天然产物研究与开发 ›› 2025, Vol. 37 ›› Issue (7): 1228-1235.doi: 10.16333/j.1001-6880.2025.7.004 cstr: 32307.14.1001-6880.2025.7.004

• 研究论文 • 上一篇    下一篇

沙棘黄酮提取物对四氯化碳诱导小鼠急性肝损伤的保护作用机制

阮凤梅,付伟阳,黄小红,华莹玥,黄莉梅,李玉锋*   

  1. 西华大学食品与生物工程学院,成都 610039
  • 出版日期:2025-07-28 发布日期:2025-07-28
  • 基金资助:
    四川省科技厅重大项目(2020YFN0148)

Protective mechanism of Hippophae rhamonides flavonoid extract on CCl4-induced acute liver injury in mice

RUAN Feng-mei,FU Wei-yang,HUANG Xiao-hong,HUA Ying-yue,HUANG Li-mei,LI Yu-feng   

  1. School of Food and Bioengineering,Xihua University,Chengdu 610039,China
  • Online:2025-07-28 Published:2025-07-28

摘要:

探究沙棘黄酮提取物(total flavones from Hippophae rhamnoides L.,TFH)对CCl4诱导的小鼠急性肝损伤(acute liver injury,ALI)的保护作用。以腹腔注射0.2% CCl4-橄榄油溶液诱发小鼠ALI。观察各组小鼠肝功能,肝脏组织形态,检测小鼠抗氧化以及炎症因子等各项指标。采用RT-qPCR技术检测相关基因表达水平。与空白组相比,模型组血清中天门冬氨酸氨基转移酶(aspartate aminotransferase,AST)、丙氨酸氨基转移酶(alanine aminotransferase,ALT)水平、丙二醛(malondialdehyde,MDA)含量以及肝组织中肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白细胞介素-6(interleukin-6,IL-6)炎症因子水平均显著升高(P < 0.01);肝组织中超氧化物歧化酶(superoxide dismutase,SOD)活性和谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)水平显著降低(P < 0.01);小鼠肝组织坏死、炎症细胞浸润,肝脏增大,肝脏指数显著升高(P < 0.01);肝细胞中TNF-αIL-6以及信号传导和转录激活因子3(signal transducer and activator of transcription 3,STAT3)mRNA表达量显著升高(P < 0.01)。与模型组相比,各TFH给药组血清中AST、ALT水平、MDA含量以及肝组织中TNF-α、IL-6炎症因子水平均不同程度地降低;肝组织中SOD活性和GSH-Px水平显著升高(P < 0.01);通过病理组织染色,小鼠肝细胞坏死和炎性细胞浸润得到明显缓解,病理损伤减轻;最后实时荧光定量PCR结果表明,肝细胞中TNF-αIL-6以及STAT3 mRNA表达量下调。TFH可通过调节机体内炎症因子的表达,改善相关基因例如TNF-αIL-6以及STAT3等的表达量,缓解小鼠肝脏损伤,抑制Janus激酶-信号转导和转录活化(Janus kinase/signal transducers and activators of transcription,JAK/STAT)信号通路的激活,调节信号通路下游基因STAT3的表达,从而发挥对CCl4诱导ALI小鼠的保护作用。

关键词: 沙棘黄酮, 炎症因子, 急性肝损伤, RT-qPCR

Abstract:

This study aimed to investigate the hepatoprotective effects of total flavones from Hippophae rhamnoides L.(TFH) against carbon tetrachloride CCl₄-induced acute liver injury (ALI) in mice. ALI was induced in mice via intraperitoneal injection of 0.2% CCl₄-olive oil solution. Hepatic function, histopathological morphology, and biochemical markers related to oxidative stress, and inflammatory cytokines were evaluated. The mRNA expression levels of key genes were quantified using RT-qPCR. Compared with the control group, the CCl₄-induced model group exhibited significantly elevated serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and malondialdehyde (MDA), along with increased hepatic levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) (P < 0.01). Conversely, the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in liver tissues were markedly reduced (P < 0.01). Histopathological analysis revealed extensive hepatocyte necrosis, inflammatory infiltration, hepatic enlargement, and a significantly higher liver index (P < 0.01). Furthermore, the mRNA expression levels of TNF-α, IL-6, and signal transducer and activator of transcription 3 (STAT3) were significantly upregulated in the model group (P < 0.01). In contrast, TFH treatment dose-dependently attenuated these alterations. Specifically, TFH administration reduced serum AST, ALT, and MDA levels, decreased hepatic TNF-α and IL-6 concentrations, and enhanced SOD and GSH-Px activities (P < 0.01). Histopathological improvements, including reduced hepatocyte necrosis and inflammatory infiltration, were observed. RT-qPCR analysis confirmed the downregulation of TNF-α, IL-6, and STAT3 mRNA expression in TFH-treated groups. TFH exerts hepatoprotective effects against CCl₄-induced ALI by modulating inflammatory cytokine expression, suppressing the activation of the Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway, and downregulating the expression of downstream gene such as STAT3.

Key words: Hippophae rhamnoides flavonoids, inflammatory factors, acute liver injury, RT-qPCR

中图分类号:  R575