occurrence of anti-toxoplasma gondii antibodies in dogs in the urban area of monte negro, rondônia, brazil. | the prevalence of anti-toxoplasma gondii antibodies in dogs in an urban area of the municipality of monte negro, rondônia, brazil, was evaluated using an indirect immunofluorescent antibody test (ifat). blood samples were taken from 157 dogs living in 85 of the 94 blocks of the city. a seropositivity of 76.4% (120/157) was found and associations between the prevalence and the variables sex, age, type of raising and food were studied. the prevalence tended to increase with age (p < 0.05); dogs ov ... | 2004 | 14992241 |
a preliminary investigation of ehrlichia species in ticks, humans, dogs, and capybaras from brazil. | a molecular epidemiologic investigation in two brazilian states (rondônia and são paulo) was undertaken to determine if ehrlichia species responsible for human and animal ehrlichioses in north america could be found in brazilian vectors, potential natural mammalian reservoirs and febrile human patients with a tick bite history. samples, including 376 ticks comprising 9 amblyomma species, 29 capybara (hydrochaeris hydrochaeris) spleens, 5 canine blood, and 75 human blood samples from febrile pati ... | 2007 | 16962245 |
prevalence of ehrlichia canis (rickettsiales: anaplasmataceae) in dogs and rhipicephalus sanguineus (acari: ixodidae) ticks from brazil. | the current study evaluated the prevalence of ehrlichia canis donatien and lestoquard in domestic dogs, canis familiaris l., and rhipicephalus sanguineus (latreille) (acari: ixodidae) ticks from different areas of brazil. in monte negro county (state of rondônia, brazilian western amazon), the indirect immunofluorescence assay detected e. canis-reactive antibodies (titer > or = 40) in 58/153 (37.9%) and 40/161 (24.8%) dogs from the urban and rural areas, respectively. these values were significa ... | 2007 | 17294930 |
prevalence of anti-neospora caninum antibodies in cattle and dogs from western amazon, brazil, in association with some possible risk factors. | for evaluation of the prevalence of anti-neospora caninum antibodies and its associated risk factors, serum samples from 2109 cattle (11 beef, 50 dairy and 25 mixed farms) and 174 dogs were examined in the state of rondônia, western amazon, brazil. an inquiry was applied in each farm. sera were examined by the indirect fluorescence antibody test (ifat) using cut off dilution of 1:25 for cattle and 1:50 for dogs. statistical association between the serologic status and several variables were anal ... | 2006 | 16857319 |
prevalence of antibodies to neospora caninum in dogs from amazon, brazil. | neospora caninum is an important cause of abortion in dairy cattle worldwide. dogs are important in the epidemiology of this parasite because they are the only hosts known to excrete n. caninum oocysts. antibodies to n. caninum were assayed in serum samples from 157 dogs from monte negro, rondônia, amazon, brazil using the indirect fluorescent antibody test. antibodies to n. caninum were found in 13 (8.3%) of dogs in titers of 1:50 in 1, 1:100 in 2, 1:200 in 5, 1:800 in 1, 1:1600 in 2, and 1:320 ... | 2003 | 12860070 |
gynandromorphism in amblyomma cajennense and rhipicephalus sanguineus (acari: ixodidae). | during a survey of ticks on horses in november 2000, at the university of são paulo farm in pirassununga county, são paulo, brazil, 1 gynandromorph of amblyomma cajennense was collected from a naturally infested horse. in another survey on dogs in march 2001, in the urban area of monte negro, rondônia, brazil, a gynandromorph of rhipicephalus sanguineus was collected from a naturally infested dog. both specimens are described and classified as perfect bipartite protogynanders. | 2002 | 12197141 |
an autochthonous case of echinococcus vogeli rausch & bernstein, 1972 polycystic echinococcosis in the state of rondônia, brazil. | the present case report refers to a patient from the state of rondônia, north region of brazil, attended with clinical suspicion of hepatic echinococcosis. examination by imaging (ultrasonography and computerized tomography) revealed a conglomerate of cystic lesions, with mobile contents within the cyst. the serology (immunoblot) for echinococcus sp. was positive (21 and 31 kda bands). this case is the first reported in rondônia, suggesting the need to investigate the polycystic echinococcosis i ... | 2002 | 11992162 |
seroprevalence of anti-leishmania spp. antibodies in rural dogs from the city of monte negro, state of rondônia, brazil. | the present study assessed the prevalence of anti-leishmania spp. antibodies in dogs from the city of monte negro, state of rondônia, brazil. elisa (ne ≥ 3) and ifat (≥ 1:40) were used to evaluate 161 serum samples collected from rural dogs from monte negro. forty-five (27.9%) dogs were positive by elisa tests and five (3.1%) were positive by ifat. the present study showed for the first time the frequency of exposure to leishmania spp. in dogs in the state of rondônia, amazon region. | 2010 | 20385065 |
tesa-blot for the diagnosis of chagas disease in dogs from co-endemic regions for trypanosoma cruzi, trypanosoma evansi and leishmania chagasi. | we standardized serodiagnosis of dogs infected with trypanosoma cruzi using tesa (trypomastigote excreted-secreted antigen)-blot developed for human chagas disease. tesa-blot showed 100% sensitivity and specificity. in contrast, elisa using tesa (tesa-elisa) or epimastigotes (epi-elisa) as antigen yielded 100% sensitivity but specificity of 94.1% and 49.4%, respectively. when used in field studies in an endemic region for chagas disease, visceral leishmaniasis and trypanosoma evansi (mato grosso ... | 2009 | 19426657 |
[drop off rhythm of rhipicephalus sanguineus (acari: ixodidae) of artificially infested dogs]. | the present study evaluated the drop-off rhythm of rhipicephalus sanguineus (latreille) ticks from two populations from brazil, one from monte negro, state of rondônia, and another from belo horizonte, state of minas gerais. artificial infestations with ticks were performed on dogs in the laboratory, held in a light: scotophase regimen of 12:12 h. larval drop-off rhythm was characterized by similar number of engorged larvae detaching during both periods of light and scotophase, or by a larger nu ... | 2008 | 19245759 |
malassezia spp. in acoustic meatus of bats (molossus molossus) of the amazon region, brazil. | the yeasts of the malassezia genus are opportunistic microorganisms and can cause human and animal infections. they are commonly isolated from the skin and auricular canal of mammalians, mainly dogs and cats. the present study was aimed to isolate malassezia spp. from the acoustic meatus of bats (molossus molossus) in the montenegro region, "rondônia", brazil. from a total of 30 bats studied malassezia spp. were isolated in 24 (80%) animals, the breakdown by species being as follows (one malasse ... | 2008 | 18046623 |
prevalence of rickettsia infection in dogs from the urban and rural areas of monte negro municipality, western amazon, brazil. | the present study evaluated the rickettsial infection among dogs living in the rural and urban areas of monte negro, state of rondônia, western brazilian amazon. canine sera were tested by the indirect immunofluorescence assay (ifa) using six rickettsial antigens: rickettsia bellii, rickettsia amblyommii, rickettsia rhipicephali, rickettsia rickettsii, rickettsia parkeri, and rickettsia felis. while the first three rickettsia species are known to occur in the study site, the latter three species ... | 2007 | 17627445 |