机构地区:[1]江西中医药大学实验动物科技中心,江西南昌330004 [2]江西中医药大学研究生院,江西南昌330004 [3]江西中医药大学方证研究中心,江西南昌330004
出 处:《中药新药与临床药理》2024年第1期1-9,共9页Traditional Chinese Drug Research and Clinical Pharmacology
基 金:国家自然科学基金项目(82260863);江西省自然科学基金项目(20232BAB206172);江西省中医药管理局科技计划项目(2022A344);江西省卫生和计划生育委员会科技计划项目(202110121);江西省教育厅科学技术研究项目(GJJ201239,GJJ2200961);江西中医药大学博士启动金项目(2019WBZR011)。
摘 要:目的探究补脾益肠丸(Bupi Yichang Pills)对溃疡性结肠炎小鼠的抗炎作用及潜在作用机制。方法采用葡聚糖硫酸钠(DSS)建立溃疡性结肠炎模型,同步给予低、中、高剂量补脾益肠丸(1.5、3.0、6.0 g·kg^(-1)·d^(-1))及美沙拉嗪(300 mg·kg^(-1)·d^(-1)),观察小鼠一般表现并称质量,苏木素-伊红染色法观察小鼠结肠组织病理损伤情况,实时荧光定量PCR(qPCR)、酶联免疫吸附法(ELISA)法测定炎性细胞因子[肿瘤坏死因子(TNF)-α、白细胞介素(IL)-1β、IL-6、IL-10、IL-35、转化生长因子(TGF)-β1]水平,qPCR、蛋白免疫印迹(Western Blot)法检测葡萄糖转运体及糖酵解代谢激酶的mRNA及蛋白表达水平。结果低、中、高剂量补脾益肠丸明显下调结肠炎小鼠的疾病活动指数(P<0.05,P<0.01);其体质量、结肠长度明显增大,而结肠质量、结肠质量指数、单位结肠质量指数均明显减小(P<0.05,P<0.01),且结肠组织溃疡形成及炎性细胞浸润明显改善;中、高剂量补脾益肠丸明显下调结肠炎小鼠结肠组织促炎性细胞因子TNF-α、IL-1β、IL-6的含量及mRNA表达水平(P<0.01),而抗炎性细胞因子IL-10、IL-35、TGF-β1的含量及其mRNA表达水平被明显上调(P<0.01);进一步研究发现在mRNA和蛋白水平上,高剂量补脾益肠丸可明显下调结肠组织中葡萄糖转运体(Glut1、Glut2、Glut4)和糖酵解激酶(HK2、Aldolase A、PKM2)的表达(P<0.01)。结论补脾益肠丸能有效缓解DSS诱导的小鼠溃疡性结肠炎,其作用机制与改善糖酵解代谢途径及调节炎性细胞因子表达有关。Objective To investigate the anti-inflammatory effects of Bupi Yichang Pills on mice with experimental colitis and its potential mechanism of action.Methods Dextran sulfate sodium(DSS)was used to model the experimental colitis,and low-,medium-and high-doses of Bupi Yichang Pills(1.5,3.0,6.0 g·kg^(-1)·d^(-1))and Mesalazine(300 mg·kg^(-1)·d^(-1))were fed at the same time.Mice were observed for general behavior and weighed.Hematoxylin-eosin staining was used to observe the pathological injury of colonic tissues.qPCR and ELISA were used to detect the levels of inflammatory cytokines(TNF-α,IL-1β,IL-6,IL-10,IL-35 and TGF-β1),qPCR and Western Blot were used to detect the mRNA and protein levels of glucose transporters and glycolytic kinases.Results Low-,medium-and high-doses of Bupi Yichang Pills significantly down-regulated disease activity index in colitis mice(P<0.05,P<0.01).The body mass and colon length were significantly increased,while colon mass,colon mass index and unit colon mass index were significantly reduced(P<0.05,P<0.01),and ulcer formation and inflammatory cell infiltration in colonic tissue were significantly improved.In addition,medium-and high-doses of Bupi Yichang Pills significantly down-regulated the mRNA levels and concentrations of pro-inflammatory cytokines including TNF-α,IL-1βand IL-6(P<0.01),while significantly up-regulated the mRNA levels and concentrations of anti-inflammatory cytokines such as IL-10,IL-35 and TGF-β1(P<0.01).We further found that high-dose of Bupi Yichang Pills significantly down-regulated the mRNA and protein expressions of glucose transporters(Glut1,Glut2,Glut4)and glycolytic kinases(HK2,Aldolase A,PKM2)in colonic tissue(P<0.01).Conclusions Bupi Yichang Pills effectively alleviates DSS-induced experimental colitis,and its specific mechanism of action is related to the improvement of glycolytic metabolic pathways and the regulation of inflammatory cytokine expression.
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