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Increased metabolism

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https://www.readbyqxmd.com/read/29223110/systemic-inflammatory-markers-associated-with-cardiovascular-disease-and-acute-and-chronic-exposure-to-fine-particulate-matter-air-pollution-pm2-5-among-us-nhanes-adults-with-metabolic-syndrome
#1
Arvind Dabass, Evelyn O Talbott, Judith R Rager, Gary M Marsh, Arvind Venkat, Fernando Holguin, Ravi K Sharma
BACKGROUND: There has been no investigation to date of adults with metabolic syndrome examining the association of short and long-term exposure to fine particulate matter (PM2.5) air pollution with cardiovascular-disease related inflammatory marker (WBC and CRP) levels in a nationally representative sample. The goal of this study is to assess the susceptibility of adults with metabolic syndrome to PM2.5 exposure as suggested by increased cardiovascular-disease related inflammatory marker levels...
December 6, 2017: Environmental Research
https://www.readbyqxmd.com/read/29223021/pre-treatment-of-soybean-plants-with-calcium-stimulates-ros-responses-and-mitigates-infection-by-sclerotinia-sclerotiorum
#2
Arbia Arfaoui, Abdelbasset El Hadrami, Fouad Daayf
Considering the high incidence of white mold caused by Sclerotinia sclerotiorum in a variety of field crops and vegetables, different control strategies are needed to keep the disease under economical threshold. This study assessed the effect of foliar application of a calcium formulation on disease symptoms, oxalic acid production, and on the oxidative stress metabolism in soybean plants inoculated with each of two isolates of the pathogen that have contrasting aggressiveness (HA, highly-aggressive versus WA, weakly-aggressive)...
November 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29223004/towards-utilization-of-the-human-genome-and-microbiome-for-personalized-nutrition
#3
REVIEW
Stavros Bashiardes, Anastasia Godneva, Eran Elinav, Eran Segal
Generalized dietary and lifestyle guidelines have been formulated and published for decades now from a variety of relevant agencies in an attempt to guide people towards healthy choices. As the pandemic rise in metabolic diseases continues to increase, it has become clear that the one-fit-for-all diet approach does not work and that there is a significant variation in inter-individual responses to diet and lifestyle interventions. Recent technological advances have given an unprecedented insight into the sources of this variation, pointing towards our genome and microbiome as potentially and previously under-explored culprits contributing to individually unique dietary responses...
December 6, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29222967/stimulation-of-the-endogenous-incretin-glucose-dependent-insulinotropic-peptide-by-enteral-dextrose-improves-glucose-homeostasis-and-inflammation-in-murine-endotoxemia
#4
Faraaz Ali Shah, Srikanth Singamsetty, Lanping Guo, Byron W Chuan, Sherie McDonald, Bryce A Cooper, Brett J O'Donnell, Darko Stefanovski, Burton Wice, Yingze Zhang, Christopher P O'Donnell, Bryan J McVerry
Loss of glucose homeostasis during sepsis is associated with increased organ dysfunction and higher mortality. Novel therapeutic strategies to promote euglycemia in sepsis are needed. We have previously shown that early low-level intravenous (IV) dextrose suppresses pancreatic insulin secretion and induces insulin resistance in septic mice, resulting in profound hyperglycemia and worsened systemic inflammation. In this study, we hypothesized that administration of low-level dextrose via the enteral route would stimulate intestinal incretin hormone production, potentiate insulin secretion in a glucose-dependent manner, and thereby improve glycemic control in the acute phase of sepsis...
November 21, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29222891/effects-of-preoperative-oral-carbohydrate-therapy-on-perioperative-glucose-metabolism-during-oral-maxillofacial-surgery-randomised-clinical-trial
#5
Kanako Esaki, Masanori Tsukamoto, Eiji Sakamoto, Takeshi Yokoyama
BACKGROUND AND OBJECTIVES: Preoperative oral carbohydrate therapy has been suggested to attenuate postoperative insulin resistance. The purpose of this study was to investigate the effect of a carbohydrate-rich beverage given preoperatively on intraoperative glucose metabolism. METHODS AND STUDY DESIGN: This study was a randomised, open-label, placebo-controlled trial. Patients undergoing oral-maxillofacial surgery were divided into two groups. In the glucose group, patients took glucose (50 g/278 mL, p...
