Probable Role of Beta 2-Adrenergic Receptor Gene Haplotype in Toluene Diisocyanate-Induced Asthma
Allergy, Asthma & Immunology Research
;
: 260-266, 2010.
Artigo
em Inglês
| WPRIM
| ID: wpr-72904
ABSTRACT
PURPOSE:
A genetic polymorphism of the beta 2-adrenergic receptor is a major factor associated with the asthmatic phenotype. The association of this polymorphism with toluene diisocyanate (TDI)-induced asthma has not been investigated. We examined 103 TDI-induced asthma patients (TDI-OA), 60 asymptomatic exposed controls (AEC), and 263 unexposed healthy controls (NC) in order to identify beta 2-adrenergic receptor gene (ADRB2) polymorphisms and the possible association with TDI-induced asthma.METHODS:
Single nucleotide polymorphisms (SNPs) of ADRB2 were genotyped by direct sequencing. Serum-specific IgE and IgG levels were measured using an enzyme-linked immunosorbent assay. Phenotypes and clinical patient parameters were compared.RESULTS:
SNPs were identified (-47 T>C, -20 T>C, Arg16Gly A>G, Gln27Glu C>G, Leu134Leu G>A, Arg175Arg C>A) during ADRB2 screening (from -231 to 793 bp). No significant differences in allelic and genotypic frequencies were noted for any of the six ADRB2 SNPs. The Arg16Gly A>G, Leu134Leu G>A, and Arg175Arg C>A SNPs and haplotype 1 [TTACGC] were significantly associated with specific IgE antibodies to the TDI-human serum albumin (HSA) conjugate in TDI-exposed subjects (P<0.05). Exposed workers with the ADRB2 ht1/ht1 homozygote had a significantly higher TDI-HSA conjugate-specific IgE sensitization rate than did those with the null ht1 haplotype (odds ratio, 15.40; 95% confidence interval, 1.81-131.06).CONCLUSIONS:
ADRB2 polymorphisms may affect IgE-specific sensitization to TDI-HSA conjugate in TDI-exposed workers.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fenótipo
/
Polimorfismo Genético
/
Asma
/
Tolueno
/
Haplótipos
/
Imunoglobulina E
/
Imunoglobulina G
/
Albumina Sérica
/
Ensaio de Imunoadsorção Enzimática
/
Programas de Rastreamento
Tipo de estudo:
Estudo de rastreamento
Limite:
Humanos
Idioma:
Inglês
Revista:
Allergy, Asthma & Immunology Research
Ano de publicação:
2010
Tipo de documento:
Artigo
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