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Related Experiment Videos

Solid-phase cobalamin assay using cobalamin-binding protein from dog stomach.

E Hippe, H Olesen

    Scandinavian Journal of Clinical and Laboratory Investigation
    |October 1, 1975
    PubMed
    Summary

    A novel cobalamin-binding protein from dog stomach was isolated and immobilized for a new solid-phase assay. This method accurately measures serum cobalamins (vitamin B12) with high precision and sensitivity.

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    Area of Science:

    • Biochemistry
    • Veterinary Medicine
    • Analytical Chemistry

    Background:

    • Cobalamin (vitamin B12) is essential for numerous physiological processes.
    • Accurate measurement of serum cobalamin is crucial for diagnosing deficiencies and related disorders.
    • Existing methods may have limitations in precision, sensitivity, or accessibility.

    Purpose of the Study:

    • To identify and characterize a cobalamin-binding protein from canine stomach.
    • To develop a novel solid-phase assay for serum cobalamin quantification using this protein.
    • To evaluate the performance characteristics of the developed assay.

    Main Methods:

    • Isolation and purification of a homogeneous cobalamin-binding protein from dog stomach.
    • Immobilization of the purified protein onto bromoacetyl-cellulose for solid-phase assay development.

    Related Experiment Videos

  • Quantification of serum cobalamins using a radioactive ligand-binding assay and Scatchard analysis.

    • Main Results:

    • A suitable cobalamin-binding protein was identified in dog stomach.
    • The immobilized protein enabled a solid-phase assay for serum cobalamins.
    • The assay demonstrated good precision (0.05-0.10), sensitivity (~30 pmol/L), and accuracy.
    • The reference interval (160-480 pmol/L) aligned with established methods.

    Conclusions:

    • A canine stomach-derived cobalamin-binding protein can be effectively used for solid-phase assay development.
    • This novel assay provides a precise and sensitive method for serum cobalamin determination.
    • The assay offers a reliable alternative for clinical and research applications requiring cobalamin measurement.