2018: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29222823/dominant-role-of-microglial-and-macrophage-innate-immune-responses-in-human-ischemic-infarcts
#6
Tobias Zrzavy, Joana Machado-Santos, Sheren Christine, Christoph Baumgartner, Howard L Weiner, Oleg Butovsky, Hans Lassmann
Inflammatory mechanisms, involving granulocytes, T-cells, B-cells, macrophages and activated microglia, have been suggested to play a pathogenic role in experimental models of stroke and may be targets for therapeutic intervention. However, knowledge on the inflammatory response in human stroke lesions is limited. Here, we performed a quantitative study on the inflammatory reaction in human ischemic infarct lesions. We found increased numbers of T-lymphocytes, mainly CD8+ cells, but not of B-lymphocytes. Their number was very low in comparison to that seen in inflammatory diseases of the central nervous system and they did not show signs of activation...
December 8, 2017: Brain Pathology
https://www.readbyqxmd.com/read/29222764/optimization-of-multi-omic-genome-scale-models-methodologies-hands-on-tutorial-and-perspectives
#7
Supreeta Vijayakumar, Max Conway, Pietro Lió, Claudio Angione
Genome-scale metabolic models are valuable tools for assessing the metabolic potential of living organisms. Being downstream of gene expression, metabolism is increasingly being used as an indicator of the phenotypic outcome for drugs and therapies. We here present a review of the principal methods used for constraint-based modelling in systems biology, and explore how the integration of multi-omic data can be used to improve phenotypic predictions of genome-scale metabolic models. We believe that the large-scale comparison of the metabolic response of an organism to different environmental conditions will be an important challenge for genome-scale models...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222757/rna-sequencing-and-analysis-in-microorganisms-for-metabolic-network-reconstruction
#8
Eva Pinatel, Clelia Peano
There is a strict interplay between metabolic networks and transcriptional regulation in bacteria; indeed, the transcriptome regulation, affecting the expression of large gene sets, can be used to predict the likely "on" or "off" state of metabolic genes as a function of environmental factors. Up to date, many bacterial transcriptomes have been studied by RNAseq, hundreds of experiments have been performed, and Giga bases of sequences have been produced. All this transcriptional information could potentially be integrated into metabolic networks in order to obtain a more comprehensive view of their regulation and to increase their prediction power...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222606/hypothalamic-pituitary-adrenal-hpa-axis-functioning-in-overtraining-syndrome-findings-from-endocrine-and-metabolic-responses-on-overtraining-syndrome-eros-eros-hpa-axis
#9
Flavio A Cadegiani, Claudio E Kater
BACKGROUND: Overtraining syndrome (OTS) results from excessive training load without adequate recovery and leads to decreased performance and fatigue. The pathophysiology of OTS in athletes is not fully understood, which makes accurate diagnosis difficult. Previous studies indicate that alterations in the hypothalamus-pituitary-adrenal (HPA) axis may be responsible for OTS; however, the data is not conclusive. This study aimed to compare, through gold standard and exercise-independent tests, the response of the HPA axis in OTS-affected athletes (OTS group) to healthy physically active subjects (ATL group) and healthy non-active subjects (NCS group)...
December 8, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/29222603/adequacy-of-planctomycetes-as-supplementary-food-source-for-daphnia-magna
#10
M C Marinho, O M Lage, José Catita, S C Antunes
The nutritional quality of daphnids diet can influence their growth, reproduction and survival. In aquatic ecosystems, bacteria can contribute significantly to Daphnia diet by supporting, for instances, their high needs for phosphorus. The laboratory feeding of the model organisms Daphnia spp. is algal based, but should be improved to allow their better performance. The aim of this study was to evaluate the potential of two planctomycetes, Gemmata obscuriglobus and Rhodopirellula rubra, from exponential and stationary growth phases as alternative or supplementary food source for Daphnia magna...
