Measurement of IgE on human basophils: relation to serum IgE and anti IgE induced histamine release

M. C. Conroy, N. F. Adkinson, L. M. Lichtenstein

Research output: Contribution to journalArticlepeer-review

Abstract

The number of IgE molecules bound to human basophils was calculated from direct measurements of the IgE dissociated after exposing leukocytes to pH 3.7 acetate buffer in the cold. In 18 donors studied, cell-bound IgE ranged from 4000 to 500,000 molecules/basophil and correlated with the serum IgE concentration (r = 0.89, p < 0.001) which ranged from 5 to 3,000 ng/ml. Sensitivity of these cells to anti-IgE was tested to explore the relationship between cell-bound IgE and the concentration of anti-IgE required for histamine release. Cells from some nonatopic donors (400 to 100,000 IgE molecules/basophil) were as sensitive as cells from allergic donors (100,000 to 500,000 IgE molecules/basophil). Moreover, cells from donors having approximately the same cell-bound IgE concentration varied widely in their sensitivity to anti-IgE. We conclude that an intrinsic property of human basophils ('releasability') is an important parameter in determining mediator release.

Original languageEnglish (US)
Pages (from-to)1317-1321
Number of pages5
JournalJournal of Immunology
Volume118
Issue number4
StatePublished - Jan 1 1977

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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