keyword
MENU ▼
Read by QxMD icon Read
search

anaerobic metabolism

keyword
https://www.readbyqxmd.com/read/29349635/the-diving-reflex-and-asphyxia-working-across-species-in-physiological-ecology
#1
Joel B Hagen
Beginning in the mid-1930s the comparative physiologists Laurence Irving and Per Fredrik (Pete) Scholander pioneered the study of diving mammals, particularly harbor seals. Although resting on earlier work dating back to the late nineteenth century, their research was distinctive in several ways. In contrast to medically oriented physiology, the approaches of Irving and Scholander were strongly influenced by natural history, zoology, ecology, and evolutionary biology. Diving mammals, they argued, shared the cardiopulmonary physiology of terrestrial mammals, but evolution had modified these basic adaptive processes in extreme ways...
January 18, 2018: History and Philosophy of the Life Sciences
https://www.readbyqxmd.com/read/29349536/oxygen-uptake-efficiency-slope-and-prediction-of-post-operative-morbidity-and-mortality-in-patients-with-lung-cancer
#2
Sertaç Yakal, Sevtün Sofyalı, Berker Özkan, Safinaz Yıldız, Alper Toker, Erdem Kasikcioglu
OBJECTIVE: Peak oxygen consumption is a very valuable cardiopulmonary functional parameter in pre-operative evaluation of patients with lung cancer. However, it has several critical limitations for operability decision due to failure in achieving maximal level of exercise test for cases. The aim of this study was to reveal the importance of more accurate cardiopulmonary parameters that can be calculated from data of submaximal level test, such as oxygen uptake efficiency slope (OUES) and to determine whether it could be used in the operability decision phase for borderline cases by means of morbidity and mortality...
January 18, 2018: Lung
https://www.readbyqxmd.com/read/29344709/microbial-characterization-of-methanogenic-and-iron-reducing-consortium-in-reactors-with-polychlorinated-biphenyls
#3
Mara R de Lima E Silva, Regiane C Correa, Isabel K Sakamoto, Maria B A Varesche
Recent papers have confirmed current environmental pollution and the continuous release of polychlorinated biphenyls (PCBs) despite the prohibition of its manufacture worldwide. As the dehalogenating microorganisms are able to remove halogens from various analogous compounds, the characterization of PCB metabolisms can improve the degradation of similar compounds. Thus, this study extensively evaluated the microbial community developed in methanogenic and iron-reducing reactors. The horizontal-flow anaerobic reactor (HAIB) with real waste of Aroclor (1 mL L-1) was fed with mineral medium, ethanol, and sodium formate...
January 17, 2018: Current Microbiology
https://www.readbyqxmd.com/read/29339722/the-deep-subsurface-sulfate-reducer-desulfotomaculum-kuznetsovii-employs-two-methanol-degrading-pathways
#4
Diana Z Sousa, Michael Visser, Antonie H van Gelder, Sjef Boeren, Mervin M Pieterse, Martijn W H Pinkse, Peter D E M Verhaert, Carsten Vogt, Steffi Franke, Steffen Kümmel, Alfons J M Stams
Methanol is generally metabolized through a pathway initiated by a cobalamine-containing methanol methyltransferase by anaerobic methylotrophs (such as methanogens and acetogens), or through oxidation to formaldehyde using a methanol dehydrogenase by aerobes. Methanol is an important substrate in deep-subsurface environments, where thermophilic sulfate-reducing bacteria of the genus Desulfotomaculum have key roles. Here, we study the methanol metabolism of Desulfotomaculum kuznetsovii strain 17T, isolated from a 3000-m deep geothermal water reservoir...
January 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29337249/regulation-of-lactate-dehydrogenase-in-response-to-wssv-infection-in-the-shrimp-litopenaeus-vannamei
#5
M L E Hernández-Palomares, J A Godoy-Lugo, S Gómez-Jiménez, L A Gámez-Alejo, R M Ortiz, J F Muñoz-Valle, A B Peregrino-Uriarte, G Yepiz-Plascencia, J A Rosas-Rodríguez, J G Soñanez-Organis
Lactate dehydrogenase (LDH) is key for anaerobic glycolysis. LDH is induced by the hypoxia inducible factor -1 (HIF-1). HIF-1 induces genes involved in glucose metabolism and regulates cellular oxygen homeostasis. HIF-1 is formed by a regulatory α-subunit (HIF-1α) and a constitutive β-subunit (HIF-1β). The white spot syndrome virus (WSSV) induces anaerobic glycolysis in shrimp hemocytes, associated with lactate accumulation. Although infection and lactate production are associated, the LDH role in WSSV-infected shrimp has not been examined...
