Preparation of berberine hydrochloride dry powder inhalation and its effect on Staphylococcus aureus pneumonia / 中草药

ABSTRACT

Objective: To prepare berberine hydrochloride dry powder inhalation, and investigate its pharmacological effect on Staphylococcus aureus pneumonia after pulmonary administration. Methods: Berberine hydrochloride dry powder by spray drying and the experimental conditions was optimized by orthogonal experiment. The lung deposition, fluidity and appearance were characterized. The pharmacodynamic effects of the preparations on S. aureus pneumonia were performed with SD rats. Results: A berberine hydrochloride dry powder was prepared at an inlet temperature of 130 ℃ with a gas volume flow of 610 L/h and a feed volume flow of 3 mL/min. The berberine hydrochloride dry powder had a lung deposition rate (FPF) of 76.4% and an aerodynamic diameter of 4.61 μm. The stability index (SI) ≈ 1, the aeration energy ratio (AR) = 1.76 > 1, and the inflation energy (AE10) = 2.1 mJ < 10 mJ. Through the pharmacodynamic evaluation of S. aureus, we can know that the berberine hydrochloride dry powder inhalation effectively improved the pathological state of pneumonia rats, and significantly reduced (P < 0.05) the number of WBC, neutrophils, and the expression of inflammatory factors (TNF-α, IL-1β, and IL-6) in pneumonia rats. Conclusion: Berberine hydrochloride dry powder inhalation can directly reach the lesion site through pulmonary administration, so it has significant therapeutic effect on S. aureus pneumonia.