Respirology : official journal of the Asian Pacific Society of Respirology
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Loss of lung function is an important chronic obstructive pulmonary disease phenotype and decreased forced expiratory volume in 1 s (FEV₁) is an independent risk factor of morbidity and mortality. Genome-wide association studies (GWAS) identifying genetic variants underlying lung function have been performed mostly in Caucasian populations. In this study, we aimed to identify genetic variants influencing lung function in a Korean population. ⋯ We identified that PPT2 on chromosome 6p21 is associated with loss of lung function in the Korean population.
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Pulmonary emphysema is linked to T cell-mediated autoimmune inflammation, although the pathogenic role of specific pro-inflammatory cytokines remains unclear. The Th17 type response, characterized by the production of the cytokine interleukin (IL)-17A, is modulated in part by the IL-6/signal transducer and activator of transcription (Stat)3 signalling axis and is associated with numerous autoimmune diseases. We therefore evaluated a causal role for IL-17A in the IL-6-driven gp130(F/F) mouse model for spontaneous pulmonary inflammation and emphysema. ⋯ Collectively, our data suggest that the integration of IL-17A into the IL-6/Stat3 signalling axis mediates lung inflammation, but not emphysema, and that discrete targeting of IL-17A may alleviate pulmonary inflammatory-related diseases.