WANG Jia-mei,GONG Xue-feng,LYU Ming-sheng,et al.Effect of Baofeikang Granule on Pulmonary Fibrosis in Rats by Regulating Wnt/β-catenin Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(02):47-54.
WANG Jia-mei,GONG Xue-feng,LYU Ming-sheng,et al.Effect of Baofeikang Granule on Pulmonary Fibrosis in Rats by Regulating Wnt/β-catenin Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(02):47-54. DOI: 10.13422/j.cnki.syfjx.20212221.
Effect of Baofeikang Granule on Pulmonary Fibrosis in Rats by Regulating Wnt/β-catenin Signaling Pathway
To explore the intervention effect of Baofeikang granule (BFK) on the rat model of pulmonary fibrosis through the Wnt/
β
-catenin signaling pathway.
Method
2
After adaptive feeding for one week, 50 healthy rats were randomly divided into a blank group (
n
=8) and an experimental group (
n
=42). After anesthesia, the rats in the experimental group were injected with bleomycin sulfate solution (5 mg·kg
-1
) into the trachea for the induction of the pulmonary fibrosis model. Those in the blank group were injected with the same amount of normal saline under the same manipulation. On the 7
th
day after modeling, one of the remaining 33 rats alive was randomly removed, and the other 32 model rats were assigned into a model group (
n
=8), a prednisone acetate (1.17 mg·kg
-1
) group (
n
=8), a low-dose BFK (13.59 g·kg
-1
) group (
n
=8), and a high-dose BFK (27.18 g·kg
-1
) group (
n
=8). The rats in the groups with drug intervention were treated correspondingly by gavage once per day for 21 days, and those in the blank group and the model group received the same amount of normal saline. The pulmonary compliance and ventilatory function, the scores of pathological changes and fibrosis, the levels of type Ⅰ collagen (Col Ⅰ) in lung tissues and hydroxyproline (HYP) in the serum, and the relative expression of Wnt3a and
β
-catenin protein in lung tissues were compared.
Result
2
Compared with the blank group, the model group showed reduced pulmonary function indexes, such as forced vital capacity (FVC), peak expiratory flow (PEF), the resistance of lung (RL), and dynamic compliance (Cdyn) (
0.01), elevated levels of Col Ⅰ in lung tissues and HYP in the serum (
P
<
0.01), and up-regulated expression of Wnt3a and
β
-catenin (
P
<
0.01). FVC, PEF, and Cdyn levels in the prednisone acetate group and the BFK groups were higher than those in the model group (
P
<
0.05,
P
<
0.01). Pathological changes were improved in the groups with drug intervention, and fibrosis scores were decreased as compared with the model group (
P
<
0.05,
P
<
0.01). The scores in the BFK groups were lower than that in the prednisone acetate group (
P
<
0.01). The levels of Col Ⅰ and HYP in the groups with drug intervention were lower than those in the model group (
P<
0.05,
P<
0.01). The level of Col Ⅰ in the prednisone acetate group was higher than that in the high-dose BFK group (
P
<
0.01). The levels of serum HYP in the BFK groups was lower than that in the prednisone acetate group (
P
<
0.01). The protein expression of Wnt3a in lung tissues of the high-dose BFK group was lower than that of the model group (
P
<
0.05). The protein expression of
β
-catenin in the prednisone acetate group and the BFK groups was lower than that in the model group (
P
<
0.05,
P
<
0.01), and the expression level in the high-dose BFK group was lower than that in the prednisone acetate group (
P
<
0.01).
Conclusion
2
BFK can relieve bleomycin sulfate-induced pulmonary fibrosis, reduce collagen deposition, improve pulmonary compliance, and enhance pulmonary ventilatory function in rats. One of its mechanisms is presumedly the inhibition of the Wnt/
β
-catenin signaling pathway.
关键词
保肺康颗粒肺纤维化大鼠Wnt/β-连环蛋白(β-catenin)信号通路胶原沉积
Keywords
Baofeikang granulerats with pulmonary fibrosisWnt/β-catenin signaling pathwaycollagen deposition
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