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1.湖南中医药大学 第一附属医院,长沙 410007
2.国医大师熊继柏教授传承工作室,长沙 410007
吴东升,硕士,从事肠道慢性疾病合并肛周病变的中医药研究,Tel:0731-89669129,E-mail:987909401@qq.com
* 曹晖,硕士,主任医师,从事肠道慢性疾病合并肛周病变的研究,Tel:0731-89669129,E-mail:Caohui001818@sina.com
收稿日期:2021-03-29,
网络出版日期:2021-06-16,
纸质出版日期:2021-08-20
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吴东升,曹晖,张彧等.芍药汤通过抑制HIF-1α调节Th17/Treg平衡治疗溃疡性结肠炎[J].中国实验方剂学杂志,2021,27(16):9-15.
WU Dong-sheng,CAO Hui,ZHANG Yu,et al.Shaoyaotang Treats Ulcerative Colitis by Inhibiting HIF-1α and Regulating Th17/Treg Balance[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(16):9-15.
吴东升,曹晖,张彧等.芍药汤通过抑制HIF-1α调节Th17/Treg平衡治疗溃疡性结肠炎[J].中国实验方剂学杂志,2021,27(16):9-15. DOI: 10.13422/j.cnki.syfjx.20211503.
WU Dong-sheng,CAO Hui,ZHANG Yu,et al.Shaoyaotang Treats Ulcerative Colitis by Inhibiting HIF-1α and Regulating Th17/Treg Balance[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(16):9-15. DOI: 10.13422/j.cnki.syfjx.20211503.
目的
2
探讨缺氧诱导因子-1
α
(HIF-1
α
)在溃疡性结肠炎辅助性T细胞17(Th17)/调节性T细胞(Treg)平衡中的作用及芍药汤的干预机制。
方法
2
将48只SD大鼠随机分为正常组,模型组,美沙拉嗪组(0.42 g·kg
-1
),芍药汤组(11.1 g·kg
-1
),抑制剂组(2-甲氧基雌二醇,0.015 g·kg
-1
),
芍药汤+抑制剂组,采用2,4,6-三硝基苯磺酸(TNBS)诱导溃疡性结肠炎模型,各组分别对应给予生理盐水,美沙拉嗪,芍药汤,抑制剂及芍药汤+抑制剂治疗7 d,观察各组大鼠一般情况和疾病活动指数,采用苏木素-伊红(HE)染色观察结肠组织病理学改变,酶联免疫吸附测定(ELISA)法检测血清中白细胞介素-10(IL-10),IL-17,IL-23水平;蛋白免疫印迹法(Western blot)检测结肠组织叉头状/翼状螺旋转录因子P3(FoxP3),维甲酸相关孤儿受体(ROR
γ
t),HIF-1
α
蛋白表达水平。
结果
2
与正常组比较,模型组大鼠疾病活动指数(DAI)评分,肠黏膜病理学评分显著升高(
P
<
0.01),血清中的IL-10水平显著降低(
P
<
0.01),IL-17和IL-23显著升高(
P
<
0.01),结肠ROR
γ
t及HIF-1
α
蛋白水平显著升高(
P
<
0.01),FoxP3蛋白表达显著降低(
P
<
0.01);与模型组比较,芍药汤组DAI评分,肠黏膜病理学评分降低(
P
<
0.05,
P
<
0.01),血清中IL-10水平升高(
P
<
0.01),IL-17,IL-23降低(
P
<
0.01),结肠ROR
γ
t及HIF-1
α
蛋白水平降低(
P
<
0.01),FoxP3蛋白表达升高(
P
<
0.01);与抑制剂组比较,芍药汤组及芍药汤+抑制剂组ROR
γ
t,FoxP3及HIF-1
α
蛋白表达差异有统计学意义(
P
<
0.05,
P
<
0.01)。
结论
2
芍药汤可以有效治疗溃疡性结肠炎,其作用机制可能与抑制HIF-1
α
来调节Treg/Th17的重新平衡相关。
Objective
2
To explore the effect of hypoxia-inducible factor (HIF)-1
α
on T helper 17 (Th17)/regulatory T cell (Treg) balance in ulcerative colitis and the intervention mechanism of Shaoyaotang.
Method
2
Forty-eight SD rats were randomly divided into normal group (normal saline), model group, mesalazine group (0.42 g·kg
-1
), Shaoyaotang group (11.1 g·kg
-1
), inhibitor group [2-methoxyestradiol (2ME
2
), 0.015 g·kg
-1
], and Shaoyaotang+inhibitor group. The ulcerative colitis model was induced by 2,4,6-trinitrobenzene sulfonic acid (TNBS). The rats in all groups received corresponding treatments for 7 d, and the general condition and disease activity index (DAI) were observed. Hematoxylin-eosin (HE) staining was used to observe histopathological changes of the colon. Enzyme-linked immunosorbent assay (ELISA) was employed to detect serum levels of interleukin (IL)-10, IL-17, and IL-23 in rats. Western blot was used to detect the expression levels of forkhead box protein 3 (FoxP3), retinoic acid-related orphan receptor
γ
t (ROR
γ
t), and HIF-1
α
proteins in the colon tissue.
Result
2
Compared with the normal group, the model group showed elevated disease activity index (DAI) score and pathological score for intestinal mucosa (
P
<
0.01), reduced serum IL-10 level (
P
<
0.01), up-regulated IL-17 and IL-23 levels (
P
<
0.01), increased ROR
γ
t and HIF-1
α
expression (
P
<
0.01), and decreased FoxP3 protein expression (
P
<
0.01). Compared with the model group, the Shaoyaotang group displayed diminished DAI score and pathological score for intestinal mucosa (
P
<
0.05,
P
<
0.01), increased serum IL-10 level (
P
<
0.01), decreased IL-17 and IL-23 levels (
P
<
0.01), dwindled protein levels of ROR
γ
t and HIF-1
α
(
P
<
0.01), and up-regulated expression of FoxP3 (
P
<
0.01). Compared with the inhibitor group, the Shaoyaotang group and the Shaoyaotang+inhibitor group exhibited significant differences in the expression of ROR
γ
t, FoxP3, and HIF-1
α
proteins (
P
<
0.05,
P
<
0.01).
Conclusion
2
Shaoyaotang could effectively treat ulcerative colitis, and the underlying mechanism of action might be related to the regulation of Th17/Treg rebalance by inhibiting HIF-1
α
.
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