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https://www.readbyqxmd.com/read/29245185/contribution-of-crop-model-structure-parameters-and-climate-projections-to-uncertainty-in-climate-change-impact-assessments
#1
Fulu Tao, Reimund P Rötter, Taru Palosuo, C G H Díaz-Ambrona, M Inés Mínguez, Mikhail A Semenov, Kurt Christian Kersebaum, Claas Nendel, Xenia Specka, Holger Hoffmann, Frank Ewert, Anaelle Dambreville, Pierre Martre, Lucía Rodríguez, Margarita Ruiz-Ramos, Thomas Gaiser, Jukka G Höhn, Tapio Salo, Roberto Ferrise, Marco Bindi, Davide Cammarano, Alan H Schulman
Climate change impact assessments are plagued with uncertainties from many sources, such as climate projections or the inadequacies in structure and parameters of the impact model. Previous studies tried to account for the uncertainty from one or two of these. Here, we developed a triple-ensemble probabilistic assessment using seven crop models, multiple sets of model parameters, and eight contrasting climate projections together to comprehensively account for uncertainties from these three important sources...
December 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29245174/larger-temperature-response-of-autumn-leaf-senescence-than-spring-leaf-out-phenology
#2
Yongshuo H Fu, Shilong Piao, Nicolas Delpierre, Fanghua Hao, Heikki Hänninen, Yongjie Liu, Wenchao Sun, Ivan A Janssens, Matteo Campioli
Climate warming is substantially shifting the leaf phenological events of plants, and thereby impacting on their individual fitness and also on the structure and functioning of ecosystems. Previous studies have largely focused on the climate impact on spring phenology, and to date the processes underlying leaf senescence and their associated environmental drivers remain poorly understood. In this study, experiments with temperature gradients imposed during the summer and autumn were conducted on saplings of European beech to explore the temperature responses of leaf senescence...
December 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29245159/serum-sex-hormone-binding-globulin-shbg-relation-with-different-components-of-metabolic-syndrome-in-men-with-type-2-diabetes
#3
Khalid Siddiqui, Khalid Al-Rubeaan, Shaik Sarfaraz Nawaz, Khaled H Aburisheh, Anas M Zein Alaabdin, Ibrahim A Tolba
Sex hormone binding globulin (SHBG) is demonstrated to be decreased in subjects with metabolic syndrome (MetS). The aim of the present study was to investigate the association of SHBG in relation to MetS components among men with type 2 diabetes (T2D). This cross-sectional study was carried out among 429 Saudi T2D male patients aged >30 years. Metabolic syndrome was defined using International Diabetes Federation (IDF) criteria. Fasting blood glucose (FBG), HbA1c, albumin, and lipid parameter were measured...
December 15, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29245147/levels-of-trace-elements-methylmercury-and-polybrominated-diphenyl-ethers-in-foraging-green-turtles-in-the-south-china-region-and-their-conservation-implications
#4
Connie Ka Yan Ng, James Chung Wah Lam, Xiao Hua Zhang, He Xiang Gu, Tsung Hsien Li, Min Bin Ye, Zhong Rong Xia, Fei Yan Zhang, Jin Xia Duan, Wen Xiong Wang, Isaac Kam Sum Lam, George H Balazs, Paul K S Lam, Margaret B Murphy
Sea turtles are globally endangered and face daily anthropogenic threats, including pollution. However, there is a lack of ecotoxicological information on sea turtles, especially in the Asia-Pacific region. This study aims to determine pollutant levels of foraging green turtles (Chelonia mydas) in South China, including Hong Kong, Guangdong and Taiwan, as a basis for their conservation. Scute, liver and muscle tissues of stranded green turtles were analysed for levels of 17 trace elements and methylmercury (MeHg) (n = 86 for scute and n = 14 for liver) and polybrominated diphenyl ethers (PBDEs) (n = 11 for muscle and n = 13 for liver)...
