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https://www.readbyqxmd.com/read/29041034/inhaled-versus-systemic-corticosteroids-for-preventing-bronchopulmonary-dysplasia-in-ventilated-very-low-birth-weight-preterm-neonates
#1
REVIEW
Sachin S Shah, Arne Ohlsson, Henry L Halliday, Vibhuti S Shah
BACKGROUND: Bronchopulmonary dysplasia (BPD) remains an important cause of mortality and morbidity in preterm infants and inflammation plays a significant role in its pathogenesis. The use of inhaled corticosteroids may modulate the inflammatory process without concomitant high systemic steroid concentrations and less risk of adverse effects. This is an update of a review published in 2012 (Shah 2012). We recently updated the related review on "Inhaled versus systemic corticosteroids for treating bronchopulmonary dysplasia in ventilated very low birth weight preterm neonates"...
October 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29040977/gene-microarray-integrated-with-high-throughput-proteomics-for-the-discovery-of-transthyretin-in-rhabdomyolysis-induced-acute-kidney-injury
#2
Ou Li, Xiaodong Geng, Qian Ma, Weiwei Wang, Ran Liu, Zhong Yin, Siyang Wang, Guangyan Cai, Xiangmei Chen, Quan Hong
BACKGROUND/AIMS: Rhabdomyolysis, one of the leading causes of acute kidney injury (AKI), develops after trauma, drug toxicity, infections, burns, and physical exertion. The aim of this study was to investigate differences in gene and protein expression to elucidate the pathogenesis of rhabdomyolysis (RM)-induced AKI. METHODS: In this study, we used glycerol induced renal injury as a model of RM-induced AKI. Affymetrix U133 plus 2.0 microarrays were used to perform gene microarray analysis...
October 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29040968/neutrophils-kill-reactive-oxygen-species-resistant-pseudomonas-aeruginosa-by-sphingosine
#3
Katrin Anne Becker, Xiang Li, Aaron Seitz, Joerg Steinmann, Anne Koch, Edward Schuchman, Markus Kamler, Michael J Edwards, Charles C Caldwell, Erich Gulbins
BACKGROUND/AIMS: Cystic fibrosis (CF) is dominated by chronic inflammation and infection of the lung resulting in lung destruction and early death of patients. The lungs of CF patients are characterized by a massive accumulation of neutrophils. It requires definition why these massive numbers of neutrophils fail to eliminate typical CF pathogens like Staphylococcus aureus and Pseudomonas aeruginosa (P. aeruginosa) in CF lungs. METHODS: We determined ceramide, sphingosine and reactive oxygen species (ROS) in neutrophils from wildtype and CF mice and determined the effect of sphingosine and ROS alone or in combination on killing of different P...
October 17, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29040960/a-novel-s-sulfhydrated-human-serum-albumin-preparation-suppresses-melanin-synthesis
#4
Mayumi Ikeda, Yu Ishima, Ryo Kinoshita, Victor T G Chuang, Nanami Tasaka, Nana Matsuo, Hiroshi Watanabe, Taro Shimizu, Tatsuhiro Ishida, Masaki Otagiri, Toru Maruyama
Products of ultraviolet (UV) irradiation such as reactive oxygen species (ROS) and nitric oxide (NO) stimulate melanin synthesis. Reactive sulfur species (RSS) have been shown to have strong ROS and NO scavenging effects. However, the instability and low retention of RSS limit their use as inhibitors of melanin synthesis. The free thiol at Cys34 on human serum albumin (HSA) is highly stable, has a long retention and possess a high reactivity for RSS. We report herein on the development of an HSA based RSS delivery system...
October 11, 2017: Redox Biology
https://www.readbyqxmd.com/read/29040939/a-biomimetic-theranostic-o2-meter-for-cancer-targeted-photodynamic-therapy-and-phosphorescence-imaging
#5
Shi-Ying Li, Bo-Ru Xie, Hong Cheng, Chu-Xin Li, Ming-Kang Zhang, Wen-Xiu Qiu, Wen-Long Liu, Xiao-Shuang Wang, Xian-Zheng Zhang
In this report, a biomimetic theranostic oxygen (O2)-meter (cancer cell membrane@Pt(II) porphyrinic-metal organic framework, designated as mPPt) was constructed for cancer targeted and phosphorescence image-guided photodynamic therapy (PDT). mPPt presents high photosensitizers (PSs) loading and evitable self-quenching behaviors for favorable biological O2 sensing and PDT. Besides, endowed by the surface functionalization of cancer cell membrane, the homotypic targeting and immune escape abilities of mPPt could dramatically enhance its cancer targeting ability...
