T This study aimed to evaluate the occurrence of canine leptospirosis and the possible risk factors associated with the disease in the municipality of Patrocínio, MG, Brazil. A cross-sectional observational study was carried out from July through August 2017. The municipality was divided into four regions (north, south, east and west) and a predefined number of neighborhoods (25) were randomly sampled in each region. Samples of blood serum were collected from 241 domiciled male and female dogs of different breeds and ages. To investigate the risk factors for canine leptospirosis, the owners of the animals were asked to fill out an epidemiological questionnaire. The following factors were evaluated: breed, sex, age, presence of rodents, type of diet, access to the street, vaccination, presence of flooded areas, and educational level of the owners. Blood serum samples were evaluated by the Microscopic Agglutination Test (MAT), using a collection of 24 live antigens. Of the 241 dogs evaluated, 32 (13.2%) were reactive. The most frequent serovars were: Copenhageni (37.5%) and Canicola (21.8%), followed by Icterohaemorrhagiae and Grippotyphosa (12.5%), Pomona, Tarassovi and Butembo (9.3%) and Hardjo (6.2%). The presence of canine leptospirosis was associated with purebred dogs (OR=0.3059 [95% CI: 0.1430 – 0.6547]) and vaccination (OR=2.581 [95% CI: 1.198 – 5.563]). It was concluded that some dogs in the municipality of Patrocínio, MG have anti-Leptospira spp. antibodies and that the serovars most frequently identified were Copenhageni (37.5%) and Canicola (21.8%). Pure breeds and vaccination were factors associated with the prevalence of infection.
A incidência de lesões oncológicas tem aumentado nos últimos anos, sendo o linfoma a neoplasia mais comum em gatos na rotina clínica, acomete cerca de 50% de todos os tumores hemolinfáticos nos gatos. Este aumento ocorre de forma multifatorial, sendo um dos principais a maior longevidade dos animais de companhia. Não se conhece a etiologia precisa do linfoma felino em muitos casos, entretanto, causas virais de linfoma felino são bem definidas, havendo infecções tanto pelo vírus da leucemia felina quanto pelo vírus da imunodeficiência felina. O linfoma consiste em uma neoplasia maligna de origem linfocitária, caracterizado pela proliferação clonal de linfócitos malignos, originando-se principalmente de órgãos linfoides, como a medula óssea, baço e linfonodos. Os linfócitos fazem parte do nosso sistema imune e distribuem-se por todo o corpo. O linfoma pode ser classificado como multicêntrico que possuem origem nos gânglios linfáticos, tímico, hepático, esplénico, gastrointestinal e os linfomas extra nodais linfoma cutâneo, nasal, renal e em sistema nervoso. Os sintomas mais comuns são a perda de peso e apetite e os sinais gastrointestinais: vómitos e diarreia.
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