Effects of Tingli Dazao Xiefei Decoction on the immune inflammation and intestinal flora in asthmatic rats
10.16438/j.0513-4870.2022-0116
- VernacularTitle:葶苈大枣泻肺汤对哮喘大鼠免疫炎症和肠道菌群的影响
- Author:
Bei-bei ZHANG
1
,
2
,
3
,
4
;
Meng-nan ZENG
1
,
2
,
3
,
4
;
Qin-qin ZHANG
1
,
2
;
Ru WANG
1
,
2
;
Peng-li GUO
1
,
2
;
Wan-qing LU
1
;
Ju-fang JIA
1
,
2
;
Meng LIU
1
,
2
;
Yu-han ZHANG
1
,
2
;
Wei-sheng FENG
1
,
2
,
3
,
4
;
Xiao-ke ZHENG
1
,
2
,
3
,
4
Author Information
1. College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
2. The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou 450046, China
3. Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-constructed by Henan Province &
4. Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou 450046, China
- Publication Type:Research Article
- Keywords:
Tingli Dazao Xiefei Decoction;
asthma;
immune response;
inflammation;
intestinal flora
- From:
Acta Pharmaceutica Sinica
2022;57(8):2364-2377
- CountryChina
- Language:Chinese
-
Abstract:
The study aims to explore the intervention mechanism of Tingli Dazao Xiefei Decoction on asthma from the perspective of immune inflammation and intestinal flora, providing a theoretical basis for guiding clinical medication. The ovalbumin (OVA) asthmatic rat model was established by intraperitoneal injection of OVA sensitization solution and aerosol challenge, and divided into control (CON), model (M), dexamethasone group (DEX, 0.075 mg·kg-1) and Tingli Dazao Xiefei Decoction (TLDZ, 3.5 g·kg-1). Firstly, the effects of Tingli Dazao Xiefei Decoction on asthma symptoms of rats, lung and trachea pathological changes of asthmatic rats were observed by inducing cough and asthma experiment, phenol red excretion, hematoxylin-eosin staining (H&E), Masson and periodic acid Schiff (PAS) staining; the levels of transforming growth factor β1 (TGF-β1), interleukin (IL) 6 and IL-10 in rat serum and the levels of interferon γ (IFN-γ), immunoglobulin E (IgE), IL-4, IL-17A and tumor necrosis factor α (TNF-α) in bronchoalveolar lavage fluid (BALF) were detected by ELISA; the mRNA levels of IL-5, IL-13 and IL-33 in the lung were determined by qRT-PCR; the levels of macrophages and neutrophils in the spleen and the levels of natural killer cell (NK), helper T cell (Thc), dendritic cell (DC), regulatory T cell (Treg) and T helper cell 17 (Th17) in the peripheral blood were measured by flow cytometry combined with immunohistochemistry; the intestinal flora of asthmatic rats were analyzed by 16S rDNA high-throughput sequencing. Pathology and inflammatory results showed that Tingli Dazao Xiefei Decoction could effectively alleviate the asthma symptoms in rats, improve the pathological changes of lung tissue, reduce the production of goblet cells and collagen fibers, and reduce the inflammatory response in asthmatic rats; the results of immune cells showed that Tingli Dazao Xiefei Decoction could effectively increase the levels of NK, Thc, DC and Treg cells and reduce the levels of macrophages, neutrophils and Th17 cells in asthmatic rats; the results of intestinal flora showed that Tingli Dazao Xiefei Decoction could increase the levels of Lactobacillus, Ruminococcus, Christensenellaceae, Bifidobacterium and Eubacterium]_xylanophilum-group, and decrease the levels of Firmicutes, Desulfovibrio, Mucispirillum and Romboutsia in asthmatic rats. Therefore, it is speculated that Tingli Dazao Xiefei Decoction can improve the symptom of asthmatic rats by regulating the immune inflammation and intestinal flora in the asthmatic rats. All animal experiments in this article were approved by the Ethics Committee of Henan University of Chinese Medicine.
