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https://www.readbyqxmd.com/read/28441217/an-unusual-case-of-sepsis-and-petechial-rash
#1
Christina Gardner
This article describes a man who presented to the ED in acute distress with signs and symptoms of sepsis, pneumonia, and a new petechial rash on his chest. He was eventually diagnosed with Rocky Mountain spotted fever. Aggressive treatment of sepsis and timely administration of empiric antibiotics were lifesaving in this situation.
May 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28440643/field-calibration-of-xad-based-passive-air-sampler-on-the-tibetan-plateau-wind-influence-and-configuration-improvement
#2
Ping Gong, Xiao-Ping Wang, Xiande Liu, Frank Wania
The passive air sampler based on XAD-2 resin (XAD-PAS) has proven useful for collecting atmospheric persistent organic pollutants (POPs) in remote regions. Whereas laboratory studies have shown that, due to the open bottom of its housing, the passive sampling rate (PSR) of the XAD-PAS is susceptible to wind and other processes causing air turbulence, the sampler has not been calibrated in the field at sites experiencing high winds. In this study, the PSRs of the XAD-PAS were calibrated at three sites on the Tibetan Plateau, covering a wide range in temperature (T), pressure (P) and wind speed (v)...
April 25, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28440628/edaphic-conditions-regulate-denitrification-directly-and-indirectly-by-altering-denitrifier-abundance-in-wetlands-along-the-han-river-china
#3
Ziqian Xiong, Laodong Guo, Quanfa Zhang, Guihua Liu, Wenzhi Liu
Riparian wetlands play a critical role in retaining nitrogen (N) from upland runoff and improving river water quality, mainly through biological processes such as soil denitrification. However, the relative contribution of abiotic and biotic factors to riparian denitrification capacity remains elusive. Here we report the spatio-temporal dynamics of potential and unamended soil denitrification rates in 20 wetlands along the Han River, an important water source in central China. We also quantified the abundance of soil denitrifying microorganisms using nirK and nirS genes...
April 25, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28439756/psychological-distress-among-methadone-maintenance-patients-in-vietnamese-mountainous-areas
#4
Long Hoang Nguyen, Bach Xuan Tran, Huong Lan Thi Nguyen, Cuong Tat Nguyen, Canh Dinh Hoang, Hai Quan Le, Hung Van Nguyen, Huong Thi Le, Tho Dinh Tran, Carl A Latkin, Thuc Minh Thi Vu
We conducted a cross-sectional study in Tuyen Quang Province, a mountainous province in northern Vietnam, to examine rates of psychological distress among 241 patients receiving methadone maintenance treatment (MMT). Using the Kessler psychological distress Scale, we found that approximately one-fourth (26.8%) of respondents suffered from mental health pathologies. Physical health problems, current drug use, and alcohol abuse were found to be associated with mental health problems among the participants. Our findings highlight the high prevalence of psychological distress among MMT patients in northern Vietnam, and the need to integrate mental and physical health care services, as well as behavioral health counseling, into currently existing MMT clinics in this region...
April 24, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28439469/migratory-orientation-in-a-narrow-avian-hybrid-zone
#5
David P L Toews, Kira E Delmore, Matthew M Osmond, Philip D Taylor, Darren E Irwin
BACKGROUND: Zones of contact between closely related taxa with divergent migratory routes, termed migratory divides, have been suggested as areas where hybrid offspring may have intermediate and inferior migratory routes, resulting in low fitness of hybrids and thereby promoting speciation. In the Rocky Mountains of Canada there is a narrow hybrid zone between Audubon's and myrtle warblers that is likely maintained by selection against hybrids. Band recoveries and isotopic studies indicate that this hybrid zone broadly corresponds to the location of a possible migratory divide, with Audubon's warblers migrating south-southwest and myrtle warblers migrating southeast...
