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Metabolic conditioning

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https://www.readbyqxmd.com/read/28938482/microrna-221-3p-regulates-angiopoietin-like-8-angptl8-expression-in-adipocytes
#1
Raghavendra Mysore, Francisco J Ortega, Jèssica Latorre, Maria Ahonen, Hanna Savolainen-Peltonen, Pamela Fischer-Posovszky, Martin Wabitsch, Vesa M Olkkonen, José M Fernández-Real, P A Nidhina Haridas
Context: Angiopoietin-like 8 (ANGPTL8) has been identified as a key regulator of lipid metabolism. Design: We addressed the correlation between ANGPTL8 mRNA with hallmark insulin-regulated and lipogenic genes in human adipose tissue. The regulation of ANGPTL8 expression in adipocytes was studied after inflammatory challenge, and the role of microRNA-221-3p therein was investigated. Results: ANGPTL8 gene expression in subcutaneous (SAT) and visceral (VAT) adipose tissue was highly correlated with SLC2A4/GLUT4 and ADIPOQ/Adiponectin...
August 30, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938471/low-vitamin-b12-in-pregnancy-is-associated-with-adipose-derived-circulating-mirs-targeting-ppar%C3%AE-and-insulin-resistance
#2
Antonysunil Adaikalakoteswari, Manu Vatish, Mohammad Tauqeer Alam, Sascha Ott, Sudhesh Kumar, Ponnusamy Saravanan
Context: Low vitamin B12 (B12) during pregnancy is associated with higher maternal obesity, insulin resistance(IR) and gestational diabetes(GDM). B12 is a key co-factor in 1-carbon metabolism. Objective: We hypothesize that B12 plays a role in epigenetic regulation by altering circulating miRNAs(miRs) during adipocyte differentiation and results in an adverse metabolic phenotype. Design, settings and main-outcome measure: Human pre-adipocyte cell-line(Chub-S7) were differentiated in various B12 concentrations: Control(500nM), LowB12(0...
September 5, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938469/taming-the-flames-targeting-white-adipose-tissue-browning-in-hypermetabolic-conditions
#3
Abdikarim Abdullahi, Marc G Jeschke
In this era of increased obesity and diabetes prevalence, the browning of white adipose tissue (WAT) has emerged as a promising therapeutic target to induce weight loss and improve insulin sensitivity in this population. The browning process entails a shift in the WAT from primarily storing excess energy to the dissipation of energy as heat. However, this idealistic view of WAT browning being the saviour of the metabolic syndrome has been criticized by studies in burns and cancer patients that have shown browning to be detrimental rather than being beneficial...
August 30, 2017: Endocrine Reviews
https://www.readbyqxmd.com/read/28938461/adipokines-and-their-receptor-are-widely-expressed-and-distinctly-regulated-by-the-metabolic-environment-in-the-prostate-of-male-mice-direct-role-under-normal-and-tumoral-conditions
#4
André Sarmento-Cabral, Fernando L-López, Raúl M Luque
Adipose tissue-derived adipokines (i.e. leptin/adiponectin/resistin) play important roles in the regulation of several pathophysiological processes through the activation of specific receptors. However, although adipokines and their receptors are widely distributed in many tissues and exhibit a clear modulation by the particular metabolic conditions (e.g. obesity and/or fasting), their expression, regulation, and putative action on normal prostate-glands (PGs; a hormone-dependent organ tightly regulated by the endocrine-metabolic milieu) is still to be defined...
August 9, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938451/antibody-mediated-targeting-of-the-fgfr1c-isoform-increases-glucose-uptake-in-white-and-brown-adipose-tissue-in-male-mice
#5
Jo E Lewis, Ricardo J Samms, Scott Cooper, Jeni C Luckett, Alan C Perkins, James D Dunbar, Dennis P Smith, Paul J Emmerson, Andrew C Adams, Francis J P Ebling, Kostas Tsintzas
The increased prevalence of obesity and its cardiometabolic implications demonstrates the imperative to identify novel therapeutic targets able to effect meaningful metabolic changes in this population. Antibody-mediated targeting of fibroblast growth factor receptor 1c isoform (FGFR1c) has been shown to ameliorate hyperglycaemia and protect from diet- and genetically-induced obesity in rodents and non-human primates. However, it is currently unknown which tissue(s) contribute to this glucose lowering effect...
