Development and assessment of a latex agglutination test based on recombinant MSP5 to detect antibodies against Anaplasma marginale in cattle

• Autor(a) principal: RAMOS, Carlos Alberto do Nascimento
• Data de Publicação: 2014
• Outros Autores: ARAÚJO, Flábio Ribeiro de, SANTOS, Rafaelle Cunha dos, MELO, Elaine Silva de Pádua, SOUSA, Letícia Carvalho de, VIDAL, Carlos Eugênio Soto, GUERRA, Neurisvan Ramos Guerra, RAMOS, Rafael Antonio do Nascimento
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFPA
• Texto Completo: http://repositorio.ufpa.br/jspui/handle/2011/6589
• topic: Bovino; Anaplasma marginale; Testes de fixação do latex; MSP5

The recombinant protein MSP5 has been established as an important antigen for serological diagnosis of Anaplasma marginale by enzyme-linked immunosorbent assay (ELISA). However, due to the high cost of specialized equipment, this technique is not accessible to all laboratories, especially in developing countries in areas where the disease is endemic. The present study describes the standardization of a latex agglutination test (LAT) to detect antibodies against A. marginale based on recombinant MSP5. Compared with indirect enzyme-linked immunosorbent assay (iELISA), the relative sensitivity and specificity of the LAT were 95.21% and 91.86% respectively, with an almost perfect agreement between tests (kappa index = 0.863). These results can be considered important for the serological diagnosis of A. marginale, as they indicate that the test represents a rapid and low cost alternative to ELISA.