<P><B>Summary</B></P><P><B>Background</B></P><P>Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease that is characterized by varying degrees of involvement of airway and lung pa...
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https://www.riss.kr/link?id=A107596976
2009
-
SCI,SCIE,SCOPUS
학술저널
98-103(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Summary</B></P><P><B>Background</B></P><P>Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease that is characterized by varying degrees of involvement of airway and lung pa...
<P><B>Summary</B></P><P><B>Background</B></P><P>Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease that is characterized by varying degrees of involvement of airway and lung parenchyma. Although cigarette smoke is the major risk factor for COPD, the principal determining factors of involvement of the airway or lung parenchyma have not been clearly defined. Genetic variability in COPD patients might influence the varying degrees of involvement of airway and parenchyma. We therefore studied whether airway and parenchyma involvement might be associated with the <I>ADRB2</I> genotype, which has been reported to be associated with COPD susceptibility and the bronchodilator response.</P><P><B>Methods</B></P><P>One hundred and eleven COPD subjects, whose post-bronchodilator FEV<SUB>1</SUB>/FVC values were less than 0.7, and who had histories of smoking exceeding 10 pack-years, were prospectively recruited from pulmonology clinics of 11 hospitals in Seoul, Korea. The degrees of involvement of airway and parenchyma were evaluated by volumetric computed tomography (CT) scans. In-house software automatically calculated luminal areas, airway wall areas, percentages of wall areas in segmental bronchi, emphysema indices, and mean lung densities in the whole lung parenchyma. The <I>ADRB2</I> genotypes at codon 16 were determined for all patients.</P><P><B>Results</B></P><P>Gly16 was associated with lumen diameter, luminal area, and percentage of wall area in patients with COPD (<I>p</I>=0.02), whereas neither wall area nor wall thickness differed with <I>ADRB2</I> genotype. Neither emphysema index nor mean lung density was associated with <I>ADRB2</I> genotype.</P><P><B>Conclusion</B></P><P>Gly16 variant in <I>ADRB2</I> gene was associated with airway wall phenotypes measured using CT scanning in COPD patients.</P>