December 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29245133/source-identification-and-ecological-impact-evaluation-of-pahs-in-urban-river-sediments-a-case-study-in-taiwan
#5
Y T Tu, J H Ou, D C W Tsang, C D Dong, C W Chen, C M Kao
The Love River and Ho-Jin River, two major urban rivers in Kaohsiung City, Taiwan, are moderately to heavily polluted because different types of improperly treated wastewaters are discharged into the rivers. In this study, sediment and river water samples were collected from two rivers to investigate the river water quality and accumulation of polycyclic aromatic hydrocarbons (PAHs) in sediments. The spatial distribution, composition, and source appointment of PAHs of the sediments were examined. The impacts of PAHs on ecological system were assessed using toxic equivalence quotient (TEQ) of potentially carcinogenic PAHs (TEQcarc) and sediment quality guidelines...
December 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/29245107/impacts-on-the-seagrass-zostera-nigricaulis-from-the-herbicide-fusilade-forte%C3%A2-used-in-the-management-of-spartina-anglica-infestations
#6
Megan Carve, Timothy L Coggan, Jackie H Myers, Bradley Clarke, Dayanthi Nugegoda, Jeff Shimeta
The herbicide Fusilade Forte® (FF) is widely applied in agricultural weed management and in the management of the invasive saltmarsh grass, Spartina anglica (ricegrass or cordgrass). FF (active ingredient fluazifop-P acid, FPA) is selective for poaceous grasses. Its primary mode of action is inhibition of the acetyl coenzyme-A carboxylase (ACCase) specific to this taxonomic group, and its secondary mode is by promotion of oxidative stress. FF is applied to S. anglica infestations in the intertidal zone, in proximity to seagrass meadows...
December 1, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29245086/liquid-chromatography-tandem-mass-spectrometric-assay-for-the-quantitation-of-the-novel-radiation-protective-agent-and-radiation-mitigator-jp4-039-in-murine-plasma
#7
Susan Christner, Jianxia Guo, Robert A Parise, Melanie Ringeval, Adam T Hoye, Peter Wipf, Michael W Epperly, Joel S Greenberger, Jan H Beumer, Julie L Eiseman
JP4-039 radio-protects prior to, and radio-mitigates after ionizing radiation by neutralizing reactive oxygen species. We developed and validated an LC-MS/MS assay for the quantitation of JP4-039 in murine plasma. Methanol protein precipitation of 50μL plasma was followed by isocratic reverse phase chromatography for a 6min run time, and electrospray positive mode ionization mass spectrometric detection. The plasma assay was linear from 1 to 1000ng/mL with appropriate accuracy (97.1-107.6%) and precision (3...
December 12, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29245066/immuno-biological-comparison-of-hepatic-stellate-cells-in-a-reverted-and-activated-state
#8
Mehdi Najar, Hussein Fayyad-Kazan, Wissam H Faour, Adil El Taghdouini, Gordana Raicevic, Leo A van Grunsven, Mustapha Najimi, Etienne Sokal, Laurence Lagneaux
Human hepatic stellate cells (HSCs) demonstrated great immunological plasticity with important consequences for liver cell therapy. Activated HSCs (aHSCs) are in vitro reverted (rHSCs) to a quiescent-like phenotype with potential benefit to reduce liver fibrosis. The goal of this study is to establish and compare the immunological profile of activated and in vitro reverted HSCs and to investigate the impact of inflammatory priming on the immunobiology of both HSCs populations. The distribution of inflammatory primed activated and reverted HSCs across the different phases of the cell cycle is assessed by flow cytometry...
December 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29245053/influence-of-diabetes-on-the-foreign-body-response-to-nitric-oxide-releasing-implants
#9
Robert J Soto, Elizabeth P Merricks, Dwight A Bellinger, Timothy C Nichols, Mark H Schoenfisch
The foreign body response (FBR) to nitric oxide (NO)-releasing subcutaneous implants was compared between healthy and streptozotocin-induced diabetic swine by evaluating inflammation, collagen capsule formation, and angiogenesis. Steel wire substrates were first modified with polyurethane membranes capable of diverse NO-release kinetics (NO fluxes and release durations of 0.8-630.0 pmol cm-2 s-1 and 2-13 d, respectively). The NO-releasing materials were implanted in the subcutis for 3, 10, or 25 d for histological and immunohistochemical evaluation of the FBR...
