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https://www.readbyqxmd.com/read/28633359/does-long-term-intraoral-service-affect-the-mechanical-properties-and-elemental-composition-of-multistranded-wires-of-lingual-fixed-retainers
#1
Spiros Zinelis, Nikolaos Pandis, Youssef S Al Jabbari, George Eliades, Theodore Eliades
Purpose: The aim of this study was to evaluate the elemental and mechanical alterations of stainless steel (SS) multistranded orthodontic wires used in fixed retention after intraoral ageing. Materials and Methods: Two types of 0.022-inch, seven-stranded wires, Lingual Retainer Wire (LRW) and Tru-Chrome (TCH), from the same manufacturer (Rocky Mountain Orthodontics, Denver, Colo, USA) were tested. Thirty-three samples from LRW group and thirty-seven from TCH were collected, whereas three unused wires from each package were used as controls...
June 15, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28598270/investigating-the-adult-ixodid-tick-populations-and-their-associated-anaplasma-ehrlichia-and-rickettsia-bacteria-at-a-rocky-mountain-spotted-fever-hotspot-in-western-tennessee
#2
Rebecca T Trout Fryxell, Brain M Hendricks, Kimberly Pompo, Sarah E Mays, Dave J Paulsen, Darwin J Operario, Allan E Houston
Ehrlichiosis and rickettsiosis are two common bacterial tick-borne diseases in the southeastern United States. Ehrlichiosis is caused by ehrlichiae transmitted by Amblyomma americanum and rickettsiosis is caused by rickettsiae transmitted by Amblyomma maculatum and Dermacentor variabilis. These ticks are common and have overlapping distributions in the region. The objective of this study was to identify Anaplasma, Ehrlichia, and Rickettsia species associated with questing ticks in a Rocky Mountain spotted fever (RMSF) hotspot, and identify habitats, time periods, and collection methods for collecting questing-infected ticks...
June 9, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28576950/retrospective-case-reports-of-two-central-north-carolina-residents-frequency-of-tick-bites-and-associated-illnesses-2001-2014
#3
Marcia E Herman-Giddens, D Marcus Herman-Giddens
BACKGROUND Tick bites are a source of illness and disease agents that may lead to morbidity and occasional fatalities in North Carolina. Public health interest in tick-borne illness and disease has increased due to continuing discoveries of tick-borne diseases and their increasing geographic spread and disease incidence. There are no data published on lay individuals with cumulative tick bites and associated illnesses over a period of years.METHODS We learned of a married couple living on a central North Carolina property who had used reasonable bite prevention methods, kept attached ticks after removal, and recorded dates and related illness records from 2001-2014...
May 2017: North Carolina Medical Journal
https://www.readbyqxmd.com/read/28544612/ecology-adaptation-and-function-of-methane-sulfidic-spring-water-biofilm-microorganisms-including-a-strain-of-anaerobic-fungus-mucor-hiemalis
#4
Enamul Hoque, Johannes Fritscher
Ecological aspects, adaptation, and some functions of a special biofilm and its unique key anaerobic fungus Mucor hiemalis strain EH11 isolated from a pristine spring (Künzing, Bavaria, Germany) are described. The spring's pure nature is characterized by, for example, bubbling methane, marine-salinity, mild hydrothermal (~19.1°C), sulfidic, and reductive-anoxic (Eh : -241 to -253 mV, O2 : ≤ 0.1 mg/L) conditions. It is geoecologically located at the border zone between Bavarian Forest (crystalline rocky mountains) and the moor-like Danube River valley, where geological displacements bring the spring's water from the deeper layers of former marine sources up to the surface...
May 24, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28542063/drivers-motivating-community-health-improvement-plan-completion-by-local-public-health-agencies-and-community-partners-in-the-rocky-mountain-region-and-western-plains
#5
Anne Hill, Holly J Wolf, Elaine Scallan, Jenny Case, Yvonne Kellar-Guenther
CONTEXT: There are numerous drivers that motivate completion of community health improvement plans (CHIPs). Some are more obvious and include voluntary public health accreditation, state requirements, federal and state funding, and nonprofit hospital requirements through IRS regulations. Less is known about other drivers, including involvement of diverse partners and belief in best practices, that may motivate CHIP completion. OBJECTIVE: This research investigated the drivers that motivated CHIP completion based on experiences of 51 local public health agencies (LPHAs)...
July 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/28537784/the-dangerousness-of-mountain-recreation-a-quantitative-overview-of-fatal-and-non-fatal-accidents-in-france
#6
Bastien Soulé, Brice Lefèvre, Eric Boutroy
In France, there is a growing enthusiasm for outdoor sports and recreation. In the meantime, the risk of both severe and frequent injury associated with active pursuits in mountain areas is acknowledged. This paper tackles accidents related to mountain sports, with a focus on three critical activities: hiking, mountaineering and ski touring. The aim consists of estimating the actual number of accidents (whether they entailed deaths or injuries) in the three above-mentioned activities. In order to align the information collected, then provide estimations based on the reasoned crossing of these secondary data, we consulted and summarised all the databases available on the French territory...
