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https://www.readbyqxmd.com/read/28535611/sea-buckthorn-hippophae-rhamnoides-l-leaf-extracts-protect-neuronal-pc-12-cells-from-oxidative-stress
#1
Chi Heung Cho, Ho Lim Jang, Migi Lee, Hee Kang, Ho Jjn Heo, Dae-Ok Kim
The present study was carried out to investigate the antioxidative and neuroprotective effects of sea buckthorn (Hippophae rhamnoides L.) leaves (SBL) harvested at different times. Reversed-phase high-performance liquid chromatography analysis revealed five major phenolic compounds: ellagic acid, gallic acid, isorhamnetin, kaempferol, and quercetin. SBL harvested in August had the highest total phenolic and flavonoid contents and antioxidant capacity. Treatment of neuronal PC-12 cells with the ethyl acetate fraction of SBL harvested in August in increased their viability and membrane integrity and reduced intracellular oxidative stress in a dose-dependent manner...
May 24, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28535610/nitric-oxide-inhibition-and-procollagen-type-i-peptide-synthesis-of-a-phenolic-amide-identified-from-the-stem-of-lycium-chinense-miller
#2
Chan Saem Gil, Moon-Sik Chang, Seok Hyun Eom
The bioactivities of boxthron fruits, a source of oriental medicine, are known, while phytochemical studies of the boxthorn stem are rare. In this study, the stem extract of boxthorn (Lycium chinense Miller) and its sub-fractions were evaluated for their effects on nitric oxide (NO) inhibition and procollagen type I peptide (PIP) synthesis. A phenolic amide isolated from the stem extract was also assayed for these effects. The compound, N-trans-feruloyltyramine, was identified by (1)H, (13)C, and 2D-nuclear magnetic resonance analysis...
May 24, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28535603/realizing-full-coverage-of-stable-perovskite-film-by-modified-anti-solvent-process
#3
Long Ji, Ting Zhang, Yafei Wang, Peng Zhang, Detao Liu, Zhi Chen, Shibin Li
Lead-free solution-processed solid-state photovoltaic devices based on formamidinium tin triiodide (FASnI3) and cesium tin triiodide (CsSnI3) perovskite semiconductor as the light harvester are reported. In this letter, we used solvent engineering and anti-solvent dripping method to fabricate perovskite films. SnCl2 was used as an inhibitor of Sn(4+) in FASnI3 precursor solution. We obtained the best films under the function of toluene or chlorobenzene in anti-solvent dripping method and monitored the oxidation of FASnI3 films in air...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28535594/industrial-pm2-5-cause-pulmonary-adverse-effect-through-rhoa-rock-pathway
#4
Junyan Yan, Chia-Hsiang Lai, Shih-Chun Candice Lung, Chongjun Chen, Wen-Cheng Wang, Pin-I Huang, Chia-Hua Lin
According to the Chinese Ministry of Health, industrial pollution-induced health impacts have been the leading cause of death in China. While industrial fine particulate matter (PM2.5) is associated with adverse health effects, the major action mechanisms of different compositions of PM2.5 are currently unclear. In this study, we treated normal human lung epithelial BEAS-2B cells with industrial organic and water-soluble PM2.5 extracts under daily alveolar deposition dose to elucidate the molecular mechanisms underlying adverse pulmonary effects induced by PM2...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535589/water-soluble-organic-aerosols-in-indo-gangetic-plain-igp-insights-from-aerosol-mass-spectrometry
#5
Abhishek Chakraborty, Pradhi Rajeev, Prashant Rajput, Tarun Gupta
Filter samples collected during winter of 2015-16 from two polluted urban locations (Allahabad and Kanpur) residing within Indo-Gangetic plain (IGP) showed high levels of water-soluble organic aerosols (WSOA). Total organic aerosols (OA) in submicron fraction, measured at Kanpur in real time via Aerosol Mass Spectrometer also showed substantially high concentration levels. WSOA to OA contribution in Kanpur was found to be very high (around 55%) indicating significant contributions from secondary OA (SOA). On average, WSOA oxidation ratio (O/C) was found to be higher (15-20%) in Kanpur than at Allahabad...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535537/triggering-of-suicidal-erythrocyte-death-by-exemestane
#6
Abdulla Al Mamun Bhuyan, Rosi Bissinger, Hang Cao, Florian Lang
BACKGROUND/AIMS: The steroidal aromatase inactivator exemestane blocks estrogen biosynthesis and is thus employed for the prevention and treatment of breast cancer. Exemestane is in part effective by stimulation of suicidal cell death or apoptosis. Side effects of exemestane treatment include anemia. At least in theory, exemestane induced anemia could be secondary to stimulation of suicidal erythrocyte death or eryptosis, characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine translocation to the erythrocyte surface...
