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https://www.readbyqxmd.com/read/27926976/are-cytokines-useful-biomarkers-to-determine-disease-severity-in-neonates-with-congenital-diaphragmatic-hernia
#1
Thomas Schaible, Janine Reineke, Ludwig Gortner, Dominik Monz, Regine Schaffelder, Erol Tutdibi
Background This study investigates plasma cytokine levels in neonates with the more common left-sided congenital diaphragmatic hernia (CDH) and correlates them with severity of disease indicated by position of the liver. An intrathoracic part of liver is associated with higher need for extracorporeal membrane oxygenation (ECMO) and higher risk for chronic lung disease (CLD). Methods A total of 28 newborns with CDH were subdivided by their liver position in partially intrathoracic (n = 16) and only abdominal (n = 12) position...
December 7, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27925576/comparison-of-oxygen-transfer-parameters-and-oxygen-demands-in-bioreactors-operated-at-low-and-high-dissolved-oxygen-levels
#2
Richard O Mines, Matthew C Callier, Benjamin J Drabek, André J Butler
The proper design of aeration systems for bioreactors is critical since it can represent up to 50% of the operational and capital cost at water reclamation facilities. Transferring the actual amount of oxygen needed to meet the oxygen demand of the wastewater requires α- and β-factors, which are used for calculating the actual oxygen transfer rate (AOTR) under process conditions based on the standard oxygen transfer rate (SOTR). The SOTR is measured in tap water at 20°C, 1 atmospheric pressure, and 0 mg L(-1) of dissolved oxygen (DO)...
December 7, 2016: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/27924868/species-specific-control-of-external-superoxide-levels-by-the-coral-holobiont-during-a-natural-bleaching-event
#3
Julia M Diaz, Colleen M Hansel, Amy Apprill, Caterina Brighi, Tong Zhang, Laura Weber, Sean McNally, Liping Xun
The reactive oxygen species superoxide (O2(·-)) is both beneficial and detrimental to life. Within corals, superoxide may contribute to pathogen resistance but also bleaching, the loss of essential algal symbionts. Yet, the role of superoxide in coral health and physiology is not completely understood owing to a lack of direct in situ observations. By conducting field measurements of superoxide produced by corals during a bleaching event, we show substantial species-specific variation in external superoxide levels, which reflect the balance of production and degradation processes...
December 7, 2016: Nature Communications
https://www.readbyqxmd.com/read/27924812/interstitial-oxygen-as-a-source-of-p-type-conductivity-in-hexagonal-manganites
#4
Sandra H Skjærvø, Espen T Wefring, Silje K Nesdal, Nikolai H Gaukås, Gerhard H Olsen, Julia Glaum, Thomas Tybell, Sverre M Selbach
Hexagonal manganites, h-RMnO3 (R=Sc, Y, Ho-Lu), have been intensively studied for their multiferroic properties, magnetoelectric coupling, topological defects and electrically conducting domain walls. Although point defects strongly affect the conductivity of transition metal oxides, the defect chemistry of h-RMnO3 has received little attention. We use a combination of experiments and first principles electronic structure calculations to elucidate the effect of interstitial oxygen anions, Oi, on the electrical and structural properties of h-YMnO3...
December 7, 2016: Nature Communications
https://www.readbyqxmd.com/read/27923872/dopamine-directly-increases-mitochondrial-mass-and-thermogenesis-in-brown-adipocytes
#5
Rose Kohlie, Nina Perwitz, Julia Resch, Sebastian Michael Schmid, Hendrik Lehnert, Johannes Klein, Karl Alexander Iwen
Brown adipose tissue (BAT) is key to energy homeostasis. By virtue of its thermogenic potential it may dissipate excessive energy, regulate body weight, and increase insulin sensitivity. Catecholamines are critically involved in the regulation of BAT-thermogenesis, yet research has focussed on the effects of noradrenaline and adrenaline. Some evidence suggests a role of dopamine (DA) in BAT-thermogenesis but the cellular mechanisms involved have not been addressed. We employed our extensively characterised murine brown adipocyte cells...
