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https://www.readbyqxmd.com/read/29232732/high-salt-intake-promotes-different-responses-to-urodilatin-and-uroguanylin-in-the-isolated-rat-kidney
#1
Antonio Rafael Coelho Jorge, Pedro Henrique Sá Costa, Helena Serra Azul Monteiro, Manassés Claudino Fonteles
Urodilatin (UD) and uroguanylin (UGN) have been implicated in the regulation of salt and water homeostasis, particularly in the balance handling of salt intake. In this sense, the aim of the present work was to study the main effects of these peptides in kidneys from animals subjected to high NaCl (2%) intake, during 10 days in metabolic cages. The control group received only normal water, whereas the treated group drank 2% solution of NaCl (NaCl 2%). In addition, we studied effect of subthreshold UD (0.14 nM) and UGN (0...
December 12, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29232708/elimination-of-trachoma-as-a-public-health-problem-in-ghana-providing-evidence-through-a-pre-validation-survey
#2
Oscar Debrah, Ernest O Mensah, Laura Senyonjo, Dziedzom K de Souza, Tei E Hervie, David Agyemang, Didier Bakajika, Benjamin Marfo, Felix Ahorsu, Seth Wanye, Robin Bailey, Joseph B Koroma, Agatha Aboe, Nana-Kwadwo Biritwum
BACKGROUND: In order to achieve elimination of trachoma, a country needs to demonstrate that the elimination prevalence thresholds have been achieved and then sustained for at least a two-year period. Ghana achieved the thresholds in 2008, and since 2011 has been implementing its trachoma surveillance strategy, which includes community and school screening for signs of follicular trachoma and trichiasis, in trachoma-endemic districts. In 2015-2016, the country conducted a district level population-based survey to validate elimination of trachoma as a public health problem...
December 12, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29232691/effect-of-food-simulating-liquids-on-the-flexural-strength-of-a-methacrylate-and-silorane-based-composite
#3
Ehsan Mohammadi, Leila Pishevar, Parvin Mirzakouchaki Boroujeni
OBJECTIVE: The purpose of this study was to assess the effect of food-simulating liquids on the flexural strength of a methacrylate-based and a silorane-based resin composite. MATERIALS AND METHODS: In this in vitro study, sixty specimens of Filtek P90 and Filtek Z350 composite were prepared in a customized mold (2 × 2 × 25 mm). The specimens of each composite were divided into five subgroups as follows: one as a control group and the other four groups included distilled water, heptane, 2% citric acid, and 50% aqueous ethanol...
2017: PloS One
https://www.readbyqxmd.com/read/29232642/feasibility-of-the-uv-aa-process-as-a-pretreatment-approach-for-bioremediation-of-dye-laden-wastewater
#4
Minghui Yang, Bingdang Wu, Qiuhao Li, Xiaofeng Xiong, Haoran Zhang, Yu Tian, Jiawen Xie, Ping Huang, Suo Tan, Guodong Wang, Li Zhang, Shujuan Zhang
Biodegradability and toxicity are two important indexes in considering the feasibility of a chemical process for environmental remediation. The acetylacetone (AA) mediated photochemical process has been proven as an efficient approach for dye decolorization. Both AA and its photochemical degradation products had a high bioavailability. However, the biocompatibility and ecotoxicology of the UV/AA treated solutions are unclear yet. In the present work, we evaluated the biocompatibility and toxicity of the UV/AA treated solutions at both biochemical and organismal levels...
December 1, 2017: Chemosphere
https://www.readbyqxmd.com/read/29232640/decomposition-of-ibuprofen-in-water-via-an-electrochemical-process-with-nano-sized-carbon-black-coated-carbon-cloth-as-oxygen-permeable-cathode-integrated-with-ultrasound
#5
Reza Darvishi Cheshmeh Soltani, Masumeh Mashayekhi
The main aim of the present investigation was the treatment of ibuprofen (IBP)-polluted aquatic phase using a novel oxygen-permeable cathode (OPC)-equipped electrochemical process (ECP) integrated with ultrasound (US). According to kinetic modeling, the decomposition rate of IBP by the integrated process was 3.2 × 10-2 min-1 which was significant in comparison with the OPC-equipped ECP (1.4 × 10-2 min-1) and US alone (2.4 × 10-3 min-1). Increasing the current resulted in the enhanced generation of H2O2 and consequently, improved the degradation of IBP in the solution...
