon from mice fed chronic alcohol. METHODS: Mice were fed a control or an alcohol diet. Intestinal permeability, liver steatosis/inflammation, and stool short chain fatty acids (SCFA) were measured...
October 9, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28991837/serum-osteocalcin-levels-in-children-with-nonalcoholic-fatty-liver-disease
#19
Saleh Amin, Doaa El Amrousy, Shaymaa Elrifaey, Rasha Gamal, Hossam Hodeib
OBJECTIVES: to investigate the relationship between osteocalcin and non alcoholic fatty liver disease (NAFLD) in obese children. METHOD: 60 obese children with NAFLD were taken as patient group and 60 non - NAFLD children with matches age, sex and BMI were taken as control group. Anthropometric measurements, abdominal ultrasonography for diagnosis and grading of NAFLD, and laboratory investigations in the form of liver function tests, lipid profile, fasting serum glucose and insulin, and serum osteocalcin levels were done for all children...
October 6, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28991530/combination-of-lc-ms-and-gc-ms-based-metabolomics-to-study-the-hepatotoxic-effect-of-realgar-nanoparticles-in-rats
#20
Mo-Han Zhang, Jia-Qing Chen, Hui-Min Guo, Rui-Ting Li, Yi-Qiao Gao, Yuan Tian, Zun-Jian Zhang, Yin Huang
Realgar nanoparticles (NPs) are increasingly used as therapeutic agents for their enhanced anti-proliferation effect and cytotoxicity on cancer cells. However, the alteration of particle size may enhance biological reactivity as well as toxicity. A LC/MS and GC/MS based metabolomics approach was employed to explore the mechanism of realgar NPs-induced hepatotoxicity and identify potential biomarkers. Male Sprague-Dawley rats were administrated intragastrically with realgar or realgar NPs at a dose of 1.0 g·kg(-1)·d(-1) for 28 days and toxic effects of realgar NPs on liver tissues were examined by biochemical indicator analysis and histopathologic examination...
September 2017: Chinese Journal of Natural Medicines
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