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https://www.readbyqxmd.com/read/28443847/the-impact-of-dietary-sn-2-palmitic-triacylglycerols-in-combination-with-docosahexaenoic-acid-or-arachidonic-acid-on-lipid-metabolism-and-host-faecal-microbiota-composition-in-sprague-dawley-rats
#1
Jianchun Wan, Songyou Hu, Jörg J Jacoby, Jie Liu, Yaqiong Zhang, Liangli Lucy Yu
Sn-2 palmitic acid triacylglycerols (sn2PA fat) and polyunsaturated fatty acids are thought to influence the metabolic status and intestinal bacterial population of the host. In this study, the impact of sn2PA fat in combination with DHA or ARA in the diet on lipid metabolism in the liver and faecal microbiota composition were investigated in rats fed diets containing sn2PA fat, 90% sn2PA fat + 10% DHA oil (wt%), or 90% sn2PA fat + 10% ARA oil (wt%). Tissue fatty acid composition was measured using gas chromatography (GC), whereas the faecal microbial composition was assessed using 16S rRNA high-throughput sequencing technology...
April 26, 2017: Food & Function
https://www.readbyqxmd.com/read/28437863/sirt3-acts-as-a-negative-regulator-of-autophagy-dictating-hepatocyte-susceptibility-to-lipotoxicity
#2
Songtao Li, Xiaobing Dou, Hua Ning, Qing Song, Wei Wei, Ximei Zhang, Chen Shen, Jiaxin Li, Changhao Sun, Zhenyuan Song
Lipotoxicity induced by saturated fatty acids (SFAs) plays a central role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD); however, the exact mechanism(s) remain to be fully elucidated. SIRT3 is an NAD(+) -dependent deacetylase primarily located inside mitochondria. In this study, we demonstrated that a SFAs-rich high-fat diet (HFD) was more detrimental to the liver than an isocaloric unsaturated FAs-rich HFD. Unexpectedly, SIRT3 expression/activity were significantly elevated in the livers of mice exposed to the SFAs-rich HFD...
April 24, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28437736/murine-diet-induced-obesity-remodels-cardiac-and-liver-mitochondrial-phospholipid-acyl-chains-with-differential-effects-on-respiratory-enzyme-activity
#3
E Madison Sullivan, Amy Fix, Miranda J Crouch, Genevieve C Sparagna, Tonya N Zeczycki, David A Brown, Saame Raza Shaikh
Cardiac phospholipids, notably cardiolipin, undergo acyl chain remodeling and/or loss of content in aging and cardiovascular diseases, which is postulated to mechanistically impair mitochondrial function. Less is known about how diet-induced obesity influences cardiac phospholipid acyl chain composition and thus mitochondrial responses. Here we first tested if a high fat diet remodeled murine cardiac mitochondrial phospholipid acyl chain composition and consequently disrupted membrane packing, supercomplex formation and respiratory enzyme activity...
April 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28431668/glp-1-receptor-agonists-in-nafld
#4
J-M Petit, B Vergès
Non-alcoholic fatty liver disease (NAFLD) is very common in patients with type 2 diabetes (T2D), with approximately two-thirds having a diagnosis of the disease. Currently, the only validated treatment for NAFLD is weight loss. A number of studies of animal models and human trials have evaluated the effects of glucagon-like peptide-1 receptor agonists (GLP-1RAs) on liver fat content and suggest that the treatment could represent a new alternative for NAFLD management. In this review, our focus is on the main studies regarding the effects of GLP-1RAs on NAFLD...
April 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28429080/effect-of-gpr84-deletion-on-obesity-and-diabetes-development-in-mice-fed-long-chain-or-medium-chain-fatty-acid-rich-diets
#5
Eugene Du Toit, Liam Browne, Helen Irving-Rodgers, Helen M Massa, Nicolette Fozzard, Michael P Jennings, Ian R Peak
PURPOSE: Although there is good evidence showing that diets rich in medium chain fatty acids (MCFAs) have less marked obesogenic and diabetogenic effects than diets rich in long chain fatty acids (LCFAs), the role of the pro-inflammatory, medium chain fatty acid receptor (GPR84) in the aetiology of obesity and glucose intolerance is not well characterised. We set out to determine whether GPR84 expression influences obesity and glucose intolerance susceptibility in MCFA and LCFA rich diet fed mice...
