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https://www.readbyqxmd.com/read/28738672/physiological-and-physical-responses-to-wearing-compression-garments-during-soccer-matches-and-recovery
#1
Diego Marqués-Jiménez, Julio Calleja-González, Iñaki Arratibel, Anne Delextrat, Fernando Uriarte, Nicolás Terrados
BACKGROUND: There is not enough information on the effects of compression therapy in soccer players during recovery after matches. So the objective of this study was to examine the effect of wearing compression garments during soccer matches and during recovery period on physical responses. METHODS: Eighteen semi-professional soccer players participated in this study. A two-stage crossover design was chosen. Participants acted as controls in one match and were assigned to an experimental group (compression stockings group, full-leg compression group, shorts group) in the other match...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738671/inertial-flywheel-resistance-training-and-muscle-oxygen-saturation
#2
Rafael Timón, Jesús G Ponce-González, José L González-Montesinos, Guillermo Olcina, Alejandro Pérez-Pérez, José Castro-Piñero
BACKGROUND: The inertial flywheel device causes an increase in eccentric overload during training. The aim was to study muscle oxygen saturation produced during an inertial flywheel squat training, comparing it with a barbell squat training. METHODS: Twelve male adults performed a barbell squat training (3 x 8 reps, 75-80% 1RM) and a flywheel squat training (3 x 8 reps, all-out). Muscle oxygen saturation (%SmO2), total hemoglobin (tHb), reoxygenation, heart rate (HR), lactate, vertical jumps, maximal voluntary isometric contraction and rated perceived exertion (RPE) were studied...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738660/novel-biomimetic-enzyme-for-sensitive-detection-of-superoxide-anions
#3
Fang Peng, Tingting Xu, Fan Wu, Chunxue Ma, Yuhong Liu, Jianying Li, Bo Zhao, Chun Mao
Superoxide anion (O2(•-)), one of the most active reactive oxygen species (ROS) in micro-environment of the human body, is involved in some diseases if there is excess O2(•-) associated with oxidative stress. Accurate detection of its concentration has important medical diagnostic significance. In this work, a new electrochemical sensor was designed and fabricated for sensitive detection based on Mn-superoxide dismutase (MnSOD) that decorated onto the surface of magnetic polymeric nanotubes by surface self-assembly processes...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738635/microwave-induced-combustion-thermal-and-morphological-aspects-for-understanding-the-mechanism-of-ignition-process-for-analytical-applications
#4
Matheus F Pedrotti, Leticia S F Pereira, Cezar A Bizzi, Jose N G Paniz, Juliano S Barin, Erico M M Flores
In the present work, for the first time a systematic study was performed using an infrared camera and scanning electron microscopy (SEM) coupled to energy dispersive X-ray spectrometry (EDS) to evaluate the mechanisms involved in microwave-induced combustion method, which has been extensively used for sample preparation. Cellulose and glass fiber discs, wetted with the igniter solution (6molL(-1) NH4NO3), were evaluated under microwave field in a monomode system. The temperature of the discs surface was recorded during microwave irradiation and the effect of NH4NO3 concentration and irradiation time on cellulose oxidation was evaluated...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738574/a-highly-selective-and-sensitive-fluorescent-probe-for-hypochlorous-acid-and-its-lysosome-targetable-biological-applications
#5
Chang Liu, Xiaojie Jiao, Song He, Liancheng Zhao, Xianshun Zeng
A novel lysosome-targetable fluorescence probe PT-1 based on a photoinduced electron transfer (PET) mechanism has been designed and synthesized. For comparison, the probe PT-2 without morpholine moiety as a lysosome-directing group was also synthesized and investigated. Probes PT-1 and PT-2 exhibited high selectivity, high sensitivity (with the detection limits down to the 10(-10)M range) and response in real time (within 10s) toward HOCl over other reactive oxygen species (ROS). Both PT-1 and PT-2 were cell permeable and enabled them to be used for monitoring of HOCl in living cells...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738557/multielemental-analysis-of-18-essential-and-toxic-elements-in-amniotic-fluid-samples-by-icp-ms-full-procedure-validation-and-estimation-of-measurement-uncertainty
