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https://www.readbyqxmd.com/read/29046024/clinical-impact-in-the-real-life-of-guidelines-recommendations-for-atopic-dermatitis-in-a-tropical-population-teccema-cohort
#1
Jorge Sánchez, Yuliana Toro, Ricardo Cardona
BACKGROUND: Real-life impact of guidelines for the management of atopic dermatitis has been poorly studied. OBJECTIVE: To assess atopic dermatitis clinical control in residents of a tropical area managed according to international consensuses. METHODS: Prospective study with a 24-month follow-up. Clinical response was assessed with SCORAD, DLQI and a subjective scale (SS) on severity perception by the patient. RESULTS: Two-hundred and thirty-three patients were stratified according to SCORAD: 53 had mild severity (22%), 116 moderate (49%) and 64 severe (27%)...
July 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/29045705/outbreak-and-eradication-of-tropical-rat-mite-acari-macronyssidae-in-a-european-animal-facility
#2
Yeray Brito-Casillas, Mercedes Díaz-Sarmiento, Moisés García-Arencibia, Cristina Carranza, Antonio Castrillo, Leandro Fernández-Pérez, Manuel Zumbado-Peña, Jorge F González, Ana M Wägner, David Florin
A zoonotic, opportunistic out-break of tropical rat mite Ornithonyssus bacoti [Acari: Macronyssidae; Ornithonyssus bacoti (Hirst)] in an animal facility, is described. Immunocompetent mice [Mus musculus (Linnaeus)] and rat [Rattus norvegicus (Berkenhout)] strains in a conventional health status facility suffered from scratching and allopecia and staff members suffered from pruritic, erythemato-papular lesions, presumed to be allergic in origin. O. bacoti was identified and treatment with a 0.1% ivermectin solution led to its complete erradication...
October 17, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29044947/partial-characterization-of-phylogeny-ecology-and-function-of-the-fibrolytic-bacterium-ruminococcus-flavefaciens%C3%A2-os14-newly-isolated-from-the-rumen-of-swamp-buffalo
#3
Phoompong Boonsaen, Madoka Kinjo, Suriya Sawanon, Yutaka Suzuki, Satoshi Koike, Yasuo Kobayashi
The fibrolytic rumen bacterium Ruminococcus flavefaciensOS14 was isolated from swamp buffalo and its phylogenetic, ecological and digestive properties were partially characterized. Isolates from rumen contents of four swamp buffalo were screened for fibrolytic bacteria; one of the 40 isolates showed a distinctive feature of solubilizing cellulose powder in liquid culture and was identified as R. flavefaciens based on its 16S ribosomal DNA sequence. This isolate, OS14, was employed for detection and digestion studies, for which a quantitative PCR assay was developed and defined cultures were tested with representative forages in Thailand...
October 17, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29044840/impacts-of-climate-and-land-use-on-n2-o-and-ch4-fluxes-from-tropical-ecosystems-in-the-mt-kilimanjaro-region-tanzania
#4
Adrian Gütlein, Friederike Gerschlauer, Imani Kikoti, Ralf Kiese
In this study, we quantify the impacts of climate and land use on soil N2 O and CH4 fluxes from tropical forest, agroforest, arable and savanna ecosystems in Africa. To do so, we measured GHG fluxes from twelve different ecosystems along climate and land-use gradients at Mt. Kilimanjaro, combining long-term in situ chamber and laboratory soil-core incubation techniques. Both methods showed similar patterns of GHG exchange. Although there were distinct differences from ecosystem to ecosystem, soils generally functioned as net sources and sinks for N2 O and CH4 , respectively...
October 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29044761/thermal-refugia-against-coral-bleaching-throughout-the-northern-red-sea
#5
Eslam O Osman, David J Smith, Maren Ziegler, Benjamin Kürten, Constanze Conrad, Khaled M El-Haddad, Christian R Voolstra, David J Suggett
Tropical reefs have been impacted by thermal anomalies caused by global warming that induced coral bleaching and mortality events globally. However, there have only been very few recordings of bleaching within the Red Sea despite covering a latitudinal range of 15° and consequently it has been considered a region that is less sensitive to thermal anomalies. We therefore examined historical patterns of sea surface temperature (SST) and associated anomalies (1982-2012) and compared warming trends with a unique compilation of corresponding coral bleaching records from throughout the region...
