The influence of the route of inoculation on the development of the leptospiral infection in hamsters (Mesocricetus auratus) experimentally infected with Leptospira interrogans serovar pomona

• Autor(a) principal: Macedo, Nicodemos Alves de
• Data de Publicação: 2004
• Outros Autores: Morais, Zenáide Maria de, Camargo, Cláudio Roberto de Almeida, Alves, Clebert José, Azevedo, Sérgio Santos de, Nümberger Júnior, Rodolfo, Vasconcellos, Sílvio Arruda
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Brazilian Journal of Veterinary Research and Animal Science
• Texto Completo: https://www.revistas.usp.br/bjvras/article/view/6277
• topic: Via de inoculação; Hamsters; Sorovar pomona; Rout of inoculation; Hamsters; Serovar pomona

The influence of the route of inoculation on the development of the leptospiral infection was investigated in 60 hamsters (Mesocricetus auratos) experimentally infected with Leptospira interrogans serovar pomona. The routes of inoculation were intraperitoneal, subcutaneous, oral, conjuntival and scrapped skin. All animals received the leptospiral inoculum cultivated in Fletcher's medium, with 20 to 30 leptospires per field under 200x magnification. The controls were inoculated only with Fletcher's medium. Samples of blood sera and the kidney fragments were collected in the agonic stage of the disease or at 21st experimental day, when all survivors were killed. The antibodies detection was done by the microscopic agglutination test and the bacteria detection by the dark field microscopic examination and culture in Fletcher's medium, by the tenfold dilutions technique. The presence and development of disease was affected by the route of infection. The oral route was the less effective for promoting the disease. There was no association between the frequency of carrier state and the route of infection.