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Titolo:
IDENTIFICATION OF COMMON ALLERGENIC STRUCTURES IN MUGWORT AND RAGWEEDPOLLEN
Autore:
HIRSCHWEHR R; HEPPNER C; SPITZAUER S; SPERR WR; VALENT P; BERGER U; HORAK F; JAGER S; KRAFT D; VALENTA R;
Indirizzi:
UNIV VIENNA,AKH,INST GEN & EXPT PATHOL,WAHRINGER GURTEL 18-20 A-1090 VIENNA AUSTRIA UNIV VIENNA,AKH,INST GEN & EXPT PATHOL A-1090 VIENNA AUSTRIA UNIV VIENNA,AKH,INST MED & CHEM LAB DIAGNOST A-1090 VIENNA AUSTRIA UNIV VIENNA,AKH,DEPT INTERNAL MED 1,DIV HEMATOL A-1090 VIENNA AUSTRIA UNIV VIENNA,AKH,DEPT OTORHINOLARYNGOL A-1090 VIENNA AUSTRIA
Titolo Testata:
Journal of allergy and clinical immunology
fascicolo: 2, volume: 101, anno: 1998,
parte:, 1
pagine: 196 - 206
SICI:
0091-6749(1998)101:2<196:IOCASI>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
CROSS-REACTIVE ALLERGEN; ARTEMISIA-VULGARIS L; PLANT-DERIVED FOOD; AMB-A-II; MAJOR ALLERGEN; GLYCOPROTEIN ALLERGEN; HISTAMINE-RELEASE; ESCHERICHIA-COLI; RECOMBINANT AMB; PROFILIN;
Keywords:
WEED ALLERGY; MUGWORT (ARTEMISIA VULGARIS); RAGWEED (AMBROSIA ELATIOR); IGE CROSS-REACTIVITY; PROFILIN; HISTAMINE RELEASE; NASAL PROVOCATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
54
Recensione:
Indirizzi per estratti:
Citazione:
R. Hirschwehr et al., "IDENTIFICATION OF COMMON ALLERGENIC STRUCTURES IN MUGWORT AND RAGWEEDPOLLEN", Journal of allergy and clinical immunology, 101(2), 1998, pp. 196-206

Abstract

Background: Despite the rare occurrence of ragweed in Middle Europe, a surprisingly high number of patients allergic to mugwort, a frequently encountered weed, display IgE reactivity against ragweed pollen allergens. Objective: The aim of this study was to investigate whether the high prevalence of IgE reactivity against ragweed in patients allergic to mugwort is caused by the presence of common allergenic determinants. We also sought to characterize any cross-reactive allergens. Methods: Common allergenic structures in mugwort and ragweed pollen were characterized by qualitative IgE immunoblot inhibition experiments performed with natural allergen extracts and recombinant allergens. The degree of cross-reactivity was estimated by quantitative CAP-FEIA competitions. The clinical significance of cross-reactive IgE antibodies wasstudied with histamine release experiments and nasal provocation tests. Results: Mugwort and ragweed RAST values were significantly correlated in a population of 82 Austrian patients allergic to mugwort. IgE antibodies cross-reacted with allergens of comparable molecular weight that were present in both extracts: By using recombinant birch profilin and specific antisera for IgE inhibition experiments, profilin was identified as one of the cross-reactive components in mugwort and ragweed pollen. Preincubation of sera from patients allergic to mugwort with mugwort extract inhibited IgE binding to ragweed pollen extract greater than 80%. Mugwort and ragweed pollen extract induced comparable histamine release and reduction of nasal air how in a patient with IgE reactivity against the major mugwort allergen Art v 1. Conclusion: In addition to profilin, mugwort and ragweed pollen contain a number of cross-reactive allergens, among them the major mugwort allergen Art v 1. Cross-reactive IgE antibodies can lead to clinically significant allergic reactions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/10/20 alle ore 00:54:53