keyword
MENU ▼
Read by QxMD icon Read
search

Energy metabolism

keyword
https://www.readbyqxmd.com/read/29161457/the-soluble-guanylate-cyclase-cyg12-is-required-for-the-acclimation-to-hypoxia-and-trophic-regimes-in-chlamydomonas-reinhardtii
#1
Melis Düner, Jan Lambertz, Carolin Mügge, Anja Hemschemeier
Oxygenic phototrophs frequently encounter environmental conditions that result in intracellular energy crises. Growth of the unicellular green alga Chlamydomonas reinhardtii in hypoxia in the light depends on acclimatory responses of which the induction of photosynthetic cyclic electron flow is essential. The microalga cannot grow in the absence of molecular oxygen (O2 ) in the dark, although it possesses an elaborate fermentation metabolism. Not much is known about how the microalga senses and signals the lack of O2 or about its survival strategies during energy crises...
November 21, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29161327/thallium-stimulates-ethanol-production-in-immortalized-hippocampal-neurons
#2
Laura Colombaioni, Massimo Onor, Edoardo Benedetti, Emilia Bramanti
Lactate and ethanol (EtOH) were determined in cell culture medium (CCM) of immortalized hippocampal neurons (HN9.10e cell line) before and after incubation with Thallium (Tl). This cell line is a reliable, in vitro model of one of the most vulnerable regions of central nervous system. Cells were incubated for 48 h with three different single Tl doses: 1, 10, 100 μg/L (corresponding to 4.9, 49 and 490 nM, respectively). After 48 h, neurons were "reperfused" with fresh CCM every 24/48 h until 7 days after the treatment and the removed CCM was collected and analysed...
2017: PloS One
https://www.readbyqxmd.com/read/29161091/dealing-with-stress-defective-metabolic-adaptation-in-chronic-obstructive-pulmonary-disease-pathogenesis
#3
Charalambos Michaeloudes, Pankaj K Bhavsar, Sharon Mumby, Kian Fan Chung, Ian M Adcock
The mitochondrion is the main site of energy production and a hub of key signaling pathways. It is also central in stress-adaptive response due to its dynamic morphology and ability to interact with other organelles. In response to stress, mitochondria fuse into networks to increase bioenergetic efficiency and protect against oxidative damage. Mitochondrial damage triggers segregation of damaged mitochondria from the mitochondrial network through fission and their proteolytic degradation by mitophagy. Post-translational modifications of the mitochondrial proteome and nuclear cross-talk lead to reprogramming of metabolic gene expression to maintain energy production and redox balance...
November 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29160443/body-fat-redistribution-and-changes-in-lipid-and-glucose-metabolism-in-people-living-with-hiv-aids
#4
Rebeca Antunes Beraldo, André Pereira Dos Santos, Mariana Palma Guimarães, Helena Siqueira Vassimon, Francisco José Albuquerque de Paula, Dalmo Roberto Lopes Machado, Maria Cristina Foss-Freitas, Anderson Marliere Navarro
INTRODUCTION: The HIV lipodystrophy syndrome is characterized by changes in metabolism, and body composition that increase cardiovascular risk of people living with HIV/AIDS (PLWHA) using highly active antiretroviral therapy (HAART). OBJECTIVE: To assess the prevalence of lipodystrophy and changes in lipid and glucose metabolism in PLWHA in use of HAART. METHODS: For the anthropometric evaluation we measured weight, height and abdominal circumference (AC)...
July 2017: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/29160051/irisin-as-a-regulator-of-bone-and-glucose-metabolism-a-narrative-review
#5
Silvia I Briganti, Gianluigi Gaspa, Gaia Tabacco, Anda M Naciu, Roberto Cesareo, Silvia Manfrini, Andrea Palermo
In humans, irisin is produced mainly by skeletal muscle in response to physical activity. It has been demonstrated that irisin plays a pivotal role in inducing fat browning and regulating energy expenditure. New findings from various studies conducted in both animals and humans suggest that irisin can affect bone and glucose metabolism. In particular, irisin is able to increase bone cortical mass by stimulating the osteoblast pathways, and irisin levels are inversely correlated with the incidence of fragility fractures among postmenopausal women affected by osteoporosis...