October 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29044105/late-holocene-slowdown-of-the-indian-ocean-walker-circulation
#6
Mahyar Mohtadi, Matthias Prange, Enno Schefuß, Tim C Jennerjahn
Changes in tropical zonal atmospheric (Walker) circulation induce shifts in rainfall patterns along with devastating floods and severe droughts that dramatically impact the lives of millions of people. Historical records and observations of the Walker circulation over the 20th century disagree on the sign of change and therefore, longer climate records are necessary to better project tropical circulation changes in response to global warming. Here we examine proxies for thermocline depth and rainfall in the eastern tropical Indian Ocean during the globally colder Last Glacial Maximum (19-23 thousand years ago) and for the past 3000 years...
October 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/29044104/mining-drives-extensive-deforestation-in-the-brazilian-amazon
#7
Laura J Sonter, Diego Herrera, Damian J Barrett, Gillian L Galford, Chris J Moran, Britaldo S Soares-Filho
Mining poses significant and potentially underestimated risks to tropical forests worldwide. In Brazil's Amazon, mining drives deforestation far beyond operational lease boundaries, yet the full extent of these impacts is unknown and thus neglected in environmental licensing. Here we quantify mining-induced deforestation and investigate the aspects of mining operations, which most likely contribute. We find mining significantly increased Amazon forest loss up to 70 km beyond mining lease boundaries, causing 11,670 km(2) of deforestation between 2005 and 2015...
October 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/29043534/male-produced-aggregation-pheromone-of-coffee-bean-weevil-araecerus-fasciculatus
#8
Shuai Yang, Xiao-Fang Zhang, Yu-Lin Gao, Dan Chen, Dong-Mei She, Tao Zhang, Jun Ning
The coffee bean weevil (CBW), Araecerus fasciculatus (De Geer, 1775), is a cosmopolitan stored-product pest, especially in tropical and subtropical areas. Previous reports showed evidence for aggregation behavior of CBW and this study aimed to identify and evaluate the aggregation pheromone of this pest. Whole-body solvent extractions were analyzed by coupled gas chromatography-mass spectrometry and comparison of male and female extracts showed a male-specific compound which was identified as squalene, 2,6,10,15,19,23-hexamethyl-2,6,10,14,18,22-tetracosahexaene...
October 17, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29043389/biomagnification-of-mercury-in-fish-from-two-gold-mining-impacted-tropical-marshes-in-northern-colombia
#9
José Luis Marrugo-Negrete, Javier Alonso Ruiz-Guzmán, Ana Carolina Ruiz-Fernández
Total mercury concentrations (T-Hg) and stable isotope ratios (δ(15)N and δ(13)C) were analyzed in the muscle of fish, collected at two marshes impacted by gold mining in Northern Colombia, to evaluate the seasonal and spatial behavior of these variables and mercury biomagnification based on their relationship with δ(15)N ratios in the fish. There was not significant (p > 0.05) seasonal differences (dry and rainy season) in δ(15)N and δ(13)C values in none marsh, suggesting that these fish species keep a similar feed pattern within each marsh along the year...
October 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29043216/proximate-phytochemical-and-in-vitro-antimicrobial-properties-of-dried-leaves-from-ocimum-gratissimum
#10
Justina Y Talabi, Solomon Akinremi Makanjuola
Ocimum gratissimum is a common plant in the tropics and has been used in food and medicine. Its usage in food and medicine could be attributed to its phtyochemical and antimicrobial properties. In this study we investigated the proximate, phytochemical, and antimicrobial attributes of air dried leaves of O. gratissimum. The aqueous extract was found to contain phtyochemicals with alkaloid and saponin present in appreciable amounts. The proximate analysis (crude protein and crude fibre content were 15.075% and 17...
