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https://www.readbyqxmd.com/read/28523616/the-effect-of-multiple-contamination-of-soil-on-lmw-and-mmw-pahs-accumulation-in-the-roots-of-rubus-fruticosus-l-naturally-growing-near-the-copper-mining-and-smelting-complex-bor-east-serbia
#1
Slađana Č Alagić, Vesna P Stankov Jovanović, Violeta D Mitić, Jelena S Nikolić, Goran M Petrović, Snežana B Tošić, Gordana S Stojanović
Samples of roots and spatial soils of native Rubus fruticosus L. were collected from the spots positioned at different distances from the copper smelter and city heating plants in the industrial zone of the town of Bor (Serbia) and subjected to chemical analyses in order to determine the content of several heavy metals, and 15 priority polycyclic aromatic hydrocarbons (PAHs). In this study, the results for 9 low and medium molecular weight PAHs (LMW and MMW PAHs) are represented and processed using the calculation of bio-concentration factors and statistical methods such as hierarchical cluster analysis and Pearson's correlation study with the aim of investigating the plant capabilities for their uptake from the soil and later accumulation into the root tissue, under the hostile circumstances of multiple contamination...
May 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28512992/association-of-cd8-t-cells-with-bone-erosion-in-patients-with-rheumatoid-arthritis
#2
Young Bin Joo, Youngho Park, Kwangwoo Kim, So-Young Bang, Sang-Cheol Bae, Hye-Soon Lee
AIM: Bone erosion is a major problem worsening quality of rheumatoid arthritis (RA) patients' lives. However, causal factors responsible for bone erosion in RA have remained unclear. We aimed to examine genetic variants conferring bone erosion in RA using a Korean genome-wide association study (GWAS) and to search for possible biological mechanisms underlying the development of bone erosion. METHOD: We obtained genome-wide single nucleotide polymorphism (SNP) data for 711 Korean RA patients using Illumina HapMap 550v3/660W arrays...
May 16, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28499223/decomposing-the-land-use-specific-response-of-plant-functional-traits-along-environmental-gradients
#3
Veronika Fontana, Marina Kohler, Georg Niedrist, Michael Bahn, Ulrike Tappeiner, Georg Frenck
Environmental conditions affect functional trait variability within communities and thus shape ecosystem properties. With the ability of plants to adapt morphologically and physiologically to changing abiotic conditions, gradient analysis was shown to be a suitable tool to identify the drivers which determine trait values. Apart from direct environmental drivers and indirect gradients such as elevation, also anthropogenic effects (e.g. irrigation, grazing) can influence trait variability. Our aim was to assess the interactive effects of different environmental drivers on major plant traits and to investigate how these are modulated within two different land-use types (hay meadow vs...
May 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28498622/regulation-of-raw264-7-macrophage-polarization-on-smooth-and-rough-surface-topographies-by-galectin-3
#4
F Kianoush, M Nematollahi, J D Waterfield, D M Brunette
Recognition of topographical features induces phenotypic changes in macrophages although the receptors and signaling pathways are not completely characterized. As integrin molecules in focal adhesions/podosomes are in intimate contact with topography and topography modulates the NFkB pathway through cholesterol enriched raft-associated adhesive signaling structures we hypothesized that a cell-surface signaling complex comprised of galectin-3 together with its ligand CD98 and integrinβ1 is important for topography-directed lineage determination...
May 12, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28496966/effects-of-deer-on-the-photosynthetic-performance-of-invasive-and-native-forest-herbs
#5
J Mason Heberling, Nathan L Brouwer, Susan Kalisz
Overabundant generalist herbivores can facilitate non-native plant invasions, presumably through direct and indirect modifications to the environment that affect plant performance. However, ecophysiological mechanisms behind ungulate-mediated plant invasions have not been well-studied. At a long-term Odocoileus virginianus (white-tailed deer) exclusion site in a temperate deciduous forest, we quantified deer-mediated ecophysiological impacts on an invasive biennial Alliaria petiolata (garlic mustard) and two palatable native herbaceous perennials, Maianthemum racemosum and Trillium grandiflorum...
