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https://www.readbyqxmd.com/read/28429991/effects-of-medium-chain-triglycerides-on-intestinal-morphology-and-energy-metabolism-of-intrauterine-growth-retarded-weanling-piglets
#1
Li-Li Zhang, Hao Zhang, Yue Li, Tian Wang
It has been shown that there is a relationship between intrauterine growth retardation (IUGR) and postnatal intestinal damage involved in energy deficits. Therefore, the present study was conducted to investigate the effect of medium-chain triglycerides (MCT) on the intestinal morphology, intestinal function and energy metabolism of piglets with IUGR. At weaning (21 ± 1.1 d of age), 24 IUGR piglets and 24 normal birth weight (NBW) piglets were selected according to their birth weights (BW) (IUGR: 0.95 ± 0...
June 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28427261/hot-hole-photoelectrochemistry-on-au-sio2-au-nanoparticles
#2
Andrea E Schlather, Alejandro Manjavacas, Adam Lauchner, Valeria Spolon Marangoni, Christopher J DeSantis, Peter Nordlander, Naomi J Halas
There is currently a worldwide need to develop efficient photocatalytic materials that can reduce the high energy cost of common industrial chemical processes. One possible solution focuses on metallic nanoparticles (NPs) that can act as efficient absorbers of light due to their surface plasmon resonance. Recent work indicates that small NPs, when photoexcited, may allow for efficient electron or hole transfer necessary for photocatalysis. Here we investigate the mechanisms behind hot hole carrier dynamics by studying the photo-driven oxidation of citrate ions on Au@SiO2@Au core-shell nanoparticles...
April 20, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28408661/multiomics-of-tomato-glandular-trichomes-reveals-distinct-features-of-central-carbon-metabolism-supporting-high-productivity-of-specialized-metabolites
#3
Gerd Balcke, Stefan Bennewitz, Nick Bergau, Benedikt Athmer, Anja Henning, Petra Majovsky, José M Jiménez-Gómez, Wolfgang Hoehenwarter, Alain F Tissier
Glandular trichomes are metabolic cell factories with the capacity to produce large quantities of secondary metabolites. Little is known about the connection between central carbon metabolism and metabolic productivity for secondary metabolites in glandular trichomes. To address this gap in our knowledge, we performed comparative metabolomics, transcriptomics, proteomics and 13C-labeling of type VI glandular trichomes and leaves from a cultivated (Solanum lycopersicum LA4024) and a wild (Solanum habrochaites LA1777) tomato accession...
April 13, 2017: Plant Cell
https://www.readbyqxmd.com/read/28404582/histone-deacetylase-activity-modulates-exercise-induced-skeletal-muscle-plasticity-in-zebrafish-danio-rerio
#4
Alec Izaac Marcus Simmonds, Frank Seebacher
Aerobic exercise has a positive impact on animals by enhancing skeletal muscle function and locomotor performance. Responses of skeletal muscle to exercise involve changes in energy metabolism, calcium handling, and the composition of contractile protein isoforms, which together influence contractile properties. Histone deacetylases (HDAC) can cause short-term changes in gene expression, and may thereby mediate plasticity in contractile properties of skeletal muscle in response to exercise. The aim of this project was to determine (in zebrafish, Danio rerio) the traits that mediate inter-individual differences in sustained and sprint performance, and to determine whether inhibiting class I and II HDACs mediates exercise-induced changes in these traits...
April 12, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28386385/effects-of-dietary-leucine-supplementation-on-the-hepatic-mitochondrial-biogenesis-and-energy-metabolism-in-normal-birth-weight-and-intrauterine-growth-retarded-weanling-piglets
#5
Weipeng Su, Wen Xu, Hao Zhang, Zhixiong Ying, Le Zhou, Lili Zhang, Tian Wang
BACKGROUND/OBJECTIVES: The study was conducted to evaluate the effects of dietary leucine supplementation on mitochondrial biogenesis and energy metabolism in the liver of normal birth weight (NBW) and intrauterine growth-retarded (IUGR) weanling piglets. MATERIALS/METHODS: A total of sixteen pairs of NBW and IUGR piglets from sixteen sows were selected according to their birth weight. At postnatal day 14, all piglets were weaned and fed either a control diet or a leucine-supplemented diet for 21 d...