April 20, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28428027/fructose-intervention-for-12-weeks-does-not-impair-glycemic-control-or-incretin-hormone-responses-during-oral-glucose-or-mixed-meal-tests-in-obese-men
#6
N Matikainen, S Söderlund, E Björnson, L H Bogl, K H Pietiläinen, A Hakkarainen, N Lundbom, B Eliasson, S M Räsänen, A Rivellese, L Patti, A Prinster, G Riccardi, J-P Després, N Alméras, J J Holst, C F Deacon, J Borén, M-R Taskinen
BACKGROUND AND AIMS: Incretin hormones glucagon-like peptide (GLP)-1 and glucose-dependent insulinotropic polypeptide (GIP) are affected early on in the pathogenesis of metabolic syndrome and type 2 diabetes. Epidemiologic studies consistently link high fructose consumption to insulin resistance but whether fructose consumption impairs the incretin response remains unknown. METHODS AND RESULTS: As many as 66 obese (BMI 26-40 kg/m(2)) male subjects consumed fructose-sweetened beverages containing 75 g fructose/day for 12 weeks while continuing their usual lifestyle...
March 18, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
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/28422772/can-ultrasound-imaging-predict-the-success-of-an-experimental-steatofibrosis-model
#8
Rustu Turkay, Abdurrahman Fatih Aydin, Ilknur Bingul, Canan Kucukgergin, Isin Dogan-Ekici, Elif Hocaoglu, Ercan Inci, Baris Bakir, Mujdat Uysal
Our goal was to evaluate the role of ultrasound (US) imaging in an experimental 2-hit steatofibrosis rat model. Nineteen female Sprague-Dawley rats were divided into 2 groups: control group (n = 6) and high-fat diet carbontetrachloride (HFD-CCl4) group (n = 13) that was fed with HFD for 14 weeks. Ultrasound was performed to evaluate liver steatosis. The HFD-CCl4 group rats were divided further into 2 subgroups: HFD rats with liver steatosis [US (+) group; n = 6] and without steatosis [US (-) group; n = 7]. All rats in the subgroups were administered with CCl4...
April 19, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28417532/non-alcoholic-fatty-liver-disease-nafld-prevalence-and-its-metabolic-associations-in-patients-with-type-1-diabetes-and-type-2-diabetes
#9
Kenneth Cusi, Arun J Sanyal, Shuyu Zhang, Mark L Hartman, Juliana M Bue-Valleskey, Byron J Hoogwerf, Axel Haupt
We investigated non-alcoholic fatty liver disease (NAFLD) prevalence and its metabolic associations in patients with type 1 diabetes (T1D), and in insulin-naïve and insulin-treated patients with type 2 diabetes (T2D). Baseline data from patients who had liver fat content (LFC) evaluated by magnetic resonance imaging in 4 phase 3 studies of basal insulin peglispro (BIL) were analyzed. Associations of NAFLD with clinical characteristics, glycemic control and diabetes therapy were evaluated. The prevalence of NAFLD (defined as LFC ≥6%) was low in T1D (8...
April 17, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28413464/anti-climacterium-effects-of-pomegranate-concentrated-solutions-in-ovariectomized-ddy-mice
#10
Su Jin Kang, Beom Rak Choi, Seung Hee Kim, Hae Yeon Yi, Hye Rim Park, Chang Hyun Song, Sae Kwang Ku, Young Joon Lee
In the present study, the complex anti-climacterium potential of standardized pomegranate concentrated solution (PCS) was investigated using bilateral ovariectomy (OVX) female ddY mice. Changes in body weight and gain during experimental periods, food consumption, serum estradiol levels, total body and abdominal fat densities, abdominal fat pads, and uterus weights were observed, along with the histopathology of abdominal fat pads and uterus for anti-obesity and estrogenic effects. In addition, liver weights, serum aspartate aminotransferase (AST), alanine aminotransferase (ALT) levels, and histopathological inspections were performed to explore the hepato-protective effects...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28410969/characterization-and-mechanism-of-phosphoinositide-3-kinases-pi3ks-members-in-insulin-induced-changes-of-protein-metabolism-in-yellow-catfish-pelteobagrus-fulvidraco
#11
Mei-Qin Zhuo, Yan-Xiong Pan, Kun Wu, Yi-Huan Xu, Zhi Luo
In the present study, seven phosphoinositide 3-kinase (PI3K) members (PI3KCa, PI3KCb, PI3KCd, PI3KCg, PI3KC2a, PI3KC2b and PI3KC3, respectively) were isolated and characterized from yellow catfish Pelteobagrus fulvidraco, and their roles in insulin-induced changes of protein metabolism were determined. These seven PI3Ks can be divided into three classes, class I (including PI3KCa, PI3KCb, PI3KCd and PI3KCg), class II (including PI3KC2a and PI3KC2b) and class III (only including PI3KC3). Compared with mammals, all of these members share similar domain structure...
