基础医学与临床 ›› 2021, Vol. 41 ›› Issue (1): 72-76.

• 研究论文 • 上一篇    下一篇

α-硫辛酸对自身免疫性甲状腺炎小鼠炎性反应的抑制作用

玛依努·玉苏甫, 衣巴地古丽·库吐鲁克, 哈尼克孜·阿不都艾尼*   

  1. 新疆维吾尔自治区人民医院 内分泌科, 新疆 乌鲁木齐 830000
  • 收稿日期:2019-11-22 修回日期:2020-09-08 出版日期:2021-01-05 发布日期:2020-12-30
  • 通讯作者: *552483611@qq.com
  • 基金资助:
    新疆维吾尔自治区自然科学基金(2017D01C106)

Inhibition of inflammatory response by α-lipoic acid in autoimmune thyroiditis mice

Mayinu YUSUFU, Yibadiguli KUTURUKE, Hanikezi ABUDUAINI*   

  1. Department of Endocrinology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830000, China
  • Received:2019-11-22 Revised:2020-09-08 Online:2021-01-05 Published:2020-12-30
  • Contact: *552483611@qq.com

摘要: 目的 探讨α-硫辛酸抑制自身免疫性甲状腺炎(AIT)小鼠炎性反应及对淋巴细胞亚群的影响。方法 将80只NOD.H-2h 4雌鼠随机分为对照组,给予无菌双蒸水灌胃;AIT 组给予50 mg/L碘化钠无菌双蒸水灌胃;低及高剂量α-硫辛酸干预组每天腹腔注射0.1和0.4 g/L α-硫辛酸。每组20只,均持续干预8周。干预8周后,用HE染色观察淋巴细胞浸润;采用流式细胞仪检测Th17、Treg、CD4+、CD8+ T细胞及CD4+/CD8+水平;采用Western blot测定p38MAPK、NF-κB蛋白水平。结果 AIT组小鼠甲状腺炎性反应发生率高达85%。AIT+低/高剂量α-硫辛酸组小鼠甲状腺炎发生率、甲状腺炎性反应程度评分以及Th17 细胞比例显著低于AIT组(P<0.05);Treg、CD4+、CD8+以及CD4+ /CD8+细胞比例显著高于AIT 组(P<0.05)。AIT+低/高剂量α-硫辛酸组的蛋白相对表达水平较AIT组明显降低(P<0.05)。结论 α-硫辛酸可以降低AIT小鼠炎性反应因子的表达,改善淋巴细胞亚群的比例,从而抑制炎性反应和改善AIT症状。

关键词: α-硫辛酸, 自身免疫性甲状腺炎, p38促分裂原活化蛋白激酶(p38MAPK), 核因子-κB通路, T淋巴细胞亚群

Abstract: Objective To investigate the inhibitory effect of α-lipoic acid on inflammation in autoimmune thyroiditis (AIT) mice and its effect on lymphocyte subsets. Methods Eighty NOD.H-2h 4 female rats were randomly divided into a control group and the AIT group which was given 50 mg/L sodium iodide orally; Low- and high-dose α-lipoic acid intervention group was injected intraperitoneally with 0.1 and 0.4 g/L α-lipoic acid daily. Twenty animals in each group were continued to be intervened for 8 weeks. After 8 weeks of intervention, HE staining was used to observe lymphocyte infiltration; flow cytometry was used to detect Th17, Treg, CD4+, CD8+ T cells and CD4+/CD8+ levels; and Western blot method was used to determine p38MAPK and NF-κB protein level. Results The incidence of thyroid inflammation in AIT group was as high as 85%. The incidence of thyroiditis, the degree of thyroid inflammation, and the proportion of Th17 cells in the AIT+low/high-dose alpha-lipoic acid group were significantly lower than those in the AIT group (P<0.05), and the proportion of Treg, CD4+, CD8+, and CD4+/CD8+ cells were significant higher than that in the AIT group (P<0.05).The AIT+low/high-dose α-lipoic acid group had significantly lower relative protein expression than those in the AIT group (P<0.05). Conclusions α-lipoic acid can reduce the expression of inflammatory cytokines in autoimmune thyroid mice, improve the proportion of lymphocyte subsets, thereby suppressing the inflammatory response and improving the symptoms of AIT.

Key words: α-lipoic acid, autoimmune thyroiditis, p38 mitogen-activated protein kinase(p38MAPK), NF-κB pathway, T lymphocyte subset

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