March 2017: AoB Plants
https://www.readbyqxmd.com/read/28495618/a-model-of-acute-renal-allograft-rejection-in-outbred-yorkshire-piglets
#6
Randi Lassiter, Youli Wang, Xuexiu Fang, Matt Winn, Arina Ghaffari, Chak-Sum Ho, Sandra Helman, Ryan Jajosky, Daniel Kleven, N Stanley Nahman, Todd D Merchen
Pigs represent a desirable animal model for the study of rejection in kidney transplantation with inbred Yucatan miniature swine (YMS) the most commonly studied strain due to well defined swine leukocyte antigen (SLA) genotypes. However, limitations to YMS may include cost and availability. Outbred Yorkshire pigs are widely available and significantly cheaper than YMS. Recent advances in SLA genotyping have allowed its application to outbred strains. On this basis, we theorized that Yorkshire pigs would be a viable alternative to YMS for the study of rejection in kidney transplantation...
May 8, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28492424/a-new-highly-hydrophilic-electrochemical-implant-titanium-surface-a-histological-and-biomechanical-in-vivo-study
#7
Paolo Trisi, Marco Berardini, Antonello Falco, Enrico Sandrini, Michele Podaliri Vulpiani
PURPOSE: The aim was to compare the osseointegration degree and secondary implant stability between implants with different surface treatments. MATERIALS AND METHODS: A novel electrochemical treatment was applied to modify the sandblasted and acid-etched surface (SLA) to obtain the new hydrophilic Feeling (FEL) surface presenting a highly soluble and homogenous film made of calcium and phosphorus nanocrystals. Twenty 3.8 × 10-mm dynamix implants (Cortex) were inserted in sheep iliac crests...
May 10, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28486535/are-trait-growth-models-transferable-predicting-multi-species-growth-trajectories-between-ecosystems-using-plant-functional-traits
#8
Freya M Thomas, Peter A Vesk
Plant functional traits are increasingly used to generalize across species, however few examples exist of predictions from trait-based models being evaluated in new species or new places. Can we use functional traits to predict growth of unknown species in different areas? We used three independently collected datasets, each containing data on heights of individuals from non-resprouting species over a chronosquence of time-since-fire sites from three ecosystems in south-eastern Australia. We examined the influence of specific leaf area, woody density, seed size and leaf nitrogen content on three aspects of plant growth; maximum relative growth rate, age at maximum growth and asymptotic height...
2017: PloS One
https://www.readbyqxmd.com/read/28480611/corrosion-behavior-of-surface-modifications-on-titanium-dental-implant-in-situ-bacteria-monitoring-by-electrochemical-techniques
#9
Ivan Díaz, Miguel Ángel Pacha-Olivenza, Ricardo Tejero, Eduardo Anitua, Maria Luisa González-Martín, Maria Lorenza Escudero, Maria Cristina García-Alonso
The effects of surface modifications and bacteria on the corrosion behavior of titanium have been studied. Five surface modifications were analyzed: two acid etchings (op V, op N), acid etching + anodic oxidation (op NT), sandblasting + acid etching (SLA), and machined surfaces (mach). The corrosion behavior of the surface modifications was evaluated by following the standard ANSI/AAMI/ISO 10993-15:2000. Cyclic potentiodynamic and potentiostatic anodic polarization tests and ion release by ICP-OES after immersion for 7 days in 0...
May 8, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28475267/sublethal-effects-of-the-pyrethroid-insecticide-deltamethrin-on-oxidative-stress-parameters-in-green-toad-bufotes-viridis-l
#10
Tijana B Radovanović, Mohammed Nasia, Imre I Krizmanić, Marko D Prokić, Jelena P Gavrić, Svetlana G Despotović, Branka R Gavrilović, Slavica S Borković-Mitić, Slađan Z Pavlović, Zorica S Saičić
Pyrethroids are synthetic insecticides widely used in agriculture, public health and veterinary medicine. Deltamethrin, a type II of pyrethroid insecticide, has attracted particular attention because of its frequent use. The mechanisms of the toxicity of most pesticides, including pyrethroids, in nontarget organisms is linked to the production of free radicals, oxidative stress induction, increased lipid peroxidation (LPO) and disruption of the total antioxidant potential. The aim of present study was to investigate the effects of acute toxicity of three different concentrations (8 mg/kg body weight (bw), 16 mg/kg bw and 32 mg/kg bw) of orally applied deltamethrin after 96 hours of treatment...
