Major cat and dog allergens share IgE epitopes

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Presentation transcript:

Major cat and dog allergens share IgE epitopes Susanne Spitzauer, MDa, Budhi Pandjaitan, MSca, Sonja Mühla, Christof Ebner, MDb, Dietrich Kraft, MDb, Rudolf Valenta, MDb, Helmut Rumpold, MDa Journal of Allergy and Clinical Immunology Volume 99, Issue 1, Pages 100-106 (January 1997) DOI: 10.1016/S0091-6749(97)70306-3 Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 1 Common IgE-reactive epitopes of the major cat and dog allergens revealed by IgE-immunoblot inhibitions. Cat hair/dander extracts (A) and dog hair/dander extracts (B) were separated by SDS-PAGE. Sera from six patients with IgE reactivity to cat and dog hair/dander allergens were preincubated with transferrin (lane 0), cat hair/dander proteins (lane c), or dog hair/dander proteins (lane d) before incubation with the nitrocellulose-blotted extracts. MW, Molecular weight. Journal of Allergy and Clinical Immunology 1997 99, 100-106DOI: (10.1016/S0091-6749(97)70306-3) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 1 Common IgE-reactive epitopes of the major cat and dog allergens revealed by IgE-immunoblot inhibitions. Cat hair/dander extracts (A) and dog hair/dander extracts (B) were separated by SDS-PAGE. Sera from six patients with IgE reactivity to cat and dog hair/dander allergens were preincubated with transferrin (lane 0), cat hair/dander proteins (lane c), or dog hair/dander proteins (lane d) before incubation with the nitrocellulose-blotted extracts. MW, Molecular weight. Journal of Allergy and Clinical Immunology 1997 99, 100-106DOI: (10.1016/S0091-6749(97)70306-3) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 2 Preincubation of serum of a patient allergic to timothy grass pollen with cat or dog extracts does not affect IgE binding to nitrocellulose-blotted timothy grass pollen extract. The serum was preincubated with transferrin (lane 0), cat (lane C), or dog extract (lane D). Lane N shows the results after incubation with serum from a nonallergic individual. Lane P represents the buffer control. MW, Molecular weight. Journal of Allergy and Clinical Immunology 1997 99, 100-106DOI: (10.1016/S0091-6749(97)70306-3) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 3 Proteins from cat and dog extract were separated on the same gel and transferred to nitrocellulose. Sheets containing cat and dog extracts were then incubated with serum from a patient with dog and cat allergy, which had been preincubated with transferrin, cat extract, or dog extract. Bound IgE was then detected with 125I-labeled anti-human IgE antibodies. MW, Molecular weight. Journal of Allergy and Clinical Immunology 1997 99, 100-106DOI: (10.1016/S0091-6749(97)70306-3) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 4 Two-dimensional immunoblot inhibition. A and B, Sera from two individuals allergic to both cats and dogs were preincubated with transferrin (negative control) or with cat extract. Preadsorbed sera were used to detect two-dimensional separated dog allergens. MW, Molecular weight; pI, isoelectric point. Journal of Allergy and Clinical Immunology 1997 99, 100-106DOI: (10.1016/S0091-6749(97)70306-3) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 4 Two-dimensional immunoblot inhibition. A and B, Sera from two individuals allergic to both cats and dogs were preincubated with transferrin (negative control) or with cat extract. Preadsorbed sera were used to detect two-dimensional separated dog allergens. MW, Molecular weight; pI, isoelectric point. Journal of Allergy and Clinical Immunology 1997 99, 100-106DOI: (10.1016/S0091-6749(97)70306-3) Copyright © 1997 Mosby, Inc. Terms and Conditions