April 2017: Nutrition Research and Practice
https://www.readbyqxmd.com/read/28381467/hepatic-ketogenesis-induced-by-middle-cerebral-artery-occlusion-in-mice
#6
Konrad Koch, Dirk Berressem, Jan Konietzka, Anna Thinnes, Gunter P Eckert, Jochen Klein
BACKGROUND: Ketone bodies are known to substitute for glucose as brain fuel when glucose availability is low. Ketogenic diets have been described as neuroprotective. Similar data have been reported for triheptanoin, a fatty oil and anaplerotic compound. In this study, we monitored the changes of energy metabolites in liver, blood, and brain after transient brain ischemia to test for ketone body formation induced by experimental stroke. METHODS AND RESULTS: Mice were fed a standard carbohydrate-rich diet or 2 fat-rich diets, 1 enriched in triheptanoin and 1 in soybean oil...
April 5, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28381263/engineering-halomonas-species-td01-for-enhanced-polyhydroxyalkanoates-synthesis-via-crispri
#7
Wei Tao, Li Lv, Guo-Qiang Chen
BACKGROUND: Clustered regularly interspaced short palindromic repeats interference (CRISPRi) has provided an efficient approach for targeted gene inhibition. A non-model microorganism Halomonas species TD01 has been developed as a promising industrial producer of polyhydroxyalkanoates (PHA), a family of biodegradable polyesters accumulated by bacteria as a carbon and energy reserve compound. A controllable gene repression system, such as CRISPRi, is needed for Halomonas sp. TD01 to regulate its gene expression levels...
April 6, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28364409/metabolomics-analysis-of-anaphylactoid-reaction-reveals-its-mechanism-in-a-rat-model
#8
Yubin Xu, Na Guo, Deqiang Dou, Xiaoku Ran, Chunyan Liu
BACKGROUND: Anaphylactoid reactions, accounting for more than 77% of all immune-mediated immediate hypersensitivity reactions, have become a serious threat to public health, but their effect mechanism is not clear and diagnostic tests are limited. Comprehensive metabolite analysis may reveal the anaphylactoid effect mechanism systematically and provide reference for future diagnostic purposes. METHODS: Plasma from Brown Norway rats given intravenous injection of saline, compound 48/80 (2...
April 1, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/28361965/transcriptomics-and-proteomic-studies-reveal-acaricidal-mechanism-of-octadecanoic-acid-3-4-tetrahydrofuran-diester-against-sarcoptes-scabiei-var-cuniculi
#9
Xu Song, Zhenzhen Chen, Renyong Jia, Mei Cao, Yuanfeng Zou, Lixia Li, Xiaoxia Liang, Lizi Yin, Changliang He, Guizhou Yue, Zhongqiong Yin
In our previous study, a new compound, octadecanoic acid-3, 4-tetrahydrofuran diester, possessing potent acaricidal activity was obtained from neem oil. This study performed RNA-seq transcriptomics and iTRAQ proteomics to uncover the acaricidal mechanism of the compound against Sarcoptes scabiei var. cuniculi. The results of transcriptomics indicated that after treatment with octadecanoic acid-3, 4-tetrahydrofuran diester, genes related to "Energy metabolism" were significantly up-/down-regulated, including citrate cycle, oxidative phosphorylation pathway and fatty acid metabolism...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28351009/the-influence-of-citrate-and-oxalate-on-99-tc-vii-cs-np-v-and-u-vi-sorption-to-a-savannah-river-site-soil
#10
D Montgomery, K Barber, N Edayilam, K Oqujiuba, S Young, T Biotidara, A Gathers, M Danjaji, N Tharayil, N Martinez, B Powell
Batch sorption experiments were conducted with 0.5-50 ppb (99)Tc, (133)Cs, (237)Np and U in the presence and absence of citrate and/or oxalate in a 25 g/L Savannah River Site (SRS) soil suspension. Citrate and oxalate were the ligands of choice due to their relevancy to plant exudates, the nuclides were selected for their wide range of biogeochemical behavior, and the soil from SRS was selected as a model Department of Energy (DOE) site soil. Batch samples were continually mixed on a rotary shaker and maintained at a pH of approximately 5...
