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https://www.readbyqxmd.com/read/28731621/metabolic-engineering-for-advanced-biofuels-production-and-recent-advances-towards-commercialization
#1
Corey W Meadows, Aram Kang, Taek Soon Lee
Research on renewable biofuels produced by microorganisms has enjoyed considerable advances in academic and industrial settings. As the renewable ethanol market approaches maturity, the demand is rising for the commercialization of more energy-dense fuel targets. Many strategies implemented in recent years have considerably increased the diversity and number of fuel targets that can be produced by microorganisms. Moreover, strain optimization for some of these fuel targets has ultimately led to their production at industrial scale...
July 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28730729/traffic-related-air-pollution-associations-with-cytokeratin-18-a-marker-of-hepatocellular-apoptosis-in-an-overweight-and-obese-paediatric-population
#2
S Hsieh, B P Leaderer, A E Feldstein, N Santoro, L A McKay, S Caprio, R McConnell
INTRODUCTION: Traffic-related air pollution causes fatty liver, inflammation and fibrosis in animal models, but there have been few studies in humans. OBJECTIVES: To test the hypothesis that traffic-related air pollution causes non-alcoholic fatty liver disease (NAFLD) and increased markers for non-alcoholic steatohepatitis (NASH); and that NAFLD increases liver susceptibility to increased NASH risk. METHODS: Data collected prospectively from 74 overweight or obese children were obtained from the Yale Pediatric Obesity Clinic...
July 20, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28730512/nlrp3-deletion-inhibits-the-non-alcoholic-steatohepatitis-development-and-inflammation-in-kupffer-cells-induced-by-palmitic-acid
#3
Can Cai, Xiwen Zhu, Peizhi Li, Jinzheng Li, Jianping Gong, Wei Shen, Kun He
The cleavage and secretion of pro-inflammatory cytokines IL-1β and IL-18 is regulated by NLRP3 (NACHT, LRR, and PYD domain-containing protein 3) inflammasome activation. Kupffer cells (KCs) are implicated in the pathogenesis of various liver diseases, such as non-alcoholic fatty liver disease (NAFLD), alcoholic liver disease, and liver fibrosis. However, the role of NLRP3 played in the non-alcoholic steatohepatitis (NASH) has yet to be evaluated. In the present study, methionine-choline-deficient (MCD) diet was used to establish the mice NASH model...
July 20, 2017: Inflammation
https://www.readbyqxmd.com/read/28730324/the-role-of-ndgr-in-glycerol-metabolism-in-streptomyces-coelicolor
#4
Bo-Rahm Lee, Shashi Kant Bhatia, Hun-Suk Song, Junyoung Kim, Wooseong Kim, Hyung-Yeon Park, Jeong-Jun Yoon, Sung-Hee Park, Daehee Hwang, Byung-Gee Kim, Yung-Hun Yang
Streptomyces, which produces many pharmaceutical antibiotics and anticancer agents, is a genus of soil-dwelling bacteria with numerous regulators that control both primary and secondary metabolism. NdgR is highly conserved in Streptomyces spp. and is known to be involved in antibiotic production, tolerance against shock and physical stress, nitrogen metabolism, leucine metabolism, and N-acetylglucosamine metabolism. As another function of NdgR, we report the involvement of NdgR in glycerol metabolism in S. coelicolor...
July 20, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28730283/blockade-of-alcohol-escalation-and-relapse-drinking-by-pharmacological-faah-inhibition-in-male-and-female-c57bl-6j-mice
#5
Yan Zhou, Benjamin I Schwartz, Joanna Giza, Steven S Gross, Francis S Lee, Mary Jeanne Kreek
BACKGROUND: Anandamide (AEA)-dependent signaling is regulated by the catabolic enzyme fatty acid amide hydrolase (FAAH). Several lines of evidence have demonstrated that FAAH and AEA are involved in the behavioral effects of alcohol. Therefore, we investigated whether a selective FAAH inhibitor, URB597 (cyclohexylcarbamic acid 3'-[aminocarbonyl]-[1,1'-biphenyl]-3-yl ester), altered alcohol intake in mice in a voluntary alcohol drinking model. METHODS: Mice, subjected to 3 weeks of chronic intermittent access (IA) in a two-bottle choice paradigm with 24-h access every other day, developed rapid escalation of alcohol intake and high preference...