December 6, 2016: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/27923643/anthraquinone-derivative-exerted-hormetic-effect-on-the-apoptosis-in-oxygen-glucose-deprivation-induced-pc12-cells-via-erk-and-akt-activated-nrf2-ho-1-signaling-pathway
#6
Lu Liu, Weiwei Huang, Jianhong Wang, Huiling Song, Juan Cen, Biansheng Ji
There were accumulated evidences that agents may attenuate neurological disorders through a hormetic effect. This study was designed to investigate hormetic effect of BME on the oxygen-glucose deprivation (OGD)-induced mitochondrial apoptosis in NGF-differentiated PC12 cells. The effect of BME on the intracellular reactive oxygen species (iROS) formation and pro-survival signals mediated by ERK and Akt as well as transcription factor nuclear factor-erythroid 2 p45-related factor 2 (Nrf2) pathways was also determined...
December 3, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27923579/internal-loading-of-phosphate-in-lake-erie-central-basin
#7
Adina Paytan, Kathryn Roberts, Sue Watson, Sara Peek, Pei-Chuan Chuang, Delphine Defforey, Carol Kendall
After significant reductions in external phosphorus (P) loads, and subsequent water quality improvements in the early 1980s, the water quality of Lake Erie has declined considerably over the past decade. The frequency and magnitude of harmful algal blooms (primarily in the western basin) and the extent of hypoxic bottom waters in the central basin have increased. The decline in ecosystem health, despite meeting goals for external P loads, has sparked a renewed effort to understand P cycling in the lake. We use pore-water P concentration profiles and sediment cores incubation experiments to quantify the P flux from Lake Erie central basin sediments...
December 3, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27923272/elimination-of-diazinon-insecticide-from-cucumber-surface-by-atmospheric-pressure-air-dielectric-barrier-discharge-plasma
#8
Naghme Dorraki, Vahideh Mahdavi, Hamid Ghomi, Alireza Ghasempour
The food industry is in a constant search for new technologies to improve the commercial sterilization process of agricultural commodities. Plasma treatment may offer a novel and efficient method for pesticide removal from agricultural product surfaces. To study the proposed technique of plasma food treatment, the degradation behavior of diazinon insecticide by air-dielectric barrier discharge (DBD) plasma was investigated. The authors studied the effect of different plasma powers and treatment times on pesticide concentration in liquid form and coated on the surface of cucumbers, where the diazinon residue was analyzed with mass spectroscopy gas chromatography...
December 6, 2016: Biointerphases
https://www.readbyqxmd.com/read/27923196/environmental-preconditioning-rejuvenates-adult-stem-cells-proliferation-and-chondrogenic-potential
#9
REVIEW
Ming Pei
Adult stem cells are a promising cell source for cartilage regeneration. Unfortunately, due to donor age and ex vivo expansion, stem cell senescence becomes a huge hurdle for these cells to be used clinically. Increasing evidence indicates that environmental preconditioning is a powerful approach in promoting stem cells' ability to resist a harsh environment post-engraftment, such as hypoxia and inflammation. However, few reports organize and evaluate the literature regarding the rejuvenation effect of environmental preconditioning on stem cell proliferation and chondrogenic differentiation capacity, which are important variables for stem cell based tissue regeneration...
November 25, 2016: Biomaterials
https://www.readbyqxmd.com/read/27922880/investigation-of-key-circuit-constituents-affecting-drug-sequestration-during-extracorporeal-membrane-oxygenation-treatment
#10
Jiheum Park, Dong Ah Shin, Saram Lee, Young-Jae Cho, Sanghoon Jheon, Jung Chan Lee, Hee Chan Kim
We quantified the influence of the elements of the extracorporeal oxygenation (ECMO) circuit on drug sequestration by focusing on the interactions between materials and drugs. Tubing of three different brands (Tygon/Maquet/Terumo) and oxygenators of two different brands (Maquet/Terumo) were used. Drugs included dexmedetomidine, meropenem, and heparin which were dissolved in deionized water. Tubing was cut into ~7 cm sections and allowed drug solutions enclosed inside by clamping both ends. The oxygenator housing, gas membrane, and heat exchanger were dissected into ~1 g pieces and submerged into drug solutions...
December 2, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27922686/necrox-5-prevents-breast-cancer-metastasis-by-akt-inhibition-via-reducing-intracellular-calcium-levels
#11
Jin-Hee Park, Hyoung Kyu Kim, Hana Jung, Ki Hyang Kim, Mi Seon Kang, Jun Hyuk Hong, Byeng Chul Yu, Sungjae Park, Su-Kil Seo, Il Whan Choi, Soon Ha Kim, Nari Kim, Jin Han, Sae Gwang Park
A major goal of breast cancer research is to prevent the molecular events that lead to tumour metastasis. It is well-established that both cytoplasmic and mitochondrial reactive oxygen species (ROS) play important roles in cell migration and metastasis. Accordingly, this study examined the molecular mechanisms of the anti-metastatic effects of NecroX-5, a mitochondrial ROS scavenger. NecroX-5 inhibited lung cancer metastasis by ameliorating migration in a mouse model. In human cancer cells, the inhibition of migration by NecroX-5 is cell type-dependent...
