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https://www.readbyqxmd.com/read/28431445/-near-drowning-with-good-outcome-after-ecmo-therapy-and-therapeutic-hypothermia-despite-20-minutes-of-anoxia-and-16-hours-of-hypoxia
#1
Peter Stachon, Johannes Kalbhenn, Stephan Walterspacher, Christoph Bode, Dawid Staudacher
Introduction Drowning with submersion over 10 minutes is associated with a high mortality. Here, we present a case, in which a good neurological outcome was achieved after interdisciplinary, intensive care therapy despite submersion of 20 minutes followed by 16 hours of hypoxia. History A 19 year old man drowned in fresh-water. After 20 minutes submersion he was localized and salvaged from 8 meters depth and primarily resuscitated successfully after 10 minutes. Within the next hour, there condition worsened by respiratory deterioration due to a massive capillary leak syndrome in addition to a disseminated intravascular coagulation...
April 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28431421/sevoflurane-posttreatment-attenuates-lung-injury-induced-by-oleic-acid-in-dogs
#2
Guizhi Du, Shurong Wang, Zhuo Li, Jin Liu
BACKGROUND: In animal models, both sevoflurane and propofol protect against acute lung injury (ALI), especially when administered prior to ALI onset. We hypothesized that when compared to propofol, sevoflurane administration after the onset of acute respiratory distress syndrome would mitigate oleic acid (OA)-induced ALI in dogs. METHODS: Dogs were randomly assigned to receive intravenous OA to induce ALI (n = 7 for each OA group) or saline as an OA control (n = 6 for each control)...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431388/retention-and-transport-of-graphene-oxide-in-water-saturated-limestone-media
#3
Shunan Dong, Yuanyuan Sun, Bin Gao, Xiaoqing Shi, Hongxia Xu, Jianfeng Wu, Jichun Wu
In this work, column experiments were conducted to investigate the transport characteristics of graphene oxide (GO) nanoparticles in limestone media under various electrolytes, solution pH, and humic acid (HA) concentration conditions. In the limestone media, GO exhibited relatively low mobility with the mass recovery rate lower than 65.2%, even when solution ionic strength was low. The presence of HA enhanced its mobility. In addition, the presence of S(2-), a divalent anion, also promoted GO transport in limestone media compared to Cl(-) under similar ionic strength conditions through neutralizing more positive charge and thus diminishing the cation bridging...
April 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28431385/a-method-for-evaluating-the-pharmaceutical-deconjugation-potential-in-river-water-environments
#4
Takashi Azuma, Mao Ishida, Kanae Hisamatsu, Ayami Yunoki, Kana Otomo, Mari Kunitou, Mai Shimizu, Kaori Hosomaru, Shiori Mikata, Yoshiki Mino
A new enzymatic assay method that uses deconjugation enzymes was developed to evaluate the presence and extent of conjugated pharmaceuticals in the form of glucuronide conjugates or sulphate conjugates in river environments. First, acetaminophen glucuronide (Ace Glu) and acetaminophen sulphate (Ace Sul) were used as model conjugated pharmaceuticals to determine the appropriate combination of deconjugation enzymes and reaction conditions, including temperature, duration and pH. Next, we applied the defined method to 19 pharmaceuticals grouped into nine therapeutic classes that were chosen based on previously detected levels and frequencies in sewage and river water...
April 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28431384/sediment-and-salinity-effects-on-the-bioaccumulation-of-sulfamethoxazole-in-zebrafish-danio-rerio
#5
Y Chen, J L Zhou, L Cheng, Y Y Zheng, J Xu
The dynamic distribution of a widely used antibiotic sulfamethoxazole between water, sediment and aquatic organisms (zebrafish) was studied in microcosms. Sulfamethoxazole concentrations in water were gradually reduced, while in sediment and zebrafish gradually increased, suggesting active adsorption and bioaccumulation processes occurring. The presence of sediment particles and their interactions with water reduced the bioaccumulation of sulfamethoxazole in zebrafish by 13-28%. The sediment of smaller particle size with more organic carbon content and higher surface area, adsorbed sulfamethoxazole more extensively and decreased its bioaccumulation most significantly...