December 8, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29222457/a-control-analysis-perspective-on-katz-centrality
#11
Kieran J Sharkey
Methods for efficiently controlling dynamics propagated on networks are usually based on identifying the most influential nodes. Knowledge of these nodes can be used for the targeted control of dynamics such as epidemics, or for modifying biochemical pathways relating to diseases. Similarly they are valuable for identifying points of failure to increase network resilience in, for example, social support networks and logistics networks. Many measures, often termed 'centrality', have been constructed to achieve these aims...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29222456/bmps-as-new-insulin-sensitizers-enhanced-glucose-uptake-in-mature-3t3-l1-adipocytes-via-ppar%C3%AE-and-glut4-upregulation
#12
Isabelle Schreiber, Gina Dörpholz, Claus-Eric Ott, Bjørt Kragesteen, Nancy Schanze, Cory Thomas Lee, Josef Köhrle, Stefan Mundlos, Karen Ruschke, Petra Knaus
Insulin-resistance is the main cause of type 2 diabetes. Here we describe the identification and characterization of BMP2 and BMP6 as new insulin-sensitizing growth factors in mature adipocytes. We show that BMP2 and BMP6 lead to enhanced insulin-mediated glucose uptake in both insulin-sensitive and -insensitive adipocytes. We exclude a direct effect of BMP2 or BMP6 on translocation of GLUT4 to the plasma membrane and demonstrate that these BMPs increase GLUT4 protein levels equipotent to Rosiglitazone. BMPs induce expression of PPARγ as the crucial mediator for the insulin-sensitizing effect...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29222412/ancestral-perinatal-obesogen-exposure-results-in-a-transgenerational-thrifty-phenotype-in-mice
#13
Raquel Chamorro-Garcia, Carlos Diaz-Castillo, Bassem M Shoucri, Heidi Käch, Ron Leavitt, Toshi Shioda, Bruce Blumberg
Ancestral environmental exposures to non-mutagenic agents can exert effects in unexposed descendants. This transgenerational inheritance has significant implications for understanding disease etiology. Here we show that exposure of F0 mice to the obesogen tributyltin (TBT) throughout pregnancy and lactation predisposes unexposed F4 male descendants to obesity when dietary fat is increased. Analyses of body fat, plasma hormone levels, and visceral white adipose tissue DNA methylome and transcriptome collectively indicate that the F4 obesity is consistent with a leptin resistant, thrifty phenotype...
December 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/29222408/brain-insulin-resistance-impairs-hippocampal-synaptic-plasticity-and-memory-by-increasing-glua1-palmitoylation-through-foxo3a
#14
Matteo Spinelli, Salvatore Fusco, Marco Mainardi, Federico Scala, Francesca Natale, Rosita Lapenta, Andrea Mattera, Marco Rinaudo, Domenica Donatella Li Puma, Cristian Ripoli, Alfonso Grassi, Marcello D'Ascenzo, Claudio Grassi
High-fat diet (HFD) and metabolic diseases cause detrimental effects on hippocampal synaptic plasticity, learning, and memory through molecular mechanisms still poorly understood. Here, we demonstrate that HFD increases palmitic acid deposition in the hippocampus and induces hippocampal insulin resistance leading to FoxO3a-mediated overexpression of the palmitoyltransferase zDHHC3. The excess of palmitic acid along with higher zDHHC3 levels causes hyper-palmitoylation of AMPA glutamate receptor subunit GluA1, hindering its activity-dependent trafficking to the plasma membrane...
December 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/29222404/lack-of-parkin-anticipates-the-phenotype-and-affects-mitochondrial-morphology-and-mtdna-levels-in-a-mouse-model-of-parkinson-s-disease
#15
Milena Pinto, Nadee Nissanka, Carlos T Moraes
PARK2 is the most common gene mutated in monogenic recessive familial cases of Parkinson's disease (PD). Pathogenic mutations cause a loss of function of the encoded protein Parkin. ParkinKO mice, however, poorly represent human PD symptoms as they only exhibit mild motor phenotypes, minor dopamine metabolism abnormalities, and no signs of dopaminergic neurodegeneration. Parkin has been shown to participate in mitochondrial turnover, by targeting damaged mitochondria, with low membrane potential, to mitophagy...
