keyword
MENU ▼
Read by QxMD icon Read
search

TCA cycle

keyword
https://www.readbyqxmd.com/read/27906079/muscle-specific-loss-of-bmal1-leads-to-disrupted-tissue-glucose-metabolism-and-systemic-glucose-homeostasis
#1
Brianna D Harfmann, Elizabeth A Schroder, Maureen T Kachman, Brian A Hodge, Xiping Zhang, Karyn A Esser
BACKGROUND: Diabetes is the seventh leading cause of death in the USA, and disruption of circadian rhythms is gaining recognition as a contributing factor to disease prevalence. This disease is characterized by hyperglycemia and glucose intolerance and symptoms caused by failure to produce and/or respond to insulin. The skeletal muscle is a key insulin-sensitive metabolic tissue, taking up ~80 % of postprandial glucose. To address the role of the skeletal muscle molecular clock to insulin sensitivity and glucose tolerance, we generated an inducible skeletal muscle-specific Bmal1 (-/-) mouse (iMSBmal1 (-/-))...
March 30, 2016: Skeletal Muscle
https://www.readbyqxmd.com/read/27902743/itraq-based-quantitative-proteomic-analysis-of-spirulina-platensis-in-response-to-low-temperature-stress
#2
Qingye Li, Rong Chang, Yijun Sun, Bosheng Li
Low temperature (LT) is one of the most important abiotic stresses that can significantly reduce crop yield. To gain insight into how Spirulina responds to LT stress, comprehensive physiological and proteomic analyses were conducted in this study. Significant decreases in growth and pigment levels as well as excessive accumulation of compatible osmolytes were observed in response to LT stress. An isobaric tag for relative and absolute quantitation (iTRAQ)-based quantitative proteomics approach was used to identify changes in protein abundance in Spirulina under LT...
2016: PloS One
https://www.readbyqxmd.com/read/27894844/the-tricarboxylic-acid-cycle-activity-in-cultured-primary-astrocytes-is-strongly-accelerated-by-the-protein-tyrosine-kinase-inhibitor-tyrphostin-23
#3
Michaela C Hohnholt, Eva-Maria Blumrich, Helle S Waagepetersen, Ralf Dringen
Tyrphostin 23 (T23) is a well-known inhibitor of protein tyrosine kinases and has been considered as potential anti-cancer drug. T23 was recently reported to acutely stimulate the glycolytic flux in primary cultured astrocytes. To investigate whether T23 also affects the tricarboxylic acid (TCA) cycle, we incubated primary rat astrocyte cultures with [U-(13)C]glucose in the absence or the presence of 100 μM T23 for 2 h and analyzed the (13)C metabolite pattern. These incubation conditions did not compromise cell viability and confirmed that the presence of T23 doubled glycolytic lactate production...
November 25, 2016: Neurochemistry International
https://www.readbyqxmd.com/read/27892481/autophagy-is-required-for-pdac-glutamine-metabolism
#4
Ju-Won Seo, Jungwon Choi, So-Yeon Lee, Suhyun Sung, Hyun Ju Yoo, Min-Ji Kang, Heesun Cheong, Jaekyoung Son
Macroautophagy (autophagy) is believed to maintain energy homeostasis by degrading unnecessary cellular components and molecules. Its implication in regulating cancer metabolism recently started to be uncovered. However, the precise roles of autophagy in cancer metabolism are still unclear. Here, we show that autophagy plays a critical role in glutamine metabolism, which is required for tumor survival. Pancreatic ductal adenocarcinoma (PDAC) cells require both autophagy and typical glutamine transporters to maintain intracellular glutamine levels...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27889640/inhibition-of-autophagy-with-bafilomycin-and-chloroquine-decreases-mitochondrial-quality-and-bioenergetic-function-in-primary-neurons
#5
Matthew Redmann, Gloria A Benavides, Taylor F Berryhill, Willayat Y Wani, Xiaosen Ouyang, Michelle S Johnson, Saranya Ravi, Stephen Barnes, Victor M Darley-Usmar, Jianhua Zhang
Autophagy is an important cell recycling program responsible for the clearance of damaged or long-lived proteins and organelles. Pharmacological modulators of this pathway have been extensively utilized in a wide range of basic research and pre-clinical studies. Bafilomycin A1 and chloroquine are commonly used compounds that inhibit autophagy by targeting the lysosomes but through distinct mechanisms. Since it is now clear that mitochondrial quality control, particularly in neurons, is dependent on autophagy, it is important to determine whether these compounds modify cellular bioenergetics...