April 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28431380/recent-aspects-of-uranium-toxicology-in-medical-geology
#6
REVIEW
Geir Bjørklund, Olav Albert Christophersen, Salvatore Chirumbolo, Olle Selinus, Jan Aaseth
Uranium (U) is a chemo-toxic, radiotoxic and even a carcinogenic element. Due to its radioactivity, the effects of U on humans health have been extensively investigated. Prolonged U exposure may cause kidney disease and cancer. The geological distribution of U radionuclides is still a great concern for human health. Uranium in groundwater, frequently used as drinking water, and general environmental pollution with U raise concerns about the potential public health problem in several areas of Asia. The particular paleo-geological hallmark of India and other Southern Asiatic regions enhances the risk of U pollution in rural and urban communities...
April 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28431375/radioactivity-in-wastes-generated-from-shale-gas-exploration-and-production-north-eastern-poland
#7
Paweł Jodłowski, Jan Macuda, Jakub Nowak, Chau Nguyen Dinh
In the present study, the K-40, U-238, Ra-226, Pb-210, Ra-228 and Th-228 activity concentrations were measured in 64 samples of wastes generated from shale gas exploration in North-Eastern Poland. The measured samples consist of drill cuttings, solid phase of waste drilling muds, fracking fluids, return fracking fluids and waste proppants. The measured activity concentrations in solid samples vary in a wide range from 116 to around 1100 Bq/kg for K-40, from 14 to 393 Bq/kg for U-238, from 15 to 415 Bq/kg for Ra-226, from 12 to 391 Bq/kg for Pb-210, from a few Bq/kg to 516 Bq/kg for Ra-228 and from a few Bq/kg to 515 Bq/kg for Th-228...
April 18, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28431371/past-present-and-future-land-use-changes-and-their-impact-on-water-balance
#8
Sananda Kundu, Deepak Khare, Arun Mondal
Landuse change influences the water balance of a region affecting the available water along with the change in the evapotranspiration (ET). The major objectives of this study are to assess the landuse change and its impact on the water balance of the study area, which is a part of the Narmada river basin in Madhya Pradesh, India. Landuse changes of 1990, 2000 and 2011 have been analyzed and the Markov Chain model has been used to predict decadal change of 2020, 2030, 2040 and 2050 landuse. The influence of the past, present and future landuse change on water balance has been analyzed with the SWAT (Soil and Water Analysis Tool) model in the study area...
April 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28431370/hydrodynamic-influence-on-reservoir-sustainability-in-semi-arid-climate-a-physicochemical-and-environmental-isotopic-study
#9
Rawaa Ammar, Véronique Kazpard, Antoine G El Samrani, Nabil Amacha, Zeinab Saad, Lei Chou
Water scarcity and increasing water demand require the development of water management plans such as establishing artificial lakes and dams. Plans to meet water needs are faced by uprising challenges to improve water quality and to ensure the sustainability of hydro-projects. Environmental isotopes coupled to water physicochemical characteristics were investigated over a biennial cycle to assess both geomorphological and environmental impacts on the water quality of a reservoir situated in an intensively used agricultural watershed under a Mediterranean semi-arid climate...
April 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28431352/degradation-of-sulfamethoxazole-by-uv-uv-h2o2-and-uv-persulfate-pds-formation-of-oxidation-products-and-effect-of-bicarbonate
#10
Yi Yang, Xinglin Lu, Jin Jiang, Jun Ma, Guanqi Liu, Ying Cao, Weili Liu, Juan Li, Suyan Pang, Xiujuan Kong, Congwei Luo
The frequent detection of sulfamethoxazole (SMX) in wastewater and surface waters gives rise of concerns about their ecotoxicological effects and potential risks to induce antibacterial resistant genes. UV/hydrogen peroxide (UV/H2O2) and UV/persulfate (UV/PDS) advanced oxidation processes have been demonstrated to be effective for the elimination of SMX, but there is still a need for a deeper understanding of product formations. In this study, we identified and compared the transformation products of SMX in UV, UV/H2O2 and UV/PDS processes...