October 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/29040883/veno-arterial-extracorporeal-membrane-oxygenation-va-ecmo-for-emergency-cardiac-support
#6
Terri Sun, Andrew Guy, Amandeep Sidhu, Gordon Finlayson, Brian Grunau, Lillian Ding, Saida Harle, Leith Dewar, Richard Cook, Hussein D Kanji
PURPOSE: Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) may provide benefit to patients in refractory cardiac arrest and cardiogenic shock. We aim to summarize our center's 6-year experience with resuscitative VA-ECMO. MATERIALS AND METHODS: A retrospective medical record review (April 2009 to 2015) was performed on consecutive non-cardiotomy patients who were managed with VA-ECMO due to refractory in- or out-of-hospital cardiac (IHCA/OHCA) arrest (E-CPR) or refractory cardiogenic shock (E-CS) with or without preceding cardiac arrest...
October 12, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29040882/separation-of-weighable-amounts-of-10-be-from-proton-irradiated-graphite
#7
S Heinitz, D Kiselev, N Kivel, D Schumann
Large amounts of (10)Be are produced at the PSI muon production facility by high-energy proton spallation in polycrystalline graphite. For the extraction of (10)Be out of large amounts of carbon, pyrolysis followed by chemical purification has been performed. Approx. 270g of graphite from Target E92, which had received a total proton charge of 29 Ah between 2002 and 2005, have been burned at 1000°C in a stream of oxygen. The volatile radioactive oxidation product (3)H2O was trapped in 3 water bubblers connected in series...
October 6, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29040862/fast-microwave-assisted-ex-catalytic-co-pyrolysis-of-bamboo-and-polypropylene-for-bio-oil-production
#8
Yunfeng Zhao, Yunpu Wang, Dengle Duan, Roger Ruan, Liangliang Fan, Yue Zhou, Leilei Dai, Jiaqian Lv, Yuhuan Liu
The ex-catalytic co-pyrolysis of bamboo and polypropylene (PP) with HZSM-5 was investigated with microwave assistance. The influences of catalytic temperature, feedstock/catalyst ratio, and bamboo/PP ratio on the product yields and chemical components of bio-oil from the co-pyrolysis were studied. When the catalytic temperature, feedstock/catalyst ratio, and bamboo/PP ratio were 250 °C, 1:2, and 2:1, respectively, the bio-oil yield reached its maximum value at 61.62 wt%. The oxygenate proportion compounds decreased with increasing catalyst content...
September 28, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29040860/organics-removal-nitrogen-removal-and-n2o-emission-in-subsurface-wastewater-infiltration-systems-amended-with-without-biochar-and-sludge
#9
Yafei Sun, Shiyue Qi, Fanping Zheng, Linli Huang, Jing Pan, Yingying Jiang, Wanyuan Hou, Lu Xiao
Organics removal, nitrogen removal, N2O emission and nitrogen removal functional gene abundances in four subsurface wastewater infiltration systems (SWISs), named SWIS A (no intermittent aeration without biochar and sludge), SWIS B (no intermittent aeration with biochar and sludge), SWIS C (intermittent aeration without biochar and sludge), SWIS D (intermittent aeration with biochar and sludge) were investigated. Intermittent aeration enhanced chemical oxygen demand (COD), ammonia nitrogen (NH4(+)-N), total nitrogen (TN) removal and the abundances of nitrogen removal functional genes (amoA, nxrA, napA, narG, nirS, nirK, qnorB and nosZ) compared to non-aerated SWISs...
October 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29040858/pyrolysis-of-oil-palm-mesocarp-fiber-catalyzed-with-steel-slag-derived-zeolite-for-bio-oil-production
#10
G Kabir, A T Mohd Din, B H Hameed
The pyrolysis of oil palm mesocarp fiber (OPMF) was catalyzed with a steel slag-derived zeolite (FAU-SL) in a slow-heating fixed-bed reactor at 450 °C, 550 °C, and 600 °C. The catalytic pyrolysis of OPMF produced a maximum yield of 47 wt% bio-oil at 550 °C, and the crude pyrolysis vapor (CPV) of this process yielded crude pyrolysis oil with broad distribution of bulky oxygenated organic compounds. The bio-oil composition produced at 550 °C contained mainly light and stable acid-rich carbonyls at a relative abundance of 48...