November 18, 2016: Redox Biology
https://www.readbyqxmd.com/read/27885626/anaplerosis-for-glutamate-synthesis-in-the-neonate-and-in-adulthood
#6
Eva Brekke, Tora Sund Morken, Anne B Walls, Helle Waagepetersen, Arne Schousboe, Ursula Sonnewald
A central task of the tricarboxylic acid (TCA, Krebs, citric acid) cycle in brain is to provide precursors for biosynthesis of glutamate, GABA, aspartate and glutamine. Three of these amino acids are the partners in the intricate interaction between astrocytes and neurons and form the so-called glutamine-glutamate (GABA) cycle. The ketoacids α-ketoglutarate and oxaloacetate are removed from the cycle for this process. When something is removed from the TCA cycle it must be replaced to permit the continued function of this essential pathway, a process termed anaplerosis...
2016: Advances in Neurobiology
https://www.readbyqxmd.com/read/27884580/a-benzimidazole-derivative-rcb20-in%C3%A2-vitro-induces-an-activation-of-energetic-pathways-on-taenia-crassiceps-orf-strain-cysticerci
#7
Carolina Miguel Fraga, Tatiane Luiza da Costa, Ana Maria de Castro, Olivia Reynoso-Ducoing, Javier Ambrosio, Alicia Hernández-Campos, Rafael Castillo, Marina Clare Vinaud
Human cysticercosis caused by Taenia crassiceps is unusual; however, it is an useful experimental model for cysticercosis studies. Benzimidazole derivatives are important antihelminthic drugs widely used against helminths. A novel compound 6-chloro-5-(1-naphthyloxy) -2-(trifluoromethyl)-1H-benzimidazole (RCB20) is a benzimidazole derivative less polar and more lipophilic. The aim of this study was to detect the effect of the RCB20 on the in vitro energetic metabolism of T. crassiceps cysticerci. For this, products of the metabolism both produced and secreted/excreted (S/E) by the parasite were detected through spectrophotometry and high performance liquid chromatography after exposure to 6...
November 21, 2016: Experimental Parasitology
https://www.readbyqxmd.com/read/27881557/plasma-metabolomics-implicate-modified-transfer-rnas-and-altered-bioenergetics-in-the-outcome-of-pulmonary-arterial-hypertension
#8
Christopher J Rhodes, Pavandeep Ghataorhe, John Wharton, Kevin C Rue-Albrecht, Charaka Hadinnapola, Geoffrey Watson, Marta Bleda, Matthias Haimel, Gerry Coghlan, Paul A Corris, Luke S Howard, David G Kiely, Andrew J Peacock, Joanna Pepke-Zaba, Mark Toshner, Stephen J Wort, J Simon R Gibbs, Allan Lawrie, Stefan Gräf, Nicholas W Morrell, Martin R Wilkins
BACKGROUND: -Pulmonary arterial hypertension (PAH) is a heterogeneous disorder with high mortality. METHODS: -We conducted a comprehensive study of plasma metabolites using ultra-performance liquid chromatography mass-spectrometry to (1) identify patients at high risk of early death, (2) identify patients who respond well to treatment and (3) provide novel molecular insights into disease pathogenesis. RESULTS: -53 circulating metabolites distinguished well-phenotyped patients with idiopathic or heritable PAH (n=365) from healthy controls (n=121) following correction for multiple testing (p<7...
