Rickettsiaceae
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Aspectos epidemiológicos dos casos de febre maculosa brasileira ocorridos em Minas Gerais, Brasil, 2000 a 2008
A febre maculosa brasileira é a rickettsiose mais comum do território nacional, com maior importância nos estados de São Paulo e Minas Gerais. O objetivo deste estudo foi descrever os aspectos epidemiológicos dos casos de febre maculosa brasileira ocorridos em Minas Gerais no período de 2000 a 2008. Dos 132 casos confirmados, 53 evoluíram para óbito,
Cadernos de Saúde Pública. Publicado em: 2011-10
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2. Detection and molecular characterization of rickettsiae in humans, potential vectors and domestic animals of southeastern Brazil. / Detecção e caracterização molecular de riquétsias em humanos, potenciais vetores e animais domésticos da região sudeste do Brasil.
This project aimed to diagnose rickettsial diseases using molecular analysis methods on human, tick, flea, dog and horse samples from endemic areas in the States of São Paulo (SP) and Rio de Janeiro (RJ). A diagnosis of Rickettsia rickettsii infecting Amblyomma cajennense and humans in the State of SP was made, indicating that this is the only species respo
Publicado em: 2010
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3. Prevalência de anticorpos contra rickettsias do grupo da febre maculosa em humanos, cães e equinos e identificação molecular de Rickettsia spp em carrapatos na região Norte do Paraná
Brazilian Spotted Fever is a disease transmitted to humans and animals by Amblyomma spp ticks and the most important agent responsible for this disease is R. rickettsii that belongs to the Rickettsiales order and Rickettsiaceae family. The objective of this paper was to study the epidemiology of Brazilian Spotted Fever rickettsias in two rural areas and in h
Publicado em: 2009
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4. Avaliação da biologia e da infecção por Rickettsia rickettsii (Rickettsiales: Rickettsiaceae) em Haemaphysalis leporispalustris (Acari: Ixodidae) utilizando coelho doméstico como hospedeiro. / Evaluation of Haemaphysalis leporispalustris (Acari: Ixodidae) biology and infection for Rickettsia rickettsii (Rickettsiales: Rickettsiaceae) using domestic rabbit as host
Com o objetivo de acrescentar dados sobre a bioecologia de Haemaphysalis leporispalustris e a Febre Maculosa no Brasil, dois estudos foram conduzidos. O primeiro experimento avaliou parâmetros biológicos de ninfas de H. leporispalustris durante e após o parasitismo com o objetivo de relacioná-los com o surgimento de machos ou fêmeas e o parasitismo do s
Publicado em: 2007
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5. Rickettsia felis (Rickettsiales: Rickettsiaceae) em Ctenocephalides felis felis (Siphonaptera: Pulicidae) no estado de São Paulo
Amostras de 10 e 14 pulgas Ctenocephalides felis felis foram coletadas de cães nos municípios de Pedreira e Mogi das Cruzes, respectivamente, no estado de São Paulo, para pesquisa de Rickettsia spp. As pulgas foram individualmente submetidas à reação em cadeia pela polimerase, tendo como alvo os genes 17-kDa e 190-kDa (OmpA) de Rickettsia, sendo esse �
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2005-06
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6. Transformation of Rochalimaea quintana, a member of the family Rickettsiaceae.
Rochalimaea quintana is the only member of the family Rickettsiaceae that can be grown in vitro. Because of its relationship to the other members of this family, techniques developed to transform R. quintana might be applicable to the obligate intracellular bacteria of the Rickettsiaceae. These procedures are critical to understanding mechanisms of pathogene
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7. Phylogenetic diversity of the Rickettsiae.
Small subunit rRNA sequences have been determined for representative strains of six species of the family Rickettsiaceae: Rickettsia rickettsii, Rickettsia prowazekii, Rickettsia typhi, Coxiella burnetii, Ehrlichia risticii, and Wolbachia persica. The relationships among these sequences and those of other eubacteria show that all members of the family Ricket
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8. Q fever.
Q fever is an acute febrile illness first described in 1935 and now seen in many parts of the world. Human infection follows exposure to animals, especially domestic livestock. Recent outbreaks in metropolitan areas have implicated cats as the carrier of disease to humans. The etiologic agent, Coxiella burnetti, belongs to the family Rickettsiaceae, although
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9. Invasion of the Central Nervous System by Intracellular Bacteria
Infection of the central nervous system (CNS) is a severe and frequently fatal event during the course of many diseases caused by microbes with predominantly intracellular life cycles. Examples of these include the facultative intracellular bacteria Listeria monocytogenes, Mycobacterium tuberculosis, and Brucella and Salmonella spp. and obligate intracellula
American Society for Microbiology.
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10. The tribe Ehrlichieae and ehrlichial diseases.
The tribe Ehrlichieae consists of gram-negative minute cocci that are obligate intracellular parasites classified in the family Rickettsiaceae. Although ehrlichial organisms have been observed in leukocytes for many years, only a few species have been cultured in quantities sufficient for biochemical and molecular analyses. Recents studies on 16S-rRNA sequen
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11. Characterization of ehrlichial organisms isolated from a wild mouse.
An infectious agent was isolated from the enlarged spleen of a wild mouse, Eothenomys kageus, by intraperitoneal inoculation of the spleen homogenate into laboratory mice. The laboratory mice developed splenomegaly, and the agent was maintained by serial passage of spleen homogenates in laboratory mice. The agent in the spleen homogenate was inactivated afte
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12. Molecular phylogeny and in situ detection of the etiologic agent of necrotizing hepatopancreatitis in shrimp.
Necrotizing hepatopancreatitis (NHP) is a severe disease of farm-raised Penaeus vannamei that has been associated with mortality losses ranging from 20 to 95%. NHP was first recognized in Texas in 1985 (S. K. Johnson, p. 16, in Handbook of Shrimp Diseases, 1989) and is an economically important disease that has limited the ability to culture shrimp in Texas.