title: Generic lanthanide fluoroimmunoassay for the simultaneous screening of 18 sulfonamides using an engineered antibody.
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.
authors.affiliation: Department of Biotechnology, University of Turku, Turku, Finland. teemu.korpimaki@utu.fi
authors.forename: Teemu
authors.initials: T
authors.lastname: Korpimäki
authors.forename: Virve
authors.initials: V
authors.lastname: Hagren
authors.forename: Eeva-Christine
authors.initials: EC
authors.lastname: Brockmann
authors.forename: Mika
authors.initials: M
authors.lastname: Tuomola
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000032:analysis* / Q000097:blood / Q000737:chemistry; D004353:Drug Evaluation, Preclinical; D015200:Fluoroimmunoassay / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D007135:Immunoglobulin Variable Region / Q000235:genetics* / Q000276:immunology; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008460:Meat / Q000032:analysis; D008892:Milk / Q000737:chemistry; D015202:Protein Engineering; D013449:Sulfonamides / Q000032:analysis* / Q000097:blood / Q000737:chemistry
chemical_list: D000900:Anti-Bacterial Agents; D007135:Immunoglobulin Variable Region; D028581:Lanthanoid Series Elements; D013449:Sulfonamides