keyword
MENU ▼
Read by QxMD icon Read
search

Relative energy deficiency

keyword
https://www.readbyqxmd.com/read/29457786/intracellular-lipid-metabolism-impairs-%C3%AE-cell-compensation-during-diet-induced-obesity
#1
Risheng Ye, Ruth Gordillo, Mengle Shao, Toshiharu Onodera, Zhe Chen, Shiuhwei Chen, Xiaoli Lin, Jeffrey A SoRelle, Xiaohong Li, Miao Tang, Mark P Keller, Regina Kuliawat, Alan D Attie, Rana K Gupta, William L Holland, Bruce Beutler, Joachim Herz, Philipp E Scherer
The compensatory proliferation of insulin-producing β cells is critical to maintaining glucose homeostasis at the early stage of type 2 diabetes. Failure of β cells to proliferate results in hyperglycemia and insulin dependence in patients. To understand the effect of the interplay between β cell compensation and lipid metabolism upon obesity and peripheral insulin resistance, we eliminated LDL receptor-related protein 1 (LRP1), a pleiotropic mediator of cholesterol, insulin, energy metabolism, and other cellular processes, in β cells...
February 19, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29453889/mitochondrial-dysfunction-and-axon-degeneration-in-progressive-multiple-sclerosis
#2
REVIEW
Graham Campbell, Don Mahad
The neuron is the target of inflammatory demyelinating processes in multiple sclerosis (MS). In progressive MS, however, there is a gathering body of evidence indicating that molecular changes converge on mitochondria within neuronal cell bodies. The most reproducible change relates to mitochondrial respiratory chain complex deficiency, which compromises the capacity of neurons to generate ATP. The resulting energy failure state is coupled with an increase in demand for energy by the demyelinated axon, being particularly relevant to the long tracts such as corticospinal tracts with long projection axons...
February 17, 2018: FEBS Letters
https://www.readbyqxmd.com/read/29440322/neurodegeneration-in-progressive-multiple-sclerosis
#3
Graham Campbell, Don Mahad
The neuron is the target of inflammatory demyelinating processes in multiple sclerosis (MS). In progressive MS, however, there is a gathering body of evidence indicating molecular changes within neuronal cell bodies. All of these molecular changes to intrinsic neurons converge on mitochondria, and the most reproduced change relates to mitochondrial respiratory chain complex deficiency. This compromise in the capacity to generate ATP in the neuronal cell body is coupled with an increased demand for energy by the demyelinated axon, which is particularly relevant to the long tracts such as corticospinal tracts with long projection axons...
February 12, 2018: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/29440124/sorcs1-and-sorcs3-control-energy-balance-and-orexigenic-peptide-production
#4
Aygul Subkhangulova, Anna R Malik, Guido Hermey, Oliver Popp, Gunnar Dittmar, Thomas Rathjen, Matthew N Poy, Alexander Stumpf, Prateep Sanker Beed, Dietmar Schmitz, Tilman Breiderhoff, Thomas E Willnow
SORCS1 and SORCS3 are two related sorting receptors expressed in neurons of the arcuate nucleus of the hypothalamus. Using mouse models with individual or dual receptor deficiencies, we document a previously unknown function of these receptors in central control of metabolism. Specifically, SORCS1 and SORCS3 act as intracellular trafficking receptors for tropomyosin-related kinase B to attenuate signaling by brain-derived neurotrophic factor, a potent regulator of energy homeostasis. Loss of the joint action of SORCS1 and SORCS3 in mutant mice results in excessive production of the orexigenic neuropeptide agouti-related peptide and in a state of chronic energy excess characterized by enhanced food intake, decreased locomotor activity, diminished usage of lipids as metabolic fuel, and increased adiposity, albeit at overall reduced body weight...