#6
B Markiewicz, A Sajnóg, W Lorenc, A Hanć, I Komorowicz, J Suliburska, R Kocyłowski, D Barałkiewicz
Amniotic fluid is the substantial factor in the development of an embryo and fetus due to the fact that water and solutes contained in it penetrate the fetal membranes in an hydrostatic and osmotic way as well as being swallowed by the fetus. Elemental composition of amniotic fluid influences the growth and health of the fetus, therefore, an analysis of amniotic fluid is important because the results would indicate abnormal levels of minerals or toxic elements. Inductively coupled plasma mass spectroscopy (ICP-MS) is often used for determination of trace and ultra-trace level elements in a wide range of matrices including biological samples because of its unique analytical capabilities...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738514/unraveling-the-impact-of-nanoscale-zero-valent-iron-on-the-nitrogen-removal-performance-and-microbial-community-of-anammox-sludge
#7
Zheng-Zhe Zhang, Jia-Jia Xu, Zhi-Jian Shi, Yu-Hui Bai, Ya-Fei Cheng, Hai-Yan Hu, Ren-Cun Jin
Given the increasing use of nanoscale zero-valent iron (NZVI) particles for environmental remediation and wastewater treatment, their potential impact on anaerobic ammonium oxidation (anammox) bacteria was investigated in this study using anammox sludge. Batch assays showed that NZVI concentrations up to 200mgL(-1) did not affect anammox activity, reactive oxygen species production, and cell membrane integrity. The nitrogen removal efficiency of the continuous-flow reactor fluctuated in the presence of 20 or 50mgL(-1) NZVI, but it could return to normal over time, even at 200mgL(-1) NZVI...
July 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28738491/-establishment-of-a-model-of-hydrogen-peroxide-induced-injury-in-pulmonary-artery-endothelium-cells-and-relevant-mechanisms-of-oxidative-stress
#8
J Ye, Y Y He, Y Yan, J H Zhao, T Y Lian, X J Wang, Y Yan, S J Zhang, S H Yang, Z C Jing
Objective: To establish a hydrogen peroxide (H(2)O(2)) induced injury model of pulmonary artery endothelial cells (PAECs) and explore the molecular mechanisms of oxidative stress on the structure and function of PAECs in this model. Methods: Human PAECs were treated with H(2)O(2) at different concentrations (25, 50, 100, 200, 400, 800, 1 600, 3 200, 6 400 μmol/L) for 4 and 24 h, respectively. The PAECs survival curve was obtained according to the cell viability measured by CCK-8 assay. The cell apoptosis of PAECs was detected by flow cytometry...
July 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28738409/elements-of-eoarchean-life-trapped-in-mineral-inclusions
#9
T Hassenkam, M P Andersson, K N Dalby, D M A Mackenzie, M T Rosing
Metasedimentary rocks from Isua, West Greenland (over 3,700 million years old) contain (13)C-depleted carbonaceous compounds, with isotopic ratios that are compatible with a biogenic origin. Metamorphic garnet crystals in these rocks contain trails of carbonaceous inclusions that are contiguous with carbon-rich sedimentary beds in the host rock, where carbon is fully graphitized. Previous studies have not been able to document other elements of life (mainly hydrogen, oxygen, nitrogen and phosphorus) structurally bound to this carbonaceous material...
July 24, 2017: Nature
https://www.readbyqxmd.com/read/28738354/review-of-extracorporeal-membrane-oxygenation-and-dialysis-based-liver-support-devices-for-the-use-of-nephrologists
#10
Tamim Hamdi, Biff F Palmer
Acute kidney injury in the intensive care unit (ICU) is a manifestation of an underlying severe illness that commonly involves other organ systems. Pulmonary, cardiac, and hepatic failures are the most prevalent. This article provides a simplified review of the technical aspects of extracorporeal cardiopulmonary and liver support devices used in the adult ICU patient, as well as a summary of the most relevant and up-to-date clinical evidence that supports their use.
