WANG Zhen,WANG Min,DENG Qiqi,et al.Effect and Mechanism of Baoshen Prescription in Alleviating Renal Fibrosis in UUO Mice by Regulating ERK/p38 MAPK Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(21):69-78.
WANG Zhen,WANG Min,DENG Qiqi,et al.Effect and Mechanism of Baoshen Prescription in Alleviating Renal Fibrosis in UUO Mice by Regulating ERK/p38 MAPK Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(21):69-78. DOI: 10.13422/j.cnki.syfjx.20231042.
Effect and Mechanism of Baoshen Prescription in Alleviating Renal Fibrosis in UUO Mice by Regulating ERK/p38 MAPK Signaling Pathway增强出版
To observe the protective effect of Baoshen prescription against renal fibrosis and explore its underlying mechanism through network pharmacology, molecular docking, and
in vivo
experiments.
Method
2
All mice were randomly divided into sham surgery group, model group, low-, medium-, and high-dose Baoshen prescription groups, and a benazepril hydrochloride group. Unilateral ureteral obstruction (UUO) was performed to establish a renal fibrosis model, and the administration of Baoshen prescription at low, medium, and high doses (0.455, 0.91, and 1.82 g·kg
-1
), and benazepril hydrochloride (1.68 mg·kg
-1
) or distilled water began on the same day as model preparation. Mice in the model group and the sham surgery group were given an equal volume of distilled water. The intervention was carried out once daily for 14 days. Mouse serum levels of blood urea nitrogen (BUN) and creatinine (Cr) were measured. Hematoxylin-eosin (HE) staining and Masson staining were used to observe renal pathological changes. Western blot and immunohistochemistry were used to assess the expression of fibronectin (FN),
α
-smooth muscle actin (
α
-SMA), and E-cadherin, which are related to renal fibrosis. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to measure the mRNA expression of transforming growth factor-
β
1
(TGF-
β
1
), tumor necrosis factor-
α
(TNF-
α
), NOD-like receptor protein 3 (NLRP3), and monocyte chemoattractant protein-1 (MCP-1) in renal tissues. The mechanism of Baoshen prescription in improving renal fibrosis was explored through network pharmacology, molecular docking, and Western blot experiments.
Result
2
Compared with the sham surgery group, the model group showed significantly increased levels of BUN and Cr (
P
<
0.01). The model group exhibited abnormal renal glomerular morphology, loss of tubular brush borders, tubular dilation, and an enlarged area of blue collagen fibers. Mice in the model group showed significantly elevated levels of FN and
α
-SMA (
P
<
0.01), significantly decreased expression of E-cadherin (
P
<
0.01), and significantly increased expression of TGF-
β
1
, TNF-
α
, NLRP3, and MCP-1 mRNA (
P
<
0.05,
P
<
0.01). Compared with the model group, the Baoshen prescription groups showed significantly reduced BUN and Cr levels (
P
<
0.01), alleviated renal pathological damage, improved fibrosis, reduced expression of FN and
α
-SMA (
P
<
0.01), increased E-cadherin expression (
P
<
0.01), and downregulated mRNA expression of TGF-
β
1
, TNF-
α
, NLRP3, and MCP-1 (
P
<
0.05,
P
<
0.01). Network pharmacology and molecular docking predicted that Baoshen prescription could potentially improve renal fibrosis through the extracellular signal-regulated kinase (ERK)/p38 mitogen-activated protein kinase (MAPK) signaling pathway. Pharmacological research showed that compared with the sham surgery group, the model group exhibited significantly increased expression of phosphorylated (p)-ERK and p-p38 (
P
<
0.05,
P
<
0.01). Compared with the model group, medium- and high-dose Baoshen prescription groups showed significantly downregulated expression of p-ERK and p-p38 proteins (
P
<
0.05,
P
<
0.01).
Conclusion
2
Baoshen prescription can effectively improve renal fibrosis induced by UUO in mice, and its mechanism of action may be related to the ERK/p38 MAPK signaling pathway.
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