November 21, 2016: Circulation
https://www.readbyqxmd.com/read/27879330/quantitative-transcriptomics-reveals-the-growth-and-nutrient-dependent-response-of-a-streamlined-marine-methylotroph-to-methanol-and-naturally-occurring-dissolved-organic-matter
#9
Scott M Gifford, Jamie W Becker, Oscar A Sosa, Daniel J Repeta, Edward F DeLong
The members of the OM43 clade of Betaproteobacteria are abundant coastal methylotrophs with a range of carbon-utilizing capabilities. However, their underlying transcriptional and metabolic responses to shifting conditions or different carbon substrates remain poorly understood. We examined the transcriptional dynamics of OM43 isolate NB0046 subjected to various inorganic nutrient, vitamin, and carbon substrate regimes over different growth phases to (i) develop a quantitative model of its mRNA content; (ii) identify transcriptional markers of physiological activity, nutritional state, and carbon and energy utilization; and (iii) identify pathways involved in methanol or naturally occurring dissolved organic matter (DOM) metabolism...
November 22, 2016: MBio
https://www.readbyqxmd.com/read/27876792/mtorc1-is-required-for-brown-adipose-tissue-recruitment-and-metabolic-adaptation-to-cold
#10
Sébastien M Labbé, Mathilde Mouchiroud, Alexandre Caron, Blandine Secco, Elizaveta Freinkman, Guillaume Lamoureux, Yves Gélinas, Roger Lecomte, Yohan Bossé, Patricia Chimin, William T Festuccia, Denis Richard, Mathieu Laplante
In response to cold, brown adipose tissue (BAT) increases its metabolic rate and expands its mass to produce heat required for survival, a process known as BAT recruitment. The mechanistic target of rapamycin complex 1 (mTORC1) controls metabolism, cell growth and proliferation, but its role in regulating BAT recruitment in response to chronic cold stimulation is unknown. Here, we show that cold activates mTORC1 in BAT, an effect that depends on the sympathetic nervous system. Adipocyte-specific mTORC1 loss in mice completely blocks cold-induced BAT expansion and severely impairs mitochondrial biogenesis...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27871140/metabolic-response-of-agrobacterium-tumefaciens-5a-to-arsenite
#11
Monika Tokmina-Lukaszewska, Zunji Shi, Brian Tripet, Timothy R McDermott, Valérie Copié, Brian Bothner, Gejiao Wang
Wide-spread abundance in soil and water, coupled with high toxicity have put arsenic at the top of the list of environmental contaminants. Early studies demonstrated that both concentration and the valence state of inorganic arsenic (arsenite, As(III) vs. arsenate As(V)) can be modulated by microbes. Using genetics, transcriptomic and proteomic techniques, microbe-arsenic detoxification, respiratory As(V) reduction, and As(III) oxidation have since been examined. The effect of arsenic exposure on whole-cell intracellular microbial metabolism, however, has not been extensively studied...
November 21, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27868154/alternative-fuels-in-epilepsy-and-amyotrophic-lateral-sclerosis
#12
Tesfaye W Tefera, Kah Ni Tan, Tanya S McDonald, Karin Borges
This review summarises the recent findings on metabolic treatments for epilepsy and Amyotrophic Lateral Sclerosis (ALS) in honour of Professor Ursula Sonnewald. The metabolic impairments in rodent models of these disorders as well as affected patients are being discussed. In both epilepsy and ALS, there are defects in glucose uptake and reduced tricarboxylic acid (TCA) cycling, at least in part due to reduced amounts of C4 TCA cycle intermediates. In addition there are impairments in glycolysis in ALS. A reduction in glucose uptake can be addressed by providing the brain with alternative fuels, such as ketones or medium-chain triglycerides...