December 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/29232636/magnetite-lanthanum-hydroxide-for-phosphate-sequestration-and-recovery-from-lake-and-the-attenuation-effects-of-sediment-particles
#6
Liping Fang, Ru Liu, Ji Li, Cuihong Xu, Li-Zhi Huang, Dongsheng Wang
An effective approach for eutrophication control and phosphate recovery remains a longstanding challenge. Herein, we present a new technique for phosphate sequestration in lake and phosphate recovery using novel magnetically recoverable magnetite/lanthanum hydroxide [M-La(OH)3] hybrids that can be prepared using a simple one-pot synthesis method. Batch studies show that M-La(OH)3 exhibits a strong sorption towards phosphate with sorption capacities of up to 52.7 mg-P/g at pH 7.0 in water. A simple model indicates that the efficiency of M-La(OH)3 for phosphate sequestration in lake is significantly attenuated by 34-45% compared to that in water, due to interference from sediment particles...
December 5, 2017: Water Research
https://www.readbyqxmd.com/read/29232632/inactivation-of-escherichia-coli-o157-h7-and-salmonella-deposited-on-gloves-in-a-liquid-state-and-subjected-to-drying-conditions
#7
Marilyn C Erickson, Jye-Yin Liao, Cathy C Webb, Mussie Y Habteselassie, Jennifer L Cannon
Gloves are worn by workers harvesting ready-to-eat produce as a deterrent for contaminating the produce with enteric pathogens that may reside on their hands. As fields are not sterile environments, the probability for gloves to become contaminated still exists and therefore it is critical to understand the conditions that affect the survival of pathogens on gloves. Both Escherichia coli O157:H7 and Salmonella deposited on glove surfaces in a liquid state survived longer when the pathogen had been suspended in lettuce sap than when suspended in water...
November 29, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29232609/influence-of-direct-and-sequential-extraction-methodology-on-metabolic-profiling
#8
K M Maria John, James Harnly, Devanand Luthria
A systematic comparison was made of the detected metabolite profiles for two plant materials (black beans and soybeans) and a dietary supplement (black cohosh) extracted using sequential (hexane, ethyl acetate, and 50% aqueous methanol) and direct extraction with three solvent systems (80% aqueous methanol, methanol/chloroform/water (2.5:1:1, v/v/v) and water). Extracts were analyzed by LC-MS (without derivatization) and GC-FID (with BSTFA/TMCS derivatizations). For sequential extraction, HPLC-UV and BSTFA/TMCS-derivatized GC-FID detection were more responsive to the polar molecules with a rough distribution of 10%, 10%, and 80% of the total signals in hexane, ethyl acetate, and 50% aqueous methanol, respectively...
December 5, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29232606/microwave-assisted-synthesis-for-a2e-and-development-of-lc-esi-ms-method-for-quantification-of-ocular-bisretinoids-in-human-retina
#9
A Kotnala, S Senthilkumari, N Halder, A Kumar, T Velpandian
PURPOSE: To develop a microwave assisted method for the rapid synthesis of A2E and also to develop a method to quantify N-retinylidene-N-retinylethanolamine(A2E), all-trans retinal dimer (ATRD), A2-glycerophospho ethanolamine (A2GPE), dihydropyridine phosphatidyl ethanolamine (A2DHPE) and monofuran A2E (MFA2E) in age matched retina. METHODS: The development of microwave assisted synthesis of A2E, its purification and characterization for its utility in quantification in human retina...
