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[ELISA detection of protamine antibodies]
Immunitat Und Infektion
|April 1, 1985
Summary
Protamine, used in insulin, can trigger an immune response. A new ELISA test detects protamine antibodies in animals and 4% of patients using protamine insulins.
Area of Science:
- Immunology and Biochemistry
- Assay Development
Context:
- Protamine is a common adjuvant in insulin formulations.
- As an exogenous protein, protamine can elicit an immunogenic response.
Purpose:
- To develop and validate an Enzyme-Linked Immunosorbent Assay (ELISA) for detecting protamine antibodies.
- To investigate the immunogenicity of protamine in various animal models and human patients.
Summary:
- An ELISA was developed to detect antibodies against protamine, a basic protein used in insulin.
- Methodological challenges due to protamine's reactivity were addressed.
- Antibody titers were observed in immunized rabbits, goats, sheep, and guinea pigs; 4% of 150 human patients on protamine insulin also showed detectable antibodies.
Impact:
- Provides a method for quantifying protamine-specific immune responses.
- Highlights the potential immunogenicity of protamine in therapeutic settings.
- Informs clinical monitoring and development of insulin formulations.