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Fatty acid synthase

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https://www.readbyqxmd.com/read/28328915/fatty-acid-synthases-re-engineering-biofactories
#1
Timm Maier
No abstract text is available yet for this article.
March 22, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28328738/inhibition-of-hippocampal-long-term-potentiation-by-high-fat-diets-is-it-related-to-an-effect-of-palmitic-acid-involving-glycogen-synthase-kinase-3
#2
Ana Contreras, Danila Del Rio, Ana Martínez, Carmen Gil, Lidia Morales, Mariano Ruiz-Gayo, Nuria Del Olmo
High-fat diets (HFD) impair hippocampal-dependent learning and memory and produce important changes in synaptic transmission by enhancing glutamate uptake, decreasing synaptic efficacy, and inhibiting plasticity mechanisms such as N-methyl-D-aspartate-mediated long-term depression (LTD) within the hippocampus. Adolescent animals seem to be particularly susceptible to the detrimental effect of HFD as dietary treatments carried out between weaning and early adulthood are much more efficient in terms of hippocampal damage that those carried out during the adult period...
March 21, 2017: Neuroreport
https://www.readbyqxmd.com/read/28327528/anti-obesity-effect-of-bombus-ignitus-queen-glycosaminoglycans-in-rats-on-a-high-fat-diet
#3
Mi Young Ahn, Ban Ji Kim, Ha Jeong Kim, Hyung Joo Yoon, Sang Duck Jee, Jae Sam Hwang, Kun-Koo Park
The mechanism of functional insect glycosaminoglycan (GAG) on obesity caused a high fat diet has not yet been elucidated. Therefore, insect glycosaminoglycans derived from Isaria sinclairii, Bombus ignitus (a type of bumblebee) queen, and Gryllus bimaculatus were purified and investigated as a potential functional food. 14-week old male Wistar rats were fed a high-fat diet (HFD) for 6 weeks. There were five groups that received daily intraperitoneal administration of phosphate buffered saline (PBS, control), GbG (GAG from Gryllus bimaculatus) 10 mg/kg, ISG (GAG from Isaria sinclairii) 10 mg/kg, IQG (GAG from Bombus ignites) 10 mg/kg, or Pravastatin (2 mg/kg)...
March 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28324785/-ub006-a-new-fatty-acid-synthase-inhibitor-and-cytotoxic-agent-without-anorexic-side-effects
#4
Kamil Makowski, Joan Francesc Mir, Paula Mera, Xavier Ariza, Guillermina Asins, Fausto G Hegardt, Laura Herrero, Jordi García, Dolors Serra
C75 is a synthetic anticancer drug that inhibits fatty acid synthase (FAS) and shows a potent anorexigenic side effect. In order to find new cytotoxic compounds that do not impact food intake, we synthesized a new family of C75 derivatives. The most promising anticancer compound among them was UB006 ((4SR,5SR)-4-(hydroxymethyl)-3-methylene-5-octyldihydrofuran-2(3H)-one). The effects of this compound on cytotoxicity, food intake and body weight were studied in UB006 racemic mixture and in both its enantiomers separately...
March 12, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28319852/pterostilbene-a-dimethylated-analog-of-resveratrol-promotes-energy-metabolism-in-obese-rats
#5
Koji Nagao, Tomoyuki Jinnouchi, Shunichi Kai, Teruyoshi Yanagita
Pterostilbene (trans-3,5-dimethoxy-4-hydroxystilbene) is a dimethylated analog of resveratrol and has been reported to exert various pharmacological effects. In this study, we evaluated the effect of pterostilbene on the pathogenesis of obesity and energy metabolism in obese rats. Pterostilbene significantly activates silent mating type information regulation 2 homolog-1 and peroxisome proliferator-activated receptor-alpha in vitro. At 4 weeks a 0.5% pterostilbene diet markedly suppressed the abdominal white adipose tissue (WAT) accumulation in obese rats...
March 8, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28315901/the-effect-of-sitagliptin-on-lipid-metabolism-of-fatty-liver-mice-and-related-mechanisms
#6
Bilin Xu, Tian Shen, Lin Chen, Juan Xia, Cuiping Zhang, Hongping Wang, Ming Yu, Tao Lei
BACKGROUND In clinics, patients with type 2 diabetes complicated with non-alcoholic fatty liver disease (NAFLD) have been shown to receive significant improvements in blood glucose levels, lipid levels, and liver function after sitagliptin treatment, although the mechanism of drug action remains poorly understood. This study investigated the possible mechanism of sitagliptin on lipid metabolism of NAFLD mice. MATERIAL AND METHODS Male C57/BL6 mice were induced for NAFLD via 16 weeks of a high-fat diet, and were treated with 15 mg/kg/day sitagliptin for 16 consecutive weeks...
