International Archives of Allergy and Immunology
Original Paper
Isotypic Analysis of Grass Pollen-Specific Immunoglobulins in Human Plasma1. Specialization of Certain Classes and Subclasses in the Immune Response aUnité d’lmmuno-Allergie, Institut Pasteur, Paris, bDivision Recherche et Développement des Protéines Plasmatiques, Centre National de Transfusion Sanguine, Les Ulis, cInstitut National de Transfusion Sanguine, Paris, France; dDivision of Clinical Immunology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Md., USA
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Article / Publication Details
Published online: September 02, 2009
Issue release date: 1993
Number of Print Pages: 11
Number of Figures: 0
Number of Tables: 0
ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)
For additional information: https://www.karger.com/IAA
Abstract
The specificity and isotypic profile of humoral immune responses to Dactylis glomerata (Cocksfoot) pollen was studied by isoelectric focusing (IEF)-immunoprint analysis using 26 human plasma samples with high levels of Dactylis pollen-specific IgG4 (IgG4+ plasma) and 25 human plasma samples with low levels of specific IgG4 (normal plasma). Over 60 individual protein components in an aqueous pollen extract were separated by IEF and immunoprinted onto nitrocellulose (NC). Following plasma incubation, bound IgE, IgG1–4, IgA1, IgA2 and IgM antibodies were detected on separate immunoprints with isotype-specific antibodies. Binding patterns of IgG4 and the majority of IgG1 and IgA2 antibodies in the IgG4+ plasma group very closely paralleled the binding patterns produced by the IgE antibodies from the same plasma and are described as the ‘allergen repertoire’. In contrast, IgE, IgG4, IgG1 and IgA2 antibody reactivities to the ‘allergen repertoire’ were insignificant in the normal plasma group. These results suggest a qualitative, as well as a quantitative relationship between the immune responses which involve these 4 isotypes. Characteristic IgG2 and IgM antibody binding patterns, predominantly to non-allergenic antigens, were shared by the plasma from both groups, while IgG3 and IgA1 antibody binding patterns were highly variable from one plasma to another in both groups. One possible origin of the allergic diseases at the immunoglobulin heavy chain gene level is discussed.
© 1993 S. Karger AG, Basel
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Article / Publication Details
Published online: September 02, 2009
Issue release date: 1993
Number of Print Pages: 11
Number of Figures: 0
Number of Tables: 0
ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)
For additional information: https://www.karger.com/IAA
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Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher.Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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