1.重庆医科大学公共卫生学院,重庆 400016
2.九龙坡疾病预防控制中心微生物检验科,重庆 400039
3.成都市疾病预防控制中心理化检验科,成都 610041
4.重庆医科大学实验教学管理中心,重庆 400016
Received:28 January 2025,
Revised:2025-04-07,
Accepted:17 April 2025,
Published:28 August 2025
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项青青,赖凤,肖虹,等.大柴胡汤缓解葡聚糖硫酸钠诱导的溃疡性结肠炎及肝损伤并与其对小鼠肠道菌群的调控作用相关[J].重庆医科大学学报,2025,50(8):1084-1095.
Xiang Qingqing,Lai Feng,Xiao Hong,et al.Effect of Dachaihu decoction on dextran sodium sulfate-induced ulcerative colitis and liver injury and its association with gut microbiota modulation in mice[J].Journal of Chongqing Medical University,2025,50(8):1084-1095.
项青青,赖凤,肖虹,等.大柴胡汤缓解葡聚糖硫酸钠诱导的溃疡性结肠炎及肝损伤并与其对小鼠肠道菌群的调控作用相关[J].重庆医科大学学报,2025,50(8):1084-1095. DOI: 10.13406/j.cnki.cyxb.003894.
Xiang Qingqing,Lai Feng,Xiao Hong,et al.Effect of Dachaihu decoction on dextran sodium sulfate-induced ulcerative colitis and liver injury and its association with gut microbiota modulation in mice[J].Journal of Chongqing Medical University,2025,50(8):1084-1095. DOI: 10.13406/j.cnki.cyxb.003894.
目的
2
探讨大柴胡汤(Dachaihu decoction,DCD)对葡聚糖硫酸钠(dextran sodium sulfate,DSS)诱导的溃疡性结肠炎(ulcerative colitis,UC)小鼠及其肝损伤的预防和治疗效果及潜在机制,并探究DCD的益处与肠道菌群调节之间的联系。
方法
2
给小鼠施用DCD(20.10、10.05 g/kg)2周,第2周让小鼠自由摄取含3%DSS的饮用水诱导UC。通过组织病理学、RT-qPCR和16S rRNA测序评估DCD对UC小鼠的影响。
结果
2
DCD预处理可明显缓解DSS诱导的UC小鼠体重下降、伴有黏液和血液的腹泻、结肠组织学异常和结肠缩短现象。此外,DCD预处理显著上调结肠组织中Occludin、ZO-1和MUC-2的水平,阻止UC小鼠肠屏障受损。DCD预处理减轻结肠组织和肝脏中炎性细胞浸润情况,同时显著降低IL-1β、IL-6、TNF-α、iNOS、COX-2和NLRP3相关促炎因子的表达水平,发挥其对UC小鼠及其肝损伤的保护作用。值得注意的是,DCD调节UC小鼠肠道微生物群失衡,显著富集了Lactobacillus和Bifidobacterium等有益菌属;减少有害菌属Norank_f_Desulfovibrionaceae和Escherichia-Shigella的丰度。
结论
2
DCD可通过保护肠道屏障、抑制炎症和调节肠道菌群而缓解DSS诱导的UC,并发挥保肝作用。
Objective
2
To investigate the preventive and therapeutic effects and mechanisms of Dachaihu decoction(DCD) on dextran sodium sulfate(DSS)-induced ulcerative colitis(UC) and liver injury in mice,as well as the association between DCD benefits and gut microbiota modulation.
Methods
2
Mice were treated with DCD(20.10 and 10.05 g/kg) for 2 weeks,with free access to drinking water containing 3% DSS in the second week to induce UC. Histopathological examination,RT-qPCR and 16S rRNA sequencing were used to investigate the effect of DCD on UC mice.
Results
2
DCD pretreatment significantly alleviated weight loss,bloody diarrhea with mucus,histopathological abnormalities of the colon,and colon shortening in mice with DSS-induced UC. In addition,DCD pretreatment significantly upregulated the levels of Occludin,ZO-1,and MUC-2 in the colon and protected the intestinal barrier of mice. DCD pretreatment also alleviated inflammatory cell infiltration in the colon and the liver and significantly reduced the expression levels of the proinflammatory factors such as IL-1β,IL-6,TNF-α,iNOS,COX-2,and NLRP3,thereby exerting a protective effect against UC and liver injury. It should be noted that DCD corrected gut microbiota imbalance in UC mice by enriching probiotic bacteria such as Lactobacillus and Bifidobacterium and reducing harmful bacteria such as Norank_f_Desulfovibrionaceae and Escherichia-Shigella.
Conclusion
2
DCD can alleviate DSS-induced UC and exert a liver-protecting effect by protecting intestinal barrier,inhibiting inflammation,and regulating gut microbiota.
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