April 11, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28410667/comparative-effects-of-high-oleic-acid-vs-high-mixed-saturated-fatty-acid-obesogenic-diets-upon-pufa-metabolism-in-mice
#12
Matthew J Picklo, Joseph Idso, Drew R Seeger, Harold M Aukema, Eric J Murphy
Emerging evidence indicates that the fatty acid composition of obesogenic diets influences physiologic outcomes. There are scant data regarding how the content of non-essential fatty acids like monounsaturated fatty acids (MUFA) and saturated fatty acids (SFAs) impact the metabolism of polyunsaturated fatty acids (PUFAs). In this work, we tested the hypothesis that obesogenic diets enriched in oleic acid (OA; 18:1n-9) reduce polyunsaturated fatty acid (PUFA) levels vs an obesogenic diet enriched in SFAs. Adult male mice were fed for eight weeks either (1) a control 16% fat energy (en) diet with 5...
April 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28405243/transcriptomic-responses-of-the-liver-and-adipose-tissues-to-altered-carbohydrate-fat-ratio-in-diet-an-isoenergetic-study-in-young-rats
#13
Mitsuru Tanaka, Akihito Yasuoka, Manae Shimizu, Yoshikazu Saito, Kei Kumakura, Tomiko Asakura, Toshitada Nagai
BACKGROUND: To elucidate the effects of altered dietary carbohydrate and fat balance on liver and adipose tissue transcriptomes, 3-week-old rats were fed three kinds of diets: low-, moderate-, and high-fat diets (L, M, and H) containing a different ratio of carbohydrate-fat (C-F) (65:15, 60:20, and 35:45 in energy percent, respectively). METHODS: The rats consumed the diets for 9 weeks and were subjected to biochemical and DNA microarray analyses. RESULTS: The rats in the H-group exhibited lower serum triacylglycerol (TG) levels but higher liver TG and cholesterol content than rats in the L-group...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/28403840/variation-in-fat-content-between-liver-lobes-and-comparison-with-histopathological-scores-in-dairy-cows-with-fatty-liver
#14
C Gerspach, S Imhasly, R Klingler, M Hilbe, S Hartnack, M Ruetten
BACKGROUND: The assessment of a liver biopsy remains the gold standard for diagnosing and staging fatty liver in dairy cows, which is often necessary for diagnostic and research purposes. Accuracy of the diagnosis relays on the quality of the biopsy, the assumed representativeness of a small tissue sample for a disease process throughout the liver and accurate human evaluation of histologic specimens. The objective of the present study was to assess the distribution of triacylglycerol (TAG) infiltration throughout the parenchyma of livers with different degrees of fatty liver in dairy cows...
April 12, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28396939/fat-and-carbohydrate-content-in-the-diet-induces-drastic-changes-in-gene-expression-in-young-g%C3%A3-ttingen-minipigs
#15
Caroline M Junker Mentzel, Tainã Figueiredo Cardoso, Annika M J Lex, Dorte Bratbo Sørensen, Merete Fredholm, Susanna Cirera
In human health, there is interest in developing specific diets to reduce body weight. These studies are mainly focused on phenotypic changes induced in blood measurements, i.e., triglycerides, HDL, LDL, and insulin, and on physical changes, i.e., body weight and BMI. To evaluate the biological impact of diet interventions, it is very important to investigate the molecular mechanisms driving the diet-induced phenotypic changes in relevant tissues. However, studying these effects in humans is difficult due to ethical concerns in doing interventions and obtaining tissue samples and good animal models are therefore needed...