July 22, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28738281/edta-functionalized-fe3o4-graphene-oxide-for-efficient-removal-of-u-vi-from-aqueous-solutions
#11
Donglin Zhao, Qi Zhang, Han Xuan, Yan Chen, Kehua Zhang, Shaojie Feng, Ahmed Alsaedi, Tasawar Hayat, Changlun Chen
In this study, a regenerable magnetic ligand material (EDTA-mGO) was fabricated by binding chelating groups (EDTA) onto Fe3O4/graphene oxide and applied to remove U(VI) from aqueous solution. The sorption experiments were investigated under different experimental conditions, such as temperature, contact time and pH. EDTA-mGO showed fast removal capacity for U(VI) (<1.5h) with high sorption ability (277.43mg/g). The removal mechanisms mainly attributed to the metal-binding organic ligand (EDTA) and the electrostatic attractions between U(VI) and oxygenic functional groups...
July 17, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28738269/an-anti-inflammatory-effect-of-red-microalga-polysaccharides-in-coronary-artery-endothelial-cells
#12
Oshrat Levy-Ontman, Mahmoud Huleihel, Rachel Hamias, Talya Wolak, Esther Paran
BACKGROUND AND AIMS: Polysaccharides (PSs) produced by the red microalga Porphyridium sp. were reported to exhibit anti-inflammatory bioactivities in the human skin. The primary goal of the present research was to assess whether PSs attenuate inflammatory processes by interfering with tumour necrosis factor-alpha (TNF-α)-induced inflammation, in human coronary artery endothelial cells (HCAECs). METHODS: Functional and inflammatory markers were quantified in TNF-α-stimulated HCAECs, with and without pre-treatment with PSs...
July 16, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28738167/methylene-blue-improves-mitochondrial-respiration-and-decreases-oxidative-stress-in-a-substrate-dependent-manner-in-diabetic-rat-hearts
#13
Oana M Duicu, Andreea Privistirescu, Adrian Wolf, Alexandra Petrus, Maria D Dănilă, Corina Ratiu, Danina M Muntean, Adrian Sturza
Diabetic cardiomyopathy has been systematically associated with compromised mitochondrial energetics and increased generation of reactive oxygen species (ROS) that underlie its progression to heart failure. Methylene blue is a redox-drug with reported protective effects mainly on brain mitochondria. The present study was purported to characterize the effects of acute administration of methylene blue on mitochondrial respiration, H2O2 production, and calcium sensitivity in rat heart mitochondria isolated from healthy and 2 months (streptozotocin-induced) diabetic rats...
July 24, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28738154/modifying-surface-chemistry-of-metal-oxides-for-boosting-dissolution-kinetics-in-water-by-liquid-cell-electron-microscopy
#14
Yue Lu, Jiguo Geng, Kuan Wang, Wei Zhang, Wenqiang Ding, Zhenhua Zhang, Shaohua Xie, Hongxing Dai, Fu-Rong Chen, Manling Sui
Dissolution of metal oxides is fundamentally important for understanding mineral evolution and micromachining oxide functional materials. In general, dissolution of metal oxides is a slow and inefficient chemical reaction. Here, by introducing oxygen deficiencies to modify the surface chemistry of oxides, we can boost the dissolution kinetics of metal oxides in water, as in situ demonstrated in a liquid environmental transmission electron microscope (LETEM). The dissolution rate constant significantly increases by 16-19 orders of magnitude, equivalently a reduction of 0...
July 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28738148/biofunctional-polymer-lipid-hybrid-high-density-lipoprotein-mimicking-nanoparticles-loading-anti-mir155-for-combined-antiatherogenic-effects-on-macrophages
#15
Jing Lu, Yi Zhao, Xiaoju Zhou, Jian Hua He, Yun Yang, Cuiping Jiang, Zitong Qi, Wenli Zhang, Jianping Liu
A biofunctional polymer-lipid hybrid high density lipoprotein-mimicking nanoparticle (HNP) loading anti-miR155 was constructed for combined antiatherogenic effects on macrophages. The HNP consisted of an anti-miR155 core condensed by acid-labile polyethylenimine (acid-labile PEI) polymers and a lipid bilayer coat that was decorated with apolipoprotein A-1, termed acid-labile PEI/HNP. The acid-labile PEI was synthesized with low molecular weight PEI and glutaraldehyde to reduce the cytotoxicity and facilitate nucleic acids escaping from acidic endolysosomes...
