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https://www.readbyqxmd.com/read/28343352/the-role-of-hypofractionated-radiotherapy-in-prostate-cancer
#1
REVIEW
Linus C Benjamin, Alison C Tree, David P Dearnaley
PURPOSE OF REVIEW: It is now accepted that prostate cancer has a low alpha/beta ratio, establishing a strong basis for hypofractionation of prostate radiotherapy. This review focuses on the rationale for hypofractionation and presents the evidence base for establishing moderate hypofractionation for localised disease as the new standard of care. The emerging evidence for extreme hypofractionation in managing localized and oligometastatic prostate cancer is reviewed. RECENT FINDINGS: The 5-year efficacy and toxicity outcomes from four phase III studies have been published within the last 12 months...
April 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28343248/uncovering-specific-changes-in-network-wiring-underlying-the-primate-cerebrotype
#2
Salah Hamodeh, Ayse Bozkurt, Haian Mao, Fahad Sultan
Regular scaling of brain networks during evolution has been proposed to be the major process leading to enlarged brains. Alternative views, however, suggest that deviations from regular scaling were crucial to the evolution of the primate brain and the emergence of different cerebrotypes. Here, we examined the scaling within the major link between the cerebellum and the cerebral cortex by studying the deep cerebellar nuclei (DCN). We compared the major axonal and dendritic wiring in the DCN of rodents and monkeys in search of regular scaling...
March 25, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28343121/phylogeny-and-systematics-of-leptomyxid-amoebae-amoebozoa-tubulinea-leptomyxida
#3
Alexey Smirnov, Elena Nassonova, Stefan Geisen, Michael Bonkowski, Alexander Kudryavtsev, Cedric Berney, Anna Glotova, Natalya Bondarenko, Iva Dyková, Martin Mrva, Jose Fahrni, Jan Pawlowski
We describe four new species of Flabellula, Leptomyxa and Rhizamoeba and publish new SSU rRNA gene and actin gene sequences of leptomyxids. Using these data we provide the most comprehensive SSU phylogeny of leptomyxids to date. Based on the analyses of morphological data and results of the SSU rRNA gene phylogeny we suggest changes in the systematics of the order Leptomyxida (Amoebozoa: Lobosa: Tubulinea). We propose to merge the genera Flabellula and Paraflabellula (the genus Flabellula remains valid by priority rule)...
October 26, 2016: Protist
https://www.readbyqxmd.com/read/28343100/the-potential-of-l-%C3%A2-scoparium-k-%C3%A2-robusta-and-p-%C3%A2-radiata-to-mitigate-n-losses-in-silvopastural-systems
#4
J Esperschuetz, N Balaine, T Clough, S Bulman, N M Dickinson, J Horswell, B H Robinson
Silvopastoral systems aim to enhance economic, cultural and social principles by sustainably combining forest management with agriculture. In these typically high-nitrogen (N) environments, plant species selection can profoundly influence N fluxes. For grazed pastures, plants may be exposed to urine patches that have received the equivalent of up to 1000 kg N ha(-1). We aimed to determine the growth and N fluxes in three potential trees that may be used in silvopastoral systems: L. scoparium, K. robusta and P...
March 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28343036/behaviour-of-137-cs-in-forest-humus-detected-across-the-territory-of-the-czech-republic
#5
Jan Škrkal, Helena Pilátová, Petr Rulík, Ivan Suchara, Julie Sucharová, Marie Holá
The activity concentration of (137)Cs in samples of coniferous forest humus collected across the territory of the Czech Republic in 1995 and 2005 was analysed, and it was found significantly correlated with the surface deposition caused by the Chernobyl accident. The effective (12.8 y) and environmental (22.3 y) half-lives of radiocaesium in humus were calculated and compared with those in spruce bark. The impact of important forest stand factors, that is, precipitation, content of organic matter, age of trees and pH, on the behaviour of (137)Cs in humus was studied...
March 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28343024/sex-estimation-with-the-total-area-of-the-proximal-femur-a-densitometric-approach
#6
Francisco Curate, Anabela Albuquerque, Izilda Ferreira, Eugénia Cunha
The estimation of sex is a central step to establish the biological profile of an anonymous skeletal individual. Imaging techniques, including bone densitometry, have been used to evaluate sex in remains incompletely skeletonized. In this paper, we present a technique for sex estimation using the total area (TA) of the proximal femur, a two-dimensional areal measurement determined through densitometry. TA was acquired from a training sample (112 females; 112 males) from the Coimbra Identified Skeletal Collection (University of Coimbra, Portugal)...
March 8, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28342946/negait-a-new-parser-for-medical-text-simplification-using-morphological-sentential-and-double-negation
#7
Partha Mukherjee, Gondy Leroy, David Kauchak, Srinidhi Rajanarayanan, Damian Y Romero Diaz, Nicole P Yuan, T Gail Pritchard, Sonia Colina
Many different text features influence text readability and content comprehension. Negation is commonly suggested as one such feature, but few general-purpose tools exist to discover negation and studies of the impact of negation on text readability are rare. In this paper, we introduce a new negation parser (NegAIT) for detecting morphological, sentential, and double negation. We evaluated the parser using a human annotated gold standard containing 500 Wikipedia sentences and achieved 95%, 89% and 67% precision with 100%, 80%, and 67% recall, respectively...