December 5, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27922551/sphingosine-1-phosphate-s1p-a-potential-biomarker-and-therapeutic-target-for-endothelial-dysfunction-and-sepsis
#12
Martin S Winkler, Axel Nierhaus, Annika Poppe, Gillis Greiwe, Markus Gräler, Guenter Daum
Sepsis is an acute life-threatening multiple organ failure caused by a dysregulated host response to infection. Endothelial dysfunction, particularly barrier disruption leading to increased vascular permeability, edema and insufficient tissue oxygenation is critical to sepsis pathogenesis. Sphingosine-1-phosphate (S1P) is a signaling lipid that regulates important pathophysiological processes including vascular endothelial cell permeability, inflammation and coagulation. It is present at high concentrations in blood and lymph and at very low concentrations in tissues due to the activity of the S1P-degrading enzyme S1P-lyase in tissue cells...
December 2, 2016: Shock
https://www.readbyqxmd.com/read/27920767/ecophysiology-and-comparative-genomics-of-nitrosomonas-mobilis-ms1-isolated-from-autotrophic-nitrifying-granules-of-wastewater-treatment-bioreactor
#13
Soe Myat Thandar, Norisuke Ushiki, Hirotsugu Fujitani, Yuji Sekiguchi, Satoshi Tsuneda
Ammonia-oxidizing bacteria (AOB), which oxidize ammonia to nitrite in the first step of nitrification, play an important role in biological wastewater treatment systems. Nitrosomonas mobilis is an important and dominant AOB in various wastewater treatment systems. However, the detailed physiological and genomic properties of N. mobilis have not been thoroughly investigated because of limited success isolating pure cultures. This study investigated the key physiological characteristics of N. mobilis Ms1, which was previously isolated into pure culture from the nitrifying granules of wastewater treatment bioreactor...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920523/pegylated-and-nanoparticle-conjugated-sulfonium-salt-photo-triggers-necrotic-cell-death
#14
Alaa A Fadhel, Xiling Yue, Ebrahim H Ghazvini Zadeh, Mykhailo V Bondar, Kevin D Belfield
Photodynamic therapy (PDT) processes involving the production of singlet oxygen face the issue of oxygen concentration dependency. Despite high oxygen delivery, a variety of properties related to metabolism and vascular morphology in cancer cells result in hypoxic environments, resulting in limited effectiveness of such therapies. An alternative oxygen-independent agent whose cell cytotoxicity can be remotely controlled by light may allow access to treatment of hypoxic tumors. Toward that end, we developed and tested both polyethylene glycol (PEG)-functionalized and hydrophilic silica nanoparticle (SiNP)-enriched photoacid generator (PAG) as a nontraditional PDT agent to effectively induce necrotic cell death in HCT-116 cells...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920337/effect-of-epigallocatechin-3-gallate-on-acrylamide-induced-oxidative-stress-and-apoptosis-in-pc12-cells
#15
Y He, D Tan, Y Mi, B Bai, D Jiang, X Zhou, S Ji
Acrylamide (ACR) is a chemical intermediate utilized in industry. ACR is also formed during heating of foods containing carbohydrates and amino acids. Therefore, humans are widely exposed to ACR, and ACR neurotoxicity in humans is a significant public health issue attracting wide attention. In this study, we investigated the potential neuroprotective effects of epigallocatechin-3-gallate (EGCG), the most abundant polyphenolic compound in green tea, in PC12 cells treated with ACR. ACR-treated PC12 cells pretreated with various concentrations of EGCG (2...
