A new concept of triggering mechanisms of IgE-mediated histamine release

Teruko Ishizaka, Kimishige Ishizaka, Daniel H. Conrad, Arnold Froese

Research output: Contribution to journalArticle

Abstract

It is generally accepted that an initial step of reaginic hypersensitivity reactions is a bridging of mast cell-bound IgE antibody molecules by antigen. Since IgE molecules are firmly bound to receptors on mast cells, bridging of cell-bound IgE molecules probably brings receptor molecules into close proximity. A hypothesis was therefore presented that such a local change in membrane structure and/or possible interaction between adjacent receptor molecules may be triggering mechanisms of IgE-mediated histamine release. The hypothesis was tested by use of antibodies against "exposed portion" of receptor molecules on rat basophilic leukemia cells. It was found that antireceptor antibodies and its F (ab′)2 fragments induced noncytotoxic histamine release from normal rat mast cells without participation of IgE, while the monovalent Fab′ fragments of the antibody failed to do so. However, sensitization of normal rat skin with the Fab' fragments followed by an intravenous injection of antirabbit IgG induced skin reactions. These findings support the concept that bridging of receptors rather than polymerization of IgE molecules is responsible for the activation of membrane-associated enzymes which in turn leads to histamine release.

Original languageEnglish (US)
Pages (from-to)320-330
Number of pages11
JournalThe Journal of Allergy and Clinical Immunology
Volume61
Issue number5
DOIs
StatePublished - 1978

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Histamine Release
Immunoglobulin E
Mast Cells
Immunoglobulin Fab Fragments
Antibodies
Skin
Membranes
Intravenous Injections
Polymerization
Hypersensitivity
Leukemia
Immunoglobulin G
Antigens
Enzymes

ASJC Scopus subject areas

  • Immunology
  • Immunology and Allergy

Cite this

A new concept of triggering mechanisms of IgE-mediated histamine release. / Ishizaka, Teruko; Ishizaka, Kimishige; Conrad, Daniel H.; Froese, Arnold.

In: The Journal of Allergy and Clinical Immunology, Vol. 61, No. 5, 1978, p. 320-330.

Research output: Contribution to journalArticle

Ishizaka, Teruko ; Ishizaka, Kimishige ; Conrad, Daniel H. ; Froese, Arnold. / A new concept of triggering mechanisms of IgE-mediated histamine release. In: The Journal of Allergy and Clinical Immunology. 1978 ; Vol. 61, No. 5. pp. 320-330.
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