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Carbohydrate metabolism

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https://www.readbyqxmd.com/read/28550811/influence-of-solids-residence-time-and-carbon-storage-on-nitrogen-and-phosphorus-recovery-by-microalgae-across-diel-cycles
#1
D A Gardner-Dale, I M Bradley, J S Guest
Microalgal treatment systems could advance nutrient recovery from wastewater by achieving effluent nitrogen (N) and phosphorus (P) levels below the current limit of technology, but their successful implementation requires an understanding of how design decisions influence nutrient uptake over daily (i.e., diel) cycles. This work demonstrates the ability to influence microalgal N:P recovery ratio via solids residence time (SRT) while maintaining complete nutrient removal across day/night cycles through carbon storage and mobilization...
May 18, 2017: Water Research
https://www.readbyqxmd.com/read/28550631/study-on-substrate-metabolism-process-of-saline-waste-sludge-and-its-biological-hydrogen-production-potential
#2
Zengshuai Zhang, Liang Guo, Qianqian Li, Yangguo Zhao, Mengchun Gao, Zonglian She
With the increasing of high saline waste sludge production, the treatment and utilization of saline waste sludge attracted more and more attention. In this study, the biological hydrogen production from saline waste sludge after heating pretreatment was studied. The substrate metabolism process at different salinity condition was analyzed by the changes of soluble chemical oxygen demand (SCOD), carbohydrate and protein in extracellular polymeric substances (EPS), and dissolved organic matters (DOM). The excitation-emission matrix (EEM) with fluorescence regional integration (FRI) was also used to investigate the effect of salinity on EPS and DOM composition during hydrogen fermentation...
May 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28548658/distinctive-microbiomes-and-metabolites-linked-with-weight-loss-after-gastric-bypass-but-not-gastric-banding
#3
Zehra Esra Ilhan, John K DiBaise, Nancy G Isern, David W Hoyt, Andrew K Marcus, Dae-Wook Kang, Michael D Crowell, Bruce E Rittmann, Rosa Krajmalnik-Brown
Roux-en-Y gastric bypass (RYGB) and laparoscopic adjustable gastric banding (LAGB) are anatomically different bariatric operations. RYGB achieves greater weight loss compared with LAGB. Changes in the gut microbiome have been documented after RYGB, but not LAGB, and the microbial contribution to sustainable surgical weight loss warrants further evaluation. We hypothesized that RYGB imposes greater changes on the microbiota and its metabolism than LAGB, and that the altered microbiota may contribute to greater weight loss...
May 26, 2017: ISME Journal
https://www.readbyqxmd.com/read/28548389/night-shift-work-is-associated-with-poorer-glycaemic-control-in-patients-with-type-2-diabetes
#4
Areesa Manodpitipong, Sunee Saetung, Hataikarn Nimitphong, Nantaporn Siwasaranond, Thanawat Wongphan, Chotima Sornsiriwong, Pranee Luckanajantachote, Prasitchai Mangjit, Prasit Keesukphan, Stephanie J Crowley, Megan M Hood, Sirimon Reutrakul
The circadian system plays a role in regulating metabolism. Night-shift work, a form of circadian misalignment, is associated with increased type 2 diabetes risk. This study aimed to determine if night-shift workers with type 2 diabetes experience poorer glycaemic control than non-shift workers. Patients with type 2 diabetes (104 unemployed, 85 day workers and 60 night-shift workers) participated. Sleep duration, sleep quality, morningness-eveningness preference, depressive symptoms and dietary intake were assessed using standardized questionnaires...
May 26, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28545937/treatment-of-nafld-with-diet-physical-activity-and-exercise
#5
REVIEW
Manuel Romero-Gómez, Shira Zelber-Sagi, Michael Trenell
Lifestyle intervention can be useful across all the spectrum of NAFLD patients. Losing weight decreases cardiovascular / diabetes risk and also regresses liver disease. Weight reductions of ≥ 10% are required for inducing near universal NASH resolution or fibrosis improvement by at least one stage. However, modest weight losses (>5%) also produce important benefits on NAS and its components. In addition, to improve the success of this intervention we need to explore, beyond total calories and type of weight loss diet, the role of micro and macronutrients, evidence-based benefits of physical activity and exercise and finally supporting these modifications through established behaviour change models and techniques...
