keyword
MENU ▼
Read by QxMD icon Read
search

Rocky mountain

keyword
https://www.readbyqxmd.com/read/29668136/-a-fatal-case-series-of-rocky-mountain-spotted-fever-in-sonora-m%C3%A3-xico
#1
Jesús Delgado-De la Mora, Jesús David Licona-Enríquez, Marcia Leyva-Gastélum, David Delgado-De la Mora, Adela Rascón-Alcantar, Gerardo Álvarez-Hernández
INTRODUCTION: Rocky Mountain spotted fever is a highly lethal infectious disease, particularly if specific treatment with doxycycline is given belatedly. OBJECTIVE: To describe the clinical profile of fatal Rocky Mountain spotted fever cases in hospitalized patients in the state of Sonora, México. MATERIALS AND METHODS: We conducted a cross-sectional study on a series of 47 deaths caused by Rickettsia rickettsii from 2013 to 2016. The diagnosis of Rocky Mountain spotted fever was confirmed in a single blood sample by polymerase chain reaction (PCR) or by a four-fold increase in immunoglobulin G measured in paired samples analyzed by indirect immunofluorescence...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29667874/evaluation-of-a-test-and-cull-strategy-for-reducing-prevalence-of-chronic-wasting-disease-in-mule-deer-odocoileus-hemionus
#2
Lisa L Wolfe, Mary Kay Watry, Michael A Sirochman, Tracey M Sirochman, Michael W Miller
  We evaluated a test and cull strategy for lowering chronic wasting disease (CWD) prevalence in a naturally-infected, free-ranging mule deer ( Odocoileus hemionus) herd wintering in the town of Estes Park, Colorado, USA and in nearby Rocky Mountain National Park. We tested 48-68% of the estimated number of adult (≥1 yr old) deer annually for 5 yr via tonsil biopsy immunohistochemistry (IHC), collecting 1,251 samples from >700 individuals and removing IHC-positive deer. Among males, CWD prevalence during the last 3 yr of selective culling was lower (one-sided Fisher's exact test P=0...
April 18, 2018: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29658158/limited-evidence-for-co-2-related-growth-enhancement-in-northern-rocky-mountain-lodgepole-pine-populations-across-climate-gradients
#3
Charlotte C Reed, Ashley P Ballantyne, L Annie Cooper, Anna Sala
Forests sequester large amounts of carbon annually and are integral in buffering against effects of global change. Increasing atmospheric CO2 may enhance photosynthesis and/or decrease stomatal conductance (gs ) thereby enhancing intrinsic water use efficiency (iWUE), having potential indirect and direct benefits to tree growth. While increasing iWUE has been observed in most trees globally, enhanced growth is not ubiquitous, possibly due to concurrent climatic constraints on growth. To investigate our incomplete understanding of interactions between climate and CO2 and their impacts on tree physiology and growth, we used an environmental gradient approach...
April 15, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29619916/descriptions-of-two-new-cases-of-rocky-mountain-spotted-fever-in-panama-and-coincident-infection-with-rickettsia-rickettsii-in-rhipicephalus-sanguineus-s-l-in-an-urban-locality-of-panama-city-panama
#4
A Martínez-Caballero, B Moreno, C González, G Martínez, M Adames, J V Pachar, J B Varela-Petrucelli, J Martínez-Mandiche, J A Suárez, L Domínguez, Y Zaldívar, S Bermúdez
The clinical and pathologic characterisation of two fatal cases of tick-borne rickettsiosis in rural (El Valle) and urban (City of Panama) Panama are described. Clinical and autopsy findings were non-specific, but the molecular analysis was used to identify Rickettsia rickettsii in both cases. No ticks were collected in El Valle, while in the urban case, R. rickettsii was detected in Rhipicephalus sanguineus s.l., representing the first molecular finding in this tick in Panama and Central America.
April 5, 2018: Epidemiology and Infection
https://www.readbyqxmd.com/read/29617892/medical-knowledge-related-to-rocky-mountain-spotted-fever-in-sonora-mexico
#5
Gerardo Alvarez-Hernandez, Kacey Ernst, Natalia Haydee Acuña-Melendrez, Anabel Patricia Vargas-Ortega, Maria Del Carmen Candia-Plata
Background: Rocky Mountain spotted fever (RMSF) is a tick-borne disease with a high case-fatality rate unless diagnosed promptly and treated timely with doxycycline. Physician knowledge about presentation and treatment can improve outcomes of RMSF in endemic regions, such as Sonora in northern Mexico, where RMSF has caused 1348 non-fatal cases and 247 deaths from 2003 to 2016. Methods: A cross-sectional study was conducted with 343 physicians working in medical facilities in Sonora, Mexico...
