Produção e avaliação da proteína derivada (PPD) de Burkholderia mallei para o diagnóstico imuno-alérgico do mormo em equídeos

• Autor(a) principal: SILVA, Karla Patrícia Chaves da
• Data de Publicação: 2010
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRPE
• dARK ID: ark:/57462/0013000006r8r
• Texto Completo: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5700
• topic: Equídeo; Doença bacteriana; Diagnóstico; Mormo; Maleina; Equine; Bacterial disease; Diagnosis; CIENCIAS AGRARIAS::MEDICINA VETERINARIA

The objective this study produce and evaluate PPD-mallein with potential for application in the diagnosis of glanders from of the the production and purification of immunogenic proteins of B. mallei isolates from equines with glanders in Brazil. Were isolated and characterized phenotypically and by detecting the activity of proteases, polyphenol oxidases, esterases and determination of the resistance profile in vitro. Samples of B. mallei studied were susceptible to antimicrobial gentamicin, ciprofloxacin, norfloxacin, doxycycline and enrofloxacin and resistant to trimethoprim / sulfamethoxazole, amoxicillin and ampicillin. Was observed the activity of proteases, absence esterases polyphenyloxidase and bacterial growth resulted in toxic metabolites. For the production and purification of the protein partially mallein were used two strains of B. mallei Brazilian already characterized phenotypically and genotypically. Was inoculated broth samples Dorset-Henley to metabolize and get the bacterial proteins. Proteins were separated and precipitated with trichloroacetic acid and ammonium sulphate. The PPD-mallein were concentrated at 1.0 mg / mL and evaluation in guinea pigs previously sensitized with bacter were effective for identifying infection in animals truly positive and exclude the animals truly negative. Histological analysis of the application site of mallein revealed the development of Type IV hypersensitivity. Was evaluated the PPD-mallein about their power in five asinines with clinical signs, with bacteriological diagnosis and positive serology for glanders and five asinines negative in serology and bacteriology. The animals were tested according to the criteria established by paragraph IN nº24 regarding the diagnosis of glanders. After 48 hours of inoculation, there was swelling in the area of injection, presence of ocular discharge and tearing confirming the diagnosis of glanders. The other seronegative animals showed no inflammatory reaction at the site of inoculation of PPD-mallein. This immunogen produced and being tested in Brazil was effective being a new possibility for diagnosis and control of glanders in this country.