May 11, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28535490/moderate-ocean-warming-mitigates-but-more-extreme-warming-exacerbates-the-impacts-of-zinc-from-engineered-nanoparticles-on%C3%A2-a%C3%A2-marine-larva
#7
Benjamin Mos, Katrina L Kaposi, Andrew L Rose, Brendan Kelaher, Symon A Dworjanyn
There is growing concern about the combined effects of multiple human-induced stressors on biodiversity. In particular, there are substantial knowledge gaps about the combined effects of existing stressors (e.g. pollution) and predicted environmental stress from climate change (e.g. ocean warming). We investigated the impacts of ocean warming and engineered nanoparticles (nano-zinc oxide, nZnO) on larvae of a cosmopolitan tropical sea urchin, Tripneustes gratilla. Larval T. gratilla were exposed to all combinations of three temperatures, 25, 27 and 29 °C (current SST and near-future predicted warming of +2 and + 4 °C) and six concentrations of nZnO (0, 0...
May 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28535488/ftir-analysis-on-aging-characteristics-of-abs-pc-blend-under-uv-irradiation-in-air
#8
Jiarong Li, Fu Chen, Long Yang, Long Jiang, Yi Dan
Fourier Transform Infrared Spectroscopy (FTIR) is adopted to study the aging characteristics of poly(acrylonitrile-butadiene-styrene)/polycarbonate (ABS/PC) blend under UV-irradiation in air by analyzing the variation of the three main absorbance at about 967cm(-1), 1720cm(-1) and 3420cm(-1) associated with carbon-hydrogen bonds belonging to 1,4 butadiene, carbonyl and hydroxyl groups, respectively. Results indicate that, under UV-irradiation in air, the photo-oxidation of the blend is not a simple combination of the photo-oxidation of corresponding ABS and PC themselves and takes place predominantly at the ABS component...
April 29, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28535484/biomonitoring-of-genotoxicity-of-industrial-fertilizer-pollutants-in-aiolopus-thalassinus-orthoptera-acrididae-using-alkaline-comet-assay
#9
Eman A Abdelfattah, Maria Augustyniak, Hesham A Yousef
Phosphate fertilizer industry is considered as one of the main sources of environmental pollutants. Besides solid waste products, e.g. phosphates, sulphates, and heavy metals, also atmospheric pollutants, such as hydrofluoric acid fumes (HF), sulphur dioxide (SO2), nitrogen oxides (NO2), and particulate matter with diameter up to 10 μm (PM10) can be dangerous. Genotoxic effect of these pollutants was monitored by assessing the DNA damage using alkaline comet assay on cells from brain, thoracic muscles and gut of Aiolopus thalassinus collected at three sites (A-C) located at 1, 3, and 6 km away from Abu-Zaabal Company for Fertilizers and Chemical Industries...
May 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28535481/graphene-oxide-enzyme-hybrid-nanoflowers-for-efficient-water-soluble-dye-removal
#10
Hui Li, Jingwei Hou, Linlin Duan, Chao Ji, Yatao Zhang, Vicki Chen
High efficient enzyme immobilization on carbon based conductive supports could provide wide applications in energy and environmental science. Here, we synthesized a 3D flower-like structured self-assembly hybrid nanocomposite with copper phosphate, laccase, graphite oxide (GO) and carbon nanotubes (CNTs) via a facile one-pot strategy under mild conditions. The prepared nanocomposite exhibited very high enzyme loading and improved laccase activity. During the formation of the nanocomposite, the copper phosphate-laccase petals were interwined by CNTs, and GO nanosheets were further coated on the petal surface...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28535480/ozonation-of-the-oxybenzone-octinoxate-and-octocrylene-uv-filters-reaction-kinetics-absorbance-characteristics-and-transformation-products
#11
Zachary R Hopkins, Sebastian Snowberger, Lee Blaney
UV-filters (UVFs) are active ingredients in personal care products that protect skin from exposure to UV light. Environmentally-relevant concentrations of UVFs have recently been linked to toxicity in aquatic organisms, necessitating research into improved UVF removal in water/wastewater treatment. Here, we investigated ozonation of the three most commonly employed UVFs: octinoxate (OMC), octocrylene (OC), and oxybenzone (OXY). Specific second-order rate constants for UVF reaction with ozone were identified as follows: OMC, 5...
