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1.江西中医药大学 附属医院,南昌 330006
2.南昌市洪都中医院,南昌 330006
3.江中药业股份有限公司,南昌 330004
4.河北中医学院,石家庄 050091
吴娜,博士,主治中医师,讲师,从事中医药防治消化系统疾病研究工作研究,E-mail:wuna0791@163.com
董贤慧,博士,副教授,硕士生导师,从事中医药防治老年性痴呆的发病机制研究,E-mail:dongxianhuitj@126.com
收稿日期:2020-12-08,
网络出版日期:2021-02-26,
纸质出版日期:2021-04-20
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吴娜,万治平,曾娟等.黄芩汤对溃疡性结肠炎小鼠氧化应激及铁死亡相关指标GSH-Px4,P53,SLC7A11的影响[J].中国实验方剂学杂志,2021,27(08):17-24.
WU Na,WAN Zhi-ping,ZENG Juan,et al.Effect of Huangqintang on Oxidative Stress and Ferroptosis-related Indexes GSH-Px4,P53,SLC7A11 in Ulcerative Colitis Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(08):17-24.
吴娜,万治平,曾娟等.黄芩汤对溃疡性结肠炎小鼠氧化应激及铁死亡相关指标GSH-Px4,P53,SLC7A11的影响[J].中国实验方剂学杂志,2021,27(08):17-24. DOI: 10.13422/j.cnki.syfjx.20210505.
WU Na,WAN Zhi-ping,ZENG Juan,et al.Effect of Huangqintang on Oxidative Stress and Ferroptosis-related Indexes GSH-Px4,P53,SLC7A11 in Ulcerative Colitis Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(08):17-24. DOI: 10.13422/j.cnki.syfjx.20210505.
目的
2
探讨黄芩汤治疗溃疡性结肠炎(UC)的可能作用机制。
方法
2
采用葡聚糖硫酸钠进行造模,实验分正常组,模型组,黄芩汤低、中、高剂量组(4.55,9.1,18.2 g·kg
-1
)5个组。造模同时给予灌胃给药,连续7 d,第8天实验结束时采集标本测量结肠长度、质量,计算结肠质量指数,苏木素-伊红(HE)染色观察病理变化,生化试剂检测小鼠血清铁离子,超氧化物歧化酶(SOD),还原型谷胱甘肽(GSH),过氧化氢酶(CAT),髓过氧化物酶(MPO)等含量,蛋白免疫印迹法(Western blot)检测结肠中长链脂酰辅酶A合成酶4(ACSL4),谷胱甘肽过氧化物酶4(GSH-Px4),铁蛋白重链(FTH1)蛋白的表达。实时荧光定量聚合酶链式反应(Real-time PCR)检测结肠组织中肿瘤蛋白53(P53),胱氨酸/谷氨酸逆向转运蛋白溶质载体家族7成员11(SLC7A11)mRNA表达水平。
结果
2
与正常组比较,模型组小鼠血清MPO,铁离子含量,ACSL4蛋白阳性表达及P53 mRNA表达均明显升高(
P
<
0.05),血清SOD,CAT,GSH含量,GSH-Px4,FTH1蛋白表达及SLC7A11 mRNA表达均显著降低(
P
<
0.01);与模型组比较,黄芩汤干预后,小鼠血清MPO,铁离子含量,ACSL4蛋白阳性表达及P53 mRNA表达均明显降低,血清SOD,CAT,GSH水平,GSH-Px4,FTH1蛋白表达及SLC7A11 mRNA表达均明显升高,且以高剂量组差异明显(
P
<
0.05,
P
<
0.01)。小鼠一般状态、结肠长度、肠重指数及HE染色结果表明,黄芩汤可在不同程度上改善小鼠临床症状及病理组织学变化。
结论
2
以上结果表明黄芩汤对溃疡性结肠炎小鼠有治疗作用,其作用机制可能与抑制氧化应激及细胞铁死亡相关。
Objective
2
To explore the possible mechanism of Huangqintang in treating ulcerative colitis (UC).
Method
2
The animal model of UC was induced by dextran sodium sulfate (DSS).The experimental animals were divided into control group, model group,Huangqintang low dose (4.55 g·kg
-1
), medium dose (9.1 g·kg
-1
), and high dose(18.2 g·kg
-1
) groups. Intragastric administration was also given in the modeling process for 7 consecutive days. At the end of the 8th day, colon tissues were collected to measure colon length and mass, and calculate the colon mass index. Pathological changes were observed by hematoxylin-eosin (HE) staining. Serum iron content, superoxide dismutase (SOD), glutathione (GSH), catalase (CAT) and myeloperoxidase (MPO) were determined by biochemical assay. Western blot was used to detect the protein expression of glutathione peroxidase 4 (GSH-Px4), long-chain acyl-CoA synthetase 4 (ACSL4) and ferritin heavy chain 1(FTH1). The mRNA expression levels of tumor trotein 53 (P53) and solute carrier family 7 member 11 (SLC7A11) in colon tissues were detected by Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR).
Result
2
The experimental studies showed that compared with normal group, serum MPO and iron content, ACSL4 protein level and relative P53 mRNA expression in the model group significantly increased (
P
<
0.05), while serum SOD, CAT, GSH content, GSH-Px4, FTH1 relative protein expression level and relative SLC7A11 mRNA expression in the model group significantly decreased (
P
<
0.01). Compared with model group, serum MPO and iron content, ACSL4 protein level and relative P53 mRNA expression significantly decreased (
P
<
0.05), while serum SOD, CAT, GSH content, GSH-Px4, FTH1 relative protein expression level and relative SLC7A11 mRNA expression significantly increased (
P
<
0.05) after the intervention of Huangqintang, and the effect was most significant in the high-dose group (
P
<
0.05). The results of general condition, colon length, colon mass index and HE staining showed that Huangqintang could relieve clinical symptoms and histopathological changes in UC mice.
Conclusion
2
These results indicated that Huangqintang had therapeutic effect on ulcerative colitis mice, and its mechanism might be related to inhibiting the oxidative stress and ferroptosis.
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