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Javier Martinez-Picado, Paul J McLaren, Amalio Telenti, Nuria Izquierdo-Useros
Myeloid cells initiate immune responses and are crucial to control infections. In the case of retroviruses, however, myeloid cells also promote pathogenesis by enabling viral dissemination; a process extensively studied in vitro using human immunodeficiency virus type 1 (HIV-1). This viral hijacking mechanism does not rely on productive myeloid cell infection but requires HIV-1 capture via Siglec-1/CD169, a receptor expressed on myeloid cells that facilitates the infection of bystander target cells. Murine retroviruses are also recognized by Siglec-1, and this interaction is required for robust retroviral infection in vivo...
2017: Frontiers in Immunology
Rui Diogo
I focus on the crucial links between the discovery of nonhuman primates by Westerners, discussions on our place in nature, the chain of being, racism, and the history of primate comparative anatomy and of so-called "anatomical human racial studies." Strikingly, for more than a millennium humans knew more about the internal anatomy of a single monkey species than about that of their own bodies. This is because Galen used monkeys to infer human anatomy, in line with the human-animal continuity implied by the Greek notion of scala naturae...
December 1, 2017: Journal of Morphology
Francesco Cerasoli, Mattia Iannella, Paola D'Alessandro, Maurizio Biondi
Boosted Regression Trees (BRT) is one of the modelling techniques most recently applied to biodiversity conservation and it can be implemented with presence-only data through the generation of artificial absences (pseudo-absences). In this paper, three pseudo-absences generation techniques are compared, namely the generation of pseudo-absences within target-group background (TGB), testing both the weighted (WTGB) and unweighted (UTGB) scheme, and the generation at random (RDM), evaluating their performance and applicability in distribution modelling and species conservation...
2017: PloS One
Marianna Biró, János Bölöni, Zsolt Molnár
Habitat loss is a key driver of biodiversity loss. However, hardly any long-term time series analyses of habitat loss are available above the local scale for finer-level habitat categories. In this paper we analyse, from a long-term perspective, the habitat specificity of habitat area loss, the change in trends since the fall of communism and the impact of protected areas on habitat loss. We studied twenty semi-natural habitat types in 5000 randomly selected localities over seven time periods between 1783 and 2013, using historical maps, archival and recent aerial/satellite imagery, botanical descriptions and field data...
October 26, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
Caterina Spiezio, Carola Leonardi, Barbara Regaiolli
Tortoises perceive different colours and rely on the visual system to find food. However, few studies have considered colour preference in tortoises, especially in land species. The aim of this study is to investigate whether Aldabra giant tortoises (Geochelone gigantea) housed in Parco Natura Viva (VR), an Italian zoological garden, show a specific colour preference in their social context. The study was divided into two different periods in which red and yellow balls of the same size were scattered around in the outdoor enclosure...
October 12, 2017: Behavioural Processes
Matheus Bertanha, Marcone Lima Sobreira, Ana Lívia de Carvalho Bovolato, Jaqueline de Carvalho Rinaldi, Patricia Pintor Reis, Andrei Moroz, Leonardo Nazario de Moraes, Elenice Deffune
PURPOSE: To investigate the ultrastructural characteristics and analysis of residual DNA in scaffold models, produced with decellularized vena cava in an experimental model with rabbits. METHODS: Three groups were created for ultrastructural and residual DNA analysis: group 1 - control, consisting of samples of vena cava in natura; group 2 - SD, consisting of vein fragments submitted to 2% sodium deoxycholate decellularization by shaking (160rpm - Shaker News Brunswick Scientific®) for 1 hour at controlled temperature shaker at 37°C; group 3 - SDS, consisting of vein fragments submitted to 1% sodium dodecyl sulfate decellularization under the same previous condition, for 2 hours...
September 2017: Acta Cirúrgica Brasileira
Juliane Geyer, Stefan Kreft, Florian Jeltsch, Pierre L Ibisch
Protected areas are arguably the most important instrument of biodiversity conservation. To keep them fit under climate change, their management needs to be adapted to address related direct and indirect changes. In our study we focus on the adaptation of conservation management planning, evaluating management plans of 60 protected areas throughout Germany with regard to their climate change-robustness. First, climate change-robust conservation management was defined using 11 principles and 44 criteria, which followed an approach similar to sustainability standards...
