4 documents found, page 1 of 1
Detection of Rickettsia conorii strains in Portuguese dogs (Canis familiaris)
Alexandre, Nuno; Santos, AS; Bacellar, F; Boinas, FJ; Núncio, MS; De Sousa, RThis study reports a serological and molecular survey on the spotted fever group Rickettsia found in a group of 51 dogs with suspected tick-borne illness from the south of Portugal. Additionally, a prevalence of IgG antibodies to R. conorii was also estimated in a group of 400 healthy dogs from the same region. In the group of healthy dogs, the immunofluorescence test revealed that 154 (38.5%) of the 400 dogs h...
Host- and microbe-related risk factors for and pathophysiology of fatal Rickett...
Sousa, R; França, A; Nóbrega, SD; Belo, A; Amaro, M; Abreu, T; Poças, J; Proença, P; Vaz, J; Torgal, J; Bacellar, F; Ismail, N; Walker, DBACKGROUND: The pathophysiologic mechanisms that determine the severity of Mediterranean spotted fever (MSF) and the host-related and microbe-related risk factors for a fatal outcome are incompletely understood. METHODS: This prospective study used univariate and multivariate analyses to determine the risk factors for a fatal outcome for 140 patients with Rickettsia conorii infection admitted to 13 Portuguese h...
Intralesional expression of mRNA of interferon- gamma, tumor necrosis factor- a...
Sousa, R; Ismail, N; Nóbrega, SD; França, A; Amaro, M; Anes, M; Poças, J; Coelho, R; Torgal, J; Bacellar, F; Walker, DBACKGROUND: The mechanisms of immunity to Rickettsia conorii that have been elucidated in mouse models have not been evaluated in human tissues. METHODS: In this study, quantitative real-time polymerase chain reaction was used to determine the levels of expression of inflammatory and immune mediators in skin-biopsy samples collected from 23 untreated patients with Mediterranean spotted fever (MSF). RESULTS: In ...
Bacillary Angiomatosis by Bartonella Quintana in an HIV-Infected Patient
Santos, R; Cardoso, O; Rodrigues, P; Cardoso, J; Machado, J; Afonso, A; Bacellar, F; Marston, E; Proença, RBacillary angiomatosis and bacillary peliosis are opportunistic infections caused by Bartonella henselae and Bartonella quintana, which occur in patients with late-stage infection. We report a case of bacillary angiomatosis in an HIV-infected patient with skin, bone, and probably liver involvement, The identification of the agent (B quintana ) was done by polymerase chain reaction in the skin specimen. The pati...