December 5, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27920296/a-sulfur-oxygenase-from-the-haloalkaliphilic-bacterium-thioalkalivibrio-paradoxus-with-atypically-low-reductase-activity
#16
Patrick Rühl, Uwe Pöll, Johannes Braun, Andreas Klingl, Arnulf Kletzin
: Sequence comparisons showed that the sulfur oxygenase reductase (SOR) of the haloalkaliphilic bacterium Thioalkalivibrio paradoxus Arh 1 (TpSOR) is branching deeply within dendrograms of these proteins (29-34% identity). A synthetic gene encoding the TpSOR expressed in E. coli resulted in a protein of 14.7±0.9 nm in diameter and an apparent molecular mass of 556 kDa. Sulfite and thiosulfate were formed from elemental sulfur in a temperature range of 10-98°C (Topt≈80°C) and a pH range of 6-11...
December 5, 2016: Journal of Bacteriology
https://www.readbyqxmd.com/read/27919736/effect-of-morin-5-sulfonic-acid-sodium-salt-on-the-expression-of-apoptosis-related-proteins-caspase-3-bax-and-bcl-2-due-to-the-mercury-induced-oxidative-stress-in-albino-rats
#17
Rantham Subramaniam Venkatesan, Abdul Majeeth Mohamed Sadiq
Many environmental contaminants have been reported to disturb the pro-oxidant or antioxidant balance of the cells by inducing oxidative stress. Oxidative stress mediated by the HgCl2 induces DNA, protein and lipid oxidation resulted in necrosis or apoptosis, or both. Currently flavonoids are being emerging topic and reported to have antiviral, anti-inflammatory, anti- tumor and antioxidant activities. Morin is one of the flavonoid protects the cells from oxygen free radical damage and scavenges the free radicals and metals and also heals the injured cells commercially...
December 2, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27919715/perioperative-brain-natriuretic-peptide-in-pediatric-cardiac-surgery-patients-its-association-with-postoperative-outcomes
#18
Tomoyuki Kanazawa, Moritoki Egi, Yuichiro Toda, Kazuyoshi Shimizu, Kentaro Sugimoto, Tatsuo Iwasaki, Hiroshi Morimatsu
OBJECTIVES: The aim of this study was to investigate the relationship between perioperative brain natriuretic peptide levels and the incidence of postoperative serious adverse events (SAEs) in pediatric cardiac patients. DESIGN: A prospective observational study. SETTING: A single-institution university hospital. PARTICIPANTS: Children under 15 years old who underwent cardiac surgery that required cardiopulmonary bypass from December 21, 2012 to February 26, 2014...
September 13, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27918999/effect-of-silver-nanoparticles-on-the-metabolic-rate-hematological-response-and-survival-of-juvenile-white-shrimp-litopenaeus-vannamei
#19
Karla Juarez-Moreno, Claudio Humberto Mejía-Ruiz, Fernando Díaz, Horacio Reyna-Verdugo, Ana Denisse Re, Edgar F Vazquez-Felix, Edna Sánchez-Castrejón, Josué D Mota-Morales, Alexey Pestryakov, Nina Bogdanchikova
White spot syndrome virus (WSSV) is highly lethal and contagious in shrimps; its outbreaks causes an economic crisis for aquaculture. Several attempts have been made to treat this disease; however, to date, there is no effective cure. Because of their antimicrobial activities, silver nanoparticles (AgNPs) are the most studied nanomaterial. Although the antiviral properties of AgNPs have been studied, their antiviral effect against viral infection in aquaculture has not been reported. The AgNPs tested herein are coated with polyvinylpyrrolidone (PVP) and possess multiple international certifications for their use in veterinary and human applications...
December 2, 2016: Chemosphere
https://www.readbyqxmd.com/read/27918985/supporting-of-coupled-silver-halides-onto-clinoptilolite-nanoparticles-as-simple-method-for-increasing-their-photocatalytic-activity-in-heterogeneous-photodegradation-of-mixture-of-4-methoxy-aniline-and-4-chloro-3-nitro-aniline
#20
Sajad Jafari, Alireza Nezamzadeh-Ejhieh
Novel photocatalyts were synthesized by dispersion of AgX (X=I, Br, Cl) in nano clinoptilolite particles (NCP). The obtained composites (AgX-NCP) were used for the photodegrading of aqueous mixture of 4-methoxy aniline and 4-chloro-3-nitroaniline under Hg lamp irradiation. All samples were characterized by FT-IR, XRD, DRS and TEM. The effects of operational parameters such as: the loaded extent of AgX, the amount of photocatalyst, initial pH and concentration on photo mineralization were studied. The degradation extent was monitored by UV-Vis spectroscopy and the results were confirmed by the chemical oxygen demand (COD)...
November 29, 2016: Journal of Colloid and Interface Science
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