May 22, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28544894/regulation-of-maize-kernel-weight-and-carbohydrate-metabolism-by-abscisic-acid-applied-at-the-early-and-middle-post-pollination-stages-in-vitro
#6
Li Zhang, Xu-Hui Li, Zhen Gao, Si Shen, Xiao-Gui Liang, Xue Zhao, Shan Lin, Shun-Li Zhou
Abscisic acid (ABA) accumulates in plants under drought stress, but views on the role of ABA in kernel formation and abortion are not unified. The response of the developing maize kernel to exogenous ABA was investigated by excising kernels from cob sections at four days after pollination and culturing in vitro with different concentrations of ABA (0, 5, 10, 100μM). When ABA was applied at the early post-pollination stage (EPPS), significant weight loss was observed at high ABA concentration (100μM), which could be attributed to jointly affected sink capacity and activity...
May 10, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28544235/absence-of-juvenile-hormone-signalling-regulates-the-dynamic-expression-profiles-of-nutritional-metabolism-genes-during-diapause-preparation-in-the-cabbage-beetle-colaphellus-bowringi
#7
W Liu, Q-Q Tan, L Zhu, Y Li, F Zhu, C-L Lei, X-P Wang
Temperate insects have evolved diapause, a period of programmed developmental arrest during specific life stages, to survive unfavourable conditions. During the diapause preparation phase (DPP), diapause-destined individuals generally store large amounts of fat by regulating nutrition distribution for the energy requirement during diapause maintenance and postdiapause development. Although nutritional patterns during the DPP have been investigated at physiological and biochemical levels in many insects, it remains largely unknown how nutritional metabolism is regulated during the DPP at molecular levels...
May 20, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/28543565/lactate-supplementation-in-severe-traumatic-brain-injured-adults-by-primed-constant-infusion-of-sodium-l-lactate
#8
Stephanie M Wolahan, Howard C Mao, Courtney Real, Paul M Vespa, Thomas C Glenn
Carbohydrate fuel augmentation following traumatic brain injury may be a viable treatment to improve recovery when cerebral oxidative metabolism of glucose is depressed. We performed a primed constant sodium L-lactate infusion in 11 moderate to severely brain injured adults. Blood was collected before and periodically during the infusion study. We quantified global cerebral uptake of glucose and lactate and other systemic metabolites associated with energy metabolism. Our hypothesis was that cerebral lactate uptake, as measured by the arteriovenous difference of lactate (AVDlac), would increase in severely injured TBI patients in the neurocritical care unit...
May 20, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28543022/sedentary-behaviour-is-a-key-determinant-of-metabolic-inflexibility
#9
Corey A Rynders, Stephane Blanc, Nathan DeJong, Daniel H Bessesen, Audrey Bergouignan
Metabolic flexibility is defined as the ability to adapt substrate oxidation rates in response to changes in fuel availability. The inability to switch between the oxidation of lipid and carbohydrate appears to be an important feature of chronic disorders such as obesity and type 2 diabetes. Laboratory assessment of metabolic flexibility has traditionally involved measurement of the respiratory quotient (RQ) by indirect calorimetry during the fasted to fed transition (e.g. mixed meal challenge) or during a hyperinsulinemic-euglycemic clamp...
May 24, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28542566/proteomic-analysis-in-the-dufour-s-gland-of-africanized-apis-mellifera-workers-hymenoptera-apidae
#10
Aparecida das Dores Teixeira, Patricia D Games, Benjamin B Katz, John M Tomich, José C Zanuncio, José Eduardo Serrão
The colony of eusocial bee Apis mellifera has a reproductive queen and sterile workers performing tasks such as brood care and foraging. Chemical communication plays a crucial role in the maintenance of sociability in bees with many compounds released by the exocrine glands. The Dufour's gland is a non-paired gland associated with the sting apparatus with important functions in the communication between members of the colony, releasing volatile chemicals that influence workers roles and tasks. However, the protein content in this gland is not well studied...