August 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938434/fgf21-is-an-insulin-dependent-postprandial-hormone-in-adult-humans
#6
Ricardo J Samms, Jo E Lewis, Luke Norton, Francis B Stephens, Christopher J Gaffney, Tony Butterfield, Dennis Smith, Christine Cheng, James W Perfield, Andrew C Adams, Francis J P Ebling, Kostas Tsintzas
Context: Fibroblast growth factor 21 (FGF21) secretion has been shown to respond directly to carbohydrate consumption, with glucose, fructose and sucrose all reported to increase plasma levels of FGF21 in rodents and humans. However, carbohydrate consumption also results in secretion of insulin. Objective: The aim of this study was to examine the combined and independent effects of hyperglycemia and hyperinsulinemia on total and bioactive FGF21 in the postprandial period in humans, and determine whether this effect is attenuated in conditions of altered insulin secretion and action...
August 4, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938424/adiponectin-predicts-hdl-cholesterol-efflux-capacity-in-adults-irrespective-of-body-mass-index-and-fat-distribution
#7
Gunther Marsche, Sieglinde Zelzer, Andreas Meinitzer, Sabine Kern, Sabine Meissl, Gudrun Pregartner, Daniel Weghuber, Gunter Almer, Harald Mangge
Context: Obesity is associated with hypoadiponectemia, dyslipidemia and increased risk of coronary vascular disease (CVD). Mechanisms linking these conditions remain to be fully understood. Cholesterol efflux capacity (CEC) is a crucial functional property of high-density lipoprotein (HDL) that strongly predicts CVD incidence. Objective: To investigate whether age, fat distribution, and other obesity related factors affect CEC in juvenile and adult overweight/obese participants of the STYJOBS/EDECTA cohort (NCT00482924)...
August 29, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938018/genome-wide-identification-of-bacterial-plant-colonization-genes
#8
Benjamin J Cole, Meghan E Feltcher, Robert J Waters, Kelly M Wetmore, Tatiana S Mucyn, Elizabeth M Ryan, Gaoyan Wang, Sabah Ul-Hasan, Meredith McDonald, Yasuo Yoshikuni, Rex R Malmstrom, Adam M Deutschbauer, Jeffery L Dangl, Axel Visel
Diverse soil-resident bacteria can contribute to plant growth and health, but the molecular mechanisms enabling them to effectively colonize their plant hosts remain poorly understood. We used randomly barcoded transposon mutagenesis sequencing (RB-TnSeq) in Pseudomonas simiae, a model root-colonizing bacterium, to establish a genome-wide map of bacterial genes required for colonization of the Arabidopsis thaliana root system. We identified 115 genes (2% of all P. simiae genes) with functions that are required for maximal competitive colonization of the root system...
September 22, 2017: PLoS Biology
https://www.readbyqxmd.com/read/28937988/differential-effects-of-rice-bran-cultivars-to-limit-salmonella-typhimurium-in-chicken-cecal-in-vitro-incubations-and-impact-on-the-cecal-microbiome-and-metabolome
#9
Peter M Rubinelli, Sun Ae Kim, Si Hong Park, Stephanie M Roto, Nora Jean Nealon, Elizabeth P Ryan, Steven C Ricke
In this study, rice brans from different cultivars (Calrose, Jasmine, and Red Wells) were assessed for their ability to inhibit Salmonella enterica serovar Typhimurium using an in vitro mixed anaerobic culture system containing cecal microbiota obtained from broilers of different ages. Salmonella Typhimurium was added to controls (feed only, cecal only, and feed + cecal material) and treatments (feed + cecal + different rice brans) and S. Typhimurium populations were enumerated at 0, 24, and 48 h. Two experimental conditions were applied 1) unadapted condition in which S...