2017: PloS One
Agata Bartkowiak, Joanna Lemanowicz, Piotr Hulisz
This paper aimed to evaluate the ecological risk posed by the accumulation of heavy metals in the salt-affected soils of the habitat covered by the EU Natura 2000 program in relation to the activity of soil redox enzymes. The research was carried out in the halophyte reserve in Ciechocinek (north-central Poland) which is a very specific habitat as it undergoes a long-term human impact related to both the operation of the medical spa town and the agricultural use of soils in the adjacent areas. The obtained results showed that the content of Zn, Cu, Pb, and Cd in the studied soils exceeded the Polish standards...
September 30, 2017: Environmental Science and Pollution Research International
Bruna M A Bento, Andressa da C Moreira, Ariene S do Carmo, Luana C Dos Santos, Paula M Horta
OBJECTIVE: To compare the participation of food groups - fresh and minimally processed, processed, and ultra-processed - in the diet of students (n=1357) from Belo Horizonte, MG, Brazil, in accordance with the number of school meals consumed daily. METHODS: Four groups were defined: children that did not consume school meals and children that consumed one, two, or three school meals daily. Food groups participation, in g/1000kcal, was obtained using two 24-hour recalls...
September 26, 2017: Jornal de Pediatria
Maysa Formigoni, Paula Gimenez Milani, Alexandre da Silva Avíncola, Vanessa Jorge Dos Santos, Livia Benossi, Antônio Sergio Dacome, Eduardo Jorge Pilau, Silvio Claudio da Costa
Leaves of a new variety of Stevia rebaudiana with a high content of rebaudioside A were pretreated with ethanol. The ethanolic extract showed high antioxidant potential and 39 compounds were identified, by UPLC/HRMS, among them one not yet mentioned in the literature for stevia leaves. From the in natura leaves and pretreated leaves, the conditions of aqueous extraction of steviol glycosides were investigated using response surface methodology. The aqueous extracts obtained were purified by ion exchange chromatography techniques and membrane separation methods...
February 15, 2018: Food Chemistry
Viorel D Popescu, Ruben Iosif, Mihai I Pop, Silviu Chiriac, George Bouroș, Brett J Furnas
Accurate population size estimates are important information for sustainable wildlife management. The Romanian Carpathians harbor the largest brown bear (Ursus arctos) population in Europe, yet current management relies on estimates of density that lack statistical oversight and ignore uncertainty deriving from track surveys. In this study, we investigate an alternative approach to estimate brown bear density using sign surveys along transects within a novel integration of occupancy models and home range methods...
September 2017: Ecology and Evolution
Eszter Kovács, Eszter Kelemen, Gabriella Kiss, Ágnes Kalóczkai, Veronika Fabók, Barbara Mihók, Boldizsár Megyesi, György Pataki, Barbara Bodorkós, Bálint Balázs, Györgyi Bela, Katalin Margóczi, Ágnes Roboz, Dániel Molnár
Stakeholder participation in nature conservation policies and especially in the management of protected areas has gained importance in the last decades. These changes are underlined by democratic principles and the perceived contribution of stakeholder involvement to the effectiveness of conservation management. Evaluating participatory processes is essential to learn about the past and thus increase the quality of future processes. The evaluation can be useful for the organisations responsible for planning and management, stakeholders and policy makers as well...
December 15, 2017: Journal of Environmental Management
Tom A Diserens, Tomasz Borowik, Sabina Nowak, Maciej Szewczyk, Natalia Niedźwiecka, Robert W Mysłajek
If protected areas are to remain relevant in our dynamic world they must be adapted to changes in species ranges. In the EU one of the most notable such changes is the recent recovery of large carnivores, which are protected by Natura 2000 at the national and population levels. However, the Natura 2000 network was designed prior to their recent recovery, which raises the question whether the network is sufficient to protect the contemporary ranges of large carnivores. To investigate this question we evaluated Natura 2000 coverage of the three wolf Canis lupus populations in Poland...