January 11, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29335593/bacterial-iron-reduction-and-biogenic-mineral-formation-for-the-stabilisation-of-corroded-iron-objects
#6
Wafa M Kooli, Lucrezia Comensoli, Julien Maillard, Monica Albini, Arnaud Gelb, Pilar Junier, Edith Joseph
Exploiting bacterial metabolism for the stabilisation of corroded iron artefacts is a promising alternative to conventional conservation-restoration methods. Bacterial iron reduction coupled to biogenic mineral formation has been shown to promote the conversion of reactive into stable corrosion products that are integrated into the natural corrosion layer of the object. However, in order to stabilise iron corrosion, the formation of specific biogenic minerals is essential. In this study, we used the facultative anaerobe Shewanella loihica for the production of stable biogenic iron minerals under controlled chemical conditions...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29331521/increased-transcript-levels-and-kinetic-function-of-pyruvate-kinase-during-severe-dehydration-in-aestivating-african-clawed-frogs-xenopus-laevis
#7
Neal J Dawson, Yulia Biggar, Amal I Malik, Kenneth B Storey
The African clawed frog, Xenopus laevis, can withstand extremely arid conditions through aestivation, resulting in dehydration and urea accumulation. Aestivating X. laevis reduce their metabolic rate, and rely on anaerobic glycolysis to meet reduced ATP demands. The present study investigated how severe dehydration affected the transcript levels, kinetic profile, and phosphorylation state of the key glycolytic enzyme pyruvate kinase (PK) in the liver and skeletal muscle of X. laevis. Compared to control frogs, severely dehydrated frogs showed an increase in the transcript abundance of both liver and muscle isoforms of PK...
January 10, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29327072/naproxen-is-transformed-via-acetogenesis-and-syntrophic-acetate-oxidation-by-a-methanogenic-wastewater-consortium
#8
Sarah J Wolfson, Abigail W Porter, Julia K Campbell, Lily Y Young
Over-the-counter pharmaceutical compounds can serve as microbial substrates in wastewater treatment processes as well as in the environment. The metabolic pathways and intermediates produced during their degradation, however, are poorly understood. In this study, we investigate an anaerobic wastewater community that metabolizes naproxen via demethylation. Enriched cultures, established from anaerobic digester inocula receiving naproxen as the sole carbon source, transformed naproxen to 6-O-desmethylnaproxen (DMN) within 22 days...
January 11, 2018: Microbial Ecology
https://www.readbyqxmd.com/read/29325367/-effects-of-aerobic-exercise-combined-with-resistance-training-on-the-cardiorespiratory-fitness-and-exercise-capacity-of-patients-with-stable-coronary-artery-disease
#9
S X Liu, Y Y Chen, K L Xie, W L Zhang
Objective: To observe the effects of aerobic exercise combined with resistance training on the cardiorespiratory fitness and exercise capacity of patients with stable coronary artery disease (CAD) . Methods: From June 2014 to December 2015, 73 patients with stable CAD in our department were recruited and randomly assigned to two groups: the control group (n=38) and the exercise group (n=35) . Patients in both groups received conventional medical treatment for CAD and related cardiac health education. While for patients in exercise group, a twelve-week aerobic exercise combined with resistance training program were applied on top of conventional treatment and health education...
December 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29324361/simultaneous-removal-of-atrazine-and-organic-matter-from-wastewater-using-anaerobic-moving-bed-biofilm-reactor-a-performance-analysis
#10
Zahra Derakhshan, Amir Hossein Mahvi, Mohammad Taghi Ghaneian, Seyed Mohammad Mazloomi, Mohammad Faramarzian, Mansooreh Dehghani, Hossein Fallahzadeh, Saeed Yousefinejad, Enayat Berizi, Mohammad Hassan Ehrampoush, Shima Bahrami
In this study, an anaerobic moving bed biofilm reactor (AMBBR) was designed to biodegrade atrazine under mesophilic (32 °C) condition and then it was evaluated for approximately 1 year. After biofilm formation, acclimation, and enrichment of microbial population within the bioreactor, the effect of various operation conditions such as changes in the concentration of influent atrazine and sucrose, hydraulic retention time (HRT), and salinity on the removal of atrazine and chemical oxygen demand (COD) were studied...
