Association between TAAR6 polymorphisms and airway responsiveness to inhaled corticosteroids in asthmatic patients
| Autor: | Hun Soo Chang, Jeong-Seok Heo, Seung-Woo Shin, Da-Jeong Bae, Hyun Ji Song, Ji Ae Jun, Jeong Dong Kim, Jong-Sook Park, Byung Lae Park, Hyung Doo Shin, Choon-Sik Park |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male Adolescent Anti-Inflammatory Agents Cell Cycle Proteins Polymorphism Single Nucleotide Receptors G-Protein-Coupled Young Adult Gene Frequency Adrenal Cortex Hormones Forced Expiratory Volume Administration Inhalation Genetics Humans Prospective Studies General Pharmacology Toxicology and Pharmaceutics Molecular Biology 3' Untranslated Regions Genetics (clinical) Genetic Association Studies Aged Nuclear Proteins Middle Aged Asthma Haplotypes Molecular Medicine Fluticasone Female |
| Zdroj: | Pharmacogenetics and genomics. 25(7) |
| ISSN: | 1744-6880 |
| Popis: | Genetic polymorphisms may be responsible for the wide variation in response to inhaled corticosteroids in asthmatic patients. We had previously reported that one polymorphism rs7772821, located on the 3'-UTR of trace amine-associated receptor 6 (TAAR6), is significantly associated with percentile changes in the forced expiratory volume in 1 s (%ΔFEV1) after inhaled corticosteroid treatment in asthmatics using a genome-wide association study. The aim of the present study was to validate the association between 15 single-nucleotide polymorphisms (SNPs) on the TAAR6 and airway responsiveness to inhaled corticosteroids in the asthmatics.The %ΔFEV1 induced by 4 weeks' treatment with inhaled fluticasone propionate (1000 μg daily) was measured in 246 asthmatics. The 15 SNPs of TAAR6 were genotyped using a TaqMan assay. An association analysis between %ΔFEV1 and TAAR6 polymorphisms was carried out using a linear regression model controlling for age, sex, smoking status, presence of atopy, and baseline FEV1 as covariates.Among the 15 SNPs and seven haplotypes of TAAR6, rs7772821 (TG) on the 3'-UTR showed the strongest correlation with inhaled corticosteroid-induced %ΔFEV1 (Pcorr=0.002 in the codominant model, Pcorr=0.03 in the dominant model, Pcorr=0.01 in the recessive model). The %ΔFEV1 of the rs7772821TG minor homozygotes (60.77%) was higher than that of patients harboring either the rs7772821 T/G or T/T genotypes (21.32 and 31.60%, respectively).The TAAR6 rs7772821 polymorphism may be one of the important genetic factors for predicting the response to treatment with inhaled corticosteroids in asthmatics. |
| Databáze: | OpenAIRE |
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