2017: PloS One
https://www.readbyqxmd.com/read/28937878/degradation-of-chlorpyrifos-by-an-endophytic-bacterium-of-the-sphingomonas-genus-strain-hjy-isolated-from-chinese-chives-allium-tuberosum
#10
Fayun Feng, Yisong Li, Jing Ge, Jinjin Chen, Wayne Jiang, Shuang He, Xianjing Liu, Xiangyang Yu
The degradation of chlorpyrifos (CP) by an endophytic bacterial strain (HJY) isolated from Chinese chives (Allium tuberosum Rottl. ex Spreng) was investigated. Strain HJY was identified as Sphingomonas sp. based on morphological, physiological, and biochemical tests and a 16S rDNA sequence analysis. Approximately 96% of 20 mg L(-1) CP was degraded by strain HJY over 15 days in liquid minimal salts medium (MSM). The CP degradation rate could also be increased by glucose supplementation. The optimal conditions for the removal of 20 mg L(-1) CP by strain HJY in MSM were 2% inoculum density, pH 6...
September 22, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28936802/significance-of-mitochondrial-protein-post-translational-modifications-in-pathophysiology-of-brain-injury
#11
Nina Klimova, Aaron Long, Tibor Kristian
Mitochondria are complex organelles that undergo constant fusion and fission in order to adapt to the ever-changing cellular environment. The fusion/fission proteins, localized in the inner and outer mitochondrial membrane, play critical roles under pathological conditions such as acute brain injury and neurodegenerative diseases. Post-translational modifications of these proteins tightly regulate their function and activity, ultimately impacting mitochondrial dynamics and their efficiency to generate ATP. The individual post-translational modifications that are known to affect mitochondrial dynamics include SUMOylation, ubiquitination, phosphorylation, S-nitrosylation, acetylation, O-linked N-acetyl-glucosamine glycosylation, ADP-ribosylation, and proteolytic cleavage...
September 21, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28936736/pathological-effects-of-exosomes-in-mediating-diabetic-cardiomyopathy
#12
Esam S B Salem, Guo-Chang Fan
Diabetic subjects are at risk of developing cardiovascular disease, which accounts for 60-80% of diabetes-related mortality. Atherosclerosis is still considered as a leading cause of heart failure in diabetic patients, but it could also be an intrinsic and long-term effect of contractile cardiac cells malfunction, known as diabetic cardiomyopathy (DCM). Pathologically, this cardiac dysfunction is manifested by inflammation, apoptosis, fibrosis, hypertrophy and altered cardiomyocytes metabolism. However, the underlying molecular mechanisms of DCM pathophysiology are not clearly understood...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936709/taurine-counteracts-the-neurotoxic-effects-of-streptozotocin-induced-diabetes-in-rats
#13
Greice Caletti, Ana P Herrmann, Rianne Remus Pulcinelli, Luiza Steffens, Ana Moira Morás, Priscila Vianna, José Artur Bogo Chies, Dinara Jaqueline Moura, Helena Maria Tanhauser Barros, Rosane Gomez
Diabetes is a chronic metabolic disease associated with oxidative stress, damage to biomolecules such as DNA, and neuroinflammation. Taurine, a sulfur-containing amino acid widespread in the brain, has neuroprotective properties that might prevent tissue injury and DNA damage induced by chronic hyperglycemia. We evaluated the effects of chronic taurine treatment on oxidative stress parameters, DNA damage and inflammatory markers in the frontal cortex, and hippocampus of streptozotocin-induced diabetic rats...
September 21, 2017: Amino Acids
https://www.readbyqxmd.com/read/28936467/peroxisome-motility-measurement-and-quantification-assay
#14
Jeremy Metz, Inês G Castro, Michael Schrader
Organelle movement, distribution and interaction contribute to the organisation of the eukaryotic cell. Peroxisomes are multifunctional organelles which contribute to cellular lipid metabolism and ROS homeostasis. They distribute uniformly in mammalian cells and move along microtubules via kinesin and dynein motors. Their metabolic cooperation with mitochondria and the endoplasmic reticulum (ER) is essential for the β-oxidation of fatty acids and the synthesis of myelin lipids and polyunsaturated fatty acids...