March 25, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28337215/root-adaptive-responses-to-aluminum-treatment-revealed-by-rna-seq-in-two-citrus-species-with-different-aluminum-tolerance
#11
Peng Guo, Yi-Ping Qi, Lin-Tong Yang, Ning-Wei Lai, Xin Ye, Yi Yang, Li-Song Chen
Seedlings of aluminum (Al)-tolerant Citrus sinensis and Al-intolerant Citrus grandis were fertigated daily with nutrient solution containing 0 and 1.0 mM AlCl3●6H2O for 18 weeks. The Al-induced decreases of biomass and root total soluble proteins only occurred in C. grandis, demonstrating that C. sinensis had higher Al-tolerance than C. grandis. Under Al-treatment, C. sinensis roots secreted more citrate and malate than C. grandis ones; less Al was accumulated in C. sinenis than in C. grandis leaves. The Al-induced reduction of phosphorus was lesser in C...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28337027/obesity-induced-decreases-in-muscle-performance-are-not-reversed-by-weight-loss
#12
F Seebacher, J Tallis, K McShea, R S James
BACKGROUND/OBJECTIVES: Obesity can affect muscle phenotypes, and may thereby constrain movement and energy expenditure. Weight loss is a common and intuitive intervention for obesity, but it is not known whether the effects of obesity on muscle function are reversible by weight loss. Here we tested whether obesity-induced changes in muscle metabolic and contractile phenotypes are reversible by weight loss. SUBJECTS/METHODS: We used zebrafish (Danio rerio) in a factorial design to compare energy metabolism, locomotor capacity, muscle isometric force and work-loop power output, and myosin heavy chain composition between lean fish, diet-induced obese fish, and fish that were obese and then returned to lean body mass following diet restriction...
March 24, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28336129/labile-iron-potentiates-ascorbate-dependent-reduction-and-mobilization-of-ferritin-iron
#13
Charles Badu-Boateng, Sofia Pardalaki, Claude Wolf, Sonia Lajnef, Fabienne Peyrot, Richard J Naftalin
Ascorbate mobilizes iron from equine spleen ferritin by two separate processes. Ascorbate alone mobilizes ferritin iron with an apparent Km (ascorbate) ≈1.5mM. Labile iron >2μM, complexed with citrate (10mM), synergises ascorbate-dependent iron mobilization by decreasing the apparent Km (ascorbate) to ≈270μM and raising maximal mobilization rate by ≈5-fold. Catalase reduces the apparent Km(ascorbate) for both ascorbate and ascorbate+iron dependent mobilization by ≈80%. Iron mobilization by ascorbate alone has a higher activation energy (Ea=45...
March 21, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28327992/cyst-fluid-from-cystic-malignant-brain-tumors-a-reservoir-of-nutrients-including-growth-factor-like-nutrients-for-tumor-cells
#14
Daniel Dahlberg, Eduard A Struys, Erwin E Jansen, Lars Mørkrid, Øivind Midttun, Bjørnar Hassel
BACKGROUND: Brain tumors may have cysts, whose content of nutrients could influence tumor cell microenvironment and growth. OBJECTIVE: To measure nutrients in cyst fluid from glioblastoma multiforme (GBM) and metastatic brain tumors. METHODS: Quantification of nutrients in cyst fluid from 12 to 18 GBMs and 4 to 10 metastatic brain tumors. RESULTS: GBM cysts contained glucose at 2.2 mmol/L (median value; range <0.8-3...
January 25, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28327741/new-polyaminocarboxylate-macrocycles-containing-phenolate-binding-units-synthesis-luminescent-and-relaxometric-properties-of-their-lanthanide-complexes
#15
Morgane Enel, Nadine Leygue, Stéphane Balayssac, Sophie Laurent, Chantal Galaup, Luce Vander Elst, Claude Picard
The synthesis of two new polyaminocarboxylate macrocycles incorporating one or two intracyclic phenol units (H4L(1) and H8L(2), respectively) is described. The 12-membered H4L(1) macrocycle leads to soluble and stable mononuclear Ln(III) complexes of [(L(1))Ln(H2O)2](-) composition (Ln = Eu, Tb and Gd) in aqueous solutions. In Tris buffer (pH 7.4), the [(L(1))Tb(H2O)2](-) complex displays a suitable efficiency for sensitized emission (ηsens = 48%) and a high luminescence quantum yield (Φ = 22%), which is worthy of note for a bis-hydrated terbium complex...
