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Simple method for development of sensitive and specific antiinsulin antisera for laboratory use
Journal of Immunoassay
|January 1, 1984
Summary
We developed a simple, fast, and inexpensive method to produce high-titer anti-insulin antisera for radioimmunoassay (RIA). This new method yields effective anti-insulin antibodies suitable for RIA applications.
Area of Science:
- Immunology
- Endocrinology
- Biochemistry
Background:
- Commercial anti-insulin antisera are effective but costly.
- Developing an economical and efficient method for producing anti-insulin antisera is crucial for research and diagnostics.
Purpose of the Study:
- To describe a simple, fast, and inexpensive method for producing anti-insulin antisera.
- To evaluate the efficacy of the produced antisera for radioimmunoassay (RIA).
Main Methods:
- Purified pork insulin was used as an antigen, administered subcutaneously with an oil/water/complete Freund adjuvant mixture to guinea pigs.
- Animals received initial injections and booster doses at 40 and 60 days.
- Antibody titers and sensitivity were assessed using radioimmunoassay.
Main Results:
- Four out of six animals produced anti-insulin antisera with titers exceeding 1:10,000 after the primary inoculation.
- Antibody titers significantly improved after the second and third injections (p < 0.0005).
- High sensitivity (detecting ~12 pg insulin) was achieved with titers >1:50,000, suitable for RIA.
Conclusions:
- The described method offers a cost-effective and efficient approach to generate high-quality anti-insulin antisera.
- The produced antisera demonstrate high specificity, binding insulin and proinsulin equimolarly while not binding glucagon.
- This method provides a valuable alternative for obtaining anti-insulin antisera for RIA applications.