2017: PeerJ
https://www.readbyqxmd.com/read/28439145/revisiting-the-choice-of-the-driving-temperature-for-eddy-covariance-co2-flux-partitioning
#6
Georg Wohlfahrt, Marta Galvagno
So-called CO2 flux partitioning algorithms are widely used to partition the net ecosystem CO2 exchange into the two component fluxes, gross primary productivity and ecosystem respiration. Common CO2 flux partitioning algorithms conceptualize ecosystem respiration to originate from a single source, requiring the choice of a corresponding driving temperature. Using a conceptual dual-source respiration model, consisting of an above- and a below-ground respiration source each driven by a corresponding temperature, we demonstrate that the typical phase shift between air and soil temperature gives rise to a hysteresis relationship between ecosystem respiration and temperature...
May 1, 2017: Agricultural and Forest Meteorology
https://www.readbyqxmd.com/read/28438701/unique-parallel-radiations-of-high-mountainous-species-of-the-genus-sedum-crassulaceae-on-the-continental-island-of-taiwan
#7
Takuro Ito, Chih-Chieh Yu, Koh Nakamura, Kuo-Fang Chung, Qin-Er Yang, Cheng-Xin Fu, Zhe-Chen Qi, Goro Kokubugata
We explored the temporal and spatial diversification of the plant genus Sedum L. (Crassulaceae) in Taiwan based on molecular analysis of nrITS and cpDNA sequences from East Asian Sedum members. Our phylogenetic and ancestral area reconstruction analysis showed that Taiwanese Sedum comprised two lineages that independently migrated from Japan and Eastern China. Furthermore, the genetic distances among species in these two clades were smaller than those of other East Asian Sedum clades, and the Taiwanese members of each clade occupy extremely varied habitats with similar niches in high-mountain regions...
April 21, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28437718/nontargeted-metabolomics-approach-for-the-differentiation-of-cultivation-ages-of-mountain-cultivated-ginseng-leaves-using-uhplc-qtof-ms
#8
Xiangwei Chang, Juanjuan Zhang, Dekun Li, Dazheng Zhou, Yuling Zhang, Jincheng Wang, Bing Hu, Aichun Ju, Zhengliang Ye
The adulteration or falsification of the cultivation age of mountain cultivated ginseng (MCG) has been a serious problem in the commercial MCG market. To develop an efficient discrimination tool for the cultivation age and to explore potential age-dependent markers, an optimized ultra high-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UHPLC/QTOF-MS)-based metabolomics approach was applied in the global metabolite profiling of 156 MCG leaf (MGL) samples aged from 6 to 18 years...
April 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28437589/the-roles-of-ecology-behavior-and-effective-population-size-in-the-evolution-of-a-community
#9
Chih-Ming Hung, Sergei V Drovetski, Robert M Zink
Organismal traits such as ecological specialization and migratory behavior may affect colonization potential, population persistence, and degree of isolation, factors that determine the composition and genetic structure of communities. However, studies focusing on community assembly rarely consider these factors jointly. We sequenced 16 nuclear and one mitochondrial genes from Caucasian and European populations of 30 forest-dwelling avian species that represent diverse ecological (specialist-generalist) and behavioral (migratory-resident) backgrounds...
April 24, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28437577/high-gene-flow-despite-opposite-chirality-in-hybrid-zones-between-enantiomorphic-door-snails
#10
Eva L Koch, Marco T Neiber, Frank Walther, Bernhard Hausdorf
We studied differentiation and gene flow patterns between enantiomorphic door-snail species in two hybrid zones in the Bucegi Mountains (Romania) to investigate the effects of intrinsic barriers (complications in copulation) and extrinsic selection by environmental factors. A mitochondrial gene tree confirmed the historical separation of the examined populations into the dextral Alopia livida and the sinistral Alopia straminicollis in accordance with the morphological classification, but also indicated gene flow between the species...