July 20, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28728746/linking-sex-differences-in-non-alcoholic-fatty-liver-disease-to-bile-acid-signaling-gut-microbiota-and-high-fat-diet
#6
John Y L Chiang
This commentary highlights the article by Jena et al that studied the complex interplay between diet, bile acids, sex, and dysbiosis in hepatic steatosis and inflammation.
August 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28727853/independent-and-joint-effects-of-moderate-alcohol-consumption-and-smoking-on-the-risks-of-non-alcoholic-fatty-liver-disease-in-elderly-chinese-men
#7
Peiyi Liu, Yanyan Xu, Yuhan Tang, Min Du, Xiao Yu, Jian Sun, Lin Xiao, Meian He, Sheng Wei, Jing Yuan, Youjie Wang, Yuan Liang, Tangchun Wu, Xiaoping Miao, Ping Yao
BACKGROUND: Whether cigarette smoking and moderate drinking are associated with non-alcoholic fatty liver disease (NAFLD)has not been fully described. This study investigated the separate and joint effects of smoking and moderate drinking on Chinese men with NAFLD. METHODS: Across-sectional assay from DFTJ Cohort study was performed with a size of 9432 elderly Chinese men excluding excessive alcohol consumption (<210g/week). Fatty liver was diagnosed by standardized ultrasonographic inspection...
2017: PloS One
https://www.readbyqxmd.com/read/28727474/a-primer-on-exocrine-pancreatic-insufficiency-fat-malabsorption-and-fatty-acid-abnormalities
#8
Samer Alkaade, Ashley A Vareedayah
Exocrine pancreatic insufficiency (EPI) is characterized by a deficiency of exocrine pancreatic enzymes, resulting in deficits in digestion of all macronutrients, with deficiencies in digestion of fats being the most clinically relevant. The leading cause of EPI is chronic pancreatitis. However, many other causes and conditions may be implicated, including cystic fibrosis, pancreatic duct obstruction, gastric and pancreatic surgery, diabetes mellitus and other conditions. Physical and biochemical causes of EPI include decreased production and secretion of lipase, increased lipase destruction, pancreatic duct obstruction, decreased lipase stimulation and degradation, as well as gastrointestinal motility disorders...
July 2017: American Journal of Managed Care
https://www.readbyqxmd.com/read/28727189/inversion-of-cpadh5-enantiopreference-and-altered-chain-length-specificity-for-methyl-3-hydroxyalkanoates
#9
Yunus Ensari, Gaurao V Dhoke, Mehdi D Davari, Marco Bocola, Anna Joelle Ruff, Ulrich Schwaneberg
Expanding the substrate scope of enzymes opens up new routes for synthesis of valuable chemicals. Ketone-functionalized fatty acid derivatives and corresponding chiral alcohols are valuable building blocks for the synthesis of a variety of chemicals including pharmaceuticals. The alcohol dehydrogenase from Candida parapsilosis (cpADH5) catalyzes the reversible oxidations of chiral alcohols and has a broad substrate range; a challenge for cpADH5 is to convert alcohols with small substituents (methyl or ethyl) next to the oxidized alcohol moiety...
July 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28726934/clove-extract-functions-as-a-natural-fatty-acid-synthesis-inhibitor-and-prevents-obesity-in-a-mouse-model
#10
Yiran Ding, Zhennan Gu, Yihe Wang, Shunhe Wang, Haiqin Chen, Hao Zhang, Wei Chen, Yong Q Chen
Numerous medicinal plants have been reported to prevent various chronic diseases. In this study, we screened a new FASN inhibitor-alcohol extract of clove (AEC) using a fast microplate method developed in our laboratory. The major components of AEC were: eugenol (42.27%), acetyl eugenol (29.12%), caryophyllene (15.40%), and humulene (3.22%). Fatty acid synthase (FASN) is a key enzyme for de novo lipogenesis, and it has been suggested as a potential therapeutic target in cancer and obesity. We have tested the ability of AEC to inhibit FASN in mammalian cells and tissues...