2017: PloS One
https://www.readbyqxmd.com/read/28542212/proteome-dynamics-of-cold-acclimating-rhododendron-species-contrasting-in-their-freezing-tolerance-and-thermonasty-behavior
#11
Jose V Die, Rajeev Arora, Lisa J Rowland
To gain a better understanding of cold acclimation in rhododendron and in woody perennials in general, we used the 2D-DIGE technique to analyze the rhododendron proteome during the seasonal development of freezing tolerance. We selected two species varying in their cold acclimation ability as well as their thermonasty response (folding of leaves in response to low temperature). Proteins were extracted from leaves of non-acclimated (NA) and cold acclimated (CA) plants of the hardier thermonastic species, R. catawbiense (Cata...
2017: PloS One
https://www.readbyqxmd.com/read/28541810/effects-of-a-carbohydrate-glutamine-and-antioxidant-enriched-oral-nutrition-supplement-on-major-surgery-induced-insulin-resistance-a-randomized-pilot-study
#12
Mireille F M van Stijn, Maarten R Soeters, Paul A M van Leeuwen, W H Schreurs, Margreet G Schoorl, Jos W R Twisk, Jean-Pascal De Bandt, Dominique Bonnefont-Rousselot, Luc Cynober, Mariette T Ackermans, Mireille J Serlie, Alexander P J Houdijk
BACKGROUND: Insulin resistance after surgery hampers recovery. Oxidative stress is shown to be involved in the occurrence of postoperative insulin resistance. Preoperative carbohydrate-rich oral nutrition supplements reduce but do not prevent insulin resistance. The aim of the present study was to investigate the effect of a carbohydrate-, glutamine-, and antioxidant-enriched preoperative oral nutrition supplement on postoperative insulin resistance. METHODS: A double-blind randomized controlled pilot study in 18 patients with rectal cancer, who received either the supplement (S) or the placebo (P) 15, 11, and 4 hours preoperatively, was conducted...
May 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28540101/health-status-and-lifestyle-habits-of-us-medical-students-a-longitudinal-study
#13
B J Brehm, S S Summer, J C Khoury, A T Filak, M A Lieberman, J E Heubi
BACKGROUND: Evidence shows that physicians and medical students who engage in healthy lifestyle habits are more likely to counsel patients about such behaviors. Yet medical school is a challenging time that may bring about undesired changes to health and lifestyle habits. AIMS: This study assessed changes in students' health and lifestyle behaviors during medical school. SUBJECTS AND METHODS: In a longitudinal study, students were assessed at both the beginning and end of medical school...
November 2016: Annals of Medical and Health Sciences Research
https://www.readbyqxmd.com/read/28539641/revealing-the-insoluble-metasecretome-of-lignocellulose-degrading-microbial-communities
#14
Anna M Alessi, Susannah M Bird, Joseph P Bennett, Nicola C Oates, Yi Li, Adam A Dowle, Igor Polikarpov, J Peter W Young, Simon J McQueen-Mason, Neil C Bruce
Microbial communities metabolize plant biomass using secreted enzymes; however, identifying extracellular proteins tightly bound to insoluble lignocellulose in these microbiomes presents a challenge, as the rigorous extraction required to elute these proteins also lyses the microbes associated with the plant biomass releasing intracellular proteins that contaminate the metasecretome. Here we describe a technique for targeting the extracellular proteome, which was used to compare the metasecretome and meta-surface-proteome of two lignocellulose-degrading communities grown on wheat straw and rice straw...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28538729/cryo-em-structure-of-the-activated-glp-1-receptor-in-complex-with-a-g-protein
#15
Yan Zhang, Bingfa Sun, Dan Feng, Hongli Hu, Matthew Chu, Qianhui Qu, Jeffrey T Tarrasch, Shane Li, Tong Sun Kobilka, Brian K Kobilka, Georgios Skiniotis
Glucagon-like peptide 1 (GLP-1) is a hormone with essential roles in regulating insulin secretion, carbohydrate metabolism and appetite. GLP-1 effects are mediated through binding to the GLP-1 receptor (GLP-1R), a class B G-protein-coupled receptor (GPCR) that signals primarily through the stimulatory G protein Gs. Class B GPCRs are important therapeutic targets; however, our understanding of their mechanism of action is limited by the lack of structural information on activated and full-length receptors. Here we report the cryo-electron microscopy structure of the peptide-activated GLP-1R-Gs complex at near atomic resolution...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28537802/seasonal-pattern-in-bipolar-disorders-and-cardio-vascular-risk-factors-a-study-from-the-face-bd-cohort
#16
Pierre A Geoffroy, Ophelia Godin, Diane Mahee, Chantal Henry, Valérie Aubin, Jean-Michel Azorin, Thierry Bougerol, Philippe Courtet, Sébastien Gard, Jean-Pierre Kahn, Christine Passerieux, Marion Leboyer, Frank Bellivier, Bruno Etain
Seasonal pattern (SP) and metabolic syndrome (MetS) are major contributors to poor outcome in bipolar disorders (BD). Patients with seasonal bipolar depression present increased appetite, carbohydrate cravings, weight gain, and hypersomnia, which can increase the development of MetS. MetS also appears to be associated with seasonal mood changes in the general population. This study examines whether a SP in BD is associated with an increased risk of MetS and its sub-components. One thousand four hundred and seventy-one outpatients with BD were systematically enrolled from 2009 to 2016...
