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Carbohydrate metabolism

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https://www.readbyqxmd.com/read/28647921/proteome-profile-of-aspergillus-terreus-conidia-at-germinating-stage-identification-of-probable-virulent-factors-and-enzymes-from-mycotoxin-pathways
#1
Raman Thakur, Jata Shankar
Aspergillus terreus is an emerging opportunistic fungal pathogen that causes invasive aspergillosis in immunocompromised individuals. The main risk group of individuals for this organism is leukopenic patients, individuals having cancers, bone marrow transplant persons and those who have immunological disorders. The lack of early diagnostic marker for A. terreus and intrinsic resistance to Amphotericin B, further limits the successful therapy of A. terreus-associated infections. The germination of inhaled conidia is the key step to establish successful invasion in host tissues or organs...
June 24, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28646918/diurnal-cycling-of-rhizosphere-bacterial-communities-is-associated-with-shifts-in-carbon-metabolism
#2
Christopher Staley, Abigail P Ferrieri, Malak M Tfaily, Yaya Cui, Rosalie K Chu, Ping Wang, Jared B Shaw, Charles K Ansong, Heather Brewer, Angela D Norbeck, Meng Markillie, Fernanda do Amaral, Thalita Tuleski, Tomás Pellizzaro, Beverly Agtuca, Richard Ferrieri, Susannah G Tringe, Ljiljana Paša-Tolić, Gary Stacey, Michael J Sadowsky
BACKGROUND: The circadian clock regulates plant metabolic functions and is an important component in plant health and productivity. Rhizosphere bacteria play critical roles in plant growth, health, and development and are shaped primarily by soil communities. Using Illumina next-generation sequencing and high-resolution mass spectrometry, we characterized bacterial communities of wild-type (Col-0) Arabidopsis thaliana and an acyclic line (OX34) ectopically expressing the circadian clock-associated cca1 transcription factor, relative to a soil control, to determine how cycling dynamics affected the microbial community...
June 24, 2017: Microbiome
https://www.readbyqxmd.com/read/28646149/crucial-role-of-4-deoxy-l-erythro-5-hexoseulose-uronate-reductase-for-alginate-utilization-revealed-by-adaptive-evolution-in-engineered-saccharomyces-cerevisiae
#3
Fumiya Matsuoka, Makoto Hirayama, Takayuki Kashihara, Hideki Tanaka, Wataru Hashimoto, Kousaku Murata, Shigeyuki Kawai
In brown macroalgae, alginate and D-mannitol are promising carbohydrates for biorefinery. Saccharomyces cerevisiae is widely used as a microbial cell factory, but this budding yeast is unable to utilize either alginate or D-mannitol. Alginate can be depolymerized by both endo-type and exo-type alginate lyases, yielding a monouronate, 4-deoxy-L-erythro-5-hexoseulose uronate (DEH), a key intermediate in the metabolism of alginate. Here, we constructed engineered two S. cerevisiae strains that are able to utilize both DEH and D-mannitol on two different strain backgrounds, and we also improved their aerobic growth in a DEH liquid medium through adaptive evolution...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28644561/the-redox-sensitive-module-of-cyclophilin-20-3-2-cysteine-peroxiredoxin-and-cysteine-synthase-integrates-sulfur-metabolism-and-oxylipin-signaling-in-the-high-light-acclimation-response
#4
Sara M Müller, Shanshan Wang, Wilena Telman, Michael Liebthal, Helena Schnitzer, Andrea Viehhauser, Carsten Sticht, Carolina Delatorre, Markus Wirtz, Rüdiger Hell, Karl-Josef Dietz
The integration of redox- and reactive oxygen species-dependent signaling and metabolic activities are fundamental to plant acclimation to biotic and abiotic stresses. Previous data suggest the existence of a dynamically interacting module in the chloroplast stroma consisting of cyclophilin 20-3 (Cyp20-3), O-acetylserine(thiol)lyase B (OASTL-B), 2-cysteine peroxiredoxins A/B (2-CysPrx) and serine acetyltransferase 2;1 (SERAT2;1). The functionality of this COPS module is influenced by redox stimuli and oxophytodienoic acid (OPDA) which is the precursor for jasmonic acid...