January 8, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29324294/microbial-community-of-a-gasworks-aquifer-and-identification-of-nitrate-reducing-azoarcus-and-georgfuchsia-as-key-players-in-btex-degradation
#11
Martin Sperfeld, Charlotte Rauschenbach, Gabriele Diekert, Sandra Studenik
We analyzed a coal tar polluted aquifer of a former gasworks site in Thuringia (Germany) for the presence and function of aromatic compound-degrading bacteria (ACDB) by 16S rRNA Illumina sequencing, bamA clone library sequencing and cultivation attempts. The relative abundance of ACDB was highest close to the source of contamination. Up to 44% of total 16S rRNA sequences were affiliated to ACDB including genera such as Azoarcus, Georgfuchsia, Rhodoferax, Sulfuritalea (all Betaproteobacteria) and Pelotomaculum (Firmicutes)...
December 20, 2017: Water Research
https://www.readbyqxmd.com/read/29323266/aif-loss-deregulates-hematopoiesis-and-reveals-different-adaptive-metabolic-responses-in-bone-marrow-cells-and-thymocytes
#12
Lauriane Cabon, Audrey Bertaux, Marie-Noëlle Brunelle-Navas, Ivan Nemazanyy, Laurianne Scourzic, Laure Delavallée, Laura Vela, Mathieu Baritaud, Sandrine Bouchet, Cécile Lopez, Vu Quang Van, Kevin Garbin, Danielle Chateau, Françoise Gilard, Marika Sarfati, Thomas Mercher, Olivier A Bernard, Santos A Susin
Mitochondrial metabolism is a tightly regulated process that plays a central role throughout the lifespan of hematopoietic cells. Herein, we analyze the consequences of the mitochondrial oxidative phosphorylation (OXPHOS)/metabolism disorder associated with the cell-specific hematopoietic ablation of apoptosis-inducing factor (AIF). AIF-null (AIF-/Y ) mice developed pancytopenia that was associated with hypocellular bone marrow (BM) and thymus atrophy. Although myeloid cells were relatively spared, the B-cell and erythroid lineages were altered with increased frequencies of precursor B cells, pro-erythroblasts I, and basophilic erythroblasts II...
January 11, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29321187/infection-by-the-helminth-parasite-fasciola-hepatica-requires-rapid-regulation-of-metabolic-virulence-and-invasive-factors-to-adjust-to-its-mammalian-host
#13
Krystyna Cwiklinski, Heather Jewhurst, Paul McVeigh, Tara Barbour, Aaron G Maule, Jose Tort, Sandra M O'Neill, Mark W Robinson, Sheila Donnelly, John P Dalton
The parasite Fasciola hepatica infects a broad range of mammals with impunity.  Following ingestion of parasites (metacercariae) by the host, newly excysted juveniles (NEJ) emerge from their cysts, rapidly penetrate the duodenal wall and migrate to the liver.  Successful infection takes just a few hours and involves negotiating hurdles presented by host macromolecules, tissues and micro-environments, as well as the immune system.  Here, transcriptome and proteome analysis of ex vivo F. hepatica metacercariae and NEJ reveal the rapidity and multitude of metabolic and developmental alterations that take place in order for the parasite to establish infection...
January 10, 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29320851/stringency-of-synthetic-promoter-sequences-in-clostridium-revealed-and-circumvented-by-tuning-promoter-library-mutation-rates
#14
Pawel Mordaka, John T Heap
Collections of characterized promoters of different strengths are key resources for synthetic biology, but are not well established for many important organisms, including industrially-relevant Clostridium spp. When generating promoters, reporter constructs are used to measure expression, but classical fluorescent reporter proteins are oxygen-dependent and hence inactive in anaerobic bacteria like Clostridium. We directly compared oxygen-independent reporters of different types in Clostridium acetobutylicum and found that glucuronidase (GusA) from E...
January 10, 2018: ACS Synthetic Biology
https://www.readbyqxmd.com/read/29315892/effects-of-fasted-vs-fed-state-exercise-on-performance-and-post-exercise-metabolism-a-systematic-review-meta-analysis
#15
REVIEW
Tom P Aird, Robert W Davies, Brian P Carson
The effects of nutrition on exercise metabolism and performance remains an important topic among sports scientists, clinical, and athletic populations. Recently, fasted exercise has garnered interest as a beneficial stimulus which induces superior metabolic adaptations to fed exercise in key peripheral tissues. Conversely, pre-exercise feeding augments exercise performance compared with fasting conditions. Given these seemingly divergent effects on performance and metabolism, an appraisal of the literature is warranted...
