keyword
MENU ▼
Read by QxMD icon Read
search

Oxidative capacity

keyword
https://www.readbyqxmd.com/read/28107728/a-three-dimensional-core-shell-nanostructured-composite-of-polypyrrole-wrapped-mno2-reduced-graphene-oxide-carbon-nanotube-for-high-performance-lithium-ion-batteries
#1
Yong Li, Daixin Ye, Wen Liu, Bin Shi, Rui Guo, Haijuan Pei, Jingying Xie
Manganese oxides are promising anode materials for their high-energy density. However, they suffer from poor rate capability and fast capacity fading. Herein, we construct a three-dimensional (3D) core-shell structured polypyrrole (PPy)/MnO2-reduced graphene oxide (rGO)-carbon nanotubes (CNTs) composite via a facile two-step method. In the structure, the CNTs can facilitate fast electron conduction and keep structural integrity. The flexible and conductive rGO nanosheets work as both a reactive material and a carrier for MnO2 in-situ growth...
January 10, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28107663/antibacterial-anti-oxidant-electroactive-injectable-hydrogel-as-self-healing-wound-dressing-with-hemostasis-and-adhesiveness-for-cutaneous-wound-healing
#2
Xin Zhao, Hao Wu, Baolin Guo, Ruonan Dong, Yusheng Qiu, Peter X Ma
Injectable self-healing hydrogel dressing with multifunctional properties including anti-infection, anti-oxidative and conductivity promoting wound healing process will be highly desired in wound healing application and its design is still a challenge. We developed a series of injectable conductive self-healed hydrogels based on quaternized chitosan-g-polyaniline (QCSP) and benzaldehyde group functionalized poly(ethylene glycol)-co-poly(glycerol sebacate) (PEGS-FA) as antibacterial, anti-oxidant and electroactive dressing for cutaneous wound healing...
January 11, 2017: Biomaterials
https://www.readbyqxmd.com/read/28106984/pore-space-partition-in-metal-organic-frameworks
#3
Quan-Guo Zhai, Xianhui Bu, Xiang Zhao, Dong-Sheng Li, Pingyun Feng
Metal-organic framework (MOF) materials have emerged as one of the favorite crystalline porous materials (CPM) because of their compositional and geometric tunability and many possible applications. In efforts to develop better MOFs for gas storage and separation, a number of strategies including creation of open metal sites and implantation of Lewis base sites have been used to tune host-guest interactions. In addition to these chemical factors, the geometric features such as pore size and shape, surface area, and pore volume also play important roles in sorption energetics and uptake capacity...
January 20, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28106831/ablation-of-protein-kinase-ck2%C3%AE-in-skeletal-muscle-fibers-interferes-with-their-oxidative-capacity
#4
Nane Eiber, Luca Simeone, Said Hashemolhosseini
The tetrameric protein kinase CK2 was identified playing a role at neuromuscular junctions by studying CK2β-deficient muscle fibers in mice, and in cultured immortalized C2C12 muscle cells after individual knockdown of CK2α and CK2β subunits. In muscle cells, CK2 activity appeared to be at least required for regular aggregation of nicotinic acetylcholine receptors, which serves as a hallmark for the presence of a postsynaptic apparatus. Here, we set out to determine whether any other feature accompanies CK2β-deficient muscle fibers...
January 19, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28106721/exercise-induced-oxidative-stress-responses-in-the-pediatric-population
#5
REVIEW
Alexandra Avloniti, Athanasios Chatzinikolaou, Chariklia K Deli, Dimitris Vlachopoulos, Luis Gracia-Marco, Diamanda Leontsini, Dimitrios Draganidis, Athanasios Z Jamurtas, George Mastorakos, Ioannis G Fatouros
Adults demonstrate an upregulation of their pro- and anti-oxidant mechanisms in response to acute exercise while systematic exercise training enhances their antioxidant capacity, thereby leading to a reduced generation of free radicals both at rest and in response to exercise stress. However, less information exists regarding oxidative stress responses and the underlying mechanisms in the pediatric population. Evidence suggests that exercise-induced redox perturbations may be valuable in order to monitor exercise-induced inflammatory responses and as such training overload in children and adolescents as well as monitor optimal growth and development...