February 12, 2018: EMBO Reports
https://www.readbyqxmd.com/read/29409987/decreased-atp-production-and-myocardial-contractile-reserve-in-metabolic-heart-disease
#5
Ivan Luptak, Aaron L Sverdlov, Marcello Panagia, Fuzhong Qin, David R Pimentel, Dominique Croteau, Deborah A Siwik, Joanne S Ingwall, Markus M Bachschmid, James A Balschi, Wilson S Colucci
Metabolic syndrome is a cluster of obesity-related metabolic abnormalities that lead to metabolic heart disease (MHD) with left ventricular pump dysfunction. Although MHD is thought to be associated with myocardial energetic deficiency, two key questions have not been answered. First, it is not known whether there is a sufficient energy deficit to contribute to pump dysfunction. Second, the basis for the energy deficit is not clear. To address these questions, mice were fed a high fat, high sucrose (HFHS) 'Western' diet to recapitulate the MHD phenotype...
January 31, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29409011/cardiomyocyte-specific-deletion-of-sirt1-gene-sensitizes-myocardium-to-ischemia-and-reperfusion-injury
#6
Lin Wang, Nanhu Quan, Wanqing Sun, Xu Chen, Courtney Cates, Thomas Rousselle, Xinchun Zhou, Xuezhong Zhao, Ji Li
Aim: A longevity gene, Sirtuin 1 (SIRT1) and energy sensor AMP-activated protein kinase (AMPK) have common activators such as caloric restriction, oxidative stress and exercise. The objective of this study is to characterize the role of cardiomyocyte SIRT1 in age-related impaired ischemic AMPK activation and increased susceptibility to ischemic insults. Methods and Results: Mice were subjected to ligation of left anterior descending coronary artery for in vivo ischemic models...
February 2, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29405793/within-day-energy-deficiency-and-metabolic-perturbation-in-male-endurance-athletes
#7
Monica K Torstveit, Ida Fahrenholtz, Thomas B Stenqvist, Øystein Sylta, Anna Melin
Endurance athletes are at increased risk of relative energy deficiency associated with metabolic perturbation and impaired health. We aimed to estimate and compare within-day energy balance (WDEB) in male athletes with suppressed and normal resting metabolic rate (RMR) and explore if within-day energy deficiency (WDED) is associated with endocrine markers of energy deficiency. Thirty-one male cyclists, triathletes, and long-distance runners recruited from regional competitive sports clubs were included. The protocol comprised measurements of RMR by ventilated hood, and energy intake and energy expenditure to predict RMRratio (measured RMR/predicted RMR), energy availability (EA), 24-hour energy balance (EB) and WDEB in 1-hour intervals, assessment of body-composition by dual-energy X-ray absorptiometry, and blood plasma analysis...
February 6, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29404440/engineered-fgf19-eliminates-bile-acid-toxicity-and-lipotoxicity-leading-to-resolution-of-steatohepatitis-and-fibrosis-in-mice
#8
Mei Zhou, R Marc Learned, Stephen J Rossi, Alex M DePaoli, Hui Tian, Lei Ling
Nonalcoholic fatty liver disease (NAFLD) is an increasingly prevalent chronic liver disease for which no approved therapies are available. Despite intensive research, the cellular mechanisms that mediate NAFLD pathogenesis and progression are poorly understood. Although obesity, diabetes, insulin resistance, and related metabolic syndrome, all consequences of a Western diet lifestyle, are well-recognized risk factors for NAFLD development, dysregulated bile acid metabolism is emerging as a novel mechanism contributing to NAFLD pathogenesis...