May 10, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28535479/adsorption-of-vocs-onto-engineered-carbon-materials-a-review
#12
REVIEW
Xueyang Zhang, Bin Gao, Anne Elise Creamer, Chengcheng Cao, Yuncong Li
Volatile organic compounds (VOCs) severely threaten human health and the ecological environment because most of them are toxic, mutagenic, and carcinogenic. The persistent increase of VOCs together with the stringent regulations make the reduction of VOC emissions more imperative. Up to now, numerous VOC treatment technologies have emerged, such as incineration, condensation, biological degradation, absorption, adsorption, and catalysis oxidation et al. Among them, the adsorption technology has been recognized as an efficient and economical control strategy because it has the potential to recover and reuse both adsorbent and adsorbate...
May 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28535473/length-effect-of-methoxy-poly-ethylene-oxide-b-poly-%C3%AE%C2%B5-caprolactone-g-poly-methacrylic-acid-copolymers-on-cisplatin-delivery
#13
Hsuan-Ying Chen, Yu-Lun Lo, Pei-Ling Wu, Pei-Chi Lo, Li-Fang Wang
Novel comb-shaped amphiphilic copolymers based on methoxy poly(ethylene glycol)-b-[poly(ε-caprolactone)-g-poly(methacrylic acid)] (MPCL-g-pMAA), were synthesized via ring opening polymerization (ROP) and atom transfer radical polymerization (ATRP) for drug delivery systems. MPCL-g-pMAAs with various MAA repeating units self-assemble into a core-shell structure in an aqueous solution. Critical aggregation concentrations range within 5.6×10(-3)-7.0×10(-2)mg/mL in double deionized water and 8.9×10(-3)-7.0×10(-2)mg/mL in phosphate buffered saline of pH 7...
May 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28535471/graphene-oxide-supported-carbon-nanofiber-like-network-derived-from-polyaniline-a-novel-composite-for-enhanced-glucose-oxidase-bioelectrode-performance
#14
Zepeng Kang, Kailong Jiao, Xinping Xu, Ruiyun Peng, Shuqiang Jiao, Zongqian Hu
A three-dimensional architecture of PANI@GO hybrid was synthesized via in-situ polymerization of aniline monomers on the surface of graphene oxide (GO) and carbonized at 1600°C. The SEM images showed that surfaces of planar GO were covered by a compact nanofiber-like polyaniline (PANI) layer which presented an interconnected network. Nanofiber-like PANI on the GO surface was mostly preserved and became the carbon nanofibers (CNFs) after carbonization. The TEM images showed that the carbonized PANI grew seamlessly on the GO surface and served as conductive "network" between interlayers of GO...
May 12, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28535425/prenatal-ambient-air-pollution-exposure-infant-growth-and-placental-mitochondrial-dna-content-in-the-inma-birth-cohort
#15
Diana B P Clemente, Maribel Casas, Bram G Janssen, Aitana Lertxundi, Loreto Santa-Marina, Carmen Iñiguez, Sabrina Llop, Jordi Sunyer, Mònica Guxens, Tim S Nawrot, Martine Vrijheid
BACKGROUND: The association between prenatal air pollution exposure and postnatal growth has hardly been explored. Mitochondrial DNA (mtDNA), as a marker of oxidative stress, and growth at birth can play an intermediate role in this association. OBJECTIVE: In a subset of the Spanish birth cohort INMA we assessed first whether prenatal nitrogen dioxide (NO2) exposure is associated with infant growth. Secondly, we evaluated whether growth at birth (length and weight) could play a mediating role in this association...
May 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28535338/a-flexible-lithium-ion-fiber-battery-by-regularly-stacking-two-dimensional-titanium-oxide-nanosheets-hybridized-with-reduced-graphene-oxide
#16
Tatsumasa Hoshide, Yuanchuan Zheng, Junyu Hou, Zhiqiang Wang, Qingwen Li, Zhigang Zhao, Renzhi Ma, Takayoshi Sasaki, Fengxia Geng
Increasing interest has recently been devoted to developing small, rapid, and portable electronic devices; thus, it is becoming critically important to provide matching light and flexible energy-storage systems to power them. To this end, compared with the inevitable drawbacks of being bulky, heavy, and rigid for traditional planar sandwiched structures, linear fiber-shaped lithium-ion batteries (LIB) have become increasingly important owing to their combined superiorities of miniaturization, adaptability, and weavability, the progress of which is heavily dependent on developing new fiber-shaped electrodes...