September 5, 2017: Bio-protocol
https://www.readbyqxmd.com/read/28936234/the-effects-of-co2-and-h2-on-co-metabolism-by-pure-and-mixed-microbial-cultures
#15
Sofia Esquivel-Elizondo, Anca G Delgado, Bruce E Rittmann, Rosa Krajmalnik-Brown
BACKGROUND: Syngas fermentation, the bioconversion of CO, CO2, and H2 to biofuels and chemicals, has undergone considerable optimization for industrial applications. Even more, full-scale plants for ethanol production from syngas fermentation by pure cultures are being built worldwide. The composition of syngas depends on the feedstock gasified and the gasification conditions. However, it remains unclear how different syngas mixtures affect the metabolism of carboxidotrophs, including the ethanol/acetate ratios...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28936221/metabolite-profiling-of-barley-grains-subjected-to-water-stress-to-explain-the-genotypic-difference-in-drought-induced-impacts-on-malting-quality
#16
Xiaojian Wu, Kangfeng Cai, Guoping Zhang, Fanrong Zeng
Grain weight and protein content will be reduced and increased, respectively, when barley is subjected to water stress after anthesis, consequently deteriorating the malt quality. However, such adverse impact of water stress differs greatly among barley genotypes. In this study, two Tibetan wild barley accessions and two cultivated varieties differing in water stress tolerance were used to investigate the genotypic difference in metabolic profiles during grain-filling stage under drought condition. Totally, 71 differently accumulated metabolites were identified, including organic acids, amino acids/amines, and sugars/sugar alcohols...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28936195/diagnostic-yield-and-accuracy-of-different-metabolic-syndrome-criteria-in-adult-patients-with-epilepsy
#17
Lucas Scotta Cabral, Pedro Abrahim Cherubini, Marina Amaral de Oliveira, Larissa Bianchini, Carolina Machado Torres, Marino Muxfeldt Bianchin
INTRODUCTION: Metabolic syndrome (MetS) is an emergent problem among patients with epilepsy. Here, we evaluate and compare the diagnostic yield and accuracy of different MetS criteria among adult patients with epilepsy to further explore the best strategy for diagnosis of MetS among patients with epilepsy. MATERIALS AND METHODS: Ninety-five epileptic adults from a tertiary epilepsy reference center were prospectively recruited over 22 weeks in a cross-sectional study...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28936160/the-energy-metabolism-dysfunction-in-psychiatric-disorders-postmortem-brains-focus-on-proteomic-evidence
#18
REVIEW
Giuliana S Zuccoli, Verônica M Saia-Cereda, Juliana M Nascimento, Daniel Martins-de-Souza
Psychiatric disorders represent a great medical and social challenge and people suffering from these conditions face many impairments regarding personal and professional life. In addition, a mental disorder will manifest itself in approximately one quarter of the world's population at some period of their life. Dysfunction in energy metabolism is one of the most consistent scientific findings associated with these disorders. With this is mind, this review compiled data on disturbances in energy metabolism found by proteomic analyses of postmortem brains collected from patients affected by the most prevalent psychiatric disorders: schizophrenia (SCZ), bipolar disorder (BPD), and major depressive disorder (MDD)...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28935941/modelling-compartmentalization-towards-elucidation-and-engineering-of-spatial-organization-in-biochemical-pathways
#19
Govind Menon, Chinedu Okeke, J Krishnan
Compartmentalization is a fundamental ingredient, central to the functioning of biological systems at multiple levels. At the cellular level, compartmentalization is a key aspect of the functioning of biochemical pathways and an important element used in evolution. It is also being exploited in multiple contexts in synthetic biology. Accurate understanding of the role of compartments and designing compartmentalized systems needs reliable modelling/systems frameworks. We examine a series of building blocks of signalling and metabolic pathways with compartmental organization...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935880/the-role-of-glutamate-transporters-in-the-pathophysiology-of-neuropsychiatric-disorders
#20
REVIEW
Sinead M O'Donovan, Courtney R Sullivan, Robert E McCullumsmith
Altered glutamate transporter expression is a common feature of many neuropsychiatric conditions, including schizophrenia. Excitatory amino acid transporters (EAATs) are responsible for the reuptake of glutamate, preventing non-physiological spillover from the synapse. Postmortem studies have revealed significant dysregulation of EAAT expression in various brain regions at the cellular and subcellular level. Recent animal studies have also demonstrated a role for glutamate spillover as a mechanism of disease...
September 21, 2017: NPJ Schizophrenia
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