September 28, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29040843/characterization-of-eps-compositions-and-microbial-community-in-an-anammox-sbbr-system-treating-landfill-leachate
#11
Lei Miao, Qiong Zhang, Shuying Wang, Baikun Li, Zhong Wang, Sujian Zhang, Man Zhang, Yongzhen Peng
The biofilm system is beneficial for Anammox process designed to treat landfill leachate. In this study, the composition of extracellular polymeric substances (EPS) and the microbial community in an Anammox biofilm system were analyzed to determine the functions driving the biofilm's ability to treat landfill leachate. The results demonstrated that increasing influent carbon oxygen demand (COD) could stimulate EPS production. EPS helped enrich Anammox bacteria and supplied them with nutrients and enzymes, facilitating effective nitrogen removal (approximately 95%)...
September 23, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29040815/the-role-of-folic-acid-and-selenium-against-oxidative-ethanol-damage-in-early-life-programming-a-review
#12
Mª Luisa Ojeda Murillo, Fatima Nogales Bueno, Mª Luisa Murillo Taravillo, Olimpia Carreras Sánchez
Several disorders in children, called Fetal Alcohol Spectrum Disorders (FASD), occur as result of alcohol consumption during pregnancy and lactation. They appear, at least in part, to be related to the oxidative stress that this drug generates. Ethanol metabolism generates reactive oxygen species and causes a depletion of the antioxidant molecule glutathione (GSH) leading to oxidative stress and lipid and protein damage which are related to growth retardation and neurotoxicity, increasing the incidence of FASD...
October 17, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29040801/molecular-level-insight-into-the-interaction-of-phospholipid-bilayers-with-cellulose
#13
Andrei Yu Kostritskii, Dmitry Alekseevich Tolmachev, Natalia Viacheslavovna Lukasheva, Andrey A Gurtovenko
A molecular-level insight into the interactions of phospholipid molecules with cellulose is crucial for the development of novel cellulose-based materials for wound dressing. Here we employ the state-of-the-art computer simulations to unlock for a first time the molecular mechanisms behind such interactions. To this end, we performed a series of atomic-scale molecular dynamics simulations of phospholipid bilayers on a crystalline cellulose support at various hydration levels of the bilayer leaflets next to the cellulose surface...
October 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29040664/coumestrol-induces-mitochondrial-dysfunction-by-stimulating-ros-production-and-calcium-ion-influx-into-mitochondria-in-human-placental-choriocarcinoma-cells
#14
Whasun Lim, Changwon Yang, Muhah Jeong, Fuller W Bazer, Gwonhwa Song
STUDY QUESTION: Does coumestrol inhibit proliferation of human placental choriocarcinoma cells? SUMMARY ANSWER: Coumestrol promotes cell death in the choriocarcinoma cells by regulating ERK1/2 MAPK and JNK MAPK signaling pathways and through disruption of Ca2+ and ROS homeostasis. WHAT IS KNOWN ALREADY: A number of patients who suffer from choriocarcinomas fail to survive due to delayed diagnosis or a recurrent tumor and resistance to traditional chemotherapy using platinum-based agents and methotrexate...
October 11, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29040572/biallelic-mutations-in-the-ferredoxin-reductase-gene-cause-novel-mitochondriopathy-with-optic-atrophy
#15
Yanyan Peng, Deepali N Shinde, Alex C Valencia, Jun-Song Mo, Jill Rosenfeld, Megan Truitt Cho, Adam Chamberlin, Zhuo Li, Jie Liu, Baoheng Gui, Rachel Brockhage, Alice Basinger, Brenda Alvarez-Leon, Peter Heydemann, Pilar L Magoulas, Andrea M Lewis, Fernando Scaglia, Solange Gril, Shuk Ching Chong, Matthew Bower, Kristin G Monaghan, Rebecca Willaert, Maria-Renee Plona, Rich Dineen, Francisca Milan, George Hoganson, Zoe Powis, Katherine L Helbig, Jennifer Keller-Ramey, Belinda Harris, Laura C Anderson, Torrian Green, Stacey J Sukoff Rizzo, Julie Kaylor, Jiani Chen, Min-Xin Guan, Elizabeth Sellars, Steven P Sparagana, James B Gibson, Laura G Reinholdt, Sha Tang, Taosheng Huang
Iron-sulfur (Fe-S) clusters are ubiquitous cofactors essential to various cellular processes, including mitochondrial respiration, DNA repair, and iron homeostasis. A steadily increasing number of disorders are being associated with disrupted biogenesis of Fe-S clusters. Here, we conducted whole-exome sequencing of patients with optic atrophy and other neurological signs of mitochondriopathy and identified 17 individuals from 13 unrelated families with recessive mutations in FDXR, encoding the mitochondrial membrane-associated flavoprotein ferrodoxin reductase required for electron transport from NADPH to cytochrome P450...