March 28, 2017: Water Research
https://www.readbyqxmd.com/read/28431350/characteristics-and-components-of-poly-aluminum-chloride-coagulants-that-enhance-arsenate-removal-by-coagulation-detailed-analysis-of-aluminum-species
#11
Yoshihiko Matsui, Nobutaka Shirasaki, Takuro Yamaguchi, Kenta Kondo, Kaori Machida, Taiga Fukuura, Taku Matsushita
We evaluated 51 poly-aluminum chloride (PACl) coagulants to determine the coagulant characteristics that were responsible for effective arsenate removal from contaminated river water by means of experiments involving coagulation, settling, and microfiltration. Some of the high-basicity PACls exhibited high arsenate removal percentages, particularly under alkaline conditions, and we investigated various relevant properties and characteristics of these high-basicity PACls. Effective arsenate removal was correlated with the content of polymeric and colloidal aluminum species (Alb and Alc) in the PACls but was not well correlated with colloid charge or zeta potential...
April 15, 2017: Water Research
https://www.readbyqxmd.com/read/28431349/impacts-of-environmental-factors-on-arsenate-biotransformation-and-release-in-microcystis-aeruginosa-using-the-taguchi-experimental-design-approach
#12
Zhenhong Wang, Zhuanxi Luo, Changzhou Yan, Baoshan Xing
Very limited information is available on how and to what extent environmental factors influence arsenic (As) biotransformation and release in freshwater algae. These factors include concentrations of arsenate (As(V)), dissolved inorganic nitrogen (N), phosphate (P), and ambient pH. This study conducted a series of experiments using Taguchi methods to determine optimum conditions for As biotransformation. We assessed principal effective factors of As(V), N, P, and pH and determined that As biotransformation and release actuate at 10...
April 18, 2017: Water Research
https://www.readbyqxmd.com/read/28431347/improving-water-quality-in-china-environmental-investment-pays-dividends
#13
Yongqiang Zhou, Jianrong Ma, Yunlin Zhang, Boqiang Qin, Erik Jeppesen, Kun Shi, Justin D Brookes, Robert G M Spencer, Guangwei Zhu, Guang Gao
This study highlights how Chinese economic development detrimentally impacted water quality in recent decades and how this has been improved by enormous investment in environmental remediation funded by the Chinese government. To our knowledge, this study is the first to describe the variability of surface water quality in inland waters in China, the affecting drivers behind the changes, and how the government-financed conservation actions have impacted water quality. Water quality was found to be poorest in the North and the Northeast China Plain where there is greater coverage of developed land (cities + cropland), a higher gross domestic product (GDP), and higher population density...
April 14, 2017: Water Research
https://www.readbyqxmd.com/read/28431346/caged-gammarus-as-biomonitors-identifying-thresholds-of-toxic-metal-bioavailability-that-affect-gammarid-densities-at-the-french-national-scale
#14
Alexandre Ciliberti, Arnaud Chaumot, Rémi Recoura-Massaquant, André Chandesris, Adeline François, Marina Coquery, Martial Ferréol, Olivier Geffard
Bioaccumulated concentrations of toxic elements in biomonitor invertebrate species have already been used to successfully link metal bioavailability and impairments of stream macroinvertebrate communities at the scale of the watershed. However, implementing this empirical comparative approach at a greater spatial scale remains a challenge due to the diversity of biogeographical contexts encompassed by regional and national scales. We showed in previous studies that the use of standard organisms caged permits the use of a common biomonitor over a far greater geographical range, while limiting the influence of confounding factors on levels of bioavailable contamination...
April 17, 2017: Water Research
https://www.readbyqxmd.com/read/28431338/the-design-and-fabrication-of-beta-sensor-system-for-in-situ-diffusion-tests-in-mudstone-in-france
#15
Zhenhua Lin, Olivier Tillement, Marie-Genevieve Blanchin, Vivek Jindal, Agnès Vinsot, Romain V H Dagnelie, Virginie Blin, Yanick Lettry, Benoit Hautefeuille
Long term in situ diffusion experiments in the Callovian-Oxfordian mudstone (France) are designed in the context of nuclear waste management. β-emitters HTO and (36)Cl radiotracers are representative of neutral and anionic species in these experiments. Studies have been carried out to design an in situ beta monitoring system in order to quantify tracer migration in the rock pore water over time. The development, design and calibration of β-emitter radiation sensors were performed. An optimised geometry was calculated for the detection chamber of (36)Cl in solution (Ø×L=30×2mm(2)) via Monte-Carlo N-Particle transport simulation tools...
