Quercetin improves Pseudomonas aeruginosa-induced lung infection in rats
10.3969/j.issn.1001-1528.2017.09.004
- VernacularTitle:槲皮素改善大鼠铜绿假单胞菌肺感染
- Author:
yuan Pei WANG
1
;
Hong FANG
Author Information
1. 上海中医药大学,上海201203
- Keywords:
quercetin;
Pseudomonas aeruginosa;
lung infection;
T-bet;
Gata-3;
IL-4;
IFN-γ
- From:
Chinese Traditional Patent Medicine
2017;39(9):1777-1782
- CountryChina
- Language:Chinese
-
Abstract:
AIM To study the improvement of quercetin on Pseudomonas aeruginosa-induced lung infection in rats.METHODS Forty SPF SD rats were randomly divided into five groups,eight rats in each group:normal group,P.aeruginosa infection group,quercetin group,levofloxacin group,levofloxacin combined with quercetin group (combined group),the rats were anesthetized and then injected with P.aeruginosa in bronchus.The pathological changes of lung tissue in rats were observed,the contents of IL-4 and IFN-γcytokines,changes of transcription factors T-bet and Gata-3 in lung tissue were detected,and then semi-quantitative RT-PCR was used for the detection of IL-4,IFN-γ,T-bet and Gata-3 mRNA expressions.RESULTS The content of IL-4,levels of IL-4 and Gata-3 mRNA in lung tissue in the quercetin group,the levofloxacin group and the combined group were lower than those in the P.aeruginosa infection group,but the opposite was true in the levels of IFN-γ and T-bet mRNA.CONCLUSION Quercetin and levofloxacin can induce the differentiation from type Th2 to type Th1 for rat organism,but there is no synergistic effect between them.
