Abstract:
BACKGROUND:Sensitivity to the mite Blomia tropicalis is related to asthma in tropical climates, but correlates of sensitivity to B. tropicalis and its relationship to Dermatophagoides pteronyssinus sensitivity have not been widely examined in families with asthma. The main objective of this study was to determine prevalence and correlates of sensitivity to these mites in families with asthma and characteristics of persons sensitized to both. METHODS:Antibodies to major antigens (Blo t 5 and Der p 1) of these mites were measured by immunochemiluminescent assay in 481 members of 29 families from Barbados ascertained through two asthmatic siblings. RESULTS:Blo t 5 sensitivity was present in 261 subjects (46%) and was associated with younger age, higher total serum IgE level, and more than a three-fold increased prevalence of asthma (42 vs. 13%). Der p 1 sensitivity was less common (27%) and showed similar associations with age, IgE, and asthma. Of the 261 subjects sensitized to Blo t 5, 116 were also sensitized to Der p 1; they were younger, had higher total and Blo t 5 specific IgE levels, and had more than twice the asthma prevalence as those sensitized to Blo t 5 alone (59 vs. 29%). Der p 1 sensitivity without Blo t 5 sensitivity was uncommon; 90% of those sensitized to Der p 1 were also sensitized to Blo t 5. Geometric mean total IgE levels were lowest in the 207 participants without any mite sensitization (102 U/ml), intermediate in 158 sensitized to either Blo t 5 OR Der p 1 (609 U/ml), and highest in 116 sensitized to both (1,869 U/ml). CONCLUSIONS:Blo t 5 is the predominant sensitizing mite allergen in these Barbadian families with correlates similar to Der p 1. Concomitant sensitization to Der p 1 appears to identify a more reactive subgroup of individuals at a higher risk of asthma.
journal_name
Int Arch Allergy Immunoljournal_title
International archives of allergy and immunologyauthors
Manolio TA,Barnes KC,Naidu RP,Levett PN,Beaty TH,Wilson AFdoi
10.1159/000070927keywords:
subject
Has Abstractpub_date
2003-06-01 00:00:00pages
119-26issue
2eissn
1018-2438issn
1423-0097pii
70927journal_volume
131pub_type
杂志文章abstract:BACKGROUND:The presence of autoantibodies reacting with the high affinity IgE receptor (FcepsilonRIalpha) usually indicates a more severe form of chronic urticaria (CU). Previously, we showed an increased lymphocyte reactivity in CU patients; however, the relation between enhanced cellular immunity and the presence of ...
journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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doi:10.1159/000324956
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000314362
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000049518
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章,多中心研究
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更新日期:2012-01-01 00:00:00
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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