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  • Title: The use of polyvinyl alcohol glutaraldehyde as solid-phase in ELISA for plague.
    Author: Araujo AM, Petribú AT, Sales Barbosa GH, Diniz JR, de Almeida AM, Mendes Azevedo W, Malagueño E, Carvalho Júnior LB.
    Journal: Mem Inst Oswaldo Cruz; 1996; 91(2):195-8. PubMed ID: 8736090.
    Abstract:
    Discs of polyvinyl alcohol cross-linked with glutaraldehyde were synthesized under acid catalysis (H2SO4). Then, the antigen F1 purified from Yersinia pestis was covalently linked to this modified polymer. Afterwards, an enzyme-linked immunosorbent assay (ELISA) was established for the diagnosis of plague in rabbit and human. The best conditions for the method were achieved by using 1.3 micrograms of F1 prepared in 0.067 M phosphate buffer, pH 7.2, containing 1 M NaCl (PBS); anti-IgG peroxidase conjugate diluted 6,000 times and as a blocking agent 3% w/v skim milk in PBS. The titration of positive rabbit serum according to this procedure detected antibody concentrations up to 1:12,800 times. The present method, the conventional ELISA and passive haemagglutination assay are compared.
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