May 5, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28462009/a-resonance-frequency-analysis-of-sandblasted-and-acid-etched-implants-with-different-diameters-a-prospective-clinical-study-during-the-initial-healing-period
#11
Hyun-Joo Kim, Yeun-Kang Kim, Ji-Young Joo, Ju-Youn Lee
PURPOSE: The possibility of immediate or early loading has become popular in implant dentistry. A prerequisite for the immediate or early loading of an implant prosthesis is the achievement of initial stability in the implant. Moreover, in response to clinicians' interest in verifying clinical stability to determine the optimal time point for functional loading, a non-invasive method to assess implant stability has been developed on the basis of resonance frequency analysis (RFA). The primary objective of this study was to monitor the stability of sandblasted, large-grit, and acid-etched (SLA) implants with different diameters during the early phases of healing by RFA...
April 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28459285/a-validation-study-of-reconstructed-rapid-prototyping-models-produced-by-two-technologies
#12
Christian Andreas Dietrich, Andreas Ender, Stefan Baumgartner, Albert Mehl
OBJECTIVE: To determine the accuracy (trueness and precision) of two different rapid prototyping (RP) techniques for the physical reproduction of three-dimensional (3D) digital orthodontic study casts, a comparative assessment using two 3D STL files of two different maxillary dentitions (two cases) as a reference was accomplished. MATERIALS AND METHODS: Five RP replicas per case were fabricated using both stereolithography (SLA) and the PolyJet system. The 20 reproduced casts were digitized with a highly accurate reference scanner, and surface superimpositions were performed...
May 1, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28455195/a-nationwide-study-of-the-extent-and-factors-associated-with-fentanyl-use-in-australia
#13
Natasa Gisev, Briony Larance, Elena Cama, Suzanne Nielsen, Amanda Roxburgh, Raimondo Bruno, Louisa Degenhardt
OBJECTIVE: To examine fentanyl utilisation in the Australian community and determine the geographic and socio-demographic factors associated with higher rates of fentanyl utilisation. METHODS: National sales data (supplied by IMS Health) were used to estimate fentanyl utilisation (in pack sales and milligrams) in Australia during 2013, mapped to Australian Bureau of Statistics (ABS) Statistical Local Areas (SLAs) and Remoteness Areas. Socio-demographic characteristics and total population estimates of SLAs were obtained from the ABS...
April 15, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/28448741/chromophore-attachment-to-fusion-protein-of-streptavidin-and-recombinant-allophycocyanin-alpha-subunit
#14
Jing Wu, Huaxin Chen, Peng Jiang
The fusion protein (SLA) of streptavidin and allophycocyanin alpha subunit (holo-ApcA) was biosynthesized in Escherichia coli by a dual plasmid system. The recombinant SLA, purified by affinity chromatography, showed spectral properties similar to natural allophycocyanin alpha subunit (ApcA). Spectral and Zinc staining analysis indicated that the recombinant SLA covalently bound phycocyanobilin (PCB). To improve chromophorylation rate of recombinant SLA, an in vitro chromophore attachment reaction system was established, which contained partially chromophylated SLA, PCB and lyase CpcS...
April 27, 2017: Bioengineered
https://www.readbyqxmd.com/read/28426412/fatal-aelurostrongylosis-in-a-kitten-in-serbia
#15
Pavle Gavrilović, Milijan Jovanović, Aleksandra Gavrilović, Slađan Nešić
This paper describes a case of aelurostrongylosis in a four-month old female domestic cat (Felis catus) from South Banat, Serbia. The kitten that had died suddenly without signs of illness was autopsied in the Veterinary Specialised Institute "Pančevo". The macroscopic finding was typical of granulomatous pneumonia and subsequently, histopathology revealed verminous pneumonia. Based on the parasite morphology, it was confirmed that the lung lesions were caused by Aelurostrongylus abstrusus. The present finding contributes to the knowledge of the prevalence of this underestimated parasite in the Balkan Peninsula...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28419347/evolutionary-trade-offs-between-drought-resistance-mechanisms-across-a-precipitation-gradient-in-a-seasonally-dry-tropical-oak-quercus-oleoides
#16
Jose A Ramírez-Valiente, Jeannine Cavender-Bares
In seasonally dry tropical forest regions, drought avoidance during the dry season coupled with high assimilation rates in the wet season is hypothesized to be an advantageous strategy for forest trees in regions with severe and long dry seasons. In contrast, where dry seasons are milder, drought tolerance coupled with a conservative resource-use strategy is expected to maximize carbon assimilation throughout the year. Tests of this hypothesis, particularly at the intraspecific level, have been seldom conducted...