November 21, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27867934/a-comparison-of-molecular-biology-mechanism-of-shewanella-putrefaciens-between-fresh-and-terrestrial-sewage-wastewater
#13
Jiajie Xu, Weina He, Zhonghua Wang, Dijun Zhang, Jing Sun, Jun Zhou, Yanyan Li, Xiurong Su
Municipal and industrial wastewater is often discharged into the environment without appropriate treatment, especially in developing countries. As a result, many rivers and oceans are contaminated. It is urgent to control and administer treatments to these contaminated rivers and oceans. However, most mechanisms of bacterial colonization in contaminated rivers and oceans were unknown, especially in sewage outlets. We found Shewanella putrefaciens to be the primary bacteria in the terrestrial sewage wastewater outlets around Ningbo City, China...
2016: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/27867835/combined-13-c-assisted-metabolomics-and-metabolic-flux-analysis-reveals-the-impacts-of-glutamate-on-the-central-metabolism-of-high-%C3%AE-galactosidase-producing-pichia-pastoris
#14
Ping Liu, Mingzhi Huang, Menglei Guo, Jiangchao Qian, Weilu Lin, Ju Chu, Yingping Zhuang, Siliang Zhang
BACKGROUND: Pichia pastoris is a popular recombinant protein expression system for its accessibility of efficient gene manipulation and high protein production. Sufficient supply of precursors, energy, and redox cofactors is crucial for high recombinant protein production. In our present work, we found that the addition of glutamate improved the recombinant β-galactosidase (β-gal) production by P. pastoris G1HL. METHODS: To elucidate the impacts of glutamate on the central metabolism in detail, a combined (13)C-assisted metabolomics and (13)C metabolic flux analysis was conducted based on LC-MS/MS and GC-MS data...
2016: Bioresources and Bioprocessing
https://www.readbyqxmd.com/read/27866838/glutaminolysis-and-fumarate-accumulation-integrate-immunometabolic-and-epigenetic-programs-in-trained-immunity
#15
Rob J W Arts, Boris Novakovic, Rob Ter Horst, Agostinho Carvalho, Siroon Bekkering, Ekta Lachmandas, Fernando Rodrigues, Ricardo Silvestre, Shih-Chin Cheng, Shuang-Yin Wang, Ehsan Habibi, Luís G Gonçalves, Inês Mesquita, Cristina Cunha, Arjan van Laarhoven, Frank L van de Veerdonk, David L Williams, Jos W M van der Meer, Colin Logie, Luke A O'Neill, Charles A Dinarello, Niels P Riksen, Reinout van Crevel, Clary Clish, Richard A Notebaart, Leo A B Joosten, Hendrik G Stunnenberg, Ramnik J Xavier, Mihai G Netea
Induction of trained immunity (innate immune memory) is mediated by activation of immune and metabolic pathways that result in epigenetic rewiring of cellular functional programs. Through network-level integration of transcriptomics and metabolomics data, we identify glycolysis, glutaminolysis, and the cholesterol synthesis pathway as indispensable for the induction of trained immunity by β-glucan in monocytes. Accumulation of fumarate, due to glutamine replenishment of the TCA cycle, integrates immune and metabolic circuits to induce monocyte epigenetic reprogramming by inhibiting KDM5 histone demethylases...
November 16, 2016: Cell Metabolism
https://www.readbyqxmd.com/read/27859397/global-transcriptomic-response-of-anoxybacillus-sp-sk-3-4-to-aluminum-exposure
#16
Jia Chun Lim, Suganthi Thevarajoo, Chitra Selvaratnam, Kian Mau Goh, Mohd Shahir Shamsir, Zaharah Ibrahim, Chun Shiong Chong
Anoxybacillus sp. SK 3-4 is a Gram-positive, rod-shaped bacterium and a member of family Bacillaceae. We had previously reported that the strain is an aluminum resistant thermophilic bacterium. This is the first report to provide a detailed analysis of the global transcriptional response of Anoxybacillus when the cells were exposed to 600 mg L(-1) of aluminum. The transcriptome was sequenced using Illumina MiSeq sequencer. Total of 708 genes were differentially expressed (fold change >2.00) with 316 genes were up-regulated while 347 genes were down-regulated, in comparing to control with no aluminum added in the culture...
