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자료유형
학술저널
저자정보
저널정보
대한천식알레르기학회(구 대한알레르기학회) 천식 및 알레르기 천식 및 알레르기 제25권 제1호
발행연도
2005.1
수록면
16 - 22 (7page)

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Background: Atopic dermatitis (AD) is an IgE mediated hypersensitivity reaction, generally considered to be caused by interaction of genetic and environmental factors. Human mannose-binding lectin (MBL) belongs to a group of carbohydrate-binding plasma proteins, the so-called collectins. Deficiency of MBL seems to be related to AD with or without recurring skin infections, and arises from three structural gene mutations in exon 1(the B, C and D alleles; the normal allele is A) and/or the presence of a low efficiency promoter. Point mutation at codon 54 of the MBL gene, located on the long arm of chromosome 10, provisionally called B allele, has been implicated as candidate susceptibility gene in AD. Objective: The aim of this study was to evaluate the relationship of this polymorphism with plasma MBL concentration, total and specific IgE in Korean AD patients. Method: We measured total IgE by Latex Photometry Immuno Assay, specific IgE for Dermatophagoides(D) pteronyssinus and D. farinae were measured by Radioallergosorbent test and plasma levels of MBL by enzyme- linked immunoabsorbent assay. We performed a polymerase chain reaction-restriction fragment length polymorphism method of the codon 54 and promoter-550 region and sequence specific primers for a polymerase chain reaction of promoter-221 region of MBL gene on genomic DNA from 243 Korean patients with AD and 99 non-AD controls. Result: AD patients had significantly higher frequency of the HYA and LYB haplotype [P<0.0001, odds ratio (or)= 1.5; odds ratio (or)=2.6] than the controls. The Polymorphism was not associated with the concentration of total and specific high in AD patients (P=0.03). Conclusion: Our results suggest that the codon 54 and promoter -550 and -221 regions of MBL gene polymorphism might be one of the genetic risk factors for AD in Korean.

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