HOU Dan,HUANG Shuai-yang,LYU Ming-sheng,et al.Therapeutic Effect and Antioxidant Mechanism of Xiaochuanning Granule on Psychological Stress Related Asthma in Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(02):55-61.
HOU Dan,HUANG Shuai-yang,LYU Ming-sheng,et al.Therapeutic Effect and Antioxidant Mechanism of Xiaochuanning Granule on Psychological Stress Related Asthma in Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(02):55-61. DOI: 10.13422/j.cnki.syfjx.20212224.
Therapeutic Effect and Antioxidant Mechanism of Xiaochuanning Granule on Psychological Stress Related Asthma in Rats
To observe the therapeutic effect and antioxidant mechanism of Xiaochuanning granule on psychological stress-related asthma in rats.
Method
2
The 6-week-old male SD rats were randomly divided into the normal group, asthma group, stress group, stress-related asthma group, western medicine group (atomization of budesonide suspension) and traditional Chinese medicine (TCM) group (Xiaochuanning granule 2.48 g·kg
-1
). The asthma model was established during 28 days by intraperitoneal injection of 10% ovalbumin(OVA)on the 1
st
and 8
th
days and inhaling of vapourized 1% OVA started at the 15
th
day. Stress group, stress-related asthma group, western medicine group and TCM group were given restraint stimulation during the 28 days to establish the psychological stress-related asthma model. Rats in each group were administered with corresponding drug for 14 days from the 15
th
day. The sucrose preference test and open field test were performed at the 15
th
and 28
th
days. At the end of experiment, the body weight, serum interleukin-4 (IL-4), interleukin-5 (IL-5) and interleukin-13 (IL-13) levels, as well as the levels of malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione (GSH) in lung tissues were detected by assay kits. Hematoxylin-eosin(HE) staining was conducted to observe the pathological changes in lung tissues. Meanwhile, Western blot was used to detect the protein expression of nuclear factor erythroid 2-related factor 2 (Nrf2) and hemeoxygenase-1 (HO-1) in lung tissues.
Result
2
Compared with the stress-related asthma group, the body weight, sugar water consumption rate and open field distance in the TCM group were significantly increased (
P
<
0.05), and the serum IL-4, IL-5, IL-13 levels were significantly decreased (
P
<
0.05), the levels of SOD and GSH in lung tissues increased significantly (
P
<
0.05), while the level of MDA decreased significantly (
P
<
0.05). HE staining showed that the bronchial mucosal injury, inflammatory cell infiltration, gland hyperplasia, epithelial degeneration and necrosis were significantly ameliorated in the TCM group than in the stress-related asthma group. The expression of Nrf2 and HO-1 protein in lung tissues also increased significantly (
P<
0.05).
Conclusion
2
Xiaochuanning Granule can regulate the psychological stress state of stress-related asthmatic rats, alleviate airway inflammatory reaction, and suppress oxidation, which is related to its up-regulation of the Nrf2/HO-1 protein expression.
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