keyword
MENU ▼
Read by QxMD icon Read
search

Biomed

keyword
https://www.readbyqxmd.com/read/28817630/pet-snakes-illegally-marketed-in-brazil-climatic-viability-and-establishment-risk
#1
Érica Fonseca, Mirco Solé, Dennis Rödder, Paulo de Marco
Invasive species are one among many threats to biodiversity. Brazil has been spared, generically, of several destructive invasive species. Reports of invasive snakes' populations are nonexistent, but the illegal pet trade might change this scenario. Despite the Brazilian laws forbid to import most animals, illegal trade is frequently observed and propagules are found in the wild. The high species richness within Brazilian biomes and accelerated fragmentation of natural reserves are a critical factors facilitating successful invasion...
2017: PloS One
https://www.readbyqxmd.com/read/28813101/forage-potential-of-native-ecotypes-of-paspalum-notatum-and-p-guenoarum
#2
Marcelo G Steiner, Miguel Dall'agnol, Carlos Nabinger, Simone M Scheffer-Basso, Roberto L Weiler, Carine Simioni, Maria Teresa Schifino-Wittmann, Éder A M DA Motta
The Paspalum genus includes several species that are important for livestock in Rio Grande do Sul, such as P. notatum and P. guenoarum, typical of native pastures of the Pampa biome. The aim of this study was to investigate forage production and chemical composition of four ecotypes of these species in relation to the cv. 'Pensacola' (P. notatum). Ecotypes of P. guenoarum (Azulão and Baio) and P. notatum (André da Rocha and Bagual) and the cv. 'Pensacola' were evaluated for two years, during which four cuts/year were made...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28813097/avian-communities-in-the-amazonian-cangas-vegetation-biogeographic-affinities-components-of-beta-diversity-and-conservation
#3
Sérgio H Borges, Marcos P D Santos, Leonardo M S Soares, Antonita S DA Silva
The Amazonian cangas is a vegetation type distributed as patches of open vegetation embedded in a matrix of tropical forest and that grows over iron-rich soils in the Serra dos Carajás region. To characterize cangas avifauna, we surveyed birds in eight patches varying from 43 to 1,366 hectares. Cangas avifauna has compositional affinities with savannas widespread throughout the Amazon and other biomes, and we estimate that more than 200 bird species occurs in this habitat. Species composition was relatively homogeneous, and the similarity among cangas patches was the dominant component of the beta-diversity...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28812737/human-exposure-and-sensitivity-to-globally-extreme-wildfire-events
#4
David M J S Bowman, Grant J Williamson, John T Abatzoglou, Crystal A Kolden, Mark A Cochrane, Alistair M S Smith
Extreme wildfires have substantial economic, social and environmental impacts, but there is uncertainty whether such events are inevitable features of the Earth's fire ecology or a legacy of poor management and planning. We identify 478 extreme wildfire events defined as the daily clusters of fire radiative power from MODIS, within a global 10 × 10 km lattice, between 2002 and 2013, which exceeded the 99.997th percentile of over 23 million cases of the ΣFRP 100 km(-2) in the MODIS record. These events are globally distributed across all flammable biomes, and are strongly associated with extreme fire weather conditions...
February 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28807338/molecular-pathology-diagnosis-of-diffuse-large-b-cell-lymphoma-using-biomed-2-clonal-gene-rearrangements
#5
Saeid Ghorbian
BACKGROUND: Clonality testing for immunoglobulin gene rearrangement analysis could be implemented effectively as a useful technique for conventional diagnosis of lymphoma. The European Biomedicine and Health Concerted Action Project BMH4-CT98-3936 (BIOMED-2) have been suggested a gold standard method to clonality detection. OBJECTIVES: We tested empirically clonality rearrangements of IGH and incomplete IGH D-J, on formalin-fixed, paraffin embedded (FFPE) tissue of patients with diffuse large B cell lymphoma (DLBCL)...
