Rickettsia parkeri in Amblyomma dubitatum ticks in a spotted fever focus from the Brazilian Pampa.
Sign Up to like & getrecommendations! Published in 2017 at "Acta tropica"
DOI: 10.1016/j.actatropica.2017.03.028
Abstract: Spotted fever is an acute febrile illness, which is considered severely underreported and misdiagnosed in the Brazilian Pampa, caused by tick-borne Rickettsiae. Here, we report an eco-epidemiological investigation of Rickettsia spp. in ticks from a… read more here.
Keywords: parkeri; dubitatum ticks; rickettsia; spotted fever ... See more keywords
Experimental infection of Rickettsia parkeri in the Rhipicephalus microplus tick.
Sign Up to like & getrecommendations! Published in 2018 at "Ticks and tick-borne diseases"
DOI: 10.1016/j.ttbdis.2017.10.003
Abstract: This study aimed to evaluate, by means of artificial feeding, the interaction between a pathogenic rickettsia and the hard tick R. microplus. We used partially engorged females fed on calves free of Rickettsia spp. Group… read more here.
Keywords: rickettsia parkeri; tick; parkeri; experimental infection ... See more keywords
Host glutathione is required for Rickettsia parkeri cell division and intracellular survival
Sign Up to like & getrecommendations! Published in 2025 at "Nature Communications"
DOI: 10.1038/s41467-025-60509-7
Abstract: Intracellular bacteria rely on eukaryotic metabolites for their fitness and pathogenesis. Yet, the mechanisms of how host metabolites promote bacterial physiology and immune evasion are often unclear. Here, we employed obligate cytosolic Rickettsia parkeri, which… read more here.
Keywords: rickettsia; survival; host; cell ... See more keywords
Surveillance for Amblyomma maculatum (Acari: Ixodidae) and Rickettsia parkeri (Rickettsiales: Rickettsiaceae) in the State of Delaware, and Their Public Health Implications
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Medical Entomology"
DOI: 10.1093/jme/tjz255
Abstract: Abstract Amblyomma maculatum Koch is the primary vector of Rickettsia parkeri, the etiologic agent of tidewater spotted fever, and can also carry and transmit a variety of other pathogens. This tick historically has been a… read more here.
Keywords: state; rickettsia parkeri; parkeri; amblyomma maculatum ... See more keywords
Critical roles of Rickettsia parkeri outer membrane protein B (OmpB) in the tick host
Sign Up to like & getrecommendations! Published in 2024 at "Infection and Immunity"
DOI: 10.1128/iai.00515-23
Abstract: ABSTRACT Rickettsia parkeri is a pathogen of public health concern and transmitted by the Gulf Coast tick, Amblyomma maculatum. Rickettsiae are obligate intracellular bacteria that enter and replicate in diverse host cells. Rickettsial outer membrane… read more here.
Keywords: parkeri ompbstop; host; wild type; infection ... See more keywords
Rickettsia parkeri hijacks tick hemocytes to manipulate cellular and humoral transcriptional responses
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Immunology"
DOI: 10.3389/fimmu.2023.1094326
Abstract: Blood-feeding arthropods rely on robust cellular and humoral immunity to control pathogen invasion and replication. Tick hemocytes produce factors that can facilitate or suppress microbial infection and pathogenesis. Despite the importance of hemocytes in regulating… read more here.
Keywords: rickettsia parkeri; tick hemocytes; hijacks tick; parkeri hijacks ... See more keywords
The Ixodes scapularis Symbiont Rickettsia buchneri Inhibits Growth of Pathogenic Rickettsiaceae in Tick Cells: Implications for Vector Competence
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Veterinary Science"
DOI: 10.3389/fvets.2021.748427
Abstract: Ixodes scapularis is the primary vector of tick-borne pathogens in North America but notably does not transmit pathogenic Rickettsia species. This tick harbors the transovarially transmitted endosymbiont Rickettsia buchneri, which is widespread in I. scapularis… read more here.
Keywords: buchneri; infection; tick cells; tick ... See more keywords
‘Candidatus Rickettsia andeanae’ and Probable Exclusion of Rickettsia parkeri in Ticks from Dogs in a Natural Area of the Pampa Biome in Brazil
Sign Up to like & getrecommendations! Published in 2023 at "Pathogens"
DOI: 10.3390/pathogens12030446
Abstract: Spotted fever illness caused by the tick-borne pathogen Rickettsia parkeri has emerged in the Pampa biome in southern Brazil, where the tick Amblyomma tigrinum is implicated as the main vector. Because domestic dogs are commonly… read more here.
Keywords: tigrinum; exclusion; pampa biome; brazil ... See more keywords