December 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29222348/insulin-degrading-enzyme-contributes-to-the-pathology-in-a-mixed-model-of-type-2-diabetes-and-alzheimer-s-disease
#16
Huajie Li, Jian Wu, Linfeng Zhu, Luolin Sha, Song Yang, Jiang Wei, Lei Ji, Xiaochun Tang, Keshi Mao, Liping Cao, Ning Wei, Wei Xie, Zhilong Yang
Insulin degrading enzyme (IDE) is believed to act as a junction point of type 2 diabetes (T2D) and Alzheimer's disease (AD), however, the underlying mechanism was not completely clear yet. Transgenic APPSwe/PS1 mice were used as the AD model and were treated with streptozocin/streptozotocin (STZ) to develop a mixed mice model presenting both AD and T2D. Morris Water Maze (MWM) and recognition task were performed to trace the cognitive function. The detection of fasting plasma glucose (FPG) and plasma insulin concentration, and Oral Glucose Tolerance Test (OGTT) were used to trace the metabolism evolution...
December 8, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29222346/adiposity-inflammation-and-breast-cancer-pathogenesis-in-asian-women
#17
Neil M Iyengar, I-Chun Chen, Xi K Zhou, Dilip D Giri, Domenick J Falcone, Lisle A Winston, Hanhan Wang, Samantha Williams, Yen-Shen Lu, Tsu-Hsin Hsueh, Ann-Lii Cheng, Clifford A Hudis, Ching-Hung Lin, Andrew J Dannenberg
Obesity is associated with white adipose tissue (WAT) inflammation in the breast, elevated levels of the estrogen biosynthetic enzyme, aromatase, and systemic changes that predispose to breast cancer development. We examined whether WAT inflammation and its associated systemic effects correlate with body fat levels in an Asian population where body mass index (BMI) is not an accurate assessment of obesity and cancer risk. We also investigated whether biologic differences could account for the greater proportion of premenopausal estrogen receptor (ER)-positive breast cancer in Asian versus western countries...
December 8, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/29222331/a-hypertension-associated-mitochondrial-dna-mutation-introduces-an-m1g37-modification-into-trnamet-altering-its-structure-and-function
#18
Mi Zhou, Ling Xue, Yaru Chen, Haiying Li, Qiufen He, Bibin Wang, Feilong Meng, Meng Wang, Min-Xin Guan
Defective nucleotide modifications of mitochondrial tRNAs have been associated with several human diseases, but their pathophysiology remains poorly understood. In this report, we investigated the pathogenic molecular mechanism underlying a hypertension-associated 4435A>G mutation in mitochondrial tRNAMet The m.4435A>G mutation affected a highly conserved adenosine at position 37, 3' adjacent to the tRNA's anticodon, which is important for the fidelity of codon recognition and stabilization. We hypothesized that the m...
December 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29222329/glutaminolysis-is-required-for-tgf-%C3%AE-1-induced-myofibroblast-differentiation-and-activation
#19
Karen Bernard, Naomi J Logsdon, Gloria A Benavides, Yan Sanders, Jianhua Zhang, Victor M Darley-Usmar, Victor J Thannickal
Myofibroblasts participate in physiological wound healing and pathological fibrosis.  Myofibroblast differentiation is characterized by the expression of alpha-smooth muscle actin (α-SMA) and extracellular matrix (ECM) proteins, and is dependent on metabolic reprogramming.  In this study, we explored the role of glutaminolysis and metabolites of the tricarboxylic acid cycle (TCA) in supporting myofibroblast differentiation.  Glutaminolysis converts glutamine (Gln) into alpha-ketoglutarate (α-KG), a critical intermediate in the TCA cycle...
December 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29222166/effect-of-il-7-therapy-on-phospho-ribosomal-protein-s6-and-traf1-expression-in-hiv-specific-cd8-t-cells-in-patients-receiving-antiretroviral-therapy
#20
Chao Wang, Maria I Edilova, Lisa E Wagar, Shariq Mujib, Meromit Singer, Nicole F Bernard, Thérèse Croughs, Michael M Lederman, Irini Sereti, Margaret A Fischl, Elisabeth Kremmer, Mario Ostrowski, Jean-Pierre Routy, Tania H Watts
IL-7 therapy has been evaluated in patients who do not regain normal CD4 T cell counts after virologically successful antiretroviral therapy. IL-7 increases total circulating CD4 and CD8 T cell counts; however, its effect on HIV-specific CD8 T cells has not been fully examined. TRAF1, a prosurvival signaling adaptor required for 4-1BB-mediated costimulation, is lost from chronically stimulated virus-specific CD8 T cells with progression of HIV infection in humans and during chronic lymphocytic choriomeningitis infection in mice...
December 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
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