Results 21 to 30 of about 66,524 (305)

A patatin-like phospholipase mediates Rickettsia parkeri escape from host membranes

Nature Communications, 2021
Rickettsia species of the spotted fever group are arthropod-borne obligate intracellular bacteria that can cause mild to severe human disease. These bacteria invade host cells, replicate in the cell cytosol, and spread from cell to cell.
G. Borgo, Thomas P. Burke, Cuong J. Tran, Nicholas T. N. Lo, Patrik Engström, M. Welch   +5 more
semanticscholar   +1 more source

THE CYTOLOGY OF RICKETTSIAE [PDF]

Journal of Experimental Medicine, 1949
Internal structures of rickettsiae seen with phase contrast microscopy and in the electron microscope contain desoxyribonucleic acid and are therefore nuclear structures similar to those found in bacteria. They are minute spherical bodies, either single as in spherical rickettsiae or varying in number from 2 to 4 in rod-shaped forms.
Hans Ris, John P. Fox
openaire   +3 more sources

Inactivation of rickettsiae [PDF]

European Journal of Microbiology and Immunology, 2013
A reliable and complete inactivation is an indispensable premise for any concentration of rickettsiae or for the development of diagnostic strategies based on their antigens. This study deals with the testing of methods to inactivate rickettsiae. Rickettsia honei was used as a model organism.
Gerhard Dobler, Hagen Frickmann
openaire   +3 more sources

Molecular detection of Rickettsia in fleas from micromammals in Chile

Parasites & Vectors, 2020
Background Rickettsial diseases are considered important in public health due to their dispersal capacity determined by the particular characteristics of their reservoirs and/or vectors.
Lucila Moreno-Salas, Mario Espinoza-Carniglia, Nicol Lizama-Schmeisser, Luis Gonzalo Torres-Fuentes, María Carolina Silva-de La Fuente, Marcela Lareschi, Daniel González-Acuña   +6 more
doaj   +1 more source

Transovarial transmission of Borrelia spp., Rickettsia spp. and Anaplasma phagocytophilum in Ixodes ricinus under field conditions extrapolated from DNA detection in questing larvae

Parasites & Vectors, 2020
Ixodes ricinus constitutes the main European vector tick for the Lyme borreliosis pathogen Borrelia burgdorferi (sensu lato), the relapsing fever borrelia Borrelia miyamotoi, as well as Anaplasma phagocytophilum and several Rickettsia species.
D. Hauck, D. Jordan, A. Springer, B. Schunack, S. Pachnicke, V. Fingerle, C. Strube   +6 more
semanticscholar   +1 more source

Dissemination of spotted fever rickettsia agents in Europe by migrating birds. [PDF]

PLoS ONE, 2010
Migratory birds are known to play a role as long-distance vectors for many microorganisms. To investigate whether this is true of rickettsial agents as well, we characterized tick infestation and gathered ticks from 13,260 migratory passerine birds in ...
Karin Elfving, Björn Olsen, Sven Bergström, Jonas Waldenström, Ake Lundkvist, Anders Sjöstedt, Hans Mejlon, Kenneth Nilsson   +7 more
doaj   +1 more source

Parasitoid-mediated horizontal transmission of Rickettsia between whiteflies

Frontiers in Cellular and Infection Microbiology, 2023
Intracellular bacterial endosymbionts of arthropods are mainly transmitted vertically from mother to offspring, but phylogenetically distant insect hosts often harbor identical endosymbionts, indicating that horizontal transmission from one species to ...
Yuan Liu, Yuan Liu, Yuan Liu, Zi-Qi He, Zi-Qi He, Qin Wen, Qin Wen, Jing Peng, Jing Peng, Yu-Tong Zhou, Yu-Tong Zhou, Nasser Mandour, Cindy L. McKenzie, Muhammad Z. Ahmed, Bao-Li Qiu, Bao-Li Qiu, Bao-Li Qiu   +16 more
doaj   +1 more source

Detection of Rickettsia hoogstraalii , Rickettsia helvetica , Rickettsia massiliae , Rickettsia slovaca and Rickettsia aeschlimannii in ticks from Sardinia, Italy

Ticks and Tick-borne Diseases, 2017
Tick-borne diseases represent a large proportion of infectious diseases that have become a world health concern. The presence of Rickettsia spp. was evaluated by standard PCR and sequencing in 123 ticks collected from several mammals and vegetation in Sardinia, Italy.
Chisu, Valentina, Leulmi, Hamza, Masala, Giovanna, Piredda, Mariano, Foxi, Cipriano, Parola, Philippe   +5 more
openaire   +3 more sources

Acute febrile illness is associated with Rickettsia spp infection in dogs [PDF]

, 2015
BACKGROUND: Rickettsia conorii is transmitted by Rhipicephalus sanguineus ticks and causes Mediterranean Spotted Fever (MSF) in humans. Although dogs are considered the natural host of the vector, the clinical and epidemiological significance of R ...
A Cascio, A Estrada-Pena, A Mannelli, A Mura, A Ortuno, A Rojas, A Torina, A Torina, A Torina, A Znazen, Alessandra Caprì, AM Gasser, BA Stillman, C Colomba, C Riera, C Rovery, CP Ober, D Otranto, D Otranto, D Otranto, E Beeler, E Sanger, EB Breitschwerdt, F Segura-Porta, FJ Marquez, G Baneth, G Baneth, G Baneth, G Vitale, GB Andrade, GM Giammanco, GM Giammanco, H Inokuma, J Fuente de la, JC Garcia-Garcia, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, Laia Solano-Gallego, M Bernabeu-Wittel, M Rene-Martellet, M Sarih, Marco Caldin, Maria Grazia Pennisi, ME Eremeeva, ME Mylonakis, Michele Trotta, ML Levin, ML Levin, N Alexandre, N Cardenosa, NY Salem, P Brouqui, P Brouqui, P Parola, P Parola, PJ Kelly, S Delgado, S Harrus, S Harrus, S Santibanez, SE Little, T Beninati, T Furlanello, Tommaso Furlanello, WL Nicholson   +69 more
core   +2 more sources

Infecção por riquétsias em carrapatos de aves silvestres em duas ecorregiões da Argentina [PDF]

, 2016
Several tick-borne Rickettsia species are recognized human pathogens in Argentina. Here we evaluated rickettsial infection in ticks collected on passerine birds during 2011-2012 in two eco-regions of Argentina.
Borges Costa, Francisco, Diaz, Luis Adrian, Flores, Fernando Sebastián, Labruna, Marcelo Bahía, Nava, Santiago   +4 more
core   +1 more source