November 26, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29232601/marine-microalgae-for-production-of-biofuels-and-chemicals
#10
REVIEW
Yoshiaki Maeda, Tomoko Yoshino, Tadashi Matsunaga, Mitsufumi Matsumoto, Tsuyoshi Tanaka
Marine microalgae are recognized as promising feedstocks for biofuels and chemicals owing to their higher growth rates than those of terrestrial crop plants. We aimed to summarize the production of biofuels and chemicals by marine microalgae and to discuss their advantages and potential from the aspect of bioprocess. The present circumstances of the microalgae industry were briefly described and large-scale industrial plants for microalgae production, where some marine microalgae are cultivated, were introduced...
December 9, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29232561/development-of-artificial-intelligence-approach-to-forecasting-oyster-norovirus-outbreaks-along-gulf-of-mexico-coast
#11
Shima Shamkhali Chenar, Zhiqiang Deng
This paper presents an artificial intelligence-based model, called ANN-2Day model, for forecasting, managing and ultimately eliminating the growing risk of oyster norovirus outbreaks. The ANN-2Day model was developed using Artificial Neural Network (ANN) Toolbox in MATLAB Program and 15-years of epidemiological and environmental data for six independent environmental predictors including water temperature, solar radiation, gage height, salinity, wind, and rainfall. It was found that oyster norovirus outbreaks can be forecasted with two-day lead time using the ANN-2Day model and daily data of the six environmental predictors...
December 9, 2017: Environment International
https://www.readbyqxmd.com/read/29232512/direct-anionic-effect-on-water-structure-and-indirect-anionic-effect-on-peptide-backbone-hydration-state-revealed-by-thin-layer-infrared-spectroscopy
#12
Juan Zhao, Jianping Wang
In this work, anionic effect on water structure and on peptide backbone and water interaction was investigated directly in aqueous solution using thin-layer transmission infrared spectroscopy. The chaotropic anions were found to weaken the water hydrogen-bonding strength and red shift the HOH bending frequency, while the kosmotropic anions were found to strengthen the water hydrogen-bonding network and blue shift the HOH bending frequency. The kosmotropes, especially F-, blue shift the vibrational frequencies of both amide-II and amide-III bands of N-methylacetamide (NMA), indicating NMA is in the "salting-in" state; while the chaotropes (Cl-, NO3-, Br-, I-, and SCN-) red shift the frequencies of the two normal modes, indicating NMA is in the "salting-out" state...
December 12, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29232507/interfacial-deposition-of-ru-ii-bipyridine-dicarboxylate-complexes-by-ligand-substitution-for-applications-in-water-oxidation-catalysis
#13
Degao Wang, Seth L Marquard, Ludovic Troian-Gautier, Matthew V Sheridan, Benjamin D Sherman, Ying Wang, Michael S Eberhart, Byron H Farnum, Christopher J Dares, Thomas J Meyer
Water oxidation is a critical step in artificial photosynthesis and provides the protons and electrons used in reduction reactions to make solar fuels. Significant advances have been made in the area of molecular water oxidation catalysts with a notable breakthrough in the development of Ru(II) complexes that use a planar "bda" ligand (bda is 2,2'-bipyridine-6,6'-dicarboxylate). These Ru(II)(bda) complexes show lower overpotentials for driving water oxidation making them ideal for light-driven applications with a suitable chromophore...
December 12, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29232418/nano-emulsions-as-vehicles-for-topical-delivery-of-forskolin
#14
Małgorzata Miastkowska, Elżbieta Sikora, Elwira Lasoń, Maria Jose Garcia-Celma, Elvira Escribano-Ferrer, Conxita Solans, Meritxell Llinas
Two O/W forskolin-loaded nano-emulsions (0.075% wt.) based on medium chain triglycerides (MCT) and stabilized by a nonionic surfactant (Polysorbate 80 or Polysorbate 40) were studied as forskolin delivery systems. The nano-emulsions were prepared by the PIC method. The mean droplet size of the nano-emulsions with Polysorbate 80 and Polysorbate 40 with oil/surfactant (O/S) ratios of 20/80 and 80% water concentration, measured by Dynamic Light Scattering (DLS), was of 118 nm and 111 nm, respectively. Stability of the formulations, as assessed by light backscattering for 24 h, showed that both nano-emulsions were stable at 25ºC...