November 30, 2017: Biomaterials
https://www.readbyqxmd.com/read/29245008/on-the-design-of-combination-cancer-therapy
#10
James H Doroshow, Richard M Simon
Combination therapy programs are the hallmark of the successful treatment of all forms of human malignancies. In this issue of Cell, Palmer and Sorger present data suggesting that cell culture results indicative of synergistic anticancer drug interactions rarely translate clinically and that the results of combination therapies in mouse models or human clinical trials, even if successful, are best explained by the independent activities of the individually administered drugs.
December 14, 2017: Cell
https://www.readbyqxmd.com/read/29245000/does-traumatic-brain-injury-hold-the-key-to-the-alzheimer-s-puzzle
#11
Robert E Becker, Dimitrios Kapogiannis, Nigel H Greig
INTRODUCTION: Neurodegenerative disorders have been a graveyard for hundreds of well-intentioned efforts at drug discovery and development. Concussion and other traumatic brain injuries (TBIs) and Alzheimer's disease (AD) share many overlapping pathologies and possible clinical links. METHODS: We searched the literature since 1995 using MEDLINE and Google Scholar for the terms concussion, AD, and shared neuropathologies. We also studied a TBI animal model as a supplement to transgenic (Tg) mouse AD models for evaluating AD drug efficacy by preventing neuronal losses...
December 12, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29244998/applicability-of-the-national-comprehensive-cancer-network-multinational-association-of-supportive-care-in-cancer-guidelines-for-prevention-and-management-of-chemotherapy-induced-nausea-and-vomiting-in-southeast-asia-a-consensus-statement
#12
Alexandre Chan, Matin M Abdullah, Wan Zamaniah B Wan Ishak, Annielyn B Ong-Cornel, Antonio H Villalon, Ravindran Kanesvaran
A meeting of regional experts was convened in Manila, Philippines, to develop a resource-stratified chemotherapy-induced nausea and vomiting (CINV) management guideline. In patients treated with highly emetogenic chemotherapy in general clinical settings, triple therapy with a serotonin (5-hydroxytryptamine-3 [5-HT3]) antagonist (preferably palonosetron), dexamethasone, and aprepitant is recommended for acute CINV prevention. In resource-restricted settings, triple therapy is still recommended, although a 5-HT3 antagonist other than palonosetron may be used...
December 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/29244988/chemotherapy-use-at-the-end-of-life-in-uganda
#13
Daniel Low, Emily C Merkel, Manoj Menon, Gary H Lyman, Henry Ddungu, Elizabeth Namukwaya, Mhoira Leng, Corey Casper
Purpose Avoiding chemotherapy during the last 30 days of life has become a goal of cancer care in the United States and Europe, yet end-of-life chemotherapy administration remains a common practice worldwide. The purpose of this study was to determine the frequency of and factors predicting end-of-life chemotherapy administration in Uganda. Methods Retrospective chart review and surveys and interviews of providers were performed at the Uganda Cancer Institute (UCI), the only comprehensive cancer center in the area, which serves a catchment area of greater than 100 million people...
December 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/29244973/cooperativity-between-antibiotics-and-antiseptics-testing-the-bactericidal-effect
#14
S Jenull, H Laggner, I Hassl, B Velimirov, M Huettinger, N Zemann
OBJECTIVE: Treatment with antibiotics together with local application of antiseptics is common in wound care. We investigated the effectiveness of an antiseptic in two variations: octenidine (Oct) and octenidine+ (Oct+ with isotonic glucose addition). METHOD: Using the agar diffusion test with cultures of pathogenic Staphylococcus aureus and the non-pathogenic Bordetella petrii, we compared the effectiveness of octenidine to the classical antiseptics beta-isodona (povidone-iodine; PI), chlorhexidine (Chl) and taurolin (Tau) alone, and in combination with various common antibiotics to uncover cooperativity between antiseptics and antibiotics...
December 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/29244971/developing-antimicrobial-calcium-alginate-fibres-from-neem-and-papaya-leaves-extract
#15
F Hussain, M F Khurshid, R Masood, W Ibrahim
OBJECTIVE: The aim of this study was to evaluate an alternative approach to developing antimicrobial alginate fibres using plant extracts, such as those from neem and papaya leaves. METHOD: Aqueous leaves extract from neem, papaya and their hybrid combinations were used as solvent to develop sodium alginate fibres. Sodium alginate polymer containing these extracts was extruded in a calcium chloride (CaCl2) bath to develop neem (NE), papaya (PE) and their hybrid combinations-based calcium alginate fibres (H-1 to H-5)...