July 24, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28738079/comparison-between-intra-articular-ozone-and-placebo-in-the-treatment-of-knee-osteoarthritis-a-randomized-double-blinded-placebo-controlled-study
#16
Carlos César Lopes de Jesus, Fânia Cristina Dos Santos, Luciana Maria Oliveira Bueno de Jesus, Iara Monteiro, Maria Sonia Sousa Castro Sant'Ana, Virginia Fernandes Moça Trevisani
OBJECTIVE: The aim of the trial was to determine the effectiveness of oxygen-ozone injections on knee osteoarthritis concerning pain reduction, joint functional improvement, and quality of life. METHODS: In this randomized, double-blinded, placebo controlled clinical trial, 98 patients with symptomatic knee osteoarthritis (OA) were randomized into two groups receiving intra-articular 20 μg/ml of ozone (OZ) or placebo (PBO) for 8 weeks. The efficacy outcomes for knee OA were the Visual Analogue Scale (VAS), Lequesne Index, Timed Up and Go Test (TUG Test), SF-36, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Geriatric Pain Measure (GPM)...
2017: PloS One
https://www.readbyqxmd.com/read/28737918/reactive-inelastic-and-dissociation-processes-in-collisions-of-atomic-oxygen-with-molecular-nitrogen
#17
Fabrizio Esposito, Iole Armenise
We report the results of detailed calculations of reactive, inelastic and dissociative processes in collisions of atomic oxygen with molecular nitrogen in their respective electronic ground states. Cross sections are calculated as a function of collision energy in the range 0.001-10eV, considering the whole rovibrational ladder. Some problems related to the vibrational energy levels of the asymptotes of 3A" and 3A' potential energy surfaces used in this work are solved by an appropriate scaling at the level of cross sections...
July 24, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28737893/uncondensed-graphitic-carbon-nitride-on-reduced-graphene-oxide-for-oxygen-sensing-via-a-photoredox-mechanism
#18
James E Ellis, Dan C Sorescu, Seth C Burkert, David L White, Alexander Star
Melon, a polymeric, uncondensed graphitic carbon nitride with a two-dimensional structure has been coupled with reduced graphene oxide (rGO) to create an oxygen chemiresistor sensor that is active under UV photoactivation. Oxygen gas is an important sensor target in a variety of areas including industrial safety, combustion process monitoring, as well as environmental and biomedical fields. Due to the intimate electrical interface formed between melon and rGO, charge transfer of photoexcited electrons occurs between the two materials when under UV (λ=365 nm) irradiation...
July 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28737718/experimental-study-on-the-health-benefits-of-garden-landscape
#19
Juyoung Lee
To mitigate the negative effects of modern cities on health, scientists are focusing on the diverse benefits of natural environments; a conceptual approach to use gardens for promoting human health is being attempted. In this study, the effects of the visual landscape of a traditional garden on psychological and physiological activities were investigated. Eighteen male and female adults participated in this indoor experiment (mean age, 26.7 years). Twelve different landscape images for city and garden were presented continuously for 90 s...
July 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28737710/cytoprotective-effect-of-the-ucp2-sirt3-signaling-pathway-by-decreasing-mitochondrial-oxidative-stress-on-cerebral-ischemia-reperfusion-injury
#20
REVIEW
Jing Su, Jie Liu, Xiao-Yu Yan, Yong Zhang, Juan-Juan Zhang, Li-Chao Zhang, Lian-Kun Sun
Recovered blood supply after cerebral ischemia for a certain period of time fails to restore brain function, with more severe dysfunctional problems developing, called cerebral ischemia-reperfusion injury (CIR). CIR involves several extremely complex pathophysiological processes in which the interactions between key factors at various stages have not been fully elucidated. Mitochondrial dysfunction is one of the most important mechanisms of CIR. The mitochondrial deacetylase, sirtuin 3 (SIRT3), can inhibit mitochondrial oxidative stress by deacetylation, to maintain mitochondrial stability...
July 24, 2017: International Journal of Molecular Sciences
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