January 17, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28106292/23-hydroxytormentic-acid-protects-human-dermal-fibroblasts-by-attenuating-uva-induced-oxidative-stress
#6
Hae Jeong Youn, Ki Bbeum Kim, Hyo-Sun Han, In-Sook An, Kyu Joong Ahn
Ultraviolet A (UVA), one of the major components of sunlight, can penetrate the dermal layer of the skin and generate reactive oxygen species (ROS). It causes alterations in the dermal connective tissue and gene expression, inflammation, photoaging, and DNA damage. Therefore, the harmful effects of UVA and strategies to reduce it have been consistently investigated. 23-Hydroxytormentic acid (23-HTA) has been demonstrated to improve drug-induced nephrotoxicity and exhibit several free radical scavenging effects with other molecules...
January 20, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28106265/effects-of-self-carbon-dioxide-generation-material-for-active-packaging-on-ph-water-holding-capacity-meat-color-lipid-oxidation-and-microbial-growth-in-beef-during-cold-storage
#7
Seung Jae Lee, Seung Yun Lee, Gap Don Kim, Geun Bae Kim, Sang Keun Jin, Sun Jin Hur
BACKGROUND: Active packaging refers to the mixing of additive agents into packagingmaterials with the purpose of hold or extending food product quality and shelf life. The purpose of this study was to develop an easy and cheap active packaging in beef. Beef loin samples were divided into 3 packaging groups (C: ziplock bag-packaging, T1: vacuum-packaging, T2: active-packaging) and stored at 4 °C for 21 days. RESULTS: The water-holding capacity was significantly (p < 0...
January 20, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28105397/s-n-co-doped-graphene-nickel-cobalt-sulfide-aerogel-improved-energy-storage-and-electrocatalytic-performance
#8
Guanjie He, Mo Qiao, Wenyao Li, Yao Lu, Tingting Zhao, Rujia Zou, Bo Li, Jawwad A Darr, Junqing Hu, Maria-Magdalena Titirici, Ivan P Parkin
Metal sulfides are commonly used in energy storage and electrocatalysts due to their redox centers and active sites. Most literature reports show that their performance decreases significantly caused by oxidation in alkaline electrolyte during electrochemical testing. Herein, S and N co-doped graphene-based nickel cobalt sulfide aerogels are synthesized for use as rechargeable alkaline battery electrodes and oxygen reduction reaction (ORR) catalysts. Notably, this system shows improved cyclability due to the stabilization effect of the S and N co-doped graphene aerogel (SNGA)...
January 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28104576/nitro-fatty-acids-in-plant-signaling-new-key-mediators-of-nitric-oxide-metabolism
#9
REVIEW
Capilla Mata-Pérez, Beatriz Sánchez-Calvo, María N Padilla, Juan C Begara-Morales, Raquel Valderrama, Francisco J Corpas, Juan B Barroso
Recent studies in animal systems have shown that NO can interact with fatty acids to generate nitro-fatty acids (NO2-FAs). They are the product of the reaction between reactive nitrogen species and unsaturated fatty acids, and are considered novel mediators of cell signaling based mainly on a proven anti-inflammatory response. Although these signaling mediators have been described widely in animal systems, NO2-FAs have scarcely been studied in plants. Preliminary data have revealed the endogenous presence of free and protein-adducted NO2-FAs in extra-virgin olive oil (EVOO), which appear to be contributing to the cardiovascular benefits associated with the Mediterranean diet...
January 10, 2017: Redox Biology
https://www.readbyqxmd.com/read/28104508/exposure-to-high-levels-of-fumarate-and-succinate-leads-to-apoptotic-cytotoxicity-and-altered-global-dna-methylation-profiles-in-vitro
#10
Johannes F Wentzel, Angélique Lewies, Abel J Bronkhorst, Etresia van Dyk, Lissinda H du Plessis, Piet J Pretorius
In the Krebs cycle, succinate is oxidized to fumarate by succinate dehydrogenase (SDH), followed by the conversion of fumarate to malate by fumarate hydratase (FH). In cells with defective SDH and FH, the Krebs cycle is congested, respiration impaired and fumarate and succinate accumulates. Several studies have indicated that the accumulation of these substrates are associated with cytotoxicity and oncogenesis. High levels of succinate and fumarate induce hypoxia inducible factor (HIF1A) hydroxylases, leading to the activation of oncogenic HIF pathways...
