Generic lanthanide fluoroimmunoassay for the simultaneous screening of 18 sulfonamides using an engineered antibody.
Anal Chem
; 76(11): 3091-8, 2004 Jun 01.
Article
en En
| MEDLINE
| ID: mdl-15167787
ABSTRACT
Sulfa antibiotics (sulfonamides) are used in veterinary and human medicine for therapeutic and prophylactic purposes. Veterinary use can result in foodstuffs derived from animals being contaminated with residual sulfonamides. Current sulfonamide-screening methods (mainly based on bacterial growth inhibition) are slow and inaccurate, since sensitivities of bacteria to different sulfonamides vary a lot. Therefore, a rapid immunoassay that was able to detect at least 18 different sulfonamides at the MRL level (100 microg/kg) from food samples in a single reaction was developed. The assay was reproducible and adequately accurate for screening purposes. The presence of sulfonamide metabolites did not cause major assay interference. We also demonstrated reliable detection of sulfonamides from a panel of meat, milk, and serum samples with the assay.
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Bases de datos:
MEDLINE
Asunto principal:
Sulfonamidas
/
Región Variable de Inmunoglobulina
/
Fluoroinmunoensayo
/
Contaminación de Alimentos
/
Elementos de la Serie de los Lantanoides
/
Antibacterianos
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
/
Screening_studies
Idioma:
En
Revista:
Anal Chem
Año:
2004
Tipo del documento:
Article
País de afiliación:
Finlandia