June 23, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28642749/rna-seq-reveals-enhanced-sugar-metabolism-in-streptococcus-mutans-co-cultured-with-candida-albicans-within-mixed-species-biofilms
#5
Jinzhi He, Dongyeop Kim, Xuedong Zhou, Sang-Joon Ahn, Robert A Burne, Vincent P Richards, Hyun Koo
Early childhood caries (ECC), which can lead to rampant tooth-decay that is painful and costly to treat, is one of the most prevalent infectious diseases affecting children worldwide. Previous studies support that interactions between Streptococcus mutans and Candida albicans are associated with the pathogenesis of ECC. The presence of Candida enhances S. mutans growth, fitness and accumulation within biofilms in vitro, although the molecular basis for these behaviors is undefined. Using an established co-cultivation biofilm model and RNA-Seq, we investigated how C...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642676/international-society-of-sports-nutrition-position-stand-protein-and-exercise
#6
REVIEW
Ralf Jäger, Chad M Kerksick, Bill I Campbell, Paul J Cribb, Shawn D Wells, Tim M Skwiat, Martin Purpura, Tim N Ziegenfuss, Arny A Ferrando, Shawn M Arent, Abbie E Smith-Ryan, Jeffrey R Stout, Paul J Arciero, Michael J Ormsbee, Lem W Taylor, Colin D Wilborn, Doug S Kalman, Richard B Kreider, Darryn S Willoughby, Jay R Hoffman, Jamie L Krzykowski, Jose Antonio
The International Society of Sports Nutrition (ISSN) provides an objective and critical review related to the intake of protein for healthy, exercising individuals. Based on the current available literature, the position of the Society is as follows:An acute exercise stimulus, particularly resistance exercise, and protein ingestion both stimulate muscle protein synthesis (MPS) and are synergistic when protein consumption occurs before or after resistance exercise.For building muscle mass and for maintaining muscle mass through a positive muscle protein balance, an overall daily protein intake in the range of 1...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28641787/social-jet-lag-potentiates-obesity-and-metabolic-syndrome-when-combined-with-cafeteria-diet-in-rats
#7
Estefania Espitia-Bautista, Mario Velasco-Ramos, Iván Osnaya-Ramírez, Manuel Ángeles-Castellanos, Ruud M Buijs, Carolina Escobar
BACKGROUND/OBJECTIVES: Modern lifestyle promotes shifted sleep onset and shifted wake up time between weekdays and weekends, producing a condition termed "social-jet lag." Disrupted sleep promotes increased appetite for carbohydrate and fat-rich food, which in long term leads to overweight, obesity and metabolic syndrome. In order to mimic the human situation we produced an experimental model of social-jet lag (Sj-l). With this model, we explored the link between shifted sleep time with consumption of a cafeteria diet (CafD) and the development of obesity and metabolic syndrome...
July 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28640802/peroxisomal-biogenesis-is-genetically-and-biochemically-linked-to-carbohydrate-metabolism-in-drosophila-and-mouse
#8
Michael F Wangler, Yu-Hsin Chao, Vafa Bayat, Nikolaos Giagtzoglou, Abhijit Babaji Shinde, Nagireddy Putluri, Cristian Coarfa, Taraka Donti, Brett H Graham, Joseph E Faust, James A McNew, Ann Moser, Marco Sardiello, Myriam Baes, Hugo J Bellen
Peroxisome biogenesis disorders (PBD) are a group of multi-system human diseases due to mutations in the PEX genes that are responsible for peroxisome assembly and function. These disorders lead to global defects in peroxisomal function and result in severe brain, liver, bone and kidney disease. In order to study their pathogenesis we undertook a systematic genetic and biochemical study of Drosophila pex16 and pex2 mutants. These mutants are short-lived with defects in locomotion and activity. Moreover these mutants exhibit severe morphologic and functional peroxisomal defects...
June 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28640743/glucose-consumption-in-carbohydrate-mixtures-by-phosphotransferase-system-mutants-of-escherichia-coli
#9
Tian Xia, Neeraj Sriram, Sarah A Lee, Ronni Altman, Jeffrey L Urbauer, Elliot Altman, Mark A Eiteman
Escherichia coli lacking the glucose phosphotransferase system (PTS), mannose PTS and glucokinase are supposedly unable to grow on glucose as the sole carbon source (Curtis SJ, Epstein W. J Bacteriol 1975;122:1189-1199). We report that W ptsG manZ glk (ALS1406) grows slowly on glucose in media containing glucose with a second carbon source: ALS1406 metabolizes glucose after that other carbon source, including arabinose, fructose, glycerol, succinate or xylose, is exhausted. Galactose is an exception to this rule, as ALS1406 simultaneously consumes both galactose and glucose...