December 13, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29232381/effects-of-experimental-nitrogen-fertilization-on-planktonic-metabolism-and-co2-flux-in-a-hypereutrophic-hardwater-lake
#15
Matthew J Bogard, Kerri Finlay, Marley J Waiser, Vijay P Tumber, Derek B Donald, Emma Wiik, Gavin L Simpson, Paul A Del Giorgio, Peter R Leavitt
Hardwater lakes are common in human-dominated regions of the world and often experience pollution due to agricultural and urban effluent inputs of inorganic and organic nitrogen (N). Although these lakes are landscape hotspots for CO2 exchange and food web carbon (C) cycling, the effect of N enrichment on hardwater lake food web functioning and C cycling patterns remains unclear. Specifically, it is unknown if different eutrophication scenarios (e.g., modest non point vs. extreme point sources) yield consistent effects on auto- and heterotrophic C cycling, or how biotic responses interact with the inorganic C system to shape responses of air-water CO2 exchange...
2017: PloS One
https://www.readbyqxmd.com/read/29232370/spatio-temporal-variations-of-conservation-hotspots-based-on-ecosystem-services-in-xishuangbanna-southwest-china
#16
Shiliang Liu, Yijie Yin, Fangyan Cheng, Xiaoyun Hou, Shikui Dong, Xue Wu
Integrating biodiversity and ecosystem services (BES) has been viewed as an appropriate approach to identifying conservation priorities. Taking Xishuangbanna tropical region in Southwest China, different BESs (habitat quality [used as a proxy for biodiversity], carbon storage, and water yield) were quantified using the InVEST model and conservation hotspots from 1976, 1990, and 2010 were identified by overlapping and ranking the service layers. Results showed that BESs areas were unevenly distributed. High habitat quality and carbon storage areas located in the eastern part of the region were mainly occupied by broad-leaved forest, while high water yield areas were covered by grassland and tropical forests...
2017: PloS One
https://www.readbyqxmd.com/read/29232361/resistance-mechanisms-watering-down-a-warhead
#17
Caitlin Deane
No abstract text is available yet for this article.
December 12, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/29232224/analgesic-somnoform-in-waterbury-nap-a-minit-adds-chlorides-to-the-bromide
#18
(no author information available yet)
No abstract text is available yet for this article.
January 2018: Anesthesiology
https://www.readbyqxmd.com/read/29232192/vitamin-e-improved-redox-homeostasis-in-heart-and-aorta-of-hypothyroid-rats
#19
M Hedayati, S Niazmand, M Hosseini, Y Baghcheghi, F Beheshti, S Niazmand
OBJECTIVES: The objective of this study was to evaluate the effect of vitamin E on the oxidative stress parameters and antioxidant defense enzymes in the heart and aorta of 6-n-propylthiouracil (PTU)-induced hypothyroid rats. METHODS: The animals were divided into 4 experimental groups: Group 1 (Euthyroid) received tap water, Group 2 (Hypothyroid) received 0.05 % of PTU in dissolved in their drinking water, Group 3 (PTU+Vit E) hypothyroid rats treated with vitamin E, and Group 4 (Euthyroid+Vit E)...
October 26, 2017: Endocrine Regulations
https://www.readbyqxmd.com/read/29232163/application-of-mine-water-leaching-protocol-on-coal-fly-ash-to-assess-leaching-characteristics-for-suitability-as-a-mine-backfill-material
#20
Godfrey Madzivire, Koena Ramasenya, Supi Tlowana, Henk Coetzee, Viswanath R K Vadapalli
Over the years, coal mining in the Mpumalanga Province of South Africa has negatively affected the environment by causing pollution of water resources, land subsidence and spontaneous coal combustion. Previous studies show that in-situ treatment of acid mine drainage (AMD) using coal fly ash (CFA) from local power stations was possible and sludge recovered out of such treatment can be used to backfill mines. In this article, the authors have attempted to understand the leaching characteristics of CFA when placed underground as a backfill material using the mine water leaching protocol (MWLP)...
December 12, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
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