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This study describes, for the first time, the development and validation of a highly selective and sensitive heterogeneous fluoroimmunoassay (FIA) for the bioanalysis of two monoclonal antibodies (mAbs) used for cancer immunotherapy: bevacizumab (BEV) and cetuximab (CET). The assay combines reliable non-competitive binding of BEV and CET to their specific cell receptor proteins (human vascular endothelial...
Kinetic exclusion analysis (KinExA)-based immunosensors and enzyme-linked immunosorbent assays (ELISA) have been developed and validated for measurement of five different cancer markers in biological specimens. These markers were: 2′-deoxycytidine (dCyd), 8-hydroxy-2′-deoxyguanosine (8HdG), carbohydrate antigen (CA15-3), α-fetoprotein (AFP), and β-subunit of human chorionic gonadotropin (β-HCG). The...
A novel automated immunosensor assay has been developed for real-time measurement of the breast cancer biomarker CA15-3 in serum. The assay employed the kinetic-exclusion analytical technology of the KinExA™ 3200 instrument. Polymethylmethacrylate (PMMA) beads coated with CA15-3 were used as capturing reagent, mouse anti-CA15-3 monoclonal antibody was used as primary antibody, and the fluorescence...
For the first time, an enzyme-linked immunosorbent assay (ELISA) has been developed and validated for the determination of fluvastatin (FLV) in plasma samples at picogram level. The assay employed a polyclonal antibody that specifically recognizes FLV with high affinity, and FLV conjugate of bovine serum albumin (FLV–BSA) immobilized onto microplate wells as a solid-phase. The assay involved a competitive...
New highly sensitive enzyme immunoassay (EIA) has been developed and validated for the determination of pravastatin (PRV) in human plasma samples. PRV was coupled to keyhole limpt hemocyanin (KLH) and bovine serum albumin (BSA) via its terminal carboxylic acid group by carbodiimide reagent. PRV–KLH conjugate was used as an immunogen for raising anti-PRV polyclonal antibody in rabbits. The generated...
Novel selective and simple kinetic spectrophotometric method has been developed and validated for the determination of norfloxacin (NOR) in its pharmaceutical formulations. The method was based on the reaction of N-vinylpiprazine formed from the interaction of the mono-substituted piprazinyl group in NOR and acetaldehyde with 2,3,5,6-tetrachloro-1,4-benzoquinone to give colored N-vinylpiprazino-substituted...
Generic simple and sensitive universal enzyme immunoassay approach for the determination of small analytes has been developed to avert the problems associated with small molecule immobilization onto solid phases. The developed assay employed a heterogeneous non-competitive binding format. The assay used anti-analyte antibody coupled to polyacrylamide beads as a solid-phase and β-d-galactosidase enzyme-labeled...
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