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1.上海中医药大学附属曙光医院(上海 201203)
2.上海中医药大学(上海 201203)
叶丽亚·叶尔太,女,硕士研究生,主要从事胃肠病的中医药治疗研究工作
凌江红,教授,博士研究生导师; E-mail:ljh18817424778@163.com
收稿日期:2024-12-02,
纸质出版日期:2025-06-10
移动端阅览
叶丽亚·叶尔太 ,贾庆玲,王香香,等.基于KEAP1/PGAM5/AIFM1介导的氧死亡途径探讨柴胡疏肝散治疗功能性消化不良大鼠的作用机制[J].上海中医药杂志,2025,59(6):28-35.
YELIYA Yeertai,JIA Qingling,WANG Xiangxiang,et al.Exploration of mechanism of Chaihu Shugan Powder in treatment of functional dyspepsia in rats based on KEAP1/PGAM5/AIFM1‑mediated oxeiptosis pathway[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(6):28-35.
叶丽亚·叶尔太 ,贾庆玲,王香香,等.基于KEAP1/PGAM5/AIFM1介导的氧死亡途径探讨柴胡疏肝散治疗功能性消化不良大鼠的作用机制[J].上海中医药杂志,2025,59(6):28-35. DOI: 10.16305/j.1007-1334.2025.z20241202001.
YELIYA Yeertai,JIA Qingling,WANG Xiangxiang,et al.Exploration of mechanism of Chaihu Shugan Powder in treatment of functional dyspepsia in rats based on KEAP1/PGAM5/AIFM1‑mediated oxeiptosis pathway[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(6):28-35. DOI: 10.16305/j.1007-1334.2025.z20241202001.
目的
2
探讨柴胡疏肝散对功能性消化不良(FD)大鼠Kelch样环氧氯丙烷相关蛋白1(KEAP1)/磷酸甘油酸变位酶5(PGAM5)/线粒体凋亡诱导因子1(AIFM1)通路及氧死亡的影响,探索其治疗FD的可能机制。
方法
2
SD大鼠随机分为正常组、模型组、柴胡疏肝散组、活性氧(ROS)抑制剂组及柴胡疏肝散+ROS抑制剂组,每组8只。夹尾应激法构建FD大鼠模型,给予相应干预后,半固体糊法检测各组大鼠胃排空率及小肠推进率;苏木精-伊红(HE)染色法观察胃窦组织病理变化;透射电子显微镜(TEM)观察胃肠Cajal间质细胞(ICC)超微结构;化学荧光法检测线粒体ROS、丙二醛(MDA)、超氧化物歧化酶(SOD)含量;免疫荧光共定位法检测KEAP1与PGAM5表达;Western blot法检测氧死亡通路相关蛋白KEAP1、PGAM5、AIFM1、磷酸化AIFM1(p-AIFM1)及核因子E2相关因子2(NRF2)的表达。
结果
2
与正常组比较,模型组胃排空率及小肠推进率明显降低(
P
<
0.05,
P
<
0.01);线粒体ROS、MDA含量显著升高(
P
<
0.01),SOD含量显著降低(
P
<
0.01);KEAP1与PGAM5共定
位表达显著降低(
P
<
0.01);KEAP1、AIFM1、PGAM5蛋白表达均显著升高(
P
<
0.05,
P
<
0.01),NRF2、p-AIFM1蛋白表达明显降低(
P
<
0.01)。与模型组比较,柴胡疏肝散组及柴胡疏肝散+ROS抑制剂组胃排空率及小肠推进率显著提高(
P
<
0.05,
P
<
0.01);线粒体ROS、MDA含量显著降低(
P
<
0.05,
P
<
0.01),SOD含量显著升高(
P
<
0.05);KEAP1与PGAM5共定位表达显著升高(
P
<
0.05,
P
<
0.01);KEAP1、PGAM5、AIFM1蛋白表达均显著降低(
P
<
0.05,
P
<
0.01),NRF2、p-AIFM1蛋白表达显著升高(
P
<
0.05,
P
<
0.01)。
结论
2
柴胡疏肝散可能通过降低ROS水平抑制KEAP1/PGAM5/AIFM1介导的ICC线粒体氧死亡,促进大鼠胃肠动力,从而治疗FD。
Objective
2
To explore the effects of Chaihu Shugan Powder on the KEAP1/PGAM5/AIFM1 signal pathway and oxeiptosis in a functional dyspepsia (FD) rat model, and to discover its potential therapeutic mechanism in treating FD.
Methods
2
SD rats were randomly divided into five groups: normal control group, model group, Chaihu Shugan Powder group, reactive oxygen species (ROS) inhibitor group, and a combination of Chaihu Shugan Powder + ROS inhibitor group, with 8 rats in each group. The FD rat model was established using the tail-clamping stress method. The corresponding intervention was given. Gastric emptying and small intestinal transit rates of rats in each group were assessed using the semi-solid paste method. Histopathological changes in the gastric antrum were evaluated via hematoxylin-eosin (HE) staining, while the ultrastructure of gastrointestinal Cajal interstitial cells (ICC) was observed through transmission electron microscopy (TEM). Mitochondrial ROS, malondialdehyde (MDA), and superoxide dismutase (SOD) contents were measured by chemical fluorescence method. Immunofluorescence co-localization was used to determine the expressions of KEAP1 and PGAM5. Western blot was performed to analyze the protein expressions related to the oxeiptosis pathway [KEAP1, PGAM5, AIFM1, phosphorylated AIFM1 (p-AIFM1) and nuclear factor erythroid 2-related factor 2 (NRF2)].
Results
2
Compared with the normal control group, the model group exhibited significantly reduced gastric emptying and small intestinal transit rates (
P<
0.05,
P
<
0.01), along with elevated mitochondrial ROS and MDA contents (
P<
0.01), and decreased SOD content (
P
<
0.01); KEAP1 and PGAM5 co-localization was significantly reduced (
P<
0.01); KEAP1, AIFM1, and PGAM5 protein expressions were significantly increased (
P
<
0.05,
P<
0.01), and NRF2 and p-AIFM1 expression were significantly decreased (
P<
0.01). Compared with the model group, the gastric emptying rate and intestinal propulsive rate were significantly increased in the Chaihu Shugan Powder group and the Chaihu Shugan Powder+ROS inhibitor group (
P<
0.05,
P<
0.01); The contents of mitochondrial ROS and MDA were significantly decreased (
P<
0.05,
P<
0.01), and the content of SOD was significantly increased (
P
<
0.05). The co-localization of KEAP1 and PGAM5 was significantly increased (
P<
0.05,
P<
0.01). The protein expressions of KEAP1, PGAM5, and AIFM1 were significantly decreased (
P<
0.05,
P<
0.01), while the protein expressions of NRF2 and p-AIFM1 were significantly increased (
P<
0.05,
P<
0.01).
Conclusions
2
Chaihu Shugan Powder
may inhibit KEAP1/PGAM5/AIFM1-mediated mitochondrial oxeiptosis in ICC by reducing ROS level, and promote gastrointestinal motility in rats, thus treating FD.
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