[The correlation of vitamin D level and vitamin D-binding protein gene polymorphism in chronic obstructive pulmonary disease].
2014
Abstract To assess the correlation of serum 25-hydroxyvitamin D (25-OHD) levels with vitamin D-binding protein (the group-specific component, GC) gene polymorphism in chronic obstructive pulmonary disease (COPD). In a cross-sectional case-control study, 250 participants, including 116 COPD patients with smoking history and 134 healthy smokers, were investigated. A questionnaire about smoking history, vitamin D intake and comorbidities was collected. General pulmonary function was done by routine. Serum 25-OHD levels were detected by ELISA. The genetic variants (rs4588 and rs7041) were genotyped by real time fluorescence polymerase chain reaction (RT-PCR) with TaqMan probe technology. The COPD patients had lower serum vitamin D level than the smoker subjects (36.58 nmol/L vs 43.80 nmol/L, P
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