May 24, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28536293/peroxisome-proliferator-activated-receptor-%C3%AE-agonism-attenuates-endotoxaemia-induced-muscle-protein-loss-and-lactate-accumulation-in%C3%A2-rats
#17
Hannah Crossland, Dumitru Constantin-Teodosiu, Sheila Gardiner, Paul Greenhaff
The peroxisome proliferator-activated receptor γ (PPARγ) agonist rosiglitazone (Rosi) appears to provide protection against organ dysfunction during endotoxaemia. We examined the potential benefits of Rosi on skeletal muscle protein maintenance and carbohydrate metabolism during lipopolysaccharide (LPS)-induced endotoxaemia. Sprague-Dawley rats were fed either standard chow (control) or standard chow containing Rosi (8.5±0.1 mg(.)kg(-1.)day(-1)) for two weeks before and during 24 h continuous intravenous infusion of LPS (15 μg(...
May 23, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28534852/effects-of-ketogenic-diets-on-cardiovascular-risk-factors-evidence-from-animal-and-human-studies
#18
REVIEW
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 as a therapy and is aimed at improving some of the components of the metabolic syndrome. Among various diets, ketogenic diets, which are very low in carbohydrates and usually high in fats and/or proteins, have gained in popularity. Results regarding the impact of such diets on cardiovascular risk factors are controversial, both in animals and humans, but some improvements notably in obesity and type 2 diabetes have been described...
May 19, 2017: Nutrients
https://www.readbyqxmd.com/read/28534821/from-genome-to-phenotype-an-integrative-approach-to-evaluate-the-biodiversity-of-lactococcus-lactis
#19
REVIEW
Valérie Laroute, Hélène Tormo, Christel Couderc, Muriel Mercier-Bonin, Pascal Le Bourgeois, Muriel Cocaign-Bousquet, Marie-Line Daveran-Mingot
Lactococcus lactis is one of the most extensively used lactic acid bacteria for the manufacture of dairy products. Exploring the biodiversity of L. lactis is extremely promising both to acquire new knowledge and for food and health-driven applications. L. lactis is divided into four subspecies: lactis, cremoris, hordniae and tructae, but only subsp. lactis and subsp. cremoris are of industrial interest. Due to its various biotopes, Lactococcus subsp. lactis is considered the most diverse. The diversity of L...
May 19, 2017: Microorganisms
https://www.readbyqxmd.com/read/28533314/exercise-metabolism-fuels-for-the-fire
#20
Mark Hargreaves, Lawrence L Spriet
During exercise, the supply of adenosine triphosphate (ATP) is essential for the energy-dependent processes that underpin ongoing contractile activity. These pathways involve both substrate-level phosphorylation, without any need for oxygen, and oxidative phosphorylation that is critically dependent on oxygen delivery to contracting skeletal muscle by the respiratory and cardiovascular systems and on the supply of reducing equivalents from the degradation of carbohydrate, fat, and, to a limited extent, protein fuel stores...
May 22, 2017: Cold Spring Harbor Perspectives in Medicine
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