Results 71 to 80 of about 21,637 (264)

Rickettsia infection in five areas of the state of São Paulo, Brazil

Memorias do Instituto Oswaldo Cruz, 2007
This study investigated rickettsial infection in animals, humans, ticks, and fleas collected in five areas of the state of São Paulo. Eight flea species (Adoratopsylla antiquorum antiquorum, Ctenocephalides felis felis, Polygenis atopus, Polygenis ...
Maurício C Horta, Marcelo B Labruna, Adriano Pinter, Pedro M Linardi, Teresinha T S Schumaker   +4 more
doaj   +1 more source

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.
David Silverman, Charles L. Wisseman
openaire   +3 more sources

Rickettsial spotted fever in capoeirão Village, Itabira, Minas Gerais, Brazil Rickettsiose do grupo da febre maculosa na Vila de Capoeirão, Itabira, Minas Gerais, Brasil

Revista do Instituto de Medicina Tropical de São Paulo, 2008
The present study investigated the infection by spotted fever rickettsia in an endemic area for Brazilian spotted fever (BSF; caused by Rickettsia rickettsii) in Minas Gerais State, Brazil.
Manoella Campostrini Barreto Vianna, Maurício Claudio Horta, Luis Antônio Sangioni, Adriana Cortez, Rodrigo Martins Soares, Cláudio Lisias Mafra, Márcio Antônio Moreira Galvão, Marcelo Bahia Labruna, Solange Maria Gennari   +8 more
doaj   +1 more source

A Metabolic Dependency for Host Isoprenoids in the Obligate Intracellular Pathogen Rickettsia parkeri Underlies a Sensitivity to the Statin Class of Host-Targeted Therapeutics. [PDF]

, 2019
Gram-negative bacteria in the order Rickettsiales have an obligate intracellular growth requirement, and some species cause human diseases such as typhus and spotted fever.
Ahyong, Vida, Berdan, Charles A, Burke, Thomas P, Nomura, Daniel K, Welch, Matthew D   +4 more
core   +2 more sources

Transformation Frequency of a mariner-Based Transposon in Rickettsia rickettsii [PDF]

Journal of Bacteriology, 2011
ABSTRACTTransformation frequencies of amariner-based transposon system inRickettsia rickettsiiwere determined using a plaque assay system for enumeration and isolation of mutants. Sequence analysis of insertion sites in bothR. rickettsiiandR. prowazekiiindicated that insertions were random.
Amanda M. Lackey, Betsy Kleba, David O. Wood, Ted Hackstadt, Erika I. Lutter, Lonnie O. Driskell, Tina R. Clark, Craig Martens   +7 more
openaire   +3 more sources

Newly Recognized Spotted Fever Group Rickettsia as Cause of Severe Rocky Mountain Spotted Fever–Like Illness, Northern California, USA

Emerging Infectious Diseases
The 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, Monica P. Haw, Aran C. Nichol, Carol A. Glaser, Sarah Y. Park, Laura E. Campbell, Kavita K. Trivedi, Hannah Romo, Megan E.M. Saunders, Anne M. Kjemtrup, Kerry A. Padgett, Jill K. Hacker   +11 more
doaj   +1 more source

Evaluation of changes to the Rickettsia rickettsii transcriptome during mammalian infection. [PDF]

PLoS One, 2017
The lifecycle of Rickettsia rickettsii includes infection of both mammalian and arthropod hosts, with each environment presenting distinct challenges to survival. As such, these pathogens likely have distinctive transcriptional strategies for infection of each host.
Riley SP, Pruneau L, Martinez JJ.
europepmc   +6 more sources

Genotypic identification of an undescribed spotted fever group rickettsia in ixodes ricinus from southwestern Spain [PDF]

, 1998
An undescribed rickettsia was directly analyzed with specific rickettsial molecular biology tools on Ixodes ricinus L. collected in different localities of the province of Cadiz (southwestern Spain).
Borobio, M. V., Casimiro-Soriguer Camacho, Ramón, Izquierdo Ayuso, Guillermo, Muniain Ezcurra, Miguel Angel, Márquez, Francisco J., Rodríguez-Baño, Jesús   +5 more
core   +1 more source

Latex-Rickettsia rickettsii test reactivity in seropositive patients [PDF]

Journal of Clinical Microbiology, 1983
In correlating results obtained from a new latex-Rickettsia rickettsii test with results obtained from a reference microimmunofluorescence test for Rocky Mountain spotted fever, we found that for seropositive patients each microimmunofluorescence titer (up to 4,096) was usually double the median titer obtained from the latex-R. rickettsii test.
K E Hechemy, B B Rubin
openaire   +3 more sources

Differences in clinicopathologic variables between Borrelia C6 antigen seroreactive and Borrelia C6 seronegative glomerulopathy in dogs. [PDF]

, 2019
BackgroundRapidly progressive glomerulonephritis has been described in dogs that seroreact to Borrelia burgdorferi, but no studies have compared clinicopathologic differences in Lyme-seroreactive dogs with protein-losing nephropathy (PLN) versus dogs ...
Goldstein RE, Grauer GF, Kalish RA, Levy S, Levy SA, Rolla D, Scorpio DG   +6 more
core   +1 more source