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Related Experiment Videos

Sensitive enzyme immunoassay for human aldolase A.

K Okajima1, N Kurobe, K Shimizu

  • 1Department of Biochemistry, Institute for Developmental Research, Aichi, Japan.

Clinica Chimica Acta; International Journal of Clinical Chemistry
|March 15, 1990
PubMed
Summary

A new enzyme immunoassay accurately detects aldolase A isozyme, crucial for understanding its role in tissues and serum. This sensitive assay provides insights into aldolase A distribution in healthy adults.

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Area of Science:

  • Biochemistry
  • Immunology
  • Enzyme Assays

Background:

  • Aldolase isozymes play critical roles in metabolic pathways.
  • Specific detection of aldolase A (A4) is important for clinical and research applications.
  • Existing methods may lack sensitivity or specificity for aldolase A.

Purpose of the Study:

  • To develop a sensitive and specific sandwich-type enzyme immunoassay for aldolase A4.
  • To characterize the specificity and sensitivity of the developed immunoassay.
  • To determine normal serum levels and tissue distribution of aldolase A in humans.

Main Methods:

  • Development of a sandwich enzyme immunoassay using specific anti-aldolase A antibodies.
  • Antibody purification via immunoaffinity chromatography.

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  • Detection using beta-D-galactosidase labeled antibody fragments.

    • Main Results:

    • The assay detected as little as 10 pg/tube of aldolase A4 with high sensitivity.
    • The assay demonstrated specificity for aldolase A, with minimal cross-reactivity to other isozymes.
    • Intra- and inter-assay coefficients of variation were below 16%.
    • Normal serum aldolase A levels in healthy adults were approximately 200 ng/ml.
    • High concentrations of aldolase A were found in skeletal muscle, heart, cerebrum, and lymphatic tissue.

    Conclusions:

    • A highly sensitive and specific enzyme immunoassay for aldolase A4 has been successfully developed.
    • The assay is suitable for quantifying aldolase A in biological samples.
    • The study provides baseline data on aldolase A levels and distribution in healthy individuals.