December 2017: Hepatology Communications
https://www.readbyqxmd.com/read/29398618/a-role-for-long-chain-acyl-coa-synthetase-4-acsl4-in-diet-induced-phospholipid-remodeling-and-obesity-associated-adipocyte-dysfunction
#9
Elizabeth A Killion, Andrew R Reeves, Mahmoud A El Azzouny, Qing-Wu Yan, Defne Surujon, John D Griffin, Thomas A Bowman, Chunyan Wang, Nirupa R Matthan, Eric L Klett, Dong Kong, John W Newman, Xianlin Han, Mi-Jeong Lee, Rosalind A Coleman, Andrew S Greenberg
OBJECTIVE: Regulation of fatty acid (FA) metabolism is central to adipocyte dysfunction during diet-induced obesity (DIO). Long-chain acyl-CoA synthetase-4 (ACSL4) has been hypothesized to modulate the metabolic fates of polyunsaturated FA (PUFA), including arachidonic acid (AA), but the in vivo actions of ACSL4 are unknown. The purpose of our studies was to determine the in vivo role of adipocyte ACSL4 in regulating obesity-associated adipocyte dysfunction. METHODS: We developed a novel mouse model with adipocyte-specific ablation of ACSL4 (Ad-KO) using loxP Cre recombinase technology...
January 31, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29394501/functional-interplay-between-lxr-and-ampk%C3%AE-inhibits-atherosclerosis-in-apoe-deficient-mice-a-new-anti-atherogenic-strategy
#10
Chuanrui Ma, Wenwen Zhang, Xiaoxiao Yang, Ying Liu, Lipei Liu, Ke Feng, Xiaomeng Zhang, Shu Yang, Lei Sun, Miao Yu, Jie Yang, Xiaoju Li, Wenquan Hu, Robert Q Miao, Yan Zhu, Luyuan Li, Jihong Han, Yuanli Chen, Yajun Duan
BACKGROUND AND PURPOSE: LXR agonist (T317) reduces atherosclerosis while inducing fatty liver. Metformin activates energy metabolism by activating AMPKα. In this study, we determined if the interaction between metformin and T317 can inhibit atherosclerosis without activation of hepatic lipogenesis. EXPERIMENTAL APPROACH: ApoE deficient mice were treated with T317, metformin or both contained in a high-fat diet for 16 weeks. After treatment, mouse aorta, liver, macrophage and serum samples were collected to determine atherosclerotic lesions, fatty liver, lipid profiles and expression of related molecules...
February 2, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29379565/bone-mineral-density-and-bone-metabolism-in-patients-with-duchenne-muscular-dystrophy
#11
Mohammad Barzegar, Elnaz Niknam, Parinaz Habibi, Shadi Shiva, Sanaz Tahmasebi
Objective: Poor bone health with related morbidity is a major problem with Duchene Muscular Dystrophy (DMD). Decreased mobility and long-term corticosteroid therapy are involved in poor bone health in DMD. We investigated bone mineral density and bone metabolism in 30 steroid treated DMD patients and also compared mentioned factors between ambulated and non-ambulated patients. Materials & Methods: In this cross-sectional study, 30 boys (21 patients ambulate and 9 non-ambulate) with documented DMD, according to genetic analysis, were enrolled in 2015...
2018: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/29374326/investigating-the-bone-mineral-density-in-children-with-solid-tumors-in-southern-iran-a-case-control-study
#12
Forough Saki, Sezaneh Haghpanah, Tahereh Zarei, Mohammad Hossein Dabbaghmanesh, Gholamhossein Ranjbar Omrani, Mohammadreza Bordbar
Along with increasing childhood cancer survival, there is increasing concern about its chronic complications. We showed that 20.5 and 45.9% of children with solid tumors in southern Iran had low bone mass for chronological age in lumbar and femoral area, which was associated with serum ferritin and hemoglobin. 52.4% of these children had vitamin D deficiency, as well. PURPOSE/INTRODUCTION: Along with increasing the childhood cancer survival, there is increasing concern about the chronic complications of the disease and the related therapies...