August 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28503490/the-distinct-transcriptional-response-of-the-midgut-of-amblyomma-sculptum-and-amblyomma-aureolatum-ticks-to-rickettsia-rickettsii-correlates-to-their-differences-in-susceptibility-to-infection
#7
Larissa A Martins, Maria F B de Melo Galletti, José M Ribeiro, André Fujita, Francisco B Costa, Marcelo B Labruna, Sirlei Daffre, Andréa C Fogaça
Rickettsia rickettsii is a tick-borne obligate intracellular bacterium that causes Rocky Mountain Spotted Fever (RMSF). In Brazil, two species of ticks in the genus Amblyomma, A. sculptum and A. aureolatum, are incriminated as vectors of this bacterium. Importantly, these two species present remarkable differences in susceptibility to R. rickettsii infection, where A. aureolatum is more susceptible than A. sculptum. In the current study, A. aureolatum and A. sculptum ticks were fed on suitable hosts previously inoculated with R...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28503372/endosymbiont-interference-and-microbial-diversity-of-the-pacific-coast-tick-dermacentor-occidentalis-in-san-diego-county-california
#8
Nikos Gurfield, Saran Grewal, Lynnie S Cua, Pedro J Torres, Scott T Kelley
The Pacific coast tick, Dermacentor occidentalis Marx, is found throughout California and can harbor agents that cause human diseases such as anaplasmosis, ehrlichiosis, tularemia, Rocky Mountain spotted fever and rickettsiosis 364D. Previous studies have demonstrated that nonpathogenic endosymbiotic bacteria can interfere with Rickettsia co-infections in other tick species. We hypothesized that within D. occidentalis ticks, interference may exist between different nonpathogenic endosymbiotic or nonendosymbiotic bacteria and Spotted Fever group Rickettsia (SFGR)...
2017: PeerJ
https://www.readbyqxmd.com/read/28480038/comparative-swimming-and-station-holding-ability-of-the-threatened-rocky-mountain-sculpin-cottus-sp-from-four-hydrologically-distinct-rivers
#9
Marie F Veillard, Jonathan L W Ruppert, Keith Tierney, Douglas A Watkinson, Mark Poesch
Hydrologic alterations, such as dams, culverts or diversions, can introduce new selection pressures on freshwater fishes, where they are required to adapt to novel environmental conditions. Our study investigated how species adapt to natural and altered stream flow, where we use the threatened Rocky Mountain Sculpin (Cottus sp.) as a model organism. We compared the swimming and station-holding performance of Rocky Mountain Sculpin from four different hydrologic regimes in Alberta and British Columbia, including the North Milk River, a system that experiences increased flows from a large-scale diversion...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28441217/an-unusual-case-of-sepsis-and-petechial-rash
#10
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/28439469/migratory-orientation-in-a-narrow-avian-hybrid-zone
#11
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/28433728/vector-competence-of-amblyomma-americanum-acari-ixodidae-for-rickettsia-rickettsii
#12
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/28419257/rodent-pika-parasite-spillover-in-western-north-america
#13
Patrick Foley, Tara Roth, Janet Foley, Chris Ray
Competition during the Cenozoic expansion of the Rodentia may have contributed to ecological niche reduction of pikas, which are now increasingly under threat as their habitat degrades under global climate change, while some rodents expand their ranges and overlap with pikas. Range overlap carries the possibility of disease spillover. Contemporary North American pikas are cold-adapted and relegated primarily to alpine environments where they subsist on relatively low-quality herbaceous diet. Yet their evolutionary ancestors were distributed geographically even into the subtropics...
April 15, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28411160/life-on-the-rocks-multilocus-phylogeography-of-rock-hyrax-procavia-capensis-from-southern-africa
#14
K Amanda Maswanganye, Michael J Cunningham, Nigel C Bennett, Christian T Chimimba, Paulette Bloomer
Understanding the role of geography and climatic cycles in determining patterns of biodiversity is important in comparative and evolutionary biology and conservation. We studied the phylogeographic pattern and historical demography of a rock-dwelling small mammal species from southern Africa, the rock hyrax Procavia capensis capensis. Using a multilocus coalescent approach, we assessed the influence of strong habitat dependence and fluctuating regional climates on genetic diversity. We sequenced a mitochondrial gene (cytochrome b) and two nuclear introns (AP5, PRKC1) supplemented with microsatellite genotyping, in order to assess evolutionary processes over multiple temporal scales...