March 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28315617/dietary-fructose-augments-ethanol-induced-liver-pathology
#7
Paul G Thomes, Jennifer H Benbow, Elizabeth Brandon-Warner, Kyle J Thompson, Carl Jacobs, Terrence M Donohue, Laura W Schrum
Certain dietary components when combined with alcohol exacerbate alcohol-induced liver injury (ALI). Here, we tested whether fructose, a major ingredient of the western diet, enhances the severity of ALI. We fed mice ethanol for 8 weeks in the following Lieber-DeCarli diets: (a) Regular (contains olive oil); (b) corn oil (contains corn oil); (c) fructose (contains fructose and olive oil) and (d) corn+fructose (contains fructose and corn oil). We compared indices of metabolic function and liver pathology among the different groups...
March 6, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28302626/sting-irf3-triggers-endothelial-inflammation-in-response-to-free-fatty-acid-induced-mitochondrial-damage-in-diet-induced-obesity
#8
Yun Mao, Wei Luo, Lin Zhang, Weiwei Wu, Liangshuai Yuan, Hao Xu, Juhee Song, Keigi Fujiwara, Jun-Ichi Abe, Scott A LeMaire, Xing Li Wang, Ying H Shen
OBJECTIVE: Metabolic stress in obesity induces endothelial inflammation and activation, which initiates adipose tissue inflammation, insulin resistance, and cardiovascular diseases. However, the mechanisms underlying endothelial inflammation induction are not completely understood. Stimulator of interferon genes (STING) is an important molecule in immunity and inflammation. In the present study, we sought to determine the role of STING in palmitic acid-induced endothelial activation/inflammation...
March 16, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28302472/erk1-and-erk2-activation-modulates-diet-induced-obesity-in-mice
#9
Amira Sayed Khan, Selvakumar Subramaniam, Gado Dramane, Douadi Khelifi, Naim Akhtar Khan
Obesity is a worldwide problem, and dietary lipids play an important role in its pathogenesis. Recently, Erk1 knock-out (ERK1(-/-)) mice have been shown to exhibit low preference for dietary fatty acids. Hence, we maintained Erk1(-/-) mice on a high-fat diet (HFD) to assess the implication of this mitogen-activated protein (MAP) kinase in obesity. The Erk1(-/-) mice, fed the HFD, were more obese than wild-type (WT) animals, fed the same diet. Erk1(-/-) obese mice gained more fat and liver mass than WT obese animals...
March 13, 2017: Biochimie
https://www.readbyqxmd.com/read/28300786/hypocholesterolemic-effects-of-probiotic-mixture-on-diet-induced-hypercholesterolemic-rats
#10
Shang-Jin Kim, Sang Hoon Park, Hong-Sig Sin, Seung-Hwan Jang, Sang-Wang Lee, Seon-Young Kim, Bora Kwon, Kang-Yeol Yu, Su Young Kim, Dong Kwon Yang
Growing evidence has indicated that supplementation with probiotics improves lipid metabolism. We aimed to investigate the beneficial effects of a probiotics mixture (PM) of three strains belonging to the species Bifidobacterium (B. longum, B. lactis, and B. breve) and two strains belonging to the species Lactobacillus (L. reuteri and L. plantarum) on cholesterol-lowering efficacy in hypercholesterolemic rats. A hypercholesterolemic rat model was established by feeding a high-cholesterol diet for eight weeks...
March 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28299850/ethanol-extract-of-pinus-koraiensis-leaf-ameliorates-alcoholic-fatty-liver-via-the-activation-of-lkb1-ampk-signaling-in-vitro-and-in-vivo
#11
Sang-Hyuk Hong, Hyemin Lee, Hyo-Jung Lee, Bonglee Kim, Min-Ho Nam, Bum-Sang Shim, Sung-Hoon Kim
Although Pinus koraiensis leaf (PKL) was reported for its anti-diabetes, anti-obesity and anticancer effects as a folk remedy, the inhibitory effect of PKL on alcoholic fatty liver has never been elucidated yet. This study investigated the molecular mechanisms of PKL on alcoholic fatty liver in HepG2 cells, Sprague Dawley (SD) rats and Imprinting Control Region (ICR) mice. Pinus koraiensis leaf increased phosphorylation of liver kinase B1 (LKB1)/AMP-activated protein kinase signaling, low-density lipoprotein receptor and decreased fatty acid biosynthesis-related proteins such as sterol regulatory element-binding protein 1c, fatty acid synthase, 3-hydroxy-3-methylglutaryl-CoA reductase in HepG2 cells...