April 24, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28436821/hydrological-modeling-of-fecal-indicator-bacteria-in-a-tropical-mountain-catchment
#11
Minjeong Kim, Laurie Boithias, Kyung Hwa Cho, Norbert Silvera, Chanthamousone Thammahacksa, Keooudone Latsachack, Emma Rochelle-Newall, Oloth Sengtaheuanghoung, Alain Pierret, Yakov A Pachepsky, Olivier Ribolzi
The occurrence of pathogen bacteria in surface waters is a threat to public health worldwide. In particular, inadequate sanitation resulting in high contamination of surface water with pathogens of fecal origin is a serious issue in developing countries such as Lao P.D.R. Despite the health implications of the consumption of contaminated surface water, the environmental fate and transport of pathogens of fecal origin and their indicators (Fecal Indicator Bacteria or FIB) are still poorly known in tropical areas...
April 15, 2017: Water Research
https://www.readbyqxmd.com/read/28436737/bicycle-helmet-effectiveness-is-not-overstated
#12
Jake Olivier, Igor Radun
OBJECTIVE: To discuss the challenges in estimating bicycle helmet effectiveness from case-control studies of injured cyclists and to estimate helmet effectiveness from cases and available exposure data. METHODS: Data were extracted from studies of cyclists in Seattle, USA, Victoria and New South Wales (NSW), Australia and the Netherlands. Estimates of helmet use were used as exposure to compute relative risks for Seattle and Victorian data. Cycling distance data are routinely collected in the Netherlands; however, this data cannot be disaggregated by helmet use which makes it unsuitable for estimating helmet effectiveness...
March 1, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28433728/vector-competence-of-amblyomma-americanum-acari-ixodidae-for-rickettsia-rickettsii
#13
Michael L Levin, Galina E Zemtsova, Lindsay F Killmaster, Alyssa Snellgrove, Lauren B M Schumacher
Rickettsia rickettsii - the etiologic agent of Rocky Mountain spotted fever (RMSF) - is widely spread across the Americas. In the US, Dermacentor spp. ticks are identified as primary vectors of R. rickettsii and Rhipicephalus sanguineus s.l. has been implicated in transmission of this pathogen in several locations in the Southwest. Conversely, ticks of the genus Amblyomma are recognized vectors of RMSF in Central and South America, but not in the US. A. americanum is one of the most aggressive human-biting ticks in the US, whose geographical range overlaps with that of reported RMSF cases...
April 12, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28433621/simultaneous-speciation-in-the-european-high-mountain-flowering-plant-genus-facchinia-minuartia-s-l-caryophyllaceae-revealed-by-genotyping-by-sequencing
#14
Markus S Dillenberger, Joachim W Kadereit
Understanding the relative importance of different mechanisms of speciation in a given lineage requires fully resolved interspecific relationships. Using Facchinia, a genus of seven species centred in the European Alps, we explore whether the polytomy found by Sanger sequencing analyses of standard nuclear (ITS) and plastid markers (trnQ-rps16) is a hard or soft polytomy by substantially increasing the amount of DNA sequence data, generated by genotyping-by-sequencing. In comparison to 142 phylogenetically informative sites in the Sanger sequences the GBS sequences yielded 3363 phylogenetically informative sites after exclusion of apparently oversaturated SNPs...
April 19, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28433328/role-of-non-traditional-locations-for-seasonal-flu-vaccination-empirical-evidence-and-evaluation
#15
Namhoon Kim, Travis P Mountain
This study investigated the role of non-traditional locations in the decision to vaccinate for seasonal flu. We measured individuals' preferred location for seasonal flu vaccination by examining the National H1N1 Flu Survey (NHFS) conducted from late 2009 to early 2010. Our econometric model estimated the probabilities of possible choices by varying individual characteristics, and predicted the way in which the probabilities are expected to change given the specific covariates of interest. From this estimation, we observed that non-traditional locations significantly influenced the vaccination of certain individuals, such as those who are high-income, educated, White, employed, and living in a metropolitan statistical area (MSA), by increasing the coverage...