January 6, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29315476/consolidated-bioprocessing-of-lignocellulosic-biomass-to-lactic-acid-by-a-synthetic-fungal-bacterial-consortium
#16
Robert Lawrence Shahab, Jeremy S Luterbacher, Simone Brethauer, Michael Hans-Peter Studer
Consolidated bioprocessing (CBP) of lignocellulosic feedstocks to platform chemicals requires complex metabolic processes, which are commonly executed by single genetically engineered microorganisms. Alternatively, synthetic consortia can be employed to compartmentalize the required metabolic functions among different specialized microorganisms as demonstrated in this work for the direct production of lactic acid from lignocellulosic biomass. We composed an artificial cross-kingdom consortium and co-cultivated the aerobic fungus Trichoderma reesei for the secretion of cellulolytic enzymes with facultative anaerobic lactic acid bacteria...
January 8, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29313349/analysis-of-the-effects-of-%C3%AE-tocopherol-%C3%AE-toh-on-raw264-7-and-k562-cells-based-on-sup-1-sup-h-nmr-metabonomics
#17
Yang Lu, Hui Li, Yue Geng
δ-Tocopherol (δ-TOH) is a form of vitamin E with higher bioactivity. In this study, we studied the bioactivity of δ-TOH using the IC50 of δ-TOH on RAW264.7 (80 μM) and K562 (110 μM) cells. We compared the differential metabolites from the cell lines with and without δ-TOH treatment by 1H-NMR metabonomics analysis. It was found that δ-TOH affected the protein biosynthesis, betaine metabolism, and urea cycle in various ways in both cell lines. Metabolic levels of the cell lines were changed after treatment with δ-TOH as differential metabolites were produced...
January 9, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29311763/the-acute-effects-of-a-multi-ingredient-pre-workout-supplement-on-resting-energy-expenditure-and-exercise-performance-in-recreationally-active-females
#18
Michael Cameron, Clayton L Camic, Scott Doberstein, Jacob L Erickson, Andrew R Jagim
Background: The use of dietary supplements to improve performance is becoming increasingly popular among athletes and fitness enthusiasts. Unfortunately, there is a tremendous lack of research being done regarding female athletes and the use of sport supplements. The purpose of this study was to examine the acute effects of multi-ingredient pre-workout supplement (MIPS) ingestion on resting metabolism and exercise performance in recreationally-active females. Methods: Fifteen recreationally-active females participated in a randomized, double-blind, placebo controlled study...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29306701/methane-supported-nitrate-removal-from-groundwater-in-a-membrane-biofilm-reactor
#19
Jing-Huan Luo, Hui Chen, Zhiguo Yuan, Jianhua Guo
The discovery of denitrifying anaerobic methane oxidation (DAMO) has not only improved our understanding of global methane and nitrogen cycles, but also provided new technology options for removal of nitrate from nitrate-contaminated water. Previous studies have demonstrated DAMO organisms could remove nitrate and nitrite from wastewater under strictly anaerobically conditions. In the study, we investigate the feasibility of nitrate removal from groundwater, which contains dissolved oxygen in addition to nitrate...
December 27, 2017: Water Research
https://www.readbyqxmd.com/read/29305508/comparative-transcriptome-analysis-reveals-the-mechanism-underlying-3-5-dibromo-4-hydroxybenzoate-catabolism-via-a-new-oxidative-decarboxylation-pathway
#20
Kai Chen, Yang Mu, Shanshan Jian, Xiaoxia Zang, Qing Chen, Weibin Jia, Zhuang Ke, Yanzheng Gao, Jiandong Jiang
The compound 3,5-dibromo-4-hydroxybenzoate (DBHB) is both anthropogenically released into and naturally produced in the environment, and its environmental fate is of great concern. Aerobic and anaerobic reductive dehalogenations are the only two reported pathways for DBHB catabolism. In this study, a new oxidative-decarboxylation pathway for DBHB catabolism was identified in a DBHB-utilizing strain of Pigmentiphaga sp. H8. The genetic determinants underlying this pathway were elucidated based on comparative transcriptome analysis and subsequent experimental validation...
January 5, 2018: Applied and Environmental Microbiology
keyword
keyword
13226
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"