April 11, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28410009/studies-in-the-antrodia-serialis-group-polyporales-basidiomycota
#15
Viacheslav Spirin, Josef Vlasák, Otto Miettinen
Taxonomy and phylogeny of the Antrodia serialis group are revised with morphological, ecological, and geographic data, partial translation elongation factor 1-α (tef1) gene sequences, and nuc rDNA ITS1-5.8S-ITS2-28S sequences. The group contains 13 species found in boreal and temperate zones of the Northern Hemisphere. The species are limited to certain geographic areas within Eurasia and North America. The traditional morphology-based concept of A. serialis covers at least four closely related species: A...
March 1, 2017: Mycologia
https://www.readbyqxmd.com/read/28405298/seasonal-and-temperature-related-movement-of-colorado-river-cutthroat-trout-in-a-low-elevation-rocky-mountain-stream
#16
Brian W Hodge, Kyle D Battige, Kevin B Rogers
Mobile species will migrate considerable distances to find habitats suitable for meeting life history requirements, and stream-dwelling salmonids are no exception. In April-October 2014, we used radio-telemetry to examine habitat use and movement of 36 Colorado River cutthroat trout Oncorhynchus clarkii pleuriticus (CRCT) in a 14.9-km fragment of Milk Creek, a relatively low-elevation stream in the Rocky Mountains (Colorado). We also used a network of data loggers to track stream temperature across time and space...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28388681/mule-deer-spatial-association-patterns-and-potential-implications-for-transmission-of-an-epizootic-disease
#17
María Fernanda Mejía-Salazar, Anne W Goldizen, Clementine S Menz, Ross G Dwyer, Simon P Blomberg, Cheryl L Waldner, Catherine I Cullingham, Trent K Bollinger
Animal social behaviour can have important effects on the long-term dynamics of diseases. In particular, preferential spatial relationships between individuals can lead to differences in the rates of disease spread within a population. We examined the concurrent influence of genetic relatedness, sex, age, home range overlap, time of year, and prion disease status on proximal associations of adult Rocky Mountain mule deer (Odocoileus hemionus hemionus) in a chronic wasting disease endemic area. We also quantified the temporal stability of these associations across different sex, age, and disease status classes...
2017: PloS One
https://www.readbyqxmd.com/read/28374524/legacy-introductions-and-climatic-variation-explain-spatiotemporal-patterns-of-invasive-hybridization-in-a-native-trout
#18
Clint C Muhlfeld, Ryan P Kovach, Robert Al-Chokhachy, Stephen J Amish, Jeffrey L Kershner, Robb F Leary, Winsor H Lowe, Gordon Luikart, Phil Matson, David A Schmetterling, Bradley B Shepard, Peter A H Westley, Diane Whited, Andrew Whiteley, Fred W Allendorf
Hybridization between invasive and native species, a significant threat to worldwide biodiversity, is predicted to increase due to climate-induced expansions of invasive species. Long-term research and monitoring are crucial for understanding the ecological and evolutionary processes that modulate the effects of invasive species. Using a large, multidecade genetics dataset (N = 582 sites, 12,878 individuals) with high-resolution climate predictions and extensive stocking records, we evaluate the spatiotemporal dynamics of hybridization between native cutthroat trout and invasive rainbow trout, the world's most widely introduced invasive fish, across the Northern Rocky Mountains of the United States...
April 4, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28369216/biology-of-scolytus-piceae-coleoptera-curculionidae-scolytinae-in-northern-idaho-and-notes-on-comparative-anatomical-features-of-the-larva
#19
Malcolm M Furniss, Sandra J Kegley
The forests of the northern Rocky Mountains are hosts of nine species of Nearctic conifer-infesting bark beetles of the genus Scolytus Geoffroy. One of these, Scolytus piceae Swaine (Coleoptera: Curculionidae), infests spruces across the continent including Picea engelmannii Parry (Pinaceae) in Idaho. Mature larvae overwintered before transforming to adults, which infested new hosts in early June. Scolytus piceae most commonly infested shaded out lower branches of mature live spruce. In sporadic wind-felled spruce, the beetle infested the terminal portion of branches throughout the crown, whereas another Scolytinae, Polygraphus rufipennis (Kirby), infested the thicker bark basal portion of the same branches...
June 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28365226/rocky-mountain-spotted-fever-in-mexico-past-present-and-future
#20
REVIEW
Gerardo Álvarez-Hernández, Jesús Felipe González Roldán, Néstor Saúl Hernández Milan, R Ryan Lash, Casey Barton Behravesh, Christopher D Paddock
Rocky Mountain spotted fever, a tick-borne zoonosis caused by Rickettsia rickettsii, is among the most lethal of all infectious diseases in the Americas. In Mexico, the disease was first described during the early 1940s by scientists who carefully documented specific environmental determinants responsible for devastating outbreaks in several communities in the states of Sinaloa, Sonora, Durango, and Coahuila. These investigators also described the pivotal roles of domesticated dogs and Rhipicephalus sanguineus sensu lato (brown dog ticks) as drivers of epidemic levels of Rocky Mountain spotted fever...
March 29, 2017: Lancet Infectious Diseases
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