May 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28535334/maximizing-the-photocatalytic-activity-of-metal-organic-frameworks-with-aminated-functionalized-linkers-sub-stoichiometric-effects-in-mil-125-nh2
#17
Matthew Chambers, Xia Wang, Laura Ellezam, Ovidiu Ersen, Marc Fontecave, Clément Sanchez, Laurence Rozes, Caroline Mellot-Draznieks
Despite the promise of utilizing metal-organic frameworks (MOFs) as highly tunable photocatalytic materials, systematic studies that interrogate the relationship between their catalytic performances and the amount of function-alized linkers are lacking. Aminated linkers are known to enhance the absorption of light and afford photocatalysis with MOFs under visible-light irradiation. However, the manner in which the photocatalytic performances are impacted by the amount of such linkers is poorly understood. Here, we assess the photocatalytic activity of MIL-125, a TiO2/1,4-benzenedicarboxylate (bdc) MOF for the oxidation of benzyl alcohol to benzaldehyde when increasing amounts of bdc-NH2 linkers (0%, 20%, 46%, 70% and 100%) are incorporated in the framework...
May 23, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28535253/endothelial-glycocalyx-the-battleground-for-complications-of-sepsis-and-kidney-injury
#18
Jong Wook Song, Joseph Zullo, Mark Lipphardt, Matthew Dragovich, Frank X Zhang, Bingmei Fu, Michael S Goligorsky
After briefly discussing endothelial glycocalyx and its role in vascular physiology and renal disease, this overview focuses on its degradation very early in the course of microbial sepsis. We describe our recently proposed mechanism for glycocalyx degradation induced by exocytosis of lysosome-related organelles and release of their cargo. Notably, an intermediate in nitric oxide synthesis, NG-hydroxy-l-arginine, shows efficacy in curtailing exocytosis of these organelles and improvement in animal survival...
May 23, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28535182/characterization-of-liver-injury-oval-cell-proliferation-and-cholangiocarcinogenesis-in-glutathione-s-transferase-a3-knockout-mice
#19
Dana R Crawford, Zoran Ilic, Ian Guest, Ginger L Milne, John D Hayes, Stewart Sell
We recently generated glutathione S-transferase (GST) A3 knockout (KO) mice as a novel model to study the risk factors for liver cancer. GSTA3 KO mice are sensitive to the acute cytotoxic and genotoxic effects of aflatoxin B1 (AFB1), confirming the crucial role of GSTA3 in resistance to AFB1. We now report histopathological changes, tumor formation, biochemical changes and gender response following AFB1 treatment as well as the contribution of oxidative stress. Using a protocol of weekly 0.5 mg AFB1/kg administration, we observed extensive oval (liver stem) cell (OC) proliferation within 1-3 weeks followed by microvesicular lipidosis, megahepatocytes, nuclear inclusions, cholangiomas, and small nodules...
May 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28535124/serum-creatinine-and-cystatin-c-provide-conflicting-evidence-of-acute-kidney-injury-following-acute-ingestion-of-potassium-permanganate-and-oxalic-acid
#20
Thilini Madushanka Wijerathna, Indika Bandara Gawarammana, Dhammika Menike Dissanayaka, Chathura Palanagasinghe, Fathima Shihana, Gihani Dassanayaka, Seyed Shahmy, Zoltan Huba Endre, Fahim Mohamed, Nicholas Alan Buckley
AIM: Acute kidney injury (AKI) is common following deliberate self-poisoning with a combination washing powder containing oxalic acid (H2C2O4) and potassium permanganate (KMnO4). Early and rapid increases in serum creatinine (sCr) follow severe poisoning. We investigated the relationship of these increases with direct nephrotoxicity in an ongoing multicenter prospective cohort study in Sri Lanka exploring AKI following poisoning. METHODS: Multiple measures of change in kidney function were evaluated in 48 consenting patients who had serial sCr and serum cystatin C (sCysC) data available...
May 23, 2017: Clinical Toxicology
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