June 22, 2017: Microbiology
https://www.readbyqxmd.com/read/28639757/-ketogenic-diets-the-miraculous-solution
#10
Christophe Kosinski, François R Jornayvaz
The treatment of obesity and cardiovascular diseases is one of the most difficult and important challenges nowadays. Weight loss is frequently offered and aimed at improving some of the components of the metabolic syndrome. Among various diets, carbohydrate restriction is popular, specifically ketogenic diets, which are very low in carbohydrates and usually high in fats and /or proteins. Results are controversial, but some benefits such as weight loss and improved glycemic control have been described. Nevertheless, these effects seem to be limited in time...
May 31, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28639573/a-transcriptomic-analysis-of-physiological-significance-of-hypoxia-inducible-factor-1%C3%AE-in-myogenesis-and-carbohydrate-metabolism-of-genioglossus-in-mice
#11
Tong Hao, Yue-Hua Liu, Yuan-Yuan Li, Yun Lu, Hong-Yi Xu
BACKGROUND: Chronic intermittent hypoxia is the most remarkable feature of obstructive sleep apnea/hypopnea syndrome and it can induce the change of hypoxia-inducible factor-1α (HIF-1α) expression and contractile properties in the genioglossus. To clarify the role of HIF-1α in contractile properties of the genioglossus, this study generated and compared high-throughput RNA-sequencing data from genioglossus between HIF-1α conditional knockout (KO) mice and littermate wild-type (WT) mice...
July 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28638873/protective-effect-of-camel-milk-as-anti-diabetic-supplement-biochemical-molecular-and-immunohistochemical-study
#12
Ahmed A Mansour, Mohammed A Nassan, Osama M Saleh, Mohamed M Soliman
BACKGROUND: Diabetes is a serious disease affects human health. Diabetes in advanced stages is accompanied by general weakness and alteration in fats and carbohydrates metabolism. Recently there are some scientific trends about the usage of camel milk (CM) in the treatment of diabetes and its associated alterations. CM contains vital active particles with insulin like action that cure diabetes and its complications but how these effects occur, still unclear. MATERIALS AND METHODS: Seventy-five adult male rats of the albino type divided into five equal groups...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28638866/kinetics-of-modulatory-role-of-cyperus-esculentus-l-on-the-specific-activity-of-key-carbohydrate-metabolizing-enzymes
#13
Saheed Sabiu, Emmanuel Oladipo Ajani, Taofik Olatunde Sunmonu, Anofi Omotayo Tom Ashafa
BACKGROUND: The continuous search for new lead compounds as viable inhibitors of specific enzymes linked to carbohydrate metabolism has intensified. Cyperus esculentus L. is one of the therapeutically implicated botanicals against several degenerative diseases including diabetes mellitus. MATERIALS AND METHODS: This study evaluated the antioxidant and mechanism(s) of inhibitory potential of aqueous extract of C. esculentus on α-amylase and α-glucosidase in vitro...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28638397/generation-annotation-and-analysis-of-a-large-scale-expressed-sequence-tag-library-from-arabidopsis-pumila-to-explore-salt-responsive-genes
#14
Xianzhong Huang, Lifei Yang, Yuhuan Jin, Jun Lin, Fang Liu
Arabidopsis pumila is an ephemeral plant, and a close relative of the model plant Arabidopsis thaliana, but it possesses higher photosynthetic efficiency, higher propagation rate, and higher salinity tolerance compared to those A. thaliana, thus providing a candidate plant system for gene mining for environmental adaption and salt tolerance. However, A. pumila is an under-explored resource for understanding the genetic mechanisms underlying abiotic stress adaptation. To improve our understanding of the molecular and genetic mechanisms of salt stress adaptation, more than 19,900 clones randomly selected from a cDNA library constructed previously from leaf tissue exposed to high-salinity shock were sequenced...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28637865/an-evolutionarily-distinct-family-of-polysaccharide-lyases-removes-rhamnose-capping-of-complex-arabinogalactan-proteins
#15
José Munoz-Munoz, Alan Cartmell, Nicolas Terrapon, Arnaud Baslé, Bernard Henrissat, Harry J Gilbert
The human gut microbiota utilizes complex carbohydrates as major nutrients. The requirement for efficient glycan degrading systems exerts a major selective selection pressure on this microbial community. Thus, we propose that this microbial ecosystem represents a substantial resource for discovering novel carbohydrate active enzymes. To test this hypothesis we screened the potential enzymatic functions of hypothetical proteins encoded by genes of Bacteroides thetaiotaomicron that were upregulated by arabinogalactan arabinogalactan proteins or AGPs...