July 20, 2017: Food & Function
https://www.readbyqxmd.com/read/28726493/chemical-profile-and-antihyperlipidemic-effect-of-portulaca-oleracea-l-seeds-in-streptozotocin-induced-diabetic-rats
#11
Jilan A Nazeam, Hala M El-Hefnawy, Gamal Omran, Abdel-Naser Singab
Hypolipidemic effect of Portulaca oleracea L. seed extract and its fractions have been studied on streptozotocin (STZ) at dose 75 mg/kg b.wt. After fractionation of the alcoholic extract; petroleum ether fraction was the most active fraction that decreased different hyperlipidemia biochemical parameters. After chromatographic analysis; oleamide, ethylpalmitate, β-amyrin, stigmasterol and β-sitosterol were identified. The GLC analysis of unsaponifiable matter revealed the presence of; lignoceric acid as a major constituent in the most bioactive fraction...
July 20, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28726335/preperitoneal-fat-as-a-noninvsasive-marker-of-increased-risk-of-severe-non-alcoholic-fatty-liver-disease-in-patients-with-type-2-diabetes
#12
Daniella Braz Parente, Jaime Araújo Oliveira Netso, Pedro Emmanuel Alvarenga Americano Brasil, Fernando Fernandes Paiva, José Pedro Rodrigues Ravani, Marilia Brito Gomes, Valeria Lanzoni, Carlos Frederico Ferreira Campos, Lilian Machado-Silva, Renata Mello Perez, Rosana Souza Rodrigues
BACKGROUND AND AIM: Fat distribution may have prognostic value in the evaluation of non-alcoholic fatty liver disease. This study was conducted to evaluate associations of MRI-measured abdominal fat areas with steatosis, steatohepatitis, and fibrosis, assessed histopathologically, in patients with type 2 diabetes. METHODS: This prospective study included 66 patients with type 2 diabetes (12 males, 54 females, age 26-68 years), without chronic liver disease of other causes...
July 20, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28725265/two-bifunctional-enzymes-from-the-marine-protist-thraustochytrium-roseum-biochemical-characterization-of-wax-ester-synthase-acyl-coa-diacylglycerol-acyltransferase-activity-catalyzing-wax-ester-and-triacylglycerol-synthesis
#13
Nannan Zhang, Zejing Mao, Ling Luo, Xia Wan, Fenghong Huang, Yangmin Gong
BACKGROUND: Triacylglycerols (TAGs) and wax esters (WEs) are important neutral lipids which serve as energy reservoir in some plants and microorganisms. In recent years, these biologically produced neutral lipids have been regarded as potential alternative energy sources for biofuel production because of the increased interest on developing renewable and environmentally benign alternatives for fossil fuels. In bacteria, the final step in TAG and WE biosynthetic pathway is catalyzed by wax ester synthase/acyl coenzyme A (acyl-CoA):diacylglycerol acyltransferase (WS/DGAT)...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28724274/the-correlation-between-liver-fat-content-and-ulcerative-colitis-disease-severity
#14
Raika Jamali, Mohammad Biglari, Seyyed Vahid Seyyed Hosseini, Ali Shakouri Rad, Farid Kosari
To evaluate the association between disease severity and hepatic steatosis in patients with ulcerative colitis (UC) and non-alcoholic steatohepatitis (NASH). Consecutively selected UC patients admitted to the gastroenterology clinic were enrolled in the study. UC severity was assessed by Truelove and Witts classification. Patients with severe UC were excluded from the study. NASH was determined based on persistently elevated serum aminotransferase levels and detection of fatty liver ultrasound. Patients with other etiologies for elevated aminotransferase levels were excluded...
May 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28722242/therapeutic-application-of-gpr119-ligands-in-metabolic-disorders
#15
REVIEW
Jin Won Yang, Hyo Seon Kim, Yong-Won Choi, Young-Mi Kim, Keon Wook Kang
GPR119 belongs to the G protein-coupled receptor family, and exhibits dual modes of action upon ligand-dependent activation: pancreatic secretion of insulin in a glucose-dependent manner, and intestinal secretion of incretins. Hence, GPR119 has emerged as a promising target for treating type 2 diabetes mellitus without causing hypoglycemia. However, despite continuous efforts by many major pharmaceutical companies, no synthetic GPR119 ligand has been approved as a new class of anti-diabetic agents thus far, nor has one passed beyond phase II clinical studies...