April 19, 2017: Vaccine
https://www.readbyqxmd.com/read/28433111/epidemiology-and-introduction-to-the-clinical-presentation-of-wilson-disease
#16
Christine Lo, Oliver Bandmann
Our understanding of the epidemiology of Wilson disease has steadily grown since Sternlieb and Scheinberg's first prevalence estimate of 5 per million individuals in 1968. Increasingly sophisticated genetic techniques have led to revised genetic prevalence estimates of 142 per million. Various population isolates exist where the prevalence of Wilson disease is higher still, the highest being 885 per million from within the mountainous region of Rucar in Romania. In Sardinia, where the prevalence of Wilson disease has been calculated at 370 per million births, six mutations account for around 85% of Wilson disease chromosomes identified...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28431316/pbdes-polybrominated-diphenyl-ethers-pose-a-risk-to-captive-giant-pandas
#17
Yi-Ping Chen, Ying-Juan Zheng, Qiang Liu, Aaron M Ellison, Yan Zhao, Qing-Yi Ma
The Qinling subspecies of giant panda (Ailuropoda melanoleuca qinlingensis), is highly endangered; fewer than 350 individuals still inhabit Qinling Mountains. Previous research revealed captive pandas were exposed to bromine, so we hypothesized that captive pandas were exposed to and affected by polybrominated diphenyl ethers (PBDEs). To test this hypothesis, we tested blood and feces of captive and wild pandas, their drinking water, food (bamboo leaves) from SWARC (Shaanxi Wild Animal Research Center)and FNNR (Foping National Nature Reserve) and supplemental feedstuff given to captive panda at SWARC...
April 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28429645/homestead-food-production-and-maternal-and-child-dietary-diversity-in-nepal-variations-in-association-by-season-and-agroecological-zone
#18
Bishnu Dulal, Gary Mundy, Rojee Sawal, Pooja Pandey Rana, Kenda Cunningham
BACKGROUND: Suaahara, a large-scale integrated program, aimed to improve diets and nutritional status among women and children, in part by facilitating enhanced homestead food production (EHFP). OBJECTIVE: This study examines associations between EHFP and maternal and child dietary diversity and variations by season and agroecological zone (AEZ): mountains and terai. METHODS: We used data from household monitoring surveys (n = 2101 mothers; n = 994 children, 6-23 months), which included a 7-day dietary recall and maternal report on participation in 5 EHFP activities-received vegetable seeds, chicks, and technical support and participated in training and EHFP groups...
January 1, 2017: Food and Nutrition Bulletin
https://www.readbyqxmd.com/read/28428859/species-partitioning-in-a-temperate-mountain-chain-segregation-by-habitat-vs-interspecific-competition
#19
Giulia Bastianelli, Brendan A Wintle, Elizabeth H Martin, Javier Seoane, Paola Laiolo
Disentangling the relative influence of the environment and biotic interactions in determining species coexistence patterns is a major challenge in ecology. The zonation occurring along elevation gradients, or at bioclimatic contact zones, offers a good opportunity to improve such understanding because the small scale at which the partitioning occurs facilitates inference based on experiments and ecological modelling. We studied the influence of abiotic gradients, habitat types, and interspecific competition in determining the spatial turnover between two pipit and two bunting species in NW Spain...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28427839/the-prevalence-of-metabolic-syndrome-among-older-adults-in-ecuador-results-of-the-sabe-survey
#20
Carlos H Orces, Enrique Lopez Gavilanez
AIMS: To describe the prevalence of metabolic syndrome among older adults in Ecuador. A secondary objective was to examine the relationship between metabolic syndrome and its components and insulin resistance among non-diabetic participants. MATERIALS AND METHODS: The National Survey of Health, Wellbeing, and Aging survey was used to examine the prevalence of metabolic syndrome according to demographic, behavioral, and health characteristics of the participants...
April 11, 2017: Diabetes & Metabolic Syndrome
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