December 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/29244965/management-of-chronic-diabetic-foot-ulcers-using-platelet-rich-plasma
#16
V Babaei, H Afradi, H Z Gohardani, F Nasseri, M Azarafza, S Teimourian
OBJECTIVE: Platelet-rich plasma (PRP) has been proposed as an adjunct for the treatment of foot ulcers in patients with diabetes, as well as a treatment for chronic and acute wounds. This study examined the application of PRP in the treatment of diabetic foot ulcers (DFUs) in patients. METHODS: This prospective study was conducted between 2011 and 2014. We used PRP, produced by a kit, for the treatment of DFUs. Patients were allocated to one of three groups, according to size of ulcer...
December 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/29244949/growth-kinetics-and-size-distribution-dynamics-of-viscous-secondary-organic-aerosol
#17
Rahul A Zaveri, John E Shilling, Alla Zelenyuk, Jiumeng Liu, David M Bell, Emma L D'Ambro, Cassandra J Gaston, Joel A Thornton, Alexander Laskin, Peng Lin, Jacqueline M Wilson, Richard C Easter, Jian Wang, Allan K Bertram, Scot T Martin, John H Seinfeld, Douglas R Worsnop
Low bulk diffusivity inside viscous semisolid atmospheric secondary organic aerosol (SOA) can prolong equilibration timescale, but its broader impacts on aerosol growth and size distribution dynamics are poorly understood. Here we present quantitative insights into the effects of bulk diffusivity on the growth and evaporation kinetics of SOA formed under dry conditions from photooxidation of isoprene in the presence of a bimodal aerosol consisting of Aitken (ammonium sulfate) and accumulation (isoprene or -pinene SOA) mode particles...
December 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29244945/pd-catalyzed-aerobic-oxidation-reactions-strategies-to-increase-catalyst-lifetimes
#18
Wilson Ho, Kevin Chung, Andrew J Ingram, Robert M Waymouth
The palladium complex [(neocuproine)Pd(μ-OAc)]2[OTf]2 (1, neocuproine = 2,9-dimethyl-1,10-phenanthroline) is an effective catalyst precursor for the selective oxidation of primary and secondary alcohols, vicinal diols, polyols, and carbohydrates. Both air and benzoquinone can be used as terminal oxidants, but aerobic oxidations are accompanied by oxidative degradation of the neocuproine ligand, thus necessitating high Pd loadings. Several strategies to improve aerobic catalyst lifetimes were devised, guided by mechanistic studies of catalyst deactivation...
December 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29244908/changes-in-coping-and-social-motives-for-drinking-and-alcohol-consumption-across-the-menstrual-cycle
#19
Kayla M Joyce, Amanda Hudson, Roisin O'Connor, Kara Thompson, Megan Hodgin, Tara Perrot, Sherry H Stewart
BACKGROUND: Alcohol use has been reported to fluctuate over women's menstrual cycles (MCs), with increased intake occurring premenstrually/menstrually (phases characterized by heightened negative affect) and during the ovulatory phase (a phase characterized by positive affect). This suggests women may drink for particular emotion-focused reasons at specific points in their cycles. However, no research had yet examined MC variability in drinking motives, or links between cycle-related changes in drinking motives and alcohol consumption...
December 15, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/29244896/total-synthesis-of-sarpagine-related-bioactive-indole-alkaloids
#20
Md Toufiqur Rahman, Jeffrey R Deschamps, Gregory H Imler, James M Cook
Extension of the asymmetric Pictet-Spengler reaction to bulkier Nb-alkylated tryptophan derivatives resulted in an improved stereospecific access to the key bicyclo[3.3.1]nonane core of bioactive C-19 methyl substituted sarpagine/macroline/ajmaline indole alkaloids with excellent diastereoselectivity via internal asymmetric induction. Complete stereocontrol of the C-19 methyl function in either the α- or β-configuration was achieved which enables the total synthesis of any member from this group of thirty alkaloids...
December 15, 2017: Chemistry: a European Journal
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