April 1, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28431337/a-possible-approach-to-14mev-neutron-moderation-a-preliminary-study-case
#16
D Flammini, R Pilotti, A Pietropaolo
Deuterium-Tritium (D-T) interactions produce almost monochromatic neutrons with about 14MeV energy. These neutrons are used in benchmark experiments as well as for neutron cross sections assessment in fusion reactors technology. The possibility to moderate 14MeV neutrons for purposes beyond fusion is worth to be studied in relation to projects of intense D-T sources. In this preliminary study, carried out using the MCNP Monte Carlo code, the moderation of 14MeV neutrons is approached foreseeing the use of combination of metallic materials as pre-moderator and reflectors coupled to standard water moderators...
April 12, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28431320/trehalose-supplementation-reduces-hepatic-endoplasmic-reticulum-stress-and-inflammatory-signaling-in-old-mice
#17
Michael J Pagliassotti, Andrea L Estrada, William M Hudson, Yuren Wei, Dong Wang, Douglas R Seals, Melanie L Zigler, Thomas J LaRocca
The accumulation of damaged proteins can perturb cellular homeostasis and provoke aging and cellular damage. Quality control systems, such as the unfolded protein response (UPR), inflammatory signaling and protein degradation, mitigate the residence time of damaged proteins. In the present study, we have examined the UPR and inflammatory signaling in the liver of young (~6 months) and old (~28 months) mice (n=8/group), and the ability of trehalose, a compound linked to increased protein stability and autophagy, to counteract age-induced effects on these systems...
April 6, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28431316/pbdes-polybrominated-diphenyl-ethers-pose-a-risk-to-captive-giant-pandas
#18
Yi-Ping Chen, Ying-Juan Zheng, Qiang Liu, Aaron M Ellison, Yan Zhao, Qing-Yi Ma
The Qinling subspecies of giant panda (Ailuropoda melanoleuca qinlingensis), is highly endangered; fewer than 350 individuals still inhabit Qinling Mountains. Previous research revealed captive pandas were exposed to bromine, so we hypothesized that captive pandas were exposed to and affected by polybrominated diphenyl ethers (PBDEs). To test this hypothesis, we tested blood and feces of captive and wild pandas, their drinking water, food (bamboo leaves) from SWARC (Shaanxi Wild Animal Research Center)and FNNR (Foping National Nature Reserve) and supplemental feedstuff given to captive panda at SWARC...
April 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28431314/effect-of-metals-on-microcystin-abundance-and-environmental-fate
#19
Guofei Dai, Ningyan Peng, Jiayou Zhong, Ping Yang, Binchun Zou, Hui Chen, Qian Lou, Yuanyuan Fang, Wei Zhang
Metals can react with microcystin (MC), which is released from cyanobacterial blooms through various mechanisms; these reactions may mitigate the environmental and health risks of MCs but may also cause harm to aquatic ecosystems and humans. Several studies were conducted, including laboratory tests, ecological simulations, and a field investigation of Poyang Lake. The laboratory studies showed that Fe(3+), Cu(2+), and Pb(2+) stimulated MC photodegradation under high light intensity at the water-sediment interface, which reduced the MC accumulation in the sediment...
April 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28431310/characterization-of-bacterial-communities-of-donkey-milk-by-high-throughput-sequencing
#20
Maria de Los Dolores Soto Del Rio, Alessandra Dalmasso, Tiziana Civera, Maria Teresa Bottero
The interest in donkey milk (DM) is growing because of its functional properties and nutritional value, especially for children with allergies and food intolerances. However, most of the available reports of DM microbiota are based on culture-dependent methods to investigate food safety issues and the presence of lactic acid bacteria (LAB). The aim of this study was to determine the composition of DM bacterial communities using a high-throughput sequencing (HTS) approach. Bulk milk samples from Italian donkey dairy farms from two consecutive years were analysed using the MiSeq Illumina platform...
March 30, 2017: International Journal of Food Microbiology
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