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Related Experiment Videos

Noncellular immunoadsorbents for preparing typing sera that recognize high-frequency red cell antigens.

S W Gee1, A Lubenko

  • 1Department of Immunology, North London Blood Transfusion Centre, Edgware, Middlesex, England.

Transfusion
|November 1, 1988
PubMed
Summary

Salivary ABH substance on affinity gel effectively adsorbs anti-A and anti-B antibodies. This method removes ABO antibodies without affecting reactivity against high-frequency antigens, proving useful in blood group serology.

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Area of Science:

  • Immunology
  • Transfusion Medicine
  • Biochemistry

Background:

  • Blood group typing relies on identifying antibodies against specific antigens.
  • High-frequency antigens can complicate antibody identification due to potential cross-reactivity.
  • Salivary ABH substances offer a potential source for immunoadsorbent development.

Purpose of the Study:

  • To investigate the efficacy of salivary ABH substance immobilized on an affinity gel.
  • To determine if this immunoadsorbent can selectively remove anti-A and anti-B antibodies.
  • To assess the preservation of antibody activity against high-frequency antigens after adsorption.

Main Methods:

  • Covalent coupling of salivary ABH substance to an affinity gel matrix.
  • Batch adsorption of sera containing antibodies to high-frequency antigens (e.g., anti-Hy, -Jra, -U, -Lub, -Tja, -Vel, -Coa).

Related Experiment Videos

  • Titration of adsorbed sera against ABO-incompatible and ABO-compatible cells with and without high-frequency antigens.

    • Main Results:

    • The affinity gel successfully adsorbed anti-A and anti-B antibodies from sera.
    • Adsorption was effective even in the presence of antibodies to high-frequency antigens.
    • The sera retained their activity against cells expressing high-frequency antigens post-adsorption.

    Conclusions:

    • Salivary ABH substance-coupled affinity gel is a feasible immunoadsorbent for selective ABO antibody removal.
    • This technique allows for the adsorption of ABO antibodies without compromising the detection of antibodies to high-frequency antigens.
    • This method has potential applications in complex blood group serology and antibody identification.