Results 51 to 60 of about 1,833 (165)

Whole-Genome Sequence of Rickettsia parkeri Strain Atlantic Rainforest, Isolated from a Colombian Tick. [PDF]

Microbiol Resour Announc, 2019
Rickettsia parkeri is classified as a member of the alphaproteobacterial microorganisms, genus Rickettsia Here, we report the complete genome sequence of Rickettsia parkeri strain Atlantic Rainforest, which was isolated from an Amblyomma ovale tick ...
Londoño AF, Mendell NL, Valbuena GA, Routh AL, Wood TG, Widen SG, Rodas JD, Walker DH, Bouyer DH.   +8 more
europepmc   +2 more sources

Spotted Fever: An Undercover Cause of Hemophagocytic Lymphohistiocytosis in the Immediate Postpartum

Case Reports in Infectious Diseases, Volume 2022, Issue 1, 2022., 2022
Hemophagocytic lymphohistiocytosis (HLH) is characterized by a dysregulated activation of the immune system that causes fever, cytopenias, organomegalies, and hemophagocytosis. There are infectious, neoplastic, rheumatologic, and miscellaneous causes. Rickettsioses are a neglected cause of HLH.
Karen Aida Ibarra Stone, Jose Gabriel Solis, Enrique Blanco-Lemus, Jose Malagón-Rangel, Guadalupe Gordillo-Perez, Dawei Cui   +5 more
wiley   +1 more source

Association between Growth Rate and Pathogenicity of Spotted Fever Group Rickettsia

Journal of Pure and Applied Microbiology, 2022
Rickettsia parkeri and Rickettsia amblyommatis are spotted fever group Rickettsia (SFGR) associated with Amblyomma ticks. R. parkeri is a recognized human pathogen that causes an eschar-associated febrile illness, while R.
Apichai Bourchookarn, Christopher D. Paddock, Kevin R. Macaluso, Walairat Bourchookarn   +3 more
doaj   +1 more source

Contribution of classical complement activation and IgM to the control of Rickettsia infection

Molecular Microbiology, Volume 116, Issue 6, Page 1476-1488, December 2021., 2021
Pathogenic Rickettsia are extremely dangerous bacteria that parasitize the cytoplasm of the mammalian vasculature. Due to the serious nature of these infections, it is imperative to both identify the responsive immune sensory pathways and understand the associated immune mechanisms that restrict bacterial growth.
Mustapha Dahmani, Jack H. Cook, Jinyi C. Zhu, Sean P. Riley   +3 more
wiley   +1 more source

Molecular identification of Theileria equi, Babesia caballi, and Rickettsia in adult ticks from North of Xinjiang, China

Veterinary Medicine and Science, Volume 7, Issue 6, Page 2219-2224, November 2021., 2021
One hundred nineteen tick samples obtained from horses in Xinjiang, China, to investigate the situation of pathogens by hard ticks. Theileria equi was detected in 1 tick, Babesia caballi was detected in 18 ticks. Among this, the mixed carriage rate of Theileria equi and Rickettsia was 0.8% (1/119), the mixed carriage rate of Babesia caballi and ...
Yang Zhang, Xiuxiu Wen, Peipei Xiao, Xinli Fan, Min Li, Bayin Chahan   +5 more
wiley   +1 more source

Serosurvey on rickettsiae of the spotted fever group and Rickettsia bellii among dogs in the state of Goiás, Brazil

Revista Brasileira de Parasitologia Veterinária, 2020
The purpose of this study was to do a serological survey on three rickettsial species: Rickettsia rickettsii and Rickettsia parkeri, two species of the spotted fever group (SFG) that are considered to be great importance for public health; and Rickettsia
Lucianne Cardoso Neves, Ana Laura Gonçalves Barreto, Mariana Xavier de Souza, Danieli Brolo Martins, Amália Regina Mar Barbieri, Maria Carolina de Azevedo Serpa, Sebastián Muñoz-Leal, Marcelo Bahia Labruna, Felipe da Silva Krawczak   +8 more
doaj   +1 more source

Experimental infection of Monodelphis domestica with Rickettsia parkeri

Ticks and Tick-borne Diseases, 2020
This study aimed to evaluate the infection of the marsupial Monodelphis domestica (the gray short-tailed opossum) by Rickettsia parkeri and its role as an amplifier of the bacterium for Amblyomma ticks. Ten M. domestica males were inoculated with phosphate-buffered saline (PBS) and 106 Vero cells infected with R. parkeri.
Matheus, Dias Cordeiro, Bruna, de Azevedo Baêta, Marcio, Barizon Cepeda, Adivaldo Henrique, da Fonseca   +3 more
openaire   +2 more sources

Proteomic Analysis of Rickettsia parkeri Strain Portsmouth [PDF]

Infection and Immunity, 2009
ABSTRACT Rickettsia parkeri , a recently recognized pathogen of human, is one of several Rickettsia spp. in the United States that causes a spotted fever rickettsiosis. To gain insights into its biology and pathogenesis, we applied the proteomics approach to establish a two-dimensional gel ...
Walairat, Pornwiroon, Apichai, Bourchookarn, Christopher D, Paddock, Kevin R, Macaluso   +3 more
openaire   +2 more sources

Significant Growth by Rickettsia Species within Human Macrophage-Like Cells Is a Phenotype Correlated with the Ability to Cause Disease in Mammals

Pathogens, 2021
Rickettsia are significant sources of tick-borne diseases in humans worldwide. In North America, two species in the spotted fever group of Rickettsia have been conclusively associated with disease of humans: Rickettsia rickettsii, the causative agent of ...
M. Nathan Kristof, Paige E. Allen, Lane D. Yutzy, Brandon Thibodaux, Christopher D. Paddock, Juan J. Martinez   +5 more
doaj   +1 more source

Comparative growth of spotted fever group Rickettsia spp. strains in Vero cells

Memorias do Instituto Oswaldo Cruz, 2016
In Brazil, the spotted fever group (SFG) Rickettsia rickettsii and Rickettsia parkeri related species are the etiological agents of spotted fever rickettsiosis. However, the SFG, Rickettsia rhipicephali, that infects humans, has never been reported.
Arannadia Barbosa Silva, Myrian Morato Duarte, Vinicius Figueiredo Vizzoni, Ana Íris de Lima Duré, Diego Montenegro Lopéz, Rita de Maria Seabra Nogueira, Carlos Augusto Gomes Soares, Erik Machado-Ferreira, Gilberto Salles Gazêta   +8 more
doaj   +1 more source