Results 31 to 40 of about 3,884 (159)

Molecular detection of Rickettsia typhi and Rickettsia felis in fleas from Algeria [PDF]

Clinical Microbiology and Infection, 2009
With the exception of the rat flea Xenopsylla cheopis and Yersinia pestis, the agent of plague, fleas and human flea-borne infections have been scarcely studied in Algeria [1]. Murine typhus, a typhus group rickettsiosis caused by Rickettsia typhi and transmitted by X.
Bitam, I., Baziz, B., Kernif, T., Harrat, Z., Parola, P., /Raoult, Didier   +5 more
openaire   +3 more sources

Rickettsia typhi possesses phospholipase A2 enzymes that are involved in infection of host cells.

PLoS Pathogens, 2013
The long-standing proposal that phospholipase A2 (PLA2) enzymes are involved in rickettsial infection of host cells has been given support by the recent characterization of a patatin phospholipase (Pat2) with PLA2 activity from the pathogens Rickettsia ...
M Sayeedur Rahman, Joseph J Gillespie, Simran Jeet Kaur, Khandra T Sears, Shane M Ceraul, Magda Beier-Sexton, Abdu F Azad   +6 more
doaj   +1 more source

Rickettsia-Macrophage Interactions: Host Cell Responses toRickettsia akariandRickettsia typhi [PDF]

Infection and Immunity, 2002
ABSTRACTThe existence of intracellular rickettsiae requires entry, survival, and replication in the eukaryotic host cells and exit to initiate new infection. While endothelial cells are the preferred target cells for most pathogenic rickettsiae, infection of monocytes/macrophages may also contribute to the establishment of rickettsial infection and ...
S, Radulovic, P W, Price, M S, Beier, J, Gaywee, J A, Macaluso, A, Azad   +5 more
openaire   +2 more sources

Murine Typhus in Child, Yucatan, Mexico

Emerging Infectious Diseases, 2009
A case of murine typhus in Yucatan was diagnosed in a child with nonspecific signs and symptoms. The finding of Rickettsia typhi increases the number of Rickettsia species identified in Yucatan and shows that studies are needed to determine the ...
Jorge E. Zavala-Castro, Jorge E. Zavala-Velázquez, Justo Eduardo Sulú Uicab   +2 more
doaj   +1 more source

Seroprevalence of Rickettsia typhi and Rickettsia conorii infections in the Canary Islands (Spain) [PDF]

International Journal of Infectious Diseases, 2011
The aim of this work was to evaluate the prevalence of past infection due to Rickettsia typhi and Rickettsia conorii in the Canary Islands (Spain).A representative sample of the population of the seven islands, formed of 662 people aged between 5 and 75 years (368 females, 294 males), was analyzed.
Bolaños-Rivero, Margarita, Santana-Rodriguez, Évora, Ángel-Moreno, Alfonso, Hernández-Cabrera, Michele, Limiñana-Canal, José-María, Carranza-Rodríguez, Cristina, Martín-Sánchez, Antonio-Manuel, Pérez-Arellano, José-Luis   +7 more
openaire   +3 more sources

Serological evidence of exposure to Rickettsia felis and Rickettsia typhi in Australian veterinarians. [PDF]

Parasit Vectors, 2017
Rickettsia felis and Rickettsia typhi are emerging arthropod-borne zoonoses causing fever and flu-like symptoms. Seroprevalence and risk factors associated with exposure to these organisms was explored in Australian veterinarians.One hundred and thirty-one veterinarians from across Australia were recruited to participate in a cross-sectional survey ...
Teoh YT, Hii SF, Stevenson MA, Graves S, Rees R, Stenos J, Traub RJ.   +6 more
europepmc   +5 more sources

Serosurvey of Rickettsia typhi and Rickettsia felis in HIV‐infected patients [PDF]

Microbiology and Immunology, 2014
ABSTRACTConsistent with the effects of HIV on cell‐mediated immunity, an increased susceptibility to intracellular microorganisms has been observed. Rickettsiae are obligate intracellular microorganisms. The aim of this study was to examine Rickettsia typhi and Rickettsia felis infections in HIV+ population.
María Mercedes, Nogueras, Immaculada, Pons, Isabel, Sanfeliu, Montserrat, Sala, Ferran, Segura   +4 more
openaire   +2 more sources

CONTRIBUTIONS TO RICKETTSIOSES RESEARCH IN COLOMBIA (1917-1943), LUIS B. PATIÑO CAMARGO

Revista do Instituto de Medicina Tropical de São Paulo, 2016
Colombian physician Luis Benigno Patiño Camargo was one of the pioneers in the study of rickettsioses in South America, demonstrating for the first time in Colombia the presence of Rickettsia rickettsii as the etiological agent of a highly deadly ...
Álvaro A. FACCINI-MARTÍNEZ, Carlos A. BOTERO-GARCÍA, Marylin HIDALGO   +2 more
doaj   +3 more sources

Seroprevalence of Rickettsia typhi and Rickettsia felis in dogs from north-eastern Spain [PDF]

Clinical Microbiology and Infection, 2009
Rickettsia typhi is the aetiological agent of murine typhus (MT). This disease is often acute and mild, although some fatal cases have been observed [1]. In Spain, clinical cases and serological evidence of exposure to R. typhi in humans have been described [2,3]. In the past, MT has been associated with rodents and rat fleas.
Nogueras, M.M., Pons, I., Ortuño, A., Segura, F.   +3 more
openaire   +2 more sources

CD4+ T Cells Are as Protective as CD8+ T Cells against Rickettsia typhi Infection by Activating Macrophage Bactericidal Activity. [PDF]

PLoS Neglected Tropical Diseases, 2016
Rickettsia typhi is an intracellular bacterium that causes endemic typhus, a febrile disease that can be fatal due to complications including pneumonia, hepatitis and meningoencephalitis, the latter being a regular outcome in T and B cell-deficient C57BL/
Kristin Moderzynski, Stefanie Papp, Jessica Rauch, Liza Heine, Svenja Kuehl, Ulricke Richardt, Bernhard Fleischer, Anke Osterloh   +7 more
doaj   +1 more source