November 20, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/29160049/lower-irisin-levels-in-coronary-artery-disease-a-meta-analysis
#6
Wenwen Guo, Baihui Zhang, Xia Wang
INTRODUCTION: Irisin is a newly discovered myokine, which is involved in energy metabolism and associated with "browning" of the white adipose tissue, obesity, diabetes mellitus and metabolic syndrome. It's still uncertain that whether irisin level is associated with coronary artery disease. The purpose of this study is to explore the relationship between irisin levels and coronary artery disease. EVIDENCE ACQUISITION: A search of PubMed, MEDLINE, Elsevier Science Direct, Springer, Web of Science and China National Knowledge Infrastructure (CNKI) for studies published from 2000 to 2017 was undertaken to identify relevant studies...
November 20, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/29159926/deep-ocean-prokaryotic-communities-are-remarkably-malleable-when-facing-long-term-starvation
#7
Marta Sebastián, Jean-Christophe Auguet, Claudia Ximena Restrepo Ortiz, Maria Montserrat Sala, Celia Marrasé, Josep M Gasol
The bathypelagic ocean is one of the largest ecosystems on Earth, and sustains half of the ocean's microbial activity. This microbial activity strongly relies on surface-derived particles, but there is growing evidence that the carbon released through solubilisation of these particles may not be sufficient to meet the energy demands of deep ocean prokaryotes. To explore how bathypelagic prokaryotes respond to the absence of external inputs of carbon, we followed the long-term (1 yr) dynamics of an enclosed community...
November 21, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/29159858/non-linear-effect-of-irradiance-on-photoheterotrophic-activity-and-growth-of-the-aerobic-anoxygenic-phototrophic-bacterium-dinoroseobacter-shibae
#8
Kasia Piwosz, David Kaftan, Jason Dean, Jiří Šetlík, Michal Koblížek
Aerobic Anoxygenic Photosynthetic (AAP) bacteria are an important component of marine microbial communities. They produce energy in light using bacteriochlorophyll a containing photosystems. This extra energy provides an advantage over purely heterotrophic bacteria. One of the most intensively studied AAP bacteria is Dinoroseobacter shibae, a member of the environmentally important Roseobacter clade. Light stimulates its growth and metabolism, but the effect of light intensity remains unclear. Here, we show that an increase in biomass along an irradiance gradient followed the exponential rise to the maximum curve, with saturation at about 300 µmol photons m(-2) s(-1) , without any inhibition at light intensities up to 600 µmol photons m(-2) s(-1) ...
November 21, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/29159707/propionyl-coa-carboxylase-pcca-1-and-pccb-1-gene-deletions-in-caenorhabditis-elegans-globally-impair-mitochondrial-energy-metabolism
#9
Kimberly A Chapman, Julian Ostrovsky, Meera Rao, Stephen D Dingley, Erzsebet Polyak, Marc Yudkoff, Rui Xiao, Michael J Bennett, Marni J Falk
Propionic acidemia (PA) is a classical inborn error of metabolism with high morbidity that results from the inability of the propionyl-CoA carboxylase (PCC) enzyme to convert propionyl-CoA to methylmalonyl-CoA. PA is inherited in an autosomal recessive fashion due to functional loss of both alleles of either PCCA or PCCB. These genes are highly conserved across evolutionarily diverse species and share extensive similarity with pcca-1 and pccb-1 in the nematode, Caenorhabditis elegans. Here, we report the global metabolic effects of deletion in a single PCC gene, either pcca-1 or pccb-1, in C...
November 20, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29159669/thyroid-hormones-and-commonly-cited-symptoms-of-overtraining-in-collegiate-female-endurance-runners
#10
Justin X Nicoll, Disa L Hatfield, Kathleen J Melanson, Christopher S Nasin
PURPOSE: Overtraining syndrome (OTS) is reported in endurance sports. Thyroid hormones (TH) regulate metabolism, mood, and energy production, and may play a role in OTS of endurance athletes. The purpose of this study was to investigate relationships in TH and symptoms of OTS in track and field endurance runners (ER). METHODS: Sixteen female track and field middle distance (MD; n = 9; age: 20.2 ± 1.5 years; ht: 167.86 ± 5.04 cm; body-mass: 57.97 ± 5...
