Sishenwan Ameliorates Visceral Sensitivity in Rat Model of Diarrhea-predominant Irritable Bowel Syndrome （Spleen-kidney Yang Deficiency） by Regulating p38 MAPK/JNK/TRPV1 Pathway
10.13422/j.cnki.syfjx.20241207
- VernacularTitle:四神丸调控p38 MAPK/JNK/TRPV1信号通路改善脾肾阳虚型腹泻型肠易激综合征大鼠的内脏敏感性
- Author:
Siqi LI
1
;
Yunlian HU
2
;
Chengxia SU
1
;
Min XIAO
2
;
Xiaocui JIANG
2
;
Na WEN
2
;
Qian ZHANG
2
Author Information
1. College of Traditional Chinese Medicine（TCM），Hubei University of Chinese Medicine， Wuhan 430061，China
2. Hubei Shizhen Laboratory，Wuhan 430061，China
- Publication Type:Journal Article
- Keywords:
diarrhea-predominant irritable bowel syndrome;
syndrome of spleen-kidney Yang deficiency;
Sishenwan;
p38 mitogen-activated protein kinase （MAPK）/c-Jun N-terminal kinase （JNK）/transient receptor potential vanilloid 1 （TRPV1） pathway;
visceral sensitivity
- From:
Chinese Journal of Experimental Traditional Medical Formulae
2024;30(21):10-18
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo investigate the effect and possible mechanism of Sishenwan in ameliorating visceral sensitivity in the rat model of diarrhea-predominant irritable bowel syndrome （IBS-D） due to spleen-kidney Yang deficiency. MethodForty male SPF-grade rats were randomly assigned into five groups： blank control， model， low- （3.51 g·kg-1） and high-dose （7.02 g·kg-1） Sishenwan， and Peifikang （0.54 g·kg-1） groups. Except the blank control group， the other groups underwent maternal separation stress and Sennae Folium decoction gavage for the modeling of IBS-D due to spleen-kidney Yang deficiency. After corresponding drug interventions， the general conditions of the rats were observed， and the number of defecation pellets within 6 h and the minimum threshold of abdominal withdrawal reflex （AWR） were measured. Enzyme-linked immunosorbent assay （ELISA） was used to measure the serum levels of tumor necrosis factor （TNF）-α， gastrin （GAS）， corticosterone （CORT）， and adrenocorticotropic hormone （ACTH）. Hematoxylin-eosin （HE） staining was employed to observe pathological changes in the colon tissue. Toluidine blue staining was used to assess mast cell degranulation in the colon tissue. Western blot was performed to determine the protein levels of p38 mitogen-activated protein kinase （MAPK）， c-Jun N-terminal kinase （JNK）， transient receptor potential vanilloid 1 （TRPV1）， and protease-activated receptor 2 （PAR2） in the colon tissue. Immunohistochemistry was employed to measure the protein level of TRPV1 in the colon tissue， and immunofluorescence was used to detect the positive expression of substance P （SP） and calcitonin gene-related peptide （CGRP） in the colon tissue. ResultCompared with the blank control group， the model group showed increased number of defecation pellets within 6 h （P<0.01）， decreased minimum threshold of AWR （P<0.01）， elevated serum TNF-α level （P<0.01）， lowered levels of GAS， CORT， and ACTH （P<0.05， P<0.01）， increased mast cell degranulation rate （P<0.01）， increased positive expression of TRPV1， SP， and CGRP （P<0.05， P<0.01）， and upregulated protein levels of p38 MAPK， JNK， TRPV1， and PAR2 （P<0.01）. Compared with the model group， the high-dose Sishenwan group showed increased minimum threshold of AWR （P<0.01）， reduced defecation frequency in both the high-dose Sishenwan and Peifikang groups （P<0.05， P<0.01）， lowered TNF-α level （P<0.05， P<0.01）， elevated levels of GAS， CORT， and ACTH （P<0.05， P<0.01）， decreased mast cell degranulation rate （P<0.01）， reduced positive expression of TRPV1， SP， and CGRP （P<0.05， P<0.01）， and downregulated protein levels of p38 MAPK， JNK， TRPV1， and PAR2 （P<0.05， P<0.01）. ConclusionSishenwan can ameliorate visceral sensitivity in the rat model of diarrhea-predominant irritable bowel syndrome due to spleen-kidney Yang deficiency by regulating the p38 MAPK/JNK/TRPV1 signaling pathway.
