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Full-Text Articles in Veterinary Medicine
Identification And Characterization Of A Relish-Type Nf-Kb, Dvrelish In Dermacentor Variabilis, The American Dog Tick, Victoria Irene Verhoeve
Identification And Characterization Of A Relish-Type Nf-Kb, Dvrelish In Dermacentor Variabilis, The American Dog Tick, Victoria Irene Verhoeve
LSU Doctoral Dissertations
Ticks are important worldwide as vectors of bacteria, viruses, and parasites. Pathogenic and non-pathogenic Spotted fever group (SFG) Rickettsia are maintained and transmitted by ticks with specific hard tick-Rickettsia pairings evident in nature. The pathogenic SFG Rickettsia rickettsii is transmitted by the hard tick Dermacentor variabilis. In response to infection, D. variabilis is known differentially respond to SFG Rickettsia infection. The mechanisms of differential immune induction are currently unknown, and are likely involved in the establishment of specific tick-SFG Rickettsia pairings. It was hypothesized that the level of response by D. variabilis to SFG Rickettsia occurs in a species-specific manner, …
Signal Transduction And Rickettsial Infection Of Tick Cells, Natthida Petchampai
Signal Transduction And Rickettsial Infection Of Tick Cells, Natthida Petchampai
LSU Doctoral Dissertations
Spotted fever group (SFG) Rickettsia are obligate intracellular bacteria that are carried by ticks. One such tick, Dermacentor variabilis is a vector for the etiologic agent of Rocky Mountain spotted fever, R. rickettsii. These ticks also carry a non-pathogenic R. montanensis, the agent used in this study. Interestingly, field data collected from infected D. variabilis throughout the United States revealed that the majority of Rickettsia in ticks are non-pathogenic species such as R. montanensis. Although ticks serve as both vector and reservoir hosts for SFG Rickettsia, many questions regarding tick-Rickettsia interaction remain unresolved. Therefore, the overall goal of this research …
Development And Characterization Of A Murine Model Of Rickettsia Parkeri Rickettsiosis, Britton Grasperge
Development And Characterization Of A Murine Model Of Rickettsia Parkeri Rickettsiosis, Britton Grasperge
LSU Doctoral Dissertations
Rickettsia parkeri, a member of the spotted fever group of Rickettsia, is the agent of an emerging rickettsiosis in the southeastern United States and South America. Despite increased recognition of human cases, limited information is available regarding infection of invertebrate and vertebrate hosts for this emerging tick-borne disease. Towards development of a viable transmission model and to further characterize the pathology associated with R. parkeri infection, inbred mouse strains (A/J, Balb/C, C3H/HeJ, and C3H/HeN) were intravenously and intradermally inoculated with R. parkeri. The C3H/HeJ strain of mice were identified as the most susceptible to R. parkeri infection and were found …