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Clinical and Experimental Allergy 2008-Jan

Sensitization to cross-reactive carbohydrate determinants in relation to alcohol consumption.

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A Gonzalez-Quintela
M Garrido
F Gude
J Campos
A Linneberg
S Lojo
C Vidal

キーワード

概要

BACKGROUND

Alcohol consumption is associated with increased serum IgE of unknown specificity.

OBJECTIVE

To investigate the prevalence of specific IgE to cross-reactive carbohydrate determinants (CCDs) in adults, and its relation to alcohol consumption.

METHODS

Population-based survey of 457 adults (218 abstainers, 195 light-to-moderate drinkers, 44 heavy drinkers). Specific IgE determinations included a CCD (MUXF(3), the N-glycan of bromelain), pollens (Lolium perenne and Olea europaea), Hymenoptera venoms (Apis mellifera and Vespula spp.), and a mite (Dermatophagoides pteronyssinus). We replicated these studies in an additional sample of alcoholics (n=138). Inhibition assays were performed in selected cases.

RESULTS

In the general population, 5.6% of individuals (95% confidence interval 3.5-7.6%) showed positive (>/=0.35 kU/L) CCD-specific IgE. The levels of CCD-specific IgE were particularly high in heavy drinkers, who also showed a high prevalence of positive IgE to pollens and Hymenoptera venoms, doubling (at least) the prevalence found in alcohol abstainers and light-to-moderate drinkers. The presence of IgE to pollens and Hymenoptera venoms was closely correlated with the presence of CCD-specific IgE. These features were confirmed in the additional sample of alcoholics. Inhibition studies indicated a role of CCD interference in IgE positivity to pollen and Hymenoptera allergens in alcoholics.

CONCLUSIONS

CCD-specific IgE is prevalent in heavy drinkers, and is associated with positive IgE to pollens and Hymenoptera venoms. Specific IgE results should be interpreted with caution in heavy drinkers.

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