January 26, 2018: Archives of Osteoporosis
https://www.readbyqxmd.com/read/29364933/long-term-dietary-replacement-of-fishmeal-and-fish-oil-in-diets-for-rainbow-trout-oncorhynchus-mykiss-effects-on-growth-whole-body-fatty-acids-and-intestinal-and-hepatic-gene-expression
#13
Viviana Lazzarotto, Françoise Médale, Laurence Larroquet, Geneviève Corraze
The effects of replacing fishmeal and fish oil with a plant-based diet were studied in juvenile (10g) and ongrowing (250-350g) rainbow trout from first-feeding. Feed-related differences in the intestinal and hepatic transcriptome were examined in juveniles after 7 months of feeding at 7°C. Based on microarray results obtained for juveniles, the expression of selected genes related to lipid, cholesterol and energy metabolisms, was assessed by RT-qPCR in ongrowing trout after 6 additional months of feeding at 17°C...
2018: PloS One
https://www.readbyqxmd.com/read/29363772/lessons-from-animal-nutritionists-dietary-amino-acid-requirement-studies-and-considerations-for-healthy-aging-studies
#14
REVIEW
Anna K Shoveller, Leslie M McKnight, Katharine M Wood, John P Cant
Dietary restriction (DR) increases median life span and protects against age-related disease. Improved longevity can be achieved by restriction of dietary energy, protein, or amino acids (AAs), such as methionine (Met). Met requirements have been defined using methodologies that measure the dose response to Met when all other dietary variables are held constant and with outcomes focused on protein turnover. Here, we cover protein and sulfur AA requirements and discuss the terms "deficient," "optimal," and "excess" and how these need to be considered...
January 24, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29351755/bone-mineral-density-at-the-hip-and-its-relation-to-fat-mass-and-lean-mass-in-adolescents-the-troms%C3%A3-study-fit-futures
#15
Anne Winther, Lone Jørgensen, Luai Awad Ahmed, Tore Christoffersen, Anne-Sofie Furberg, Guri Grimnes, Rolf Jorde, Ole Andreas Nilsen, Elaine Dennison, Nina Emaus
BACKGROUND: Positive association between body weight and bone mass is well established, and the concept of body mass index (BMI) is associated with higher areal bone mineral density (aBMD) and reduced fracture risk. BMI, that comprises both fat mass (FM) and lean mass (LM) may contribute to peak bone mass achievement in different ways. This study explored the influence of body composition in terms of total body LM and FM on hip aBMD-values in adolescence. METHODS: In 2010/2011, 93% of the region's first-year upper-secondary school students (15-17 years old) in Tromsø, Norway attended the Tromsø Study, Fit Futures...
January 19, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29343498/the-gpr120-agonist-tug-891-promotes-metabolic-health-by-stimulating-mitochondrial-respiration-in-brown-fat
#16
Maaike Schilperoort, Andrea D van Dam, Geerte Hoeke, Irina G Shabalina, Anthony Okolo, Aylin C Hanyaloglu, Lea H Dib, Isabel M Mol, Natarin Caengprasath, Yi-Wah Chan, Sami Damak, Anne Reifel Miller, Tamer Coskun, Bharat Shimpukade, Trond Ulven, Sander Kooijman, Patrick Cn Rensen, Mark Christian
Brown adipose tissue (BAT) activation stimulates energy expenditure in human adults, which makes it an attractive target to combat obesity and related disorders. Recent studies demonstrated a role for G protein-coupled receptor 120 (GPR120) in BAT thermogenesis. Here, we investigated the therapeutic potential of GPR120 agonism and addressed GPR120-mediated signaling in BAT We found that activation of GPR120 by the selective agonist TUG-891 acutely increases fat oxidation and reduces body weight and fat mass in C57Bl/6J mice...