September 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/29043055/seasonal-dynamics-in-mosquito-abundance-and-temperature-do-not-influence-avian-malaria-prevalence-in-the-himalayan-foothills
#11
Farah Ishtiaq, Christopher G R Bowden, Yadvendradev V Jhala
We examined seasonal prevalence in avian haemosporidians (Plasmodium and Haemoproteus) in migrant and resident birds in western Himalaya, India. We investigated how infection with haemosporidians in avian hosts is associated with temporal changes in temperature and mosquito abundance along with host abundance and life-history traits (body mass). Using molecular methods for parasite detection and sequencing partial cytochrome b gene, 12 Plasmodium and 27 Haemoproteus lineages were isolated. Our 1-year study from December 2008 to December 2009 in tropical Himalayan foothills revealed a lack of seasonal variation in Plasmodium spp...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29043045/radseq-dataset-with-90-missing-data-fully-resolves-recent-radiation-of-petalidium-acanthaceae-in-the-ultra-arid-deserts-of-namibia
#12
Erin A Tripp, Yi-Hsin Erica Tsai, Yongbin Zhuang, Kyle G Dexter
Deserts, even those at tropical latitudes, often have strikingly low levels of plant diversity, particularly within genera. One remarkable exception to this pattern is the genus Petalidium (Acanthaceae), in which 37 of 40 named species occupy one of the driest environments on Earth, the Namib Desert of Namibia and neighboring Angola. To contribute to understanding this enigmatic diversity, we generated RADseq data for 47 accessions of Petalidium representing 22 species. We explored the impacts of 18 different combinations of assembly parameters in de novo assembly of the data across nine levels of missing data plus a best practice assembly using a reference Acanthaceae genome for a total of 171 sequence datasets assembled...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29043044/natives-and-non-natives-plants-show-different-responses-to-elevation-and-disturbance-on-the-tropical-high-andes-of-ecuador
#13
Verónica Sandoya, Aníbal Pauchard, Lohengrin A Cavieres
The aim was to assess patterns of plant diversity in response to elevation and disturbance in a tropical mountain. The study area was located in north-central portion of the Eastern Cordillera of the Ecuadorian Andes, on a road from 1,150 m a.s.l. (Osayacu) to 4,000 (Papallacta). Along a mountain road spanning a wide altitudinal gradient, at 20 elevations we sampled three plots: one at the roadside and two perpendicular to the roadside. The relationship between elevation and species richness was assessed using linear and quadratic regressions, the effect of disturbance on species richness was determined by ANCOVA and a t test with parameters obtained from quadratic equations...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29043043/a-pantropical-analysis-of-the-impacts-of-forest-degradation-and-conversion-on-local-temperature
#14
Rebecca A Senior, Jane K Hill, Pamela González Del Pliego, Laurel K Goode, David P Edwards
Temperature is a core component of a species' fundamental niche. At the fine scale over which most organisms experience climate (mm to ha), temperature depends upon the amount of radiation reaching the Earth's surface, which is principally governed by vegetation. Tropical regions have undergone widespread and extreme changes to vegetation, particularly through the degradation and conversion of rainforests. As most terrestrial biodiversity is in the tropics, and many of these species possess narrow thermal limits, it is important to identify local thermal impacts of rainforest degradation and conversion...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29043038/habitat-niche-breadth-predicts-invasiveness-in-solitary-ascidians
#15
Itai Granot, Noa Shenkar, Jonathan Belmaker
A major focus of invasion biology is understanding the traits associated with introduction success. Most studies assess these traits in the invaded region, while only few compare nonindigenous species to the pool of potential invaders in their native region. We focused on the niche breadth hypothesis, commonly evoked but seldom tested, which states that generalist species are more likely to become introduced as they are capable of thriving under a wide set of conditions. Based on the massive introduction of tropical species into the Mediterranean via the Suez Canal (Lessepsian migration), we defined ascidians in the Red Sea as the pool of potential invaders...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29043024/validating-distribution-models-for-twelve-endemic-bird-species-of-tropical-dry-forest-in-western-mexico