March 29, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29617847/firm-efficiency-and-returns-to-scale-in-the-honey-bee-pollination-services-industry
#6
Chian Jones Ritten, Dannele Peck, Mariah Ehmke, M A Buddhika Patalee
While the demand for pollination services have been increasing, continued declines in honey bee, Apis mellifera L. (Hymenoptera: Apidae), colonies have put the cropping sector and the broader health of agro-ecosystems at risk. Economic factors may play a role in dwindling honey bee colony supply in the United States, but have not been extensively studied. Using data envelopment analysis (DEA), we measure technical efficiency, returns to scale, and factors influencing the efficiency of those apiaries in the northern Rocky Mountain region participating in the pollination services market...
April 3, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29617186/determining-raptor-species-and-tissue-sensitivity-for-improved-west-nile-virus-surveillance
#7
Kendall L Kritzik, Gail Kratz, Nicholas A Panella, Kristen Burkhalter, Rebecca J Clark, Brad J Biggerstaff, Nicholas Komar
  Raptors are a target sentinel species for West Nile virus (WNV) because many are susceptible to WNV disease, they are easily sighted because of their large size, and they often occupy territories near human settlements. Sick and dead raptors accumulate at raptor and wildlife rehabilitation clinics. However, investigations into species selection and specimen type for efficient detection of WNV are lacking. Accordingly, we evaluated dead raptors from north-central Colorado and SE Wyoming over a 4-yr period...
April 4, 2018: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29589511/circadian-rhythms-and-reproductive-phenology-covary-in-a-natural-plant-population
#8
Matti J Salmela, Robby L McMinn, Carmela R Guadagno, Brent E Ewers, Cynthia Weinig
The circadian clock is a molecular timekeeper that matches endogenous rhythms in diverse traits with 24-h cycles in the external environment. Although a lack of clock resonance to the environment is detrimental to performance, clock phenotypes in wild populations nevertheless deviate substantially from the predicted optimal cycle length of 24 h, and significant genetic variation exists for circadian parameters. Here, we describe covariation between 2 traits considered to reflect adaptation to different aspects of temporal environmental heterogeneity, circadian rhythms (adaptation to daily environmental cycles) and flowering time (adaptation to seasonal cycles), in a Rocky Mountain population of the mustard Boechera stricta, a North American relative of Arabidopsis thaliana...
March 1, 2018: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/29579678/organohalogen-contaminants-in-common-loons-gavia-immer-breeding-in-western-alberta-canada
#9
Tanya M Brown, Sarah I Lord, David W Schindler, John E Elliott
We examined the influence of biological and geographical factors on the levels and patterns of organohalogen contaminants in blood of adult common loons (Gavia immer) collected from 20 lakes in Alberta, Canada. The loons were captured in the 2006 and 2007 breeding seasons over a 900 m elevation gradient across the eastern slope of the Canadian Rocky Mountains. While PCBs dominated the composition of these contaminants in loons at all sites (∑PCBs > p,p'-DDE > ∑PBDEs > ∑Chlordanes > HCB), p,p'-DDE and ∑PBDEs were also important, averaging approximately 50% and 20% of total PCB concentrations, respectively...
March 17, 2018: Chemosphere
https://www.readbyqxmd.com/read/29554097/the-future-of-subalpine-forests-in-the-southern-rocky-mountains-trajectories-for-pinus-aristata-genetic-lineages
#10
Sparkle L Malone, Anna W Schoettle, Jonathan D Coop
Like many other high elevation alpine tree species, Rocky Mountain bristlecone pine (Pinus aristata Engelm.) may be particularly vulnerable to climate change. To evaluate its potential vulnerability to shifts in climate, we defined the suitable climate space for each of four genetic lineages of bristlecone pine and for other subalpine tree species in close proximity to bristlecone pine forests. Measuring changes in the suitable climate space for lineage groups is an important step beyond models that assume species are genetically homogenous...
2018: PloS One
https://www.readbyqxmd.com/read/29553918/possible-northward-introgression-of-a-tropical-lineage-of-rhipicephalus-sanguineus-ticks-at-a-site-of-emerging-rocky-mountain-spotted-fever
#11
Zachary Villarreal, Nicole Stephenson, Janet Foley
Increasing rates of Rocky Mountain spotted fever (RMSF) in the southwestern United States and northern Mexico underscore the importance of studying the ecology of the brown dog tick, Rhipicephalus sanguineus, the vector in that region. This species is reported to comprise distinct tropical and temperate lineages which may differ in vectorial capacity for RMSF and which are hypothesized to be limited in their geographical range by climatic conditions. In this study, lineage was determined for ticks from nine locations in California, Arizona, and Mexico by DNA sequencing of 12S, 16S, and D-loop ribosomal RNA...
March 19, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/29550216/detection-of-rickettsia-spp-in-ticks-acari-ixodidae-of-domestic-animals-in-colombia
#12
Fredy A Rivera-Páez, Thiago F Martins, Paula A Ossa-López, Bruno Rodrigues Sampieri, Maria I Camargo-Mathias
Rickettsiosis are emerging or re-emerging diseases, with a worldwide distribution associated to transmission by arthropod vectors. Rickettsia species belong to the spotted fever group (SFG) and are transmitted by hard ticks (Acari: Ixodidae) that may act as vectors and reservoirs. This study carried out a molecular detection of Rickettsia from 7 species of the family Ixodidae collected from domestic hosts by PCR amplification of fragments of the citrate synthase "gltA" gene and outer membrane protein "ompA" gene...