March 16, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28298542/lipid-emulsion-added-to-a-liquid-high-carbohydrate-diet-and-voluntary-running-exercise-reduce-lipogenesis-and-ameliorate-early-stage-hepatic-steatosis-in-mice
#12
Kuan-Hsun Huang, Lei Hao, Philip B Smith, Connie J Rogers, Andrew D Patterson, A Catharine Ross
Background: The use of parenteral nutrition formulas is often associated with the development of hepatic steatosis. We have shown previously that the addition of a lipid emulsion (LE) rich in n-6 (ω-6) fatty acids (FAs) ameliorated triglyceride (TG) accumulation in the livers of nonobese mice fed a high-carbohydrate diet (HCD) for 5 wk. However, it remains unclear how rapidly this condition develops and whether it can be prevented by LE with or without a running wheel for voluntary exercise (Exe).Objective: We investigated in an 8-d study whether mice develop steatosis and whether the administration of LE with or without Exe reduces the concentration of total FAs and prevents an increase in the expression of genes in the liver associated with lipogenesis...
March 15, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28297802/-influence-of-high-fat-diet-in-paternal-c57bl-6-mice-on-liver-fat-deposition-in-offspring
#13
J Zhang, H G Li, L Fu, F S Di
Objective: To investigate the influence of high-fat diet (HFD) in paternal C57BL/6 mice on HFD-induced liver fat deposition in male offspring, as well as transgenerational inheritance caused by paternal HFD and related mechanisms. Methods: A total of 20 male C57BL/6 mice aged 3 weeks (F0) were randomly divided into normal control group (C, 10 mice) and HFD group (HF, 10 mice). After 12 weeks of HFD intervention, the male mice in the HFD group mated with female ones treated with normal diet and pups were obtained...
February 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28295185/dual-targeting-of-mcl1-and-noxa-as-effective-strategy-for-treatment-of-mantle-cell-lymphoma
#14
Elisabeth Höring, Arnau Montraveta, Simon Heine, Markus Kleih, Lea Schaaf, Matthias C Vöhringer, Anna Esteve-Arenys, Gael Roué, Dolors Colomer, Elias Campo, German Ott, Walter E Aulitzky, Heiko van der Kuip
Imbalances in the composition of BCL2 family proteins contribute to tumourigenesis and therapy resistance of mantle cell lymphoma (MCL), making these proteins attractive therapy targets. We studied the efficiency of dual targeting the NOXA/MCL1 axis by combining fatty acid synthase inhibitors (NOXA stabilization) with the CDK inhibitor Dinaciclib (MCL1 reduction). This combination synergistically induced apoptosis in cell lines and primary MCL cells and led to almost complete inhibition of tumour progression in a mouse model...
March 14, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28294699/chia-oil-enriched-restructured-pork-effects-on-oxidative-and-inflammatory-status-of-aged-rats-fed-high-cholesterol-high-fat-diets
#15
Jorge Arturo Santos-López, Alba Garcimartín, María Elvira López-Oliva, Mirandeli Bautista-Ávila, María José González-Muñoz, Sara Bastida, Juana Benedí, Francisco José Sánchez-Muniz
Chia oil has the highest recognized α-linolenic acid (ALA) content. ALA is associated with beneficial changes in plasma lipids and the prevention of cardiovascular diseases. Present article aims to analyze the effect of Chia oil-enriched restructured pork (RP) on aged rats in a nonalcoholic steatohepatitis (NASH) model. Groups of six male Wistar rats (1-year old) were fed the experimental diets: control RP diet (C) noncholesterol high saturated; cholesterol-enriched high-saturated fat/high-cholesterol control RP diet (HC) with added cholesterol and cholic acid; and Chia oil- or Hydroxytyrosol RP cholesterol-enriched high-saturated fat/high cholesterol (CHIA and HxT)...
