Efficacy and safety of Qingfei Huatan formula in the treatment of acute exacerbation of chronic obstructive pulmonary disease: A multi-centre, randomised, double-blind, placebo-controlled trial.

Background: Chronic obstructive pulmonary disease (COPD), a common respiratory disease, can be effectively treated by traditional Chinese medicine (TCM). Qingfei Huatan, a TCM formula, has been reported to effectively alleviate the clinical symptoms of COPD patients. However, there is a lack of multi-centre, randomised, double-blind, controlled clinical trials documenting the clinical efficacy and safety of this formula in the treatment of acute exacerbation of COPD (AECOPD).

[Effect of Qibai Pingfei capsule medicated serum on protein expressions of KATP channel in pulmonary arterial smooth muscle cells via nitric oxide].

To investigate the ATP-sensitive potassium channel (KATP channel) protein expressions during different periods under hypoxia condition and explore the effect of Qibai Pingfei capsule medicated serum (hereinafter referred to as QBPF) on the correlation between the protein expressions of KATP channel and nitric oxide in rat pulmonary arterial smooth muscle cells(PASMCs). Qibai Pingfei capsules were given to SD rats via continuous gavage for 10 days to obtain QBPF. Primary rats PASMCs were cultured by the direct adherent culture method.