期刊
CLINICAL BIOCHEMISTRY
卷 33, 期 8, 页码 627-633出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0009-9120(00)00183-1
关键词
monoclonal antibodies; enzyme-linked immunosorbent assay; ELISA; insulin analogue assay; specific insulin aspart assay
Objectives: To validate a specific enzyme-linked immunosorbent assay for the rapid-acting human insulin analogue, insulin aspart, in human serum, human plasma, and porcine plasma. Design and methods: For the enzyme-linked immunosorbent assay, two murine monoclonal antibodies were developed that bind to two different epitopes on the insulin aspart molecule. Key parameters for validation were imprecision, accuracy, matrix effects, dilution-linearity, and cross-reactivity. Results: No cross-reactivity was found with human and porcine insulin, human proinsulin, or human C-peptide. The assay is sensitive (limit of quantification = 11.5 pmol/L), accurate (95-107% recovery with human serum, human plasma, and porcine plasma in the range 16-800 pmol/L), and has a 14.7% total imprecision within the entire analytical range. Dilution of samples gave linear results with human serum as the diluent. Conclusions: The insulin aspart-specific enzyme-linked immunosorbent assay described in this study is well suited to study the bioavailability, bioequivalence, and pharmacokinetics of this insulin analogue. Copyright (C) 2001 The Canadian Society of Clinical Chemists.
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