ADRB2 gene polymorphisms and salbutamol responsiveness in Serbian children with asthma
Nevena Jovicic1, Tamara Babic2, Sandra Dragicevic2, Branimir Nestorovic1,3, Aleksandra Nikolic2
*Corresponding Author: Nevena Jovicic University Children's Hospital Tirsova 10, 11000 Belgrade, Serbia Tel: 00381641156721 Fax: 00381112685378 E-mail: jovicic.nevena@gmail.com
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Abstract

Background: Inhaled beta-2 adrenergic receptor (β2-AR) agonists are mainstay of asthma therapy. The β2-AR protein is encoded by the ADRB2 gene and variants within this gene can have significant consequences for modulating the response to asthma therapy. Methods: This cross-sectional study performed at the University Children's Hospital in Belgrade, included 54 children with asthma. The subjects were genotyped for ADRB2 +46A>G (Arg16Gly, rs1042713) and +79C>G (Gln27Glu, rs1042714) polymorphisms and the association with asthma severity and response to inhaled salbutamol was examined. Results: In Serbian asthmatic children, allele +46A was detected with a frequency of 41.7% and allele +79G was detected with a frequency of 23.1%. Allele +46G was found to be associated with a better response to inhaled salbutamol (p<0.05) and with mild form of asthma (p<0.05). Conclusions: Polymorphism ADRB2 +46A>G may be a determinant of asthma severity and response to salbutamol in children with asthma. We did not find association of +79C>G polymorphisms with the asthma severity and bronchodilator response to inhaled salbutamol. The results of this study can be potentially useful for personalization of asthma treatment.



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