August 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28805042/fabrication-and-characterization-of-electrospun-laminin-functionalized-silk-fibroin-poly-ethylene-oxide-nanofibrous-scaffolds-for-peripheral-nerve-regeneration
#6
Mina Rajabi, Masoumeh Firouzi, Zahra Hassannejad, Ismaeil Haririan, Payam Zahedi
The peripheral nerve regeneration is still one of the major clinical problems, which has received a great deal of attention. In this study, the electrospun silk fibroin (SF)/poly(ethylene oxide) (PEO) nanofibrous scaffolds were fabricated and functionalized their surfaces with laminin (LN) without chemical linkers for potential use in the peripheral nerve tissue engineering. The morphology, surface chemistry, thermal behavior and wettability of the scaffolds were examined to evaluate their performance by means of scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC) and water contact angle (WCA) measurements, respectively...
August 14, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28804955/3m-052-as-an-adjuvant-for-a-plga-microparticle-based-leishmania-donovani-recombinant-protein-vaccine
#7
Qian Wang, Meagan A Barry, Christopher A Seid, Elissa M Hudspeth, C Patrick McAtee, Michael J Heffernan
It is believed that an effective vaccine against leishmaniasis will require a T helper type 1 (TH 1) immune response. In this study, we investigated the adjuvanticity of the Toll-like receptor (TLR) 7/8 agonist 3M-052 in combination with the Leishmania donovani 36-kDa nucleoside hydrolase recombinant protein antigen (NH36). NH36 and 3M-052 were encapsulated in separate batches of poly(lactic-co-glycolic acid) (PLGA) microparticles (MPs). The loading efficiency for NH36 was 83% and for 3M-052 was above 95%. In vitro stimulation of bone marrow-derived dendritic cells, measured by IL-12 secretion, demonstrated that 3M-052 (free or MP-formulated) had a concentration-dependent immunostimulatory effect with an optimum concentration of 2 µg/mL...
August 14, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28804477/glaciers-and-ice-sheets-as-analog-environments-of-potentially-habitable-icy-worlds
#8
REVIEW
Eva Garcia-Lopez, Cristina Cid
Icy worlds in the solar system and beyond have attracted a remarkable attention as possible habitats for life. The current consideration about whether life exists beyond Earth is based on our knowledge of life in terrestrial cold environments. On Earth, glaciers and ice sheets have been considered uninhabited for a long time as they seemed too hostile to harbor life. However, these environments are unique biomes dominated by microbial communities which maintain active biochemical routes. Thanks to techniques such as microscopy and more recently DNA sequencing methods, a great biodiversity of prokaryote and eukaryote microorganisms have been discovered...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28796434/a-comparison-of-regression-methods-for-model-selection-in-individual-based-landscape-genetic-analysis
#9
A J Shirk, E L Landguth, S A Cushman
Anthropogenic migration barriers fragment many populations and limit the ability of species to respond to climate-induced biome shifts. Conservation actions designed to conserve habitat connectivity and mitigate barriers are needed to unite fragmented populations into larger, more viable metapopulations, and to allow species to track their climate envelope over time. Landscape genetic analysis provides an empirical means to infer landscape factors influencing gene flow, and thereby inform such conservation actions...
August 10, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/28795469/bacterial-biomes-and-potential-human-pathogens-in-irrigation-water-and-leafy-greens-from-different-production-systems-described-using-pyrosequencing
#10
M Jongman, L Chidamba, L Korsten
AIMS: To investigate the influence of irrigation water microbial quality on leafy green vegetables produced in commercial and small-scale farms as well as homestead gardens using pyrosequencing. METHODS AND RESULTS: Next generation sequencing analysis of the V1-V3 hypervariable region of bacterial 16S rDNA was used to compare bacterial diversity in irrigation water sources and on leafy vegetables. In all samples (12) analyzed, the phylum Proteobacteria (64.5%), class Gammaproteobacteria (56...