April 10, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28395666/hydroxytyrosol-prevents-reduction-in-liver-activity-of-%C3%AE-5-and-%C3%AE-6-desaturases-oxidative-stress-and-depletion-in-long-chain-polyunsaturated-fatty-acid-content-in-different-tissues-of-high-fat-diet-fed-mice
#16
Rodrigo Valenzuela, Francisca Echeverria, Macarena Ortiz, Miguel Ángel Rincón-Cervera, Alejandra Espinosa, María Catalina Hernandez-Rodas, Paola Illesca, Alfonso Valenzuela, Luis A Videla
BACKGROUND: Eicosapentaenoic acid (EPA, C20:5n-3), docosahexaenoic acid (DHA, C22:6n-3) and arachidonic acid (AA, C20:4n-6) are long-chain polyunsaturated fatty acids (LCPUFAs) with relevant roles in the organism. EPA and DHA are synthesized from the precursor alpha-linolenic acid (ALA, C18:3n-3), whereas AA is produced from linoleic acid (LA, C18:2n-6) through the action of Δ5 and Δ6-desaturases. High-fat diet (HFD) decreases the activity of both desaturases and LCPUFA accretion in liver and other tissues...
April 11, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28387617/oral-administration-of-%C3%AE-glucosylceramide-for-the-treatment-of-insulin-resistance-and-nonalcoholic-steatohepatitis-results-of-a-double-blind-placebo-controlled-trial
#17
Gadi Lalazar, Ehud Zigmond, Sarah Weksler-Zangen, Ami Ben Ya'acov, Miriam Sklair Levy, Nilla Hemed, Itamar Raz, Yaron Ilan
β-glucosylceramide (GC) is a naturally occurring glycosphingolipid that was shown to improve hepatic steatosis, steatohepatitis, and insulin resistance in animal models of nonalcoholic fatty liver disease. In this study, we evaluated the safety and efficacy of oral administration of GC in subjects with nonalcoholic steatohepatitis (NASH). Twenty-three patients with biopsy proven NASH were enrolled in a double-blind, placebo-controlled trial. Patients were orally administered daily with 7.5 mg of GC. Patients were followed for safety, liver enzymes, HbA1c, insulin sensitivity, lipid profile, hepatic fat content as measured by magnetic resonance imaging (MRI), and NASH score on liver biopsy...
April 7, 2017: Journal of Medicinal Food
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
#18
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/28386270/fimasartan-ameliorates-nonalcoholic-fatty-liver-disease-through-ppar%C3%AE-regulation-in-hyperlipidemic-and-hypertensive-conditions
#19
Yong-Jik Lee, Yoo-Na Jang, Yoon-Mi Han, Hyun-Min Kim, Jong-Min Jeong, Hong Seog Seo
To investigate the effects of fimasartan on nonalcoholic fatty liver disease in hyperlipidemic and hypertensive conditions, the levels of biomarkers related to fatty acid metabolism were determined in HepG2 and differentiated 3T3-L1 cells treated by high fatty acid and liver and visceral fat tissue samples of spontaneously hypertensive rats (SHRs) given high-fat diet. In HepG2 cells and liver tissues, fimasartan was shown to increase the protein levels of peroxisome proliferator-activated receptor delta (PPARδ), phosphorylated 5' adenosine monophosphate-activated protein kinase (p-AMPK), phosphorylated acetyl-CoA carboxylase (p-ACC), malonyl-CoA decarboxylase (MCD), medium chain acyl-CoA dehydrogenase (MCAD), and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), and it led to a decrease in the protein levels of 11 beta-hydroxysteroid dehydrogenase 1 (11β-HSDH1), fatty acid synthase (FAS), and tumor necrosis factor-alpha (TNF-α)...
2017: PPAR Research
https://www.readbyqxmd.com/read/28379241/hypolipidemic-effect-of-youcha-in-hyperlipidemia-rats-induced-by-high-fat-diet
#20
Zhenjun Zhu, Zhongyi Lin, Hongrui Jiang, Yi Jiang, Mouming Zhao, Xiaoling Liu
Youcha is a novel tea drink from the northeast of Guangxi. This study aimed to investigate the hypolipidemic properties of Youcha in high-fat induced hyperlipidemic Sprague-Dawley (SD) rats. After designing the model, rats were randomly divided into six groups (n = 10): normal diet (NMD) group, high-fat diet (HFD) group, Xuezhikang (120 mg kg(-1) d(-1)) (HFD+P) group and Youcha (150, 750 or 1500 mg kg(-1) d(-1)) (HFD+L, HFD+M or HFD+H) groups. Youcha comprises tea polyphenols (1.51 g per 100 g), caffeine (34...
April 19, 2017: Food & Function
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