October 5, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29040474/co-occurrence-of-genes-for-aerobic-and-anaerobic-biodegradation-of-dichloroethane-in-organochlorine-contaminated-groundwater
#16
Jacob E Munro, Önder Kimyon, Deborah J Rich, Joanna Koenig, Sihui Tang, Adrian Low, Matthew Lee, Mike Manefield, Nicholas V Coleman
1,2-dichloroethane (DCA) is a problematic groundwater pollutant. Factors influencing the distribution and activities of DCA-degrading bacteria are not well-understood, which has hampered their application for bioremediation. Here, we used quantitative PCR (qPCR) to investigate the distribution of putative DCA-dehalogenating bacteria at a DCA-impacted site in Sydney (Australia). The dehalogenase genes dhlA, tceA and bvcA were detected in all groundwater samples (n = 15), while vcrA was found in 11/15 samples...
October 12, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29040462/both-cardiomyocyte-and-endothelial-cell-nox4-mediate-protection-against-hemodynamic-overload-induced-remodeling
#17
Min Zhang, Heloise Mongue-Din, Daniel Martin, Norman Catibog, Ioannis Smyrnias, Xiaohong Zhang, Bin Yu, Minshu Wang, Ralf P Brandes, Katrin Schröder, Ajay M Shah
Aims: NADPH oxidase-4 (Nox4) is an important reactive oxygen species (ROS) source that is upregulated in the hemodynamically overloaded heart. Our previous studies using global Nox4 knockout (Nox4KO) mice demonstrated a protective role of Nox4 during chronic abdominal aortic banding, involving a paracrine enhancement of myocardial capillary density. However, other authors who studied cardiac-specific Nox4KO mice reported detrimental effects of Nox4 in response to transverse aortic constriction (TAC)...
October 13, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29040392/%C3%AE-cypermethrin-and-its-metabolite-3-phenoxybenzoic-acid-exhibit-immunotoxicity-in-murine-macrophages
#18
Xia Wang, Bingnan He, Baida Kong, Lai Wei, Rong Wang, Chenqian Zhou, Yiyan Shao, Jiajia Lin, Yuanxiang Jin, Zhengwei Fu
β-Cypermethrin (β-CYP), one of most important pyrethroids, is widely used to control insects, and has been detected in organisms, including human. Pyrethroids have been shown to pose neurotoxicity, hepatotoxicity, endocrine disruption and reproductive risks in mammals. However, research in immunotoxicity of pyrethroids, especially their metabolites, is limited. A common metabolite of pyrethroids is 3-phenoxybenzoic acid (3-PBA) in mammals. Thus, in this study, we evaluated the immunotoxicity of β-CYP and 3-PBA in mouse macrophages, RAW 264...
October 11, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29040016/centella-asiatica-fraction-3-suppresses-the-nuclear-factor-erythroid-2-related-factor-2-anti-oxidant-pathway-and-enhances-reactive-oxygen-species-mediated-cell-death-in-cancerous-lung-a549-cells
#19
Dhaneshree Bestinee Naidoo, Alisa Phulukdaree, Krishnan Anand, Vikash Sewram, Anil Amichund Chuturgoon
Centella asiatica is a tropical medicinal plant that is commonly used in traditional medicine. Medicinal properties of C. asiatica include anti-oxidant, anti-inflammatory, and anti-cancer activity. We investigated the anti-oxidant and anti-proliferative/cytotoxic effects of a semi-purified fraction of C. asiatica ethanolic leaf extract (C3) in cancerous lung A549 cells. C3 was obtained by silica column fractionation and identified by using thin-layer chromatography and gas chromatography mass spectrometry. Cytotoxicity of C3 in A549 cells was evaluated (cell viability assay-WST-1; 24 h; [0...
October 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29039953/phosphoryl-transfer-reaction-in-rna-is-the-substrate-assisted-catalysis-a-possible-mechanism-in-certain-solvents
#20
Carles Acosta-Silva, Joan Bertran, Vicenç Branchadell, Antoni Oliva
A proton shuttle mechanism for the phosphoryl transfer reaction in RNA, in which a proton is transferred from the nucleophile to the leaving group through a non-bridged oxygen atom of the phosphate has been explored using the MO6-2X density functional method and the solvent continuum model (SMD). This reaction is the initial step of the RNA hydrolysis. We have used different solvents characterized by their dielectric constant and, for each of them, we have studied the nuclear and electronic relaxation, produced by the solvent reaction field, for the stationary points...
October 17, 2017: Journal of Physical Chemistry. A
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