July 18, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28722105/hepatic-cxcl16-is-increased-in-gallstone-accompanied-with-liver-injury
#16
Saisai Zhang, Wei Zhang, Lihua Shi, Anqi Xie, Yihui Shao, Yanna Ye, Xuebo Pan, Zhuofeng Lin, Xiaokun Li, Yi Zhang
BACKGROUND AND AIMS: The current study aimed to investigate the relationship between circulating Soluble C-X-C chemokine ligand 16 (CXCL16) levels and clinical characteristics of gallstone. METHODS: 93 subjects including 53 subjects with gallstone, 25 subjects with non-alcoholic fatty liver disease (NAFLD) and 40 control subjects were recruited. All gallstone subjects underwent ultrasounds to confirm the gallstone patients. Serum CXCL16 levels and other clinical and biochemical parameters in all subjects were obtained based on standard clinical examination methods...
July 19, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28721519/variations-of-cocoon-external-lipids-during-wolf-spiderlings-development
#17
F Ruhland, S Schulz, Marie Trabalon
This study presents the first characterisation of the silk lipids of the cocoons of a wolf spider (Pardosa saltans). Wolf spiders' maternal behaviour is complex and involves guarding a cocoon for several weeks, and so cocoons must emit cues to ensure their care and the development of juveniles. We investigated cues associated with the cocoon silk. We assessed qualitative changes of the lipid contents and the composition of cocoon silk in relation to the development of P. saltans wolf spider juveniles. Gas chromatography-mass spectrometry of P...
July 18, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28720429/stable-isotope-based-flux-studies-in-nonalcoholic-fatty-liver-disease
#18
REVIEW
Arthur McCullough, Stephen Previs, Takhar Kasumov
Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease and is associated with the worldwide epidemics of obesity, diabetes and cardiovascular diseases. NAFLD ranges from benign fat accumulation in the liver (steatosis) to non-alcoholic steatohepatitis (NASH), and cirrhosis which can progress to hepatocellular carcinoma and liver failure. Mass spectrometry and magnetic resonance spectroscopy-coupled stable isotope-based flux studies provide new insights into the understanding of NAFLD pathogenesis and the disease progression...
July 15, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28720428/inhibitors-of-connexin-and-pannexin-channels-as-potential-therapeutics
#19
REVIEW
Joost Willebrords, Michaël Maes, Sara Crespo Yanguas, Mathieu Vinken
While gap junctions support the exchange of a number of molecules between neighboring cells, connexin hemichannels provide communication between the cytosol and the extracellular environment of an individual cell. The latter equally holds true for channels composed of pannexin proteins, which display an architecture reminiscent of connexin hemichannels. In physiological conditions, gap junctions are usually open, while connexin hemichannels and, to a lesser extent, pannexin channels are typically closed, yet they can be activated by a number of pathological triggers...
July 15, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28719078/luseogliflozin-improves-liver-fat-deposition-compared-to-metformin-in-type-2-diabetes-patients-with-non-alcoholic-fatty-liver-disease-a-prospective-randomized-controlled-pilot-study
#20
Takashi Shibuya, Nobutoshi Fushimi, Miyuka Kawai, Yohei Yoshida, Hiroki Hachiya, Shun Ito, Hiromi Kawai, Noritsugu Ohashi, Akihiro Mori
Non-alcoholic fatty liver disease (NAFLD) often coexists with type 2 diabetes (T2D), and its prevalence in patients with T2D is estimated to be approximately 50%-60% in Japan.(1) In some patients with T2D, NAFLD can progress to non-alcoholic steatohepatitis (NASH) and further to liver cirrhosis and hepatocellular carcinoma (HCC).(2) Moreover, NAFLD is considered an independent risk factor for cardiovascular events.(3).
July 18, 2017: Diabetes, Obesity & Metabolism
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