June 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28637651/pivotal-role-of-o-glcnac-modification-in-cold-induced-thermogenesis-by-brown-adipose-tissue-through-mitochondrial-biogenesis
#16
Natsuko Ohashi, Katsutaro Morino, Shogo Ida, Osamu Sekine, Mengistu Lemecha, Shinji Kume, Shi-Young Park, Cheol Soo Choi, Satoshi Ugi, Hiroshi Maegawa
Adipose tissues considerably influence metabolic homeostasis, and both white (WAT) and brown adipose tissue (BAT) play significant roles in lipid and glucose metabolism. O-GlcNAc modification is characterized by the addition of N-acetylglucosamine to various proteins by O-GlcNAc transferase (Ogt), subsequently modulating various cellular processes. However, little is known about the role of O-GlcNAc modification in adipose tissues. Here, we report the critical role of O-GlcNAc modification in cold-induced thermogenesis...
June 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28637631/validity-of-a-digital-diet-estimation-method-for-use-with-preschool-children
#17
Theresa Nicklas, Noemi G Islam, Rabab Saab, Rebecca Schulin, Yan Liu, Nancy F Butte, John W Apolzan, Candice A Myers, Corby K Martin
BACKGROUND: The validity of using the Remote Food Photography Method (RFPM) for measuring food intake of minority preschool children's intake is not well documented. OBJECTIVE: Our aim was to determine the validity of intake estimations made by human raters using the RFPM compared with those obtained by weighing all foods and beverages consumed by 3- to 5-year-old children (weighed method). DESIGN: We conducted a cross-sectional observational study...
June 18, 2017: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/28637406/socioeconomic-status-the-missing-link-between-obesity-and-diabetes-mellitus
#18
Alexei Volaco, Ana Maria Cavalcanti, Roberto Pecoits Filho, Dalton Bertolim Précoma
BACKGROUND: Currently, there is an epidemic expansion of the obesity rates worldwide. The increasing number of obese individuals associated with the aging of population leads to increasing number of individuals with type 2 diabetes mellitus (T2DM) at the same rate. The traditional factors that link obesity to T2DM are related to genetics, hypercaloric diet, sedentary lifestyle, and stress. Individuals from lower socioeconomic status (SES) have restricted autonomy and opportunities that could lead to more stress and consequently increase in stress hormones, such as cortisol, catecholamines, glucagon, and growth hormone, which might ultimately change fat deposition, increasing visceral fat and increasing the risk of T2DM mellitus development...
June 21, 2017: Current Diabetes Reviews
https://www.readbyqxmd.com/read/28636761/molecular-tools-for-facilitative-carbohydrate-transporters
#19
Marina Tanasova, Joseph R Fedie
Facilitative carbohydrate transporters - Gluts - have received a wide attention over decades due to their essential role in the nutrient uptake and links with various metabolic disorders, including diabetes, obesity, and cancer. Endeavors into understanding mechanisms of Glut-mediated nutrient uptake have resulted in the multidisciplinary research field, branching protein chemistry, chemical biology, organic synthesis, crystallography, and biomolecular modeling. Gluts became attractive targets for cancer research and medicinal chemistry, leading to the development of new approaches to cancer diagnostics and providing avenues for cancer-targeting therapeutics...
June 21, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28636668/microbiota-in-anorexia-nervosa-the-triangle-between-bacterial-species-metabolites-and-psychological-tests
#20
Francesca Borgo, Alessandra Riva, Alberto Benetti, Maria Cristina Casiraghi, Sara Bertelli, Stefania Garbossa, Simona Anselmetti, Silvio Scarone, Antonio E Pontiroli, Giulia Morace, Elisa Borghi
Anorexia nervosa (AN) is a psychiatric disease with devastating physical consequences, with a pathophysiological mechanism still to be elucidated. Metagenomic studies on anorexia nervosa have revealed profound gut microbiome perturbations as a possible environmental factor involved in the disease. In this study we performed a comprehensive analysis integrating data on gut microbiota with clinical, anthropometric and psychological traits to gain new insight in the pathophysiology of AN. Fifteen AN women were compared with fifteen age-, sex- and ethnicity-matched healthy controls...
2017: PloS One
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