January 16, 2017: Biochimie
https://www.readbyqxmd.com/read/28104371/in-vitro-and-in-vivo-evaluation-of-anti-arthritic-antioxidant-efficacy-of-fucoidan-from-undaria-pinnatifida-harvey-suringar
#11
Abdul-Rehman Phull, Muhammad Majid, Ihsan-Ul-Haq, Muhammad Rashid Khan, Song Ja Kim
Seaweed and their constituents have been traditionally employed for the management of various human pathologic conditions such as edema, urinary disorders and inflammatory anomalies. The current study was performed to investigate the antioxidant and anti-arthritic effects of fucoidan from Undaria pinnatifida. A noteworthy in vitro antioxidant potential at 500μg/ml in 2, 2-diphenyl-1-picrylhydrazyl scavenging assay (80% inhibition), nitrogen oxide inhibition assay (71.83%), hydroxyl scavenging assay (71.92%), iron chelating assay (73...
January 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28104348/quercetin-protects-against-heat-stroke-induced-myocardial-injury-in-male-rats-antioxidative-and-antiinflammatory-mechanisms
#12
Xiaojing Lin, Cheng-Hsien Lin, Tingbao Zhao, Dan Zuo, Zhujun Ye, Lin Liu, Mao-Tsun Lin
Heat stroke is characterilized by hyperthermia, systemic inflammation, and multiple organ failure including arterial hypotension. This definition can be fulfilled by a rat model of heat stroke used in the present study. Anesthetized animals were exposed to heat exposure (43 °C for 70 min) and then returned to room temperature (26 °C) for recovery. One hour before heat exposure, an intraperitoneal dose of quercetin (30 mg/kg) or vehicle (normal saline 1 ml/kg) was administered to the experimental groups of rats...
January 16, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28104333/response-of-lemna-gibba-l-to-high-and-environmentally-relevant-concentrations-of-ibuprofen-removal-metabolism-and-morpho-physiological-traits-for-biomonitoring-of-emerging-contaminants
#13
D Di Baccio, F Pietrini, P Bertolotto, S Pérez, D Barcelò, M Zacchini, E Donati
The increasing worldwide consumption of pharmaceuticals and personal care products such as ibuprofen (IBU) is leading to the widespread and persistent occurrence of these chemicals and their transformation products in soils and waters. Although at low concentrations, the continuous discharge of these micropollutants and the incomplete removal by the actual wastewater treatments can provoke accumulation in the environment with risks for the trophic chain. Non-target organisms as duckweed can be used for the environmental monitoring of pharmaceutical emerging contaminants...
January 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28103623/metabolic-inflexibility-with-obesity-and-the-effects-of-fenofibrate-on-skeletal-muscle-fatty-acid-oxidation
#14
Kristen E Boyle, Jacob E Friedman, Rachel C Janssen, Chantal Underkofler, Joseph A Houmard, Neda Rasouli
This study was designed to investigate mechanisms of lipid metabolic inflexibility in human obesity and the ability of fenofibrate (FENO) to increase skeletal muscle fatty acid oxidation (FAO) in primary human skeletal muscle cell cultures (HSkMC) exhibiting metabolic inflexibility. HSkMC from 10 lean and 10 obese, insulin resistant subjects were treated with excess fatty acid for 24 h (24hFA) to gauge lipid-related metabolic flexibility. Metabolically inflexible HSkMC from obese individuals were then treated with 24hFA in combination with FENO to determine effectiveness for increasing FAO...
January 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28103406/evaluation-of-the-ability-of-polyphenol-extracts-of-cocoa-and-red-grape-to-promote-the-antioxidant-response-in-yeast-using-a-rapid-multiwell-assay
#15
Ana Peláez-Soto, María Teresa Fernández-Espinar, Patricia Roig, José Vicente Gil
Saccharomyces cerevisiae has been used as a model organism to study the capacity of cocoa and red grape extracts to trigger an antioxidant response. A methodology adapted to microtiter plates has been developed to monitor yeast growth after culture preincubation with food ingredients and exposure to oxidative stress by hydrogen peroxide and menadione. This methodology proved effective in measuring the ability of cocoa and red grape extracts to promote an antioxidant response in yeast, and also the prospect of conducting dose-response studies...