March 22, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28342350/challenges-for-tree-officers-to-enhance-the-provision-of-regulating-ecosystem-services-from-urban-forests
#8
Helen J Davies, Kieron J Doick, Malcolm D Hudson, Kate Schreckenberg
Urbanisation and a changing climate are leading to more frequent and severe flood, heat and air pollution episodes in Britain's cities. Interest in nature-based solutions to these urban problems is growing, with urban forests potentially able to provide a range of regulating ecosystem services such as stormwater attenuation, heat amelioration and air purification. The extent to which these benefits are realized is largely dependent on urban forest management objectives, the availability of funding, and the understanding of ecosystem service concepts within local governments, the primary delivery agents of urban forests...
March 21, 2017: Environmental Research
https://www.readbyqxmd.com/read/28342343/plant-uptake-of-238-u-235-u-232-th-226-ra-210-pb-and-40-k-from-a-coal-ash-and-slag-disposal-site-and-control-soil-under-field-conditions-a-preliminary-study
#9
Božena Skoko, Gordana Marović, Dinko Babić, Marko Šoštarić, Mirela Jukić
The aim of this study was to investigate the uptake of (238)U, (235)U, (232)Th, (226)Ra, (210)Pb and (40)K by plants that grow on a coal ash and slag disposal site known for its higher content of naturally occurring radionuclides. Plant species that were sampled are common for the Mediterranean flora and can be divided as follows: grasses & herbs, shrubs and trees. To compare the activity concentrations and the resultant concentration ratios of the disposal site with those in natural conditions, we used control data specific for the research area, obtained for plants growing on untreated natural soil...
March 22, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28340479/additive-effects-prevail-the-response-of-biota-to-multiple-stressors-in-an-intensively-monitored-watershed
#10
Alexander Gieswein, Daniel Hering, Christian K Feld
Freshwater ecosystems are impacted by a range of stressors arising from diverse human-caused land and water uses. Identifying the relative importance of single stressors and understanding how multiple stressors interact and jointly affect biology is crucial for River Basin Management. This study addressed multiple human-induced stressors and their effects on the aquatic flora and fauna based on data from standard WFD monitoring schemes. For altogether 1095 sites within a mountainous catchment, we used 12 stressor variables covering three different stressor groups: riparian land use, physical habitat quality and nutrient enrichment...
March 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28340263/myrciaria-dubia-an-amazonian-fruit-population-structure-and-its-implications-for-germplasm-conservation-and-genetic-improvement
#11
C F Nunes, T A Setotaw, M Pasqual, E A Chagas, E G Santos, D N Santos, C G B Lima, G M A Cançado
Myrciaria dubia (camu-camu) is an Amazon tree that produces a tart fruit with high vitamin C content. It is probably the fruit with the highest vitamin C content among all Brazilian fruit crops and it can be used to supplement daily vitamin C dose. This property has attracted the attention of consumers and, consequently, encouraged fruit farmers to produce it. In order to identify and select potential accessions for commercial exploitation and breeding programs, M. dubia has received considerable research attention...
March 22, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28339832/effects-of-feeding-original-xpc%C3%A2-to-broilers-with-a-live-coccidiosis-vaccine-under-industrial-conditions-part-2-cecal-microbiota-analysis
#12
S H Park, S Roto, H Pavlidis, D McIntyre, K Striplin, L Brammer, S C Ricke
Biological supplements in poultry feed are of continued interest due to the improvements in growth performance, protection from pathogen invasion, and benefits in overall host health. The fermentation metabolites of Diamond V Original XPC™ (XPC) have previously been shown to improve commercial performance and reduce Salmonella in poultry. The current study sought to characterize the cecal microbiota using culture-independent analysis based on 16S rRNA gene in Coccivac-D sprayed broilers supplemented with XPC and/or Salinomycin (SAL)...
March 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339691/z-guggulsterone-produces-antidepressant-like-effects-in-mice-through-activation-of-the-bdnf-signaling-pathway
#13
Chao Huang, Wen-Feng Hu, Ji-Li Wang, Peng Wang, Yu Gong, Li-Juan Tong, Bo Jiang, Wei Zhang, Yi-Bin Qin, Zhuo Chen, Rong-Rong Yang
Background: Z-guggulsterone, an active compound extracted from the gum resin of the tree commiphora mukul, has been shown to improve animal memory deficits via activating the brain-derived neurotrophic factor (BDNF) signaling pathway. Here, we investigated the antidepressant-like effect of Z-guggulsterone in a chronic unpredictable stress (CUS) mouse model of depression. Methods: The effects of Z-guggulsterone were assessed in mice tail suspension test (TST), forced swimming test (FST)...
