Emerging Infectious DiseasesThe incidence of spotted fever group (SFG) rickettsioses in the United States has tripled since 2010. Rocky Mountain spotted fever, the most severe SFG rickettsiosis, is caused by Rickettsia rickettsii.
Will S. Probert +11 more
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MicroRNA Signature of Human Microvascular Endothelium Infected with Rickettsia rickettsii. [PDF]
Int J Mol Sci, 2017 Sahni A, Narra HP, Patel J, Sahni SK.
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Comparative ultrastructural study on the cell envelopes of Rickettsia prowazekii, Rickettsia rickettsii, and Rickettsia tsutsugamushi [PDF]
Infection and Immunity, 1978 Rickettsia tsutsugamushi differs from other rickettsiae in its cell envelope organization. The differences were made evident through a comparative study of the outer envelope of R. tsutsugamushi, R. prowazekii, and R. rickettsii by electron microscopy.
D J, Silverman, C L, Wisseman
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Identificação sorológica de Rickettsia spp do grupo da febre maculosa em capivaras na região de Campinas, SP, Brasil [PDF]
, 2008 Diseases transmitted by ticks have been an important health problem all over the world. Brazilian Spotted Fever (BSF) stands for a serious epidemiological concern due to the high mortality rates pointed out.
CALIC, Simone Berger +8 more
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Human endothelial cell culture plaques induced by Rickettsia rickettsii [PDF]
Infection and Immunity, 1982 Primary cultures of human umbilical vein endothelial cells were inoculated with plaque-purified Rickettsia rickettsii. After adsorption of rickettsiae, monolayers were overlaid with medium containing 0.5% agarose. Small plaques appeared on day 4 postinoculation, and distinct 1- to 2-mm plaques were observed on day 5.
D H, Walker, W T, Firth, C J, Edgell
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Rickettsia rickettsii isolation from naturally infected Amblyomma parvum ticks by centrifugation in a 24-well culture plate technique [PDF]
Open Veterinary Journal, 2013 Rocky Mountain spotted fever is an acute illness caused by Rickettsia rickettsii (R. rickettsii) and is transmitted by the bite of ticks of the genera Dermacentor, Amblyomma and Rhipicephalus.
K. Dzul-Rosado +7 more
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Revista Brasileira de Parasitologia Veterinária, 2011 This study reports rickettsial infection in Amblyomma cajennense and Amblyomma dubitatum ticks collected in an area of the state of Minas Gerais, Brazil, where Brazilian spotted fever is considered endemic. For this purpose, 400 adults of A.
Elizângela Guedes +4 more
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Heparin protects human endothelial cells infected by Rickettsia rickettsii [PDF]
Infection and Immunity, 1991 Routine culture of endothelial cells currently includes the use of heparin, which significantly reduces cell doubling time and increases cell population size. Heparin protects cultured arterial endothelial cells from damage by toxic oxygen metabolites produced by the action of xanthine and xanthine oxidase.
D J, Silverman +2 more
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Detection of " sp. strain Uilenbergi" and " sp. strain Davousti" in ticks from elephants in Africa [PDF]
, 2007 Background: To date, 6 tick-borne rickettsiae pathogenic for humans are known to occur in Africa and 4 of them were first identified in ticks before being recognized as human pathogens.
Kotaro Matsumoto +4 more
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Veterinary Clinical Pathology, EarlyView.ABSTRACT A 3‐year‐old female‐intact German Shepherd presented for the evaluation of progressive shifting leg lameness, carpal swelling, and weight loss with a poor appetite since adoption about three months prior. Routine blood smear evaluation, lymph node, and synovial fluid cytologies all revealed rare neutrophils with cytoplasmic inclusions ...
Samantha L. Braman +3 more
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