November 17, 2016: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/27856334/quantitative-metabolic-flux-analysis-reveals-an-unconventional-pathway-of-fatty-acid-synthesis-in-cancer-cells-deficient-for-the-mitochondrial-citrate-transport-protein
#17
Lei Jiang, Adam Boufersaoui, Chendong Yang, Bookyung Ko, Dinesh Rakheja, Gerardo Guevara, Zeping Hu, Ralph J DeBerardinis
The mitochondrial citrate transport protein (CTP), encoded by SLC25A1, accommodates bidirectional trafficking of citrate between the mitochondria and cytosol, supporting lipid biosynthesis and redox homeostasis. Genetic CTP deficiency causes a fatal neurodevelopmental syndrome associated with the accumulation of L- and D-2-hydroxyglutaric acid, and elevated CTP expression is associated with poor prognosis in several types of cancer, emphasizing the importance of this transporter in multiple human pathologies...
November 14, 2016: Metabolic Engineering
https://www.readbyqxmd.com/read/27856104/the-investigation-of-anti-inflammatory-activity-of-yi-guanjian-decoction-by-serum-metabonomics-approach
#18
Sufang Shui, Xiaorong Cai, Rongqing Huang, Bingkun Xiao, Jianyun Yang
Yi Guanjian (YGJ), one of the Chinese herbal medicines most commonly used in western countries, reported to possess significant anti-inflammatary effects that inhibit the process of inflammation. However, the mechanisms underlying its anti-inflammation effects remain largely unresolved. This study was aimed to investigate the anti-inflammatory activity of YGJ and to explore its potential anti-inflammatory mechanisms by serum metabonomics approach. An xylene-induced mouse right-ear-edema model was used as an inflammatory response in vivo model...
January 30, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/27848206/tanshinone-i-attenuates-the-effects-of-a-challenge-with-h2o2-on-the-functions-of-tricarboxylic-acid-cycle-and-respiratory-chain-in-sh-sy5y-cells
#19
Marcos Roberto de Oliveira, Cristina Ribas Fürstenau, Izabel Cristina Custódio de Souza, Gustavo da Costa Ferreira
Tanshinone I (T-I; C18H12O3) is a cytoprotective molecule. T-I has been viewed as an antioxidant and anti-inflammatory agent exerting neuroprotective actions in several experimental models. Nonetheless, the mechanisms underlying the beneficial effects of T-I in mammalian cells are not completely understood yet. Mitochondrial dysfunction has been associated with several neurodegenerative diseases which remain uncured. Therefore, there is increasing interest in compounds that may be used in the prevention or treatment of those pathologies...
November 15, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27844170/comparative-analysis-of-the-corynebacterium-glutamicum-transcriptome-in-response-to-changes-in-dissolved-oxygen-levels
#20
Xiuxia Liu, Sun Yang, Fen Wang, Xiaofeng Dai, Yankun Yang, Zhonghu Bai
The dissolved oxygen (DO) level of a culture of Corynebacterium glutamicum (C. glutamicum) in a bioreactor has a significant impact on the cellular redox potential and the distribution of energy and metabolites. In this study, to gain a deeper understanding of the effects of DO on the metabolism of C. glutamicum, we sought to systematically explore the influence of different DO concentrations on genetic regulation and metabolism through transcriptomic analysis. The results revealed that after 20 h of fermentation, oxygen limitation enhanced the glucose metabolism, pyruvate metabolism and carbon overflow, and restricted NAD(+) availability...
November 14, 2016: Journal of Industrial Microbiology & Biotechnology
keyword
keyword
80425
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"