March 15, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28292742/fatty-acid-synthesis-intermediates-represent-novel-noninvasive-biomarkers-of-prostate-cancer-chemoprevention-by-phenethyl-isothiocyanate
#16
Krishna B Singh, Shivendra V Singh
Increased de novo synthesis of fatty acids is a distinctive feature of prostate cancer, which continues to be a leading cause of cancer-related deaths among American men. Therefore, inhibition of de novo fatty acid synthesis represents an attractive strategy for chemoprevention of prostate cancer. We have shown previously that dietary feeding of phenethyl isothiocyanate (PEITC), a phytochemical derived from edible cruciferous vegetables such as watercress, inhibits incidence and burden of poorly-differentiated prostate cancer in Transgenic Adenocarcinoma of Mouse Prostate (TRAMP) model...
March 14, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28291869/neuroprotective-effects-of-omega-3-polyunsaturated-fatty-acids-in-a-rat-model-of-anterior-ischemic-optic-neuropathy
#17
Tassos Georgiou, Yao-Tseng Wen, Chung-Hsing Chang, Panagiotis Kolovos, Maria Kalogerou, Ekatherine Prokopiou, Anastasia Neokleous, Chin-Te Huang, Rong-Kung Tsai
Purpose: The purpose of this study was to investigate the therapeutic effect of omega-3 polyunsaturated fatty acid (ω-3 PUFA) administration in a rat model of anterior ischemic optic neuropathy (rAION). Methods: The level of blood arachidonic acid/eicosapentaenoic acid (AA/EPA) was measured to determine the suggested dosage. The rAION-induced rats were administered fish oil (1 g/day EPA) or phosphate-buffered saline (PBS) by daily gavage for 10 consecutive days to evaluate the neuroprotective effects...
March 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28290602/ajs1669-a-novel-small-molecule-muscle-glycogen-synthase-activator-improves-glucose-metabolism-and-reduces-body-fat-mass-in-mice
#18
Kazuhiro Nakano, Sen Takeshita, Noriko Kawasaki, Wataru Miyanaga, Yoriko Okamatsu, Mizuki Dohi, Tadakiyo Nakagawa
Impaired glycogen synthesis and turnover are common in insulin resistance and type 2 diabetes. As glycogen synthase (GS) is a key enzyme involved in the synthetic process, it presents a promising therapeutic target for the treatment of type 2 diabetes. In the present study, we identified a novel, potent and orally available GS activator AJS1669 {sodium 2-[[5-[[4-(4,5-difluoro-2-methylsulfanyl-phenyl)phenoxy] methyl]furan-2-carbonyl]-(2-furylmethyl)amino] acetate}. In vitro, we performed a glycogen synthase 1 (GYS1) activation assay for screening GS activators and identified that the activity of AJS1669 was further potentiated in the presence of glucose-6-phosphate (G6P)...
March 7, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28289220/phytosphingosine-degradation-pathway-includes-fatty-acid-%C3%AE-oxidation-reactions-in-the-endoplasmic-reticulum
#19
Takuya Kitamura, Naoya Seki, Akio Kihara
Although normal fatty acids (FAs) are degraded via β-oxidation, unusual FAs such as 2-hydroxy (2-OH) FAs and 3-methyl-branched FAs are degraded via α-oxidation. Phytosphingosine (PHS) is one of the long-chain bases (the sphingolipid components) and exists in specific tissues, including the epidermis and small intestine in mammals. In the degradation pathway, PHS is converted to 2-OH palmitic acid and then to pentadecanoic acid (C15:0-COOH) via FA α-oxidation. However, the detailed reactions and genes involved in the α-oxidation reactions of the PHS degradation pathway have yet to be determined...
March 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28285648/branched-chain-amino-acids-alleviate-hepatic-steatosis-and-liver-injury-in-choline-deficient-high-fat-diet-induced-nash-mice
#20
Takashi Honda, Masatoshi Ishigami, Fangqiong Luo, Ma Lingyun, Yoji Ishizu, Teiji Kuzuya, Kazuhiko Hayashi, Isao Nakano, Tetsuya Ishikawa, Guo-Gang Feng, Yoshiaki Katano, Tomoya Kohama, Yasuyuki Kitaura, Yoshiharu Shimomura, Hidemi Goto, Yoshiki Hirooka
BACKGROUND: For successful treatment for nonalcoholic steatohepatitis (NASH), it may be important to treat the individual causative factors. At present, however, there is no established treatment for this disease. Branched-chain amino acids (BCAAs) have been used to treat patients with decompensated cirrhosis. AIM: In order to elucidate the mechanisms responsible for the effects of BCAAs on hepatic steatosis and disease progression, we investigated the effects of BCAA supplementation in mice fed a choline-deficient high-fat diet (CDHF), which induces NASH...
April 2017: Metabolism: Clinical and Experimental
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