November 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29159583/the-association-between-artificial-sweeteners-and-obesity
#11
REVIEW
Michelle Pearlman, Jon Obert, Lisa Casey
PURPOSE OF REVIEW: The purpose of this paper is to review the epidemiology of obesity and the evolution of artificial sweeteners; to examine the latest research on the effects of artificial sweeteners on the host microbiome, the gut-brain axis, glucose homeostasis, and energy consumption; and to discuss how all of these changes ultimately contribute to obesity. RECENT FINDINGS: Although artificial sweeteners were developed as a sugar substitute to help reduce insulin resistance and obesity, data in both animal models and humans suggest that the effects of artificial sweeteners may contribute to metabolic syndrome and the obesity epidemic...
November 21, 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/29159335/protective-effects-of-lipoic-acid-against-acrylamide-induced-neurotoxicity-involvement-of-mitochondrial-energy-metabolism-and-autophagy
#12
Ge Song, Zhigang Liu, Luanfeng Wang, Renjie Shi, Chuanqi Chu, Man Xiang, Qi Tian, Xuebo Liu
Acrylamide (ACR) is a chronic neurotoxin that is generated in high-starch foods during heat processing. Alpha-lipoic acid (LA) is an antioxidant that occurs in most plants and animals. The objective of this study was to reveal the mechanism of ACR-triggered neurotoxicity and identify the protective role of LA in SH-SY5Y cells. In this study, LA restored ACR-stimulated depletion of glutathione content and mitochondrial membrane potential, moderated the activation of inflammatory pathways, and recovered the Keap1/Nrf2 pathway...
November 21, 2017: Food & Function
https://www.readbyqxmd.com/read/29158891/overexpression-of-hypoxia-inducible-factor-and-metabolic-pathways-possible-targets-of-cancer
#13
REVIEW
Davinder Singh, Rohit Arora, Pardeep Kaur, Balbir Singh, Rahul Mannan, Saroj Arora
Cancer, the main cause of human deaths in the modern world is a group of diseases. Anticancer drug discovery is a challenge for scientists because of involvement of multiple survival pathways of cancer cells. An extensive study on the regulation of each step of these pathways may help find a potential cancer target. Up-regulated HIF-1 expression and altered metabolic pathways are two classical characteristics of cancer. Oxygen-dependent (through pVHL, PHDs, calcium-mediated) and independent (through growth factor signaling pathway, mdm2 pathway, HSP90) regulation of HIF-1α leads to angiogenesis, metastasis, and cell survival...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/29158334/global-transcriptome-sequencing-reveals-molecular-profiles-of-summer-diapause-induction-stage-of-onion-maggot-delia-antiqua-diptera-anthomyiidae
#14
Shuang Ren, You-Jin Hao, Bin Chen, You-Ping Yin
The onion maggot, Delia antiqua, is a worldwide subterranean pest and can enter diapause during summer and winter seasons. The molecular regulation of the ontogenesis transition remains largely unknown. Here we used high-throughput RNA-Seq to identify candidate genes and processes linked to summer diapause induction by comparing the transcriptome differences between the most sensitive larval developmental stage of summer-diapause (SD) and non-diapause (ND). Nine pair-wise comparisons were performed and significantly differentially regulated transcripts were identified...
November 20, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29158250/increased-liver-fatty-acid-uptake-is-partly-reversed-and-liver-fat-content-normalized-after-bariatric-surgery
#15
Heidi Immonen, Jarna C Hannukainen, Nobuyuki Kudomi, Jussi Pihlajamäki, Virva Saunavaara, Jukka Laine, Paulina Salminen, Terho Lehtimäki, Tam Pham, Patricia Iozzo, Pirjo Nuutila
OBJECTIVE: Changes in liver fatty acid metabolism are important in understanding the mechanisms of diabetes remission and metabolic changes after bariatric surgery. RESEARCH DESIGN AND METHODS: Liver fatty acid uptake (LFU), blood flow, and fat content (LFC) were measured in 25 obese subjects before bariatric surgery and 6 months after using positron emission tomography/computed tomography and MRS; 14 lean individuals served as the control subjects. RESULTS: The increased LFU in obese subjects was associated with body adiposity...