August 9, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28792664/collagen-coated-nano-electrospun-pcl-seeded-with-human-endometrial-stem-cells-for-skin-tissue-engineering-applications
#11
Shiva Sharif, Jafar Ai, Mahmoud Azami, Javad Verdi, Mohammad Ali Atlasi, Sadegh Shirian, Ali Samadikuchaksaraei
Human endometrial stem cells (hEnSCs) are known as an attractive source of stem cells for regenerative medicine. hEnSCs are easily isolated and are capable of repairing uterine through their strong ability of creating new capillaries. In this study, a three-dimensional (3D) nanofibrous polycaprolactone (PCL)/collagen scaffold was fabricated and characterized in order to be applied as a new approach for skin reconstruction. Furthermore, the behavior of hEnSCs on this scaffold was investigated. First, a PCL 3D scaffold was constructed using electrospinning technique...
August 9, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28791136/range-contractions-of-the-world-s-large-carnivores
#12
Christopher Wolf, William J Ripple
The majority of the world's terrestrial large carnivores have undergone substantial range contractions and many of these species are currently threatened with extinction. However, there has been little effort to fully quantify the extent of large carnivore range contractions, which hinders our ability to understand the roles and relative drivers of such trends. Here we present and analyse a newly constructed and comprehensive set of large carnivore range contraction maps. We reveal the extent to which ranges have contracted since historical times and identify regions and biomes where range contractions have been particularly large...
July 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28776203/adaptive-temperature-regulation-in-the-little-bird-in-winter-predictions-from-a-stochastic-dynamic-programming-model
#13
Anders Brodin, Jan-Åke Nilsson, Andreas Nord
Several species of small birds are resident in boreal forests where environmental temperatures can be -20 to -30 °C, or even lower, in winter. As winter days are short, and food is scarce, winter survival is a challenge for small endothermic animals. A bird of this size will have to gain almost 10% of its lean body mass in fat every day to sustain overnight metabolism. Birds such as parids (titmice and chickadees) can use facultative hypothermia, a process in which body temperature is actively down-regulated to a specific level, to reduce heat loss and thus save energy...
August 3, 2017: Oecologia
https://www.readbyqxmd.com/read/28771081/effect-of-exercise-on-inflammatory-profile-of-older-persons-systematic-review-and-meta-analyses
#14
Renato Sobral Monteiro Junior, Paulo de Tarso Maciel-Pinheiro, Eduardo da Matta M Portugal, Luiz Felipe da Silva Figueiredo, Rodrigo Terra, Lara S F Carneiro, Vinicius Dias Rodrigues, Osvaldo José Moreira Nascimento, Andrea Camaz Deslandes, Jerson Laks
BACKGROUND: Inflammatory cytokines and acute phase proteins increase with ageing, promoting a chronic low-grade inflammation. Studies have shown a positive effect of exercise on inflammatory markers in older persons. Interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α) and C-reactive protein (CRP) are the main biomarkers investigated. However, it is unclear if exercise could decrease all these biomarkers. PURPOSE: The aim was to analyze the effect of chronic exercise on IL-6, TNF-α and CRP levels in older persons...
August 3, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28769690/revision-of-the-genus-reinmara-schaus-1928-lepidoptera-mimallonoidea-mimallonidae-with-the-descriptions-of-four-new-species-from-south-america
#15
Ryan A St Laurent, Daniel Herbin, Carlos G C Mielke
The mimallonid genus Reinmara Schaus, 1928 is revised. The three previously described species, R. enthona (Schaus, 1905), R. minasa Schaus, 1928, and R. wolfei Herbin & C. Mielke, 2014 are redescribed and the females of each are described and figured for the first time. Additionally, we describe four new species, two Andean: R. andensissp. n. and R. occidentalissp. n., and two Brazilian: R. atlanticasp. n. and R. igneasp. n.. The new species R. ignea and R. atlantica are likely of conservation concern due to their rarity in collections and their apparent endemism to an endangered biome, the Brazilian Atlantic Forest...