January 17, 2018: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/29331171/the-genotypic-and-phenotypic-spectrum-of-mto1-deficiency
#17
James J O'Byrne, Maja Tarailo-Graovac, Aisha Ghani, Michael Champion, Charu Deshpande, Ali Dursun, Riza K Ozgul, Peter Freisinger, Ian Garber, Tobias B Haack, Rita Horvath, Ivo Barić, Ralf A Husain, Leo A J Kluijtmans, Urania Kotzaeridou, Andrew A Morris, Colin J Ross, Saikat Santra, Jan Smeitink, Mark Tarnopolsky, Saskia B Wortmann, Johannes A Mayr, Michaela Brunner-Krainz, Holger Prokisch, Wyeth W Wasserman, Ron A Wevers, Udo F Engelke, Richard J Rodenburg, Teck Wah Ting, Robert McFarland, Robert W Taylor, Ramona Salvarinova, Clara D M van Karnebeek
BACKGROUND: Mitochondrial diseases, a group of multi-systemic disorders often characterized by tissue-specific phenotypes, are usually progressive and fatal disorders resulting from defects in oxidative phosphorylation. MTO1 (Mitochondrial tRNA Translation Optimization 1), an evolutionarily conserved protein expressed in high-energy demand tissues has been linked to human early-onset combined oxidative phosphorylation deficiency associated with hypertrophic cardiomyopathy, often referred to as combined oxidative phosphorylation deficiency-10 (COXPD10)...
January 2018: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29329999/understanding-melanocortin-4-receptor-control-of-neuronal-circuits-toward-novel-therapeutics-for-obesity-syndrome
#18
REVIEW
Sang Hyeon Ju, Gyu-Bon Cho, Jong-Woo Sohn
It is well known that melanocortin-4 receptors (MC4Rs) and central melanocortin pathways regulate food intake, energy expenditure, and glucose homeostasis. Importantly, MC4R deficiency is the most common monogenic cause of human obesity. Interestingly, MC4Rs expressed by distinct central nuclei are responsible for the different physiological function of MC4R stimulation. In addition, MC4Rs activate multiple intracellular and/or synaptic signaling molecules for the regulation of neuronal circuits. Therefore, MC4Rs and the downstream signal molecules are plausible targets for development of novel therapeutics against obesity and obesity-related metabolic disorders...
January 9, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29328058/behaviour-of-niobium-during-early-earth-s-differentiation-insights-from-its-local-structure-and-oxidation-state-in-silicate-melts-at-high-pressure
#19
Chrystele Sanloup, Benjamin Cochain, Charlotte de Grouchy, Konstantin Glazyrin, Zuzana Konopkova, Hanns-Peter Liermann, Innokenty Kantor, Raffaella Torchio, O Mathon, Tetsuo Irifune
Niobium (Nb) is one of the key trace elements used to understand Earth's formation and differentiation, and is remarkable for its deficiency relative to tantalum in terrestrial rocks compared to the building chondritic blocks. In this context, the local environment of Nb in silica-rich melts and glasses is studied by in situ X-ray absorption spectroscopy (XAS) at high pressure (P) up to 9.3 GPa and 1350 K using resistive-heating diamond-anvil cells. Nb is slightly less oxidized in the melt (intermediate valence between +4 and +5) than in the glass (+5), an effect evidenced from the shift of the Nb-edge towards lower energies...
January 12, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29322127/chemical-tracer-diffusion-of-sr-and-co-in-polycrystalline-ca-deficient-camno3-%C3%AE-with-camn2o4-precipitates
#20
Temesgen D Desissa, Nikola Kanas, Sathya P Singh, Kjell Wiik, Mari-Ann Einarsrud, Truls Norby
Diffusivity on the A- and B-site of polycrystalline perovskite CaMnO3-δ with Ca deficiency and spinel CaMn2O4 (marokite) as a secondary phase was studied using chemical tracers and secondary ion mass spectrometry (SIMS) complemented by electron probe microanalysis (EPMA). Thin films containing Sr and Co chemical tracers were deposited on the polished surface of the polycrystalline composite sample followed by annealing at 800-1200 °C for 96 h. Diffusion profiles for each tracer were determined with SIMS, followed by calculation of diffusion coefficients by fitting to appropriate models...
January 11, 2018: Physical Chemistry Chemical Physics: PCCP
keyword
keyword
67834
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"