Objective The effects of Jianpi Yifei Granules(JYG) on the activity and expression of histone deacetylases(HDACs)as well as the levels of inflammatory cytokines including interleukin(IL)-6,IL-8 in the sputum of chronic obstructive pulmonary disease(COPD)patients with lung-spleen Qi deficiency syndrome.Methods According to results of traditional Chinese medicine(TCM)syndrome differentiation,37 cases of COPD patients at stable stage were divided into 3 groups,namely lung Qi deficiency syndrome group(14 cases)...