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Relationship between neurokinin 2 receptor gene polymorphisms and serum vascular endothelial growth factor levels in patients with toluene diisocyanate-induced asthma.

Authors
Ye, YM  | Kang, YM | Kim, SH  | Kim, CW | Kim, HR | Hong, CS | Park, CS | Kim, HM | Nahm, DH  | Park, HS
Citation
Clinical and experimental allergy, 36(9). : 1153-1160, 2006
Journal Title
Clinical and experimental allergy
ISSN
0954-78941365-2222
Abstract
BACKGROUND: Among the various pathogenic mechanisms of toluene diisocyanate (TDI)-induced asthma, a contribution from neurogenic inflammation has been suggested.



OBJECTIVE: To evaluate neurokinin 2 receptor (NK2R) gene polymorphisms in association with the clinical phenotype of TDI-induced asthma, 70 TDI-induced occupational asthma (TDI-OA)patients, 59 asymptomatic exposed controls (AEC), and 93 unexposed healthy controls (NC) were enrolled in the study.



METHODS: Two single-nucleotide polymorphisms (SNPs) of NK2R, 7853G>A (Gly231Glu) and 11 424G>A (Arg375His), were genotyped using a single base extension method. The levels of PC20 methacholine, specific IgE and IgG to TDI-human serum albumin conjugate, and serum vascular endothelial growth factor (VEGF), matrix metalloproteinase-9, and TGF-beta1 were compared according to the NK2R genotypes of the subjects with TDI-OA and AEC.



RESULTS: No significant differences in allele, genotype, or haplotype frequencies of these two SNPs were noted among the three groups (P>0.05, respectively). Moreover, subjects with the NK2R 7853GG genotype had higher serum VEGF levels than those with GA or AA among the TDI-exposed workers (P=0.040).



CONCLUSION: The NK2R 7853GG genotype may contribute to increased serum VEGF levels, which result in airway inflammation after TDI exposure.
MeSH

DOI
10.1111/j.1365-2222.2006.02547.x
PMID
16961715
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Allergy
Journal Papers > Hospital > Clinical Trial Center
Ajou Authors
김, 승현  |  남, 동호  |  박, 해심  |  예, 영민
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