Tick
Mostrando 25-36 de 726 artigos, teses e dissertações.
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25. Silver and Silver Chloride Nanoparticles and their Anti-Tick Activity: a Mini Review
This overview highlights the importance of characterization of biogenic nanoparticles of silver and silver chloride in order to understand the action on ticks or pathogens transmitted by them. These nanoparticles appear as important active principles in this area. They can act against ticks or against major pathogens transmitted by the bite of ticks such as
J. Braz. Chem. Soc.. Publicado em: 2017-06
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26. An update on the epidemiological situation of spotted fever in Brazil
Abstract Background Spotted fever is a tick-borne rickettsial disease. In Brazil, its notification to the Ministry of Health is compulsory. Since 2007, cases of spotted fever have been integrated to the Notifiable Diseases Information System, and epidemiological analyzes are part of the routines on surveillance programs. Methods This descriptive study up
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 22/09/2016
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27. Fluorescent membrane markers elucidate the association of Borrelia burgdorferi with tick cell lines
This study aimed to describe the association of Borrelia burgdorferi s.s. with ixodid tick cell lines by flow cytometry and fluorescence and confocal microscopy. Spirochetes were stained with a fluorescent membrane marker (PKH67 or PKH26), inoculated into 8 different tick cell lines and incubated at 30°C for 24 h. PKH efficiently stained B. burgdorferi with
Braz J Med Biol Res. Publicado em: 20/06/2016
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28. Rhipicephalus sanguineus (ACARI: IXODIDAE) BITING A HUMAN BEING IN PORTO ALEGRE CITY, RIO GRANDE DO SUL, BRAZIL
We report the finding of a female brown dog tick, Rhipicephalus sanguineus (Acari: Ixodidae) on the scalp of a male patient in Porto Alegre, Rio Grande do Sul, Brazil. Human parasitism by this tick is rare and has seldomly been reported in the literature, despite its recognized importance since it can act as a vector of Rickettsia rickettsii, the agent of sp
Rev. Inst. Med. trop. S. Paulo. Publicado em: 08/04/2016
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29. Rickettsia amblyommii infecting Amblyomma sculptum in endemic spotted fever area from southeastern Brazil
The Rickettsia bacteria include the aetiological agents for the human spotted fever (SF) disease. In the present study, a SF groupRickettsia amblyommii related bacterium was detected in a field collected Amblyomma sculptum (Amblyomma cajennense species complex) tick from a Brazilian SF endemic site in southeastern Brazil, in the municipality of Juiz de Fora,
Mem. Inst. Oswaldo Cruz. Publicado em: 11/12/2015
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30. Bacteria associated with Amblyomma cajennense tick eggs
Abstract Ticks represent a large group of pathogen vectors that blood feed on a diversity of hosts. In the Americas, the Ixodidae ticks Amblyomma cajennense are responsible for severe impact on livestock and public health. In the present work, we present the isolation and molecular identification of a group of culturable bacteria associated with A. cajennens
Genet. Mol. Biol.. Publicado em: 03/11/2015
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31. Arachnids of medical importance in Brazil: main active compounds present in scorpion and spider venoms and tick saliva
Arachnida is the largest class among the arthropods, constituting over 60,000 described species (spiders, mites, ticks, scorpions, palpigrades, pseudoscorpions, solpugids and harvestmen). Many accidents are caused by arachnids, especially spiders and scorpions, while some diseases can be transmitted by mites and ticks. These animals are widely dispersed in u
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 29/09/2015
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32. Seroprevalence of
Borrelia burgdorferi in occupationally exposed persons in the Belgrade area, SerbiaLyme disease (LD) is a natural focal zoonotic disease caused by
Borrelia burgdorferi, which is mainly transmitted through infectedIxodes ricinus tick bites. The presence and abundance of ticks in various habitats, the infectivity rate, as well as prolonged human exposure to ticks are factors that may affect the infectionBraz. J. Microbiol.. Publicado em: 2015-09
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33. Prêmio por informação: uma investigação empírica da microestrutura do mercado acionário do Brasil
ResumoEste artigo estima a probabilidade de informação privilegiada (PIN) para ações do Índice Brasil durante o período de 2006 até 2011. O PIN é uma proxypara informação privada e é incorporado ao método de Fama French (1993) para separar os portfolios e explicar seus retornos. A combinação do PIN com as variáveis valor de mercado e índice b
Estud. Econ.. Publicado em: 2015-09
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34. Brazilian Spotted Fever: the importance of dermatological signs for early diagnosis
Brazilian spotted fever is an acute febrile infectious disease caused by Rickettsia rickettsii, transmitted by tick bite. As this disease is rare and has high mortality rates in Brazil, the clinical aspects and epidemiological data may help the diagnosis. We report a case of Brazilian spotted fever in a 19-year-old patient who presented maculopapular exanthe
An. Bras. Dermatol.. Publicado em: 2015-04
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35. An Alternative and Rapid Method for the Extraction of Nucleic Acids from Ixodid Ticks by Potassium Acetate Procedure
Four variants of the potassium acetate procedure for DNA extraction from ixodid ticks at different stage of their life cycles were evaluated and compared with phenol-chloroform and ammonium hydroxide methods. The most rapid and most efficient variant was validated in the DNA extraction procedure from the engorged ticks collected from bovine, canine as well a
Braz. arch. biol. technol.. Publicado em: 2014-08
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36. Detection of Ehrlichia canis in domestic cats in the central-western region of Brazil
Ehrlichiosis is a worldwide distributed disease caused by different bacteria of the Ehrlichia genus that are transmitted by arthropod vectors. Its occurrence in dogs is considered endemic in several regions of Brazil. Regarding cats, however, few studies have been done and, consequently, there is not enough data available. In order to detect Ehrlichia spp. i
Braz. J. Microbiol.. Publicado em: 2014-06