#16
Miguel A Ortega-Huerta, Jorge H Vega-Rivera
Considering the high biodiversity and conservation concerns of the tropical dry forest, this study aim is to predict and evaluate the potential and current distributions of twelve species of endemic birds which distribute along the western slope of Mexico. The main goal is to evaluate altogether different methods for predicting actual species distribution models (ADMs) of the twelve species including the identification of key environmental potential limiting factors. ADMs for twelve endemic Mexican birds were generated and validated by means of applying: (1) three widely used species niche modeling approaches (ENFA, Garp, and Maxent); (2) two thresholding methods, based on ROC curves and Kappa Index, for transforming continuous models to presence/absence (binary) models; (3) documented habitat-species associations for reducing species potential distribution models (PDMs); and (4) field occurrence data for validating final ADMs...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29043023/sapling-growth-rates-reveal-conspecific-negative-density-dependence-in-a-temperate-forest
#17
Benjamin S Ramage, Daniel J Johnson, Erika Gonzalez-Akre, William J McShea, Kristina J Anderson-Teixeira, Norman A Bourg, Keith Clay
Local tree species diversity is maintained in part by conspecific negative density dependence (CNDD). This pervasive mechanism occurs in a variety of forms and ecosystems, but research to date has been heavily skewed toward tree seedling survival in tropical forests. To evaluate CNDD more broadly, we investigated how sapling growth rates were affected by conspecific adult neighbors in a fully mapped 25.6 ha temperate deciduous forest. We examined growth rates as a function of the local adult tree neighborhood (via spatial autoregressive modeling) and compared the spatial positioning of faster-growing and slower-growing saplings with respect to adult conspecific and heterospecific trees (via bivariate point pattern analysis)...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29042670/from-est-to-novel-spider-silk-gene-identification-for-production-of-spidroin-based-biomaterials
#18
Weidong Huang, Yan Zhang, Yifan Chen, Yin Wang, Wensu Yuan, Ning Zhang, Toong Jin Lam, Zhiyuan Gong, Daiwen Yang, Zhi Lin
A cDNA library from a pool of all the seven silk glands from a tropical spider species was constructed. More than 1000 expressed sequence tag (EST) clones were created. Almost 65% of the EST clones were identified and around 50% were annotated. The cellular and functional distribution of the EST clones indicated high protein synthesis activity in spider silk glands. Novel clones with repetitive amino acid sequences, which is one of the most important characteristics of spider silk genes, were isolated. One of these clones, namely TuSp2 in current research, contains two almost identical fragments with one short C-terminal domain...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042642/modeling-the-climatic-suitability-of-leishmaniasis-vector-species-in-europe
#19
Lisa K Koch, Judith Kochmann, Sven Klimpel, Sarah Cunze
Climate change will affect the geographical distribution of many species in the future. Phlebotomine sandflies are vector species for leishmaniasis, a tropical neglected disease. We applied an ensemble forecasting niche modeling approach to project future changes in climatic suitability for ten vector competent sandfly species in Europe. Whereas the main area of sandfly distribution currently lies in the Mediterranean region, models generally projected a northwards expansion of areas with suitable climatic conditions for most species (P...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042575/role-of-the-qinghai-tibetan-plateau-uplift-in-the-northern-hemisphere-disjunction-evidence-from-two-herbaceous-genera-of-rubiaceae
#20
Tao Deng, Jian-Wen Zhang, Ying Meng, Sergei Volis, Hang Sun, Ze-Long Nie
To assess the role of the Qinghai-Tibetan Plateau uplift in shaping the intercontinental disjunction in Northern Hemisphere, we analyzed the origin and diversification within a geological timeframe for two relict herbaceous genera, Theligonum and Kelloggia (Rubiaceae). Phylogenetic relationships within and between Theligonum and Kelloggia as well as their relatives were inferred using five chloroplast markers with parsimony, Bayesian and maximum-likelihood approaches. Migration routes and evolution of these taxa were reconstructed using Bayesian relaxed molecular clock and ancestral area reconstruction...
October 17, 2017: Scientific Reports
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