Use of Recombinant BP26 Protein in Serological Diagnosis of Brucella melitensis Infection in Sheep

Use of recombinant BP26 protein in serological diagnosis of Brucella melitensis infection in sheep.

Previously a Brucella protein named CP28, BP26, or Omp28 has been identified as an immunodominant antigen in infected cattle, sheep, goats, and humans. In the present study we evaluated antibody responses of infected and B. melitensis Rev.1-vaccinated sheep to the BP26 protein using purified recombinant BP26 protein produced in Escherichia coli in an indirect enzyme-linked immunosorbent assay (...

Epitope mapping of the Brucella melitensis BP26 immunogenic protein: usefulness for diagnosis of sheep brucellosis.

Sequencing of bp26, the gene encoding the Brucella sp. immunogenic BP26 periplasmic protein, was performed in the reference strains of Brucella abortus, B. suis, and B. ovis. The three bp26 sequences were almost identical to that published for B. melitensis 16M bp26, and only minor nucleotide substitutions, without modifying the amino acid sequence, were observed between species. The bp26 genes...

Accuracy of Indirect ELISA Prepared from Recombinant Bp26 Gene of Brucella melitensis in Diagnosis of Human Brucellosis

Background: Considering the prevalence of brucellosis in Iran, it is necessary to choose a specific and sensitive laboratory method to diagnose it in a rapid and timely manner. The aim of this study was to assess the accuracy of indirect enzyme-linked immunosorbent assay (ELISA) for detecting brucellosis in humans in order to have an appropriate alternative to conventional tests such as Wright,...

Characterization of Periplasmic Protein BP26 Epitopes of Brucella melitensis Reacting with Murine Monoclonal and Sheep Antibodies

More than 35,000 new cases of human brucellosis were reported in 2010 by the Chinese Center for Disease Control and Prevention. An attenuated B. melitensis vaccine M5-90 is currently used for vaccination of sheep and goats in China. In the study, a periplasmic protein BP26 from M5-90 was characterized for its epitope reactivity with mouse monoclonal and sheep antibodies. A total of 29 monoclona...

Brucella melitensis Infection in Sheep-dogs in Iran