April 13, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28415417/porous-45s5-bioglass%C3%A2-based-scaffolds-using-stereolithography-effect-of-partial-pre-sintering-on-structural-and-mechanical-properties-of-scaffolds
#17
Boonlom Thavornyutikarn, Passakorn Tesavibul, Kriskrai Sitthiseripratip, Nattapon Chatarapanich, Bryce Feltis, Paul F A Wright, Terence W Turney
Scaffolds made from 45S5 Bioglass® ceramic (BG) show clinical potential in bone regeneration due to their excellent bioactivity and ability to bond to natural bone tissue. However, porous BG scaffolds are limited by their mechanical integrity and by the substantial volume contractions occurring upon sintering. This study examines stereolithographic (SLA) methods to fabricate mechanically robust and porous Bioglass®-based ceramic scaffolds, with regular and interconnected pore networks and using various computer-aided design architectures...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28406036/participatory-assessment-of-factors-influencing-nutrition-and-livelihoods-in-rural-ethiopia-implications-for-measuring-impacts-of-multisector-nutrition-programs
#18
H A Busse, W Jogo, M Fofanah, H Tesfay, M Hadush, E Kiflom, S Schulz
Agricultural interventions more effectively improve nutrition when they are adapted to local contexts and engage multiple sectors. However, evidence is limited for how to design and measure the impacts of such interventions. We piloted a participatory methodology to collect community feedback to inform the design and selection of measures for a multisector nutrition intervention in Ethiopia. Study participants were purposively recruited from 6 rural districts in Tigray and the Southern Nations, Nationalities, and Peoples' regions...
January 1, 2017: Food and Nutrition Bulletin
https://www.readbyqxmd.com/read/28400215/levamisole-enhances-the-innate-immune-response-and-prevents-increased-cortisol-levels-in-stressed-pacu-piaractus-mesopotamicus
#19
Eduardo Pahor-Filho, Adriana Soliris Corredor Castillo, Nycolas Levy Pereira, Fabiana Pilarski, Elisabeth Criscuolo Urbinati
We analyzed the effects of levamisole on stress and the innate immune responses of pacu (Piaractus mesopotamicus). A total of 300 fish (180 ± 1.27 g) were fed a diet containing levamisole hydrochloride (LHC) for 15 days, then distributed into the following groups: T0 (control group); T1 (100), T2 (150), T3 (300) and T4 (500) mg kg(-1) LHC (15 fish per group and four replicates per treatment). After this, fish (n = 8 per treatment) were exposed to air for three minutes to simulate stress conditions and were then challenged with the bacterium Aeromonas hydrophila to stimulate the immune system...
April 8, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28400159/nanotubular-topography-enhances-the-bioactivity-of-titanium-implants
#20
Jingyan Huang, Xinchun Zhang, Wangxiang Yan, Zhipei Chen, Xintao Shuai, Anxun Wang, Yan Wang
Surface modification on titanium implants plays an important role in promoting mesenchymal stem cell (MSC) response to enhance osseointegration persistently. In this study, nano-scale TiO2 nanotube topography (TNT), micro-scale sand blasted-acid etched topography (SLA), and hybrid sand blasted-acid etched/nanotube topography (SLA/TNT) were fabricated on the surfaces of titanium implants. Although the initial cell adherence at 60 min among TNT, SLA and TNT/SLA was not different, SLA and SLA/TNT presented to be rougher and suppressed the proliferation of MSC...
April 8, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
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