2017: PloS One
Matthias Ebbinghaus, Gabriel Natura, Gisela Segond von Banchet, Susanne Hensellek, Martin Böttcher, Birgit Hoffmann, Firas Subhi Salah, Mieczyslaw Gajda, Thomas Kamradt, Hans-Georg Schaible
Interleukin-17A (IL-17A) is considered an important pro-inflammatory cytokine but its importance in joint diseases such as rheumatoid arthritis (RA) is unclear. It has also been reported that IL-17A may induce pain but it is unclear whether pro-inflammatory and pro-nociceptive effects are linked. Here we studied in wild type (WT) and IL-17A knockout (IL-17AKO) mice inflammation and hyperalgesia in antigen-induced arthritis (AIA). We found that the severity and time course of AIA were indistinguishable in WT and IL-17AKO mice...
September 4, 2017: Scientific Reports
Pedro Esteves Duarte Augusto, Alberto Claudio Miano, Meliza Lindsay Rojas
Biological materials are characterized by complex structures and compositions, leading to viscoelastic behaviour. Their viscoelastic characterization is important for the evaluation, design and optimization of processes to ensure high quality products. Proposals of methodologies of analysis and modelling are critical steps in studying the rheological properties of these materials. In this context, a new model, the Guo-Campanella Model, was recently proposed to describe the stress-relaxation behaviour of biological material...
August 24, 2017: Journal of Texture Studies
A S Kallimanis, M Panitsa, P Dimopoulos
EU biodiversity conservation policy is based on the Habitats Directive (92/43/EC), which aims that habitat types and species of Community interest should reach 'favourable conservation status'. To this end, Member States are obliged to perform periodic assessment of species and habitat conservation status through biodiversity monitoring, which, in almost all cases, was performed by experts implementing standardized field protocols. Here, we examine the quality of data collected in the field by non-experts (citizen scientists) for the conservation status assessment of habitat types, and specifically for the criteria 'typical species', 'specific structures and functions', and 'pressures and threats'...
August 21, 2017: Scientific Reports
Lara Rodrigues Schneider, Daniela Coelho Dos Santos, Angela Diniz Campos, Rafael Guerra Lund
The Butia sp. are native South America trees, whose fruits are consumed in natura and have significant biological properties; however, trees of this genus plant are in danger of extinction. A systematic review of the literature and a technological overview were carried out to summarize the available evidence on the therapeutic uses and the phytochemical compounds of Butia sp. The following electronic databases were researched: MedLine (PubMed), Web of Science, Scopus, Scielo, and the gray literature. Furthermore, the online system such as the US Patent and Trademark Office, Espacenet, National Institute of Industrial Property, and Google Patents were accessed to obtain patent data...
August 15, 2017: Phytotherapy Research: PTR
Nárgella S Carneiro, Cassia C F Alves, José M Alves, Mariana B Egea, Carlos H G Martins, Thayná S Silva, Lizandra C Bretanha, Maira P Balleste, Gustavo A Micke, Eduardo V Silveira, Mayker L D Miranda
Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal bacteria and antioxidant properties. Eugenia klotzschiana Berg (pêra-do-cerrado, in Portuguese) is a species of Myrtaceae with restricted distribution in the Cerrado. The essential oils were extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and chemically characterized by GC-MS. The major compounds were α-copaene (10.6 %) found in oil from leaves in natura, β-bisabolene (17...
July 2017: Anais da Academia Brasileira de Ciências
Belinda Gallardo, David C Aldridge, Pablo González-Moreno, Jan Pergl, Manuel Pizarro, Petr Pyšek, Wilfried Thuiller, Christopher Yesson, Montserrat Vilà
Protected areas (PAs) are intended to provide native biodiversity and habitats with a refuge against the impacts of global change, particularly acting as natural filters against biological invasions. In practice, however, it is unknown how effective PAs will be in shielding native species from invasions under projected climate change. Here, we investigate the current and future potential distributions of 100 of the most invasive terrestrial, freshwater, and marine species in Europe. We use this information to evaluate the combined threat posed by climate change and invasions to existing PAs and the most susceptible species they shelter...
July 31, 2017: Global Change Biology
Adrián Regos, Luis Tapia, Alberto Gil-Carrera, Jesús Domínguez
Monitoring protected areas (PAs) is essential for systematic evaluation of their effectiveness in terms of habitat protection, preservation and representativeness. This study illustrates how the use of species distribution models that combine remote sensing data and information about biodiversity surrogates can contribute to develop a systematic protocol for monitoring PAs. In particular, we assessed the effectiveness of the Natura 2000 (N2000) network, for conserving and preserving the representativeness of seven raptor species in a highly-dynamic landscape in northwest Spain between 2001 and 2014...
2017: PloS One
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