November 20, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29158222/trehalose-metabolism-genes-render-rice-white-tip-nematode-aphelenchoides-besseyi-nematoda-aphelenchoididae-resistant-to-anaerobic-environment
#16
Qiaoli Chen, Feng Wang, Danlei Li, Ruizhi Zhang, Yaming Ling
After experiencing anaerobic environments, Aphelenchoides besseyi will enter a state of suspended animation known as anoxybiosis, which may use trehalose for energy supply to survive. To identify the function of trehalose metabolism, two trehalose-6-phosphate synthase (TPS) genes (Ab-tps1 and Ab-tps2) encoding enzymes catalyzing trehalose synthesis and three trehalase (TRE) genes (Ab-ntre1, Ab-ntre2 and Ab-atre) encoding enzymes catalyzing the hydrolysis of trehalose were identified and investigated. Ab-tps1 and Ab-tps2 were active when A...
November 20, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29157387/non-small-cell-lung-cancer-pet-imaging-beyond-f18-fluorodeoxyglucose
#17
REVIEW
Gang Cheng
F18 Flurodeoxyglucose (FDG) is a nonspecific PET tracer representing tumor energy metabolism, with common false-positive and false-negative findings in clinical practice. Non-small cell lung cancer is highly heterogeneous histologically, biologically, and molecularly. Novel PET tracers designed to characterize a specific aspect of tumor biology or a pathway-specific molecular target have the potential to provide noninvasive key information in tumor heterogeneity for patient stratification and in the assessment of treatment response...
January 2018: PET Clinics
https://www.readbyqxmd.com/read/29157255/effects-of-antarctic-krill-oil-on-lipid-and-glucose-metabolism-in-c57bl-6j-mice-fed-with-high-fat-diet
#18
Dewei Sun, Liang Zhang, Hongjian Chen, Rong Feng, Peirang Cao, Yuanfa Liu
BACKGROUND: Obesity and other metabolic diseases have become epidemic which greatly affect human health. Diets with healthy nutrition are efficient means to prevent this epidemic occurrence. Novel food resources and process technology were needed for these purpose. In this study, Antarctic krill oil (KO) extracted from a dry krill by a procedure of hot pump dehydration in combined with freezing-drying was used to investigate health effect in animals including the growth, lipid and glucose metabolism...
November 21, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29157252/diet-quality-and-therapeutic-targets-in-patients-with-type-2-diabetes-evaluation-of-concordance-between-dietary-indexes
#19
Juliana Peçanha Antonio, Vanessa Costa da Rosa, Roberta Aguiar Sarmento, Jussara Carnevale de Almeida
BACKGROUND: This study aimed to evaluate the concordance between two dietary indexes, the Healthy Eating Index (HEI) and the Diabetes Healthy Eating Index (DHEI), in evaluating diet quality and its possible association with therapeutic targets in patients with type 2 diabetes. METHODS: Cross-sectional study of outpatients with type 2 diabetes mellitus treated at a university hospital. Dietary information was obtained from a quantitative food frequency questionnaire (previously validated for use in patients with type 2 diabetes) and converted into daily intakes...
November 21, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/29157227/metabolic-adaptation-of-two-in-silico-mutants-of-mycobacterium-tuberculosis-during-infection
#20
Víctor A López-Agudelo, Andres Baena, Howard Ramirez-Malule, Silvia Ochoa, Luis F Barrera, Rigoberto Ríos-Estepa
BACKGROUND: Up to date, Mycobacterium tuberculosis (Mtb) remains as the worst intracellular killer pathogen. To establish infection, inside the granuloma, Mtb reprograms its metabolism to support both growth and survival, keeping a balance between catabolism, anabolism and energy supply. Mtb knockouts with the faculty of being essential on a wide range of nutritional conditions are deemed as target candidates for tuberculosis (TB) treatment. Constraint-based genome-scale modeling is considered as a promising tool for evaluating genetic and nutritional perturbations on Mtb metabolic reprogramming...
November 21, 2017: BMC Systems Biology
keyword
keyword
19905
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"