February 21, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28339461/mass-elevation-and-lee-effects-markedly-lift-the-elevational-distribution-of-ground-beetles-in-the-himalaya-tibet-orogen
#14
Joachim Schmidt, Jürgen Böhner, Roland Brandl, Lars Opgenoorth
Mass elevation and lee effects markedly influence snow lines and tree lines in high mountain systems. However, their impact on other phenomena or groups of organisms has not yet been quantified. Here we quantitatively studied their influence in the Himalaya-Tibet orogen on the distribution of ground beetles as model organisms, specifically whether the ground beetle distribution increases from the outer to the inner parts of the orogen, against latitudinal effects. We also tested whether July temperature and solar radiation are predictors of the beetle's elevational distribution ranges...
2017: PloS One
https://www.readbyqxmd.com/read/28338992/identification-of-the-eucalyptus-grandis-chitinase-gene-family-and-expression-characterization-under-different-biotic-stress-challenges
#15
Peri A Tobias, Nanette Christie, Sanushka Naidoo, David I Guest, Carsten Külheim
Eucalyptus grandis (W. Hill ex Maiden) is an Australian Myrtaceae tree grown for timber in many parts of the world and for which the annotated genome sequence is available. Known to be susceptible to a number of pests and diseases, E. grandis is a useful study organism for investigating defense responses in woody plants. Chitinases are widespread in plants and cleave glycosidic bonds of chitin, the major structural component of fungal cell walls and arthropod exoskeletons. They are encoded by an important class of genes known to be up-regulated in plants in response to pathogens...
March 13, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338989/a-simple-stable-carbon-isotope-method-for-investigating-changes-in-the-use-of-recent-versus-old-carbon-in-oak
#16
Danny McCarroll, Matthew Whitney, Giles H F Young, Neil J Loader, Mary H Gagen
Stable carbon isotope ratios from early-wood (EW) and late-wood (LW) are used to test competing models of carbon storage and allocation, providing a cost-effective alternative to measuring and dating non-structural carbohydrates in mature temperate broad-leaf forest trees growing under natural conditions. Annual samples of EW and LW from seven mature oaks (Quercus robur L.) from Scotland, covering AD 1924-2012, were pooled, treated to isolate alpha-cellulose and pyrolysed to measure the carbon isotope ratios...
March 18, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338978/isotope-signals-and-anatomical-features-in-tree-rings-suggest-a-role-for-hydraulic-strategies-in-diffuse-drought-induced-die-back-of-pinus-nigra
#17
Laura Petrucco, Andrea Nardini, Georg von Arx, Matthias Saurer, Paolo Cherubini
The 2003 and 2012 summer seasons were among the warmest and driest of the last 200 years over southeastern Europe, and in particular in the Karst region (northeastern Italy). Starting from winter-spring 2013, several black pines (Pinus nigra J.F. Arnold) suffered crown die-back. Declining trees occurred nearby individuals with no signs of die-back, raising hypotheses about the occurrence of individual-specific hydraulic strategies underlying different responses to extreme drought. We investigated possible processes driving black pine decline by dendrochronological and wood anatomical measurements, coupled with analysis of tree-ring carbon (δ13C) and oxygen (δ18O) isotopic composition in healthy trees (H) and trees suffering die-back (D)...
March 17, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338976/synchronisms-between-bud-and-cambium-phenology-in-black-spruce-early-flushing-provenances-exhibit-early-xylem-formation
#18
Magali Perrin, Sergio Rossi, Nathalie Isabel
Bud and cambial phenology represent the adaptation of species to the local environment that allows the growing season to be maximized while minimizing the risk of frost for the developing tissues. The temporal relationship between the apical and radial meristems can help in the understanding of tree growth as a whole process. The aim of this study was to compare cambial phenology in black spruce (Picea mariana (Mill.) B.S.P.) provenances classified as early and late bud flushing. The different phases of cambial phenology were assessed on wood microcores sampled weekly from April to October in 2014 and 2015 from 61 trees growing in a provenance trial in Quebec, Canada...
March 3, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338975/drought-and-reproductive-effort-interact-to-control-growth-of-a-temperate-broadleaved-tree-species-fagus-sylvatica
#19
Andrew J Hacket-Pain, Jonathan G A Lageard, Peter A Thomas
Interannual variation in radial growth is influenced by a range of physiological processes, including variation in annual reproductive effort, although the importance of reproductive allocation has rarely been quantified. In this study, we use long stand-level records of annual seed production, radial growth (tree ring width) and meteorological conditions to analyse the relative importance of summer drought and reproductive effort in controlling the growth of Fagus sylvatica L., a typical masting species. We show that both summer drought and reproductive effort (masting) influenced growth...
March 17, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338970/woody-plant-ecosystems-under-climate-change-and-air-pollution-response-consistencies-across-zonobiomes
#20
R Matyssek, A R Kozovits, G Wieser, J King, H Rennenberg
Forests store the largest terrestrial pools of carbon (C), helping to stabilize the global climate system, yet are threatened by climate change (CC) and associated air pollution (AP, highlighting ozone (O3) and nitrogen oxides (NOx)). We adopt the perspective that CC-AP drivers and physiological impacts are universal, resulting in consistent stress responses of forest ecosystems across zonobiomes. Evidence supporting this viewpoint is presented from the literature on ecosystem gross/net primary productivity and water cycling...
March 14, 2017: Tree Physiology
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