Results 21 to 30 of about 1,338 (118)
Role of Sca2 and RickA in the Dissemination of Rickettsia parkeri in Amblyomma maculatum. [PDF]
Infection and Immunity, 2018 Kevin R Macaluso, Matthew D Welch
exaly +2 more sources
Ecosphere, Volume 14, Issue 3, March 2023., 2023 Abstract Increasingly, geographic approaches to assessing the risk of tick‐borne diseases are being used to inform public health decision‐making and surveillance efforts. The distributions of key tick species of medical importance are often modeled as a function of environmental factors, using niche modeling approaches to capture habitat suitability ...
Catherine A. Lippi +4 more
wiley +1 more source
Current Protocols, Volume 2, Issue 11, November 2022., 2022 Abstract The guinea pig was the original animal model developed for investigating spotted fever rickettsiosis (SFR). This model system has persisted on account of the guinea pig's conduciveness to tick transmission of SFR agents and ability to recapitulate SFR in humans through clinical signs that include fever, unthriftiness, and in some cases the ...
John V. Stokes +7 more
wiley +1 more source
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 +5 more
wiley +1 more source
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 +8 more
doaj +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 +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 +3 more
wiley +1 more source
Revista do Instituto de Medicina Tropical de São Paulo, 2009 We report three new rickettsiosis human cases in Uruguay. The three clinical cases presented clinical manifestations similar to previous reported cases of Rickettsia parkeri in the United States; that is mild fever (< 40 ºC), malaise, headache, rash ...
Ismael A. Conti-Díaz +3 more
doaj +1 more source
Expression of an epitope-tagged virulence protein in Rickettsia parkeri using transposon insertion. [PDF]
PLoS ONE, 2012 Despite recent advances in our ability to genetically manipulate Rickettsia, little has been done to employ genetic tools to study the expression and localization of Rickettsia virulence proteins.
Matthew D Welch +3 more
doaj +1 more source
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 +5 more
wiley +1 more source