January 19, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28103393/the-correlation-between-in-vitro-antioxidant-activity-and-immunomodulatory-activity-of-enzymatic-hydrolysates-from-selenium-enriched-rice-protein
#16
Yong Fang, Xi Chen, Peizhu Luo, Fei Pei, Benard Muinde Kimatu, Kunlun Liu, Mengjia Du, Weifen Qiu, Qiuhui Hu
The antioxidant and immunomodulatory activities of selenium-enriched rice protein hydrolysates (Se-PH) were evaluated by a cellular antioxidant activity test and macrophage proliferation and phagocytosis assays, respectively. The results showed that trypsin hydrolysate provided the highest proliferation rate of 60.91% at a concentration of 100 μg/mL. Moreover, a remarkable rise in the phagocytosis rates for trypsin hydrolysate (64.1%) and pepsin-trypsin hydrolysate (54.5%) was observed when the sample concentrations were increased to 50 μg/mL...
January 19, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28103249/the-green-tea-catechin-epigallocatechin-gallate-ameliorates-graft-versus-host-disease
#17
Sabine Westphal, Aleixandria McGeary, Sandra Rudloff, Andrea Wilke, Olaf Penack
Allogeneic hematopoetic stem cell transplantation (allo-HSCT) is a standard treatment for leukemia and other hematologic malignancies. The major complication of allo-HSCT is graft-versus-host-disease (GVHD), a progressive inflammatory illness characterized by donor immune cells attacking the organs of the recipient. Current GVHD prevention and treatment strategies use immune suppressive drugs and/or anti-T cell reagents these can lead to increased risk of infections and tumor relapse. Recent research demonstrated that epigallocatechin gallate (EGCG), a component found in green tea leaves at a level of 25-35% at dry weight, may be useful in the inhibition of GVHD due to its immune modulatory, anti-oxidative and anti-angiogenic capacities...
2017: PloS One
https://www.readbyqxmd.com/read/28102840/cancer-associated-fibroblasts-enact-field-cancerization-by-promoting-extratumoral-oxidative-stress
#18
Jeremy Soon Kiat Chan, Ming Jie Tan, Ming Keat Sng, Ziqiang Teo, Terri Phua, Chee Chong Choo, Liang Li, Pengcheng Zhu, Nguan Soon Tan
Histological inspection of visually normal tissue adjacent to neoplastic lesions often reveals multiple foci of cellular abnormalities. This suggests the presence of a regional carcinogenic signal that spreads oncogenic transformation and field cancerization. We observed an abundance of mutagenic reactive oxygen species in the stroma of cryosectioned patient tumor biopsies, indicative of extratumoral oxidative stress. Diffusible hydrogen peroxide (H2O2) was elevated in the conditioned medium of cultured skin epithelia at various stages of oncogenic transformation, and H2O2 production increased with greater tumor-forming and metastatic capacity of the studied cell lines...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102304/local-melatonin-application-induces-cold-tolerance-in-distant-organs-of-citrullus-lanatus-l-via-long-distance-transport
#19
Hao Li, Jingjing Chang, Junxian Zheng, Yuchuan Dong, Qiyan Liu, Xiaozhen Yang, Chunhua Wei, Yong Zhang, Jianxiang Ma, Xian Zhang
Melatonin is a ubiquitous chemical substance that regulates plant growth and responses to stress. Several recent studies show that exogenous melatonin confers cold tolerance to plants; however, the underlying mechanisms remain largely unknown. Here, we report that melatonin application at optimal dose, either on the leaves or the roots, not only induced cold stress tolerance in the site of application, but also systemically induced cold tolerance in untreated distant parts. Foliar or rhizospheric treatment with melatonin increased the melatonin levels in untreated roots or leaves, respectively, under both normal and cold stress conditions, whereas rhizospheric melatonin treatment increased the melatonin exudation rates from the xylem...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101628/rho-kinase-inhibitor-fasudil-mitigates-high-cholesterol-diet-induced-hypercholesterolemia-and-vascular-damage
#20
Nibrass Taher Abdali, Awny H Yaseen, Eman Said, Tarek M Ibrahim
The current study was designed to investigate the potential beneficial therapeutic outcome of Rho kinase inhibitor (fasudil) against hypercholesterolemia-induced myocardial and vascular injury in rabbits together with diet modification. Sixteen male rabbits were randomly divided into four groups: normal control group which received standard rabbit chow, hypercholesterolemic control group, and treated groups which received cholesterol-rich rabbit chow (1.5% cholesterol) for 8 weeks. Treated groups received either fasudil (100 mg/kg/day) or rosuvastatin (2...
January 18, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
keyword
keyword
29719
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"