Peer-reviewed veterinary case report
Development of an optical immunosensor based on the fluorescence of Cyanine-5 for veterinarian diagnostics.
- Journal:
- Biotechnology letters
- Year:
- 2004
- Authors:
- Silva, Marta et al.
- Affiliation:
- Biosensors Laboratory
Abstract
A model optical immunosensor was developed to quantify an antibody present in a sample by measuring the fluorescence of Cyanine-5 conjugated with the antibody, using a competitive and a sandwich immunoreaction configuration, with the antigen immobilised in controlled pore glass beads. At pH 2, 94% of the antigen-antibody complex was dissociated, allowing reutilisation. Photobleaching had no effect on the fluorescence. This model system was used to detect Brucella sp. infection and could quantify anti-Brucella sp. antibodies in ovine serum samples in the range from 0.005 to 0.11 mg ml(-1).
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/15269526/