March 9, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29549965/tick-borne-illness-rocky-mountain-spotted-fever
#13
REVIEW
Robin B McFee, Larry Bush, Maria T Vazquez-Pertejo
No abstract text is available yet for this article.
March 14, 2018: Disease-a-month: DM
https://www.readbyqxmd.com/read/29529110/what-s-eating-you-clinical-manifestations-of-dermacentor-tick-bites
#14
Alexander B Hicks, Dirk M Elston
Dermacentor ticks are hard ticks found throughout most of North America and are easily identified by their large size, ornate scutum, and prominent dorsal pits. They are important disease vectors and are implicated in transmission of Rocky Mountain spotted fever (RMSF), Colorado tick fever, tularemia, and erlichiosis. They also are an important cause of fatal tick paralysis.
January 2018: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/29523205/pathologic-and-biochemical-characterization-of-prp-sc-from-elk-with-prnp-polymorphisms-at-codon-132-after-experimental-infection-with-the-chronic-wasting-disease-agent
#15
S Jo Moore, Catherine E Vrentas, Soyoun Hwang, M Heather West Greenlee, Eric M Nicholson, Justin J Greenlee
BACKGROUND: The Rocky Mountain elk (Cervus elaphus nelsoni) prion protein gene (PRNP) is polymorphic at codon 132, with leucine (L132) and methionine (M132) allelic variants present in the population. In elk experimentally inoculated with the chronic wasting disease (CWD) agent, different incubation periods are associated with PRNP genotype: LL132 elk survive the longest, LM132 elk are intermediate, and MM132 elk the shortest. The purpose of this study was to investigate potential mechanisms underlying variations in incubation period in elk of different prion protein genotypes...
March 9, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29500944/rocky-mountain-spotted-fever-brain-imaging-findings
#16
Bruna Melo Coelho Loureiro, Fabiano Reis, Grazielly de Fátima Pereira, Cristina Alba Lalli
No abstract text is available yet for this article.
February 28, 2018: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29496541/pseudo-parallel-patterns-of-disjunctions-in-an-arctic-alpine-plant-lineage
#17
Rebecca L Stubbs, Ryan A Folk, Chun-Lei Xiang, Douglas E Soltis, Nico Cellinese
Disjunct distributions have intrigued biologists for centuries. Investigating these biogeographic patterns provides insight into speciation and biodiversity at multiple spatial and phylogenetic scales. Some disjunctions have been intensively studied, yet others have been largely overlooked and remain poorly understood. Among the lesser-known disjunction patterns is that between the mountain ranges of western North America. Flora and fauna endemic to the mountains of this region provide important systems for investigating causes and results of disjunctions, given the relatively recent geological formation of this area and the intense climatic fluctuations that have occurred since its formation...
February 26, 2018: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29478491/50-years-ago-in-the-journal-of-pediatrics-detailing-ipecac-report-on-the-committee-on-poison-control-rocky-mountain-pediatric-society
#18
Pedro Lennon Sáenz Chávez
No abstract text is available yet for this article.
March 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29474831/comparative-genomic-analysis-of-rickettsia-rickettsii-for-the-identification-of-drug-and-vaccine-targets-tolc-as-a-proposed-candidate-for-case-study
#19
Pramod Kumar Maurya, Swati Singh, Ashutosh Mani
Antibiotic resistance is increasing rapidly in pathogenic organisms, creating more complications for treatment of diseases. Rocky Mountain spotted fever (RMSF) is a neglected tropical disease in humans caused by Rickettsia rickettsii for which no effective therapeutic is available. Subtractive genomics methods facilitate the characterization of non-homologous essential proteins that could be targeted for the discovery of potential therapeutic compounds against R. rickettsii to combat RMSF. Present study followed an in-silico based methodology, involving scanning and filtering the complete proteome of Rickettsia rickettsii by using several prioritization parameters in the search of potential candidates for drug development...
February 20, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29469981/moisture-availability-limits-subalpine-tree-establishment
#20
Robert A Andrus, Brian J Harvey, Kyle C Rodman, Sarah J Hart, Thomas T Veblen
In the absence of broad-scale disturbance, many temperate coniferous forests experience successful seedling establishment only when abundant seed production coincides with favorable climate. Identifying the frequency of past establishment events and the climate conditions favorable for seedling establishment is essential to understanding how climate warming could affect the frequency of future tree establishment events and therefore future forest composition or even persistence of a forest cover. In the southern Rocky Mountains, USA, research on the sensitivity of establishment of Engelmann spruce (Picea engelmannii) and subalpine fir (Abies lasiocarpa)-two widely distributed, co-occurring conifers in North America-to climate variability has focused on the alpine treeline ecotone, leaving uncertainty about the sensitivity of these species across much of their elevation distribution...
February 22, 2018: Ecology
keyword
keyword
6558
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"