Rapid serological test for paratuberculosis using fluorescence polarization technology
US7018616B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Oct 31, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2469/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an assay for detection of serum antibodies to M. paratuberculosis. A tracer, comprising a carbohydrate antigen isolated from M. paratuberculosis that is conjugated to a fluorophore, is added to a serum sample from an animal to form a mixture. The fluorescence polarization of the mixture is then measured. The presence of serum antibodies to M. paratuberculosis is indicated by a fluorescence polarization value of the mixture that is higher than the fluorescence polarization value of a control. The present invention further provides a tracer for use in a fluorescence polarization assay for antibodies specific for M. paratuberculosis. The tracer comprises a carbohydrate antigen isolated from M. paratuberculosis and conjugated to a fluorophore, such that the tracer is able to bind to antibodies specific for M. paratuberculosis to produce a detectable change in fluorescence polarization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.