2017: ZooKeys
https://www.readbyqxmd.com/read/28768216/a-multi-omics-based-ecological-analysis-of-coastal-marine-sediments-from-gladstone-in-australia-s-central-queensland-and-heron-island-a-nearby-fringing-platform-reef
#16
D J Beale, J Crosswell, A V Karpe, W Ahmed, M Williams, P D Morrison, S Metcalfe, C Staley, M J Sadowsky, E A Palombo, A D L Steven
The impact of anthropogenic factors arising from point and non-point pollution sources at a multi commodity marine port and its surrounding ecosystems were studied using sediment samples collected from a number of onshore (Gladstone Harbour and Facing Island) and offshore (Heron Island and Fitzroy Reefs) sites in Australia's Central Queensland. Sediment samples were analyzed for trace metals, organic carbon, polycyclic aromatic hydrocarbons (PAH), emerging chemicals of concern (ECC) and sterols. Similarly, the biological and biochemical interaction between the reef and its environment was analyzed by the multi-omic tools of next-generation sequencing characterization of the bacterial community and microbial community metabolic profiling...
July 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28767103/aflp-diversity-and-spatial-structure-of-calycophyllum-candidissimum-rubiaceae-a-dominant-tree-species-of-nicaragua-s-critically-endangered-seasonally-dry-forest
#17
A Dávila-Lara, M Affenzeller, A Tribsch, V Díaz, H P Comes
The Central American seasonally dry tropical (SDT) forest biome is one of the worlds' most endangered ecosystems, yet little is known about the genetic consequences of its recent fragmentation. A prominent constituent of this biome is Calycophyllum candidissimum, an insect-pollinated and wind-dispersed canopy tree of high socio-economic importance, particularly in Nicaragua. Here, we surveyed amplified fragment length polymorphisms across 13 populations of this species in Nicaragua to elucidate the relative roles of contemporary vs historical factors in shaping its genetic variation...
August 2, 2017: Heredity
https://www.readbyqxmd.com/read/28766903/multimodal-analysis-of-in-vivo-resorbable-cap-bone-substitutes-by-combining-histology-sem-and-microcomputed-tomography-data
#18
Ahmed Sweedy, Marc Bohner, Gamal Baroud
This study introduced and demonstrated a new method to investigate the repair process of bone defects using micro- and macroporous beta-tricalcium phosphate (β-TCP) substitutes. Specifically, the new method combined and aligned histology, SEM, and preimplantation microcomputed tomography (mCT) data to accurately characterize tissue phases found in biopsies, and thus better understand the bone repair process. The results included (a) the exact fraction of ceramic remnants (CR); (b) the fraction of ceramic resorbed and substituted by bone (CSB); and (c) the fraction of ceramic resorbed and not substituted by bone (CNSB)...
August 2, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28758367/hobi-like-is-the-most-prevalent-ruminant-pestivirus-in-northeastern-brazil
#19
S Silveira, L F Baumbach, M N Weber, A C S Mósena, M S da Silva, S P Cibulski, M R Borba, R D Maia, V C S Coimbra, G M de Moraes, J F Ridpath, C W Canal
The ruminant pestiviral species BVDV-1, BVDV-2 and BDV, along with the putative species HoBi-like, may cause substantial economic losses in cattle, sheep and goats. Brazil's large size, variable biomes and wide range of ruminant animal production within different geographic regions suggest that the presence and prevalence of ruminant pestivirus may differ by regions within Brazil. This study investigated the genetic diversity of ruminant pestiviruses and determined the frequency of active infections within two states of the Northeast Region of Brazil, Maranhão and Rio Grande do Norte...
July 30, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28758327/characterization-of-pva-glutaraldehyde-hydrogels-obtained-using-central-composite-rotatable-design-ccrd
#20
Andreia de Araújo Morandim-Giannetti, Samantha Regina Rubio, Regina Freitas Nogueira, Fernando Dos Santos Ortega, Octaviano Magalhães Junior, Paulo Schor, Patrícia Alessandra Bersanetti
Hydrogels are made from natural or synthetic polymers and, currently, they have many biomedical applications. In this work, the conditions for obtaining a hydrogel with similar physicochemical characteristics to the vitreous humor were defined using polyvinyl alcohol (PVA) and glutaraldehyde (GLUT) as cross-linker. The concentration of PVA and GLUT were modified, and their effect was analyzed in terms of the refractive index, density, and dynamic viscosity. The hydrogel which was obtained using 3.98% (w/V) of PVA, 3...
July 31, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
keyword
keyword
6758
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"