March 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28327718/can-charged-colloidal-particles-increase-the-thermoelectric-energy-conversion-efficiency
#16
Thomas J Salez, Bo Tao Huang, Maud Rietjens, Marco Bonetti, Cécile Wiertel-Gasquet, Michel Roger, Cleber Lopes Filomeno, Emmanuelle Dubois, Régine Perzynski, Sawako Nakamae
Currently, liquid thermocells are receiving increasing attention as an inexpensive alternative to conventional solid-state thermoelectrics for low-grade waste heat recovery applications. Here we present a novel path to increase the Seebeck coefficient of liquid thermoelectric materials using charged colloidal suspensions; namely, ionically stabilized magnetic nanoparticles (ferrofluids) dispersed in aqueous potassium ferro-/ferri-cyanide electrolytes. The dependency of thermoelectric potential on experimental parameters such as nanoparticle concentration and types of solute ions (lithium citrate and tetrabutylammonium citrate) is examined to reveal the relative contributions from the thermogalvanic potential of redox couples and the entropy of transfer of nanoparticles and ions...
March 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28321925/effects-of-6-month-aerobic-interval-training-on-skeletal-muscle-metabolism-in-middle-aged-metabolic-syndrome-patients
#17
A Guadalupe-Grau, V E Fernández-Elías, J F Ortega, F Dela, J W Helge, R Mora-Rodriguez
Aerobic interval training (AIT) improves the health of metabolic syndrome patients (MetS) more than moderate intensity continuous training. However, AIT has not been shown to reverse all metabolic syndrome risk factors, possibly due to the limited duration of the training programs. Thus, we assessed the effects of 6 months of AIT on cardio-metabolic health and muscle metabolism in middle-aged MetS. Eleven MetS (54.5±0.7 years old) underwent 6 months of 3 days a week supervised AIT program on a cycle ergometer...
March 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28319140/role-of-muscle-il-6-in-gender-specific-metabolism-in-mice
#18
Amalia Molinero, Antonio Fernandez-Perez, Aina Mogas, Mercedes Giralt, Gemma Comes, Olaya Fernandez-Gayol, Mario Vallejo, Juan Hidalgo
The aim of the present work was to further explore the physiological roles of muscle-derived IL-6. Adult-floxed and conditional skeletal muscle IL-6 knock out male and female mice were used to study energy expenditure (indirect calorimetry at rest and during treadmill exercise, and body temperature cycle during the light phase) and energy intake (response to fast/refeeding). We also evaluated the responses to leptin and the activity of the insulin signalling pathway in skeletal muscle and liver by phosphorylation of Akt at Ser 473...
2017: PloS One
https://www.readbyqxmd.com/read/28300753/krebs-cycle-intermediates-protective-against-oxidative-stress-by-modulating-the-level-of-reactive-oxygen-species-in-neuronal-ht22-cells
#19
Kenta Sawa, Takumi Uematsu, Yusuke Korenaga, Ryuya Hirasawa, Masatoshi Kikuchi, Kyohei Murata, Jian Zhang, Xiaoqing Gai, Kazuichi Sakamoto, Tomoyuki Koyama, Takumi Satoh
Krebs cycle intermediates (KCIs) are reported to function as energy substrates in mitochondria and to exert antioxidants effects on the brain. The present study was designed to identify which KCIs are effective neuroprotective compounds against oxidative stress in neuronal cells. Here we found that pyruvate, oxaloacetate, and α-ketoglutarate, but not lactate, citrate, iso-citrate, succinate, fumarate, or malate, protected HT22 cells against hydrogen peroxide-mediated toxicity. These three intermediates reduced the production of hydrogen peroxide-activated reactive oxygen species, measured in terms of 2',7'-dichlorofluorescein diacetate fluorescence...
March 16, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28298542/lipid-emulsion-added-to-a-liquid-high-carbohydrate-diet-and-voluntary-running-exercise-reduce-lipogenesis-and-ameliorate-early-stage-hepatic-steatosis-in-mice
#20
Kuan-Hsun Huang, Lei Hao, Philip B Smith, Connie J Rogers, Andrew D Patterson, A Catharine Ross
Background: The use of parenteral nutrition formulas is often associated with the development of hepatic steatosis. We have shown previously that the addition of a lipid emulsion (LE) rich in n-6 (ω-6) fatty acids (FAs) ameliorated triglyceride (TG) accumulation in the livers of nonobese mice fed a high-carbohydrate diet (HCD) for 5 wk. However, it remains unclear how rapidly this condition develops and whether it can be prevented by LE with or without a running wheel for voluntary exercise (Exe).Objective: We investigated in an 8-d study whether mice develop steatosis and whether the administration of LE with or without Exe reduces the concentration of total FAs and prevents an increase in the expression of genes in the liver associated with lipogenesis...
March 15, 2017: Journal of Nutrition
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