实用肝脏病杂志 ›› 2020, Vol. 23 ›› Issue (4): 488-491.doi: 10.3969/j.issn.1672-5069.2020.04.009

• 实验性肝炎 • 上一篇    下一篇

余甘子提取物对非酒精性脂肪性肝病大鼠外周血Treg细胞及肝组织LXRα/FAS通路表达的影响*

胡亦懿, 翟英姬, 梅迪华, 张志侨, 罗晓亮, 黄燕峰, 杜国平   

  1. 528308 广东省佛山市 南方医科大学顺德医院消化内科(胡亦懿,翟英姬,梅迪华,罗晓亮,杜国平);感染性疾病科(张志侨);VIP医学中心(胡亦懿,黄燕峰)
  • 收稿日期:2020-02-09 发布日期:2020-07-15
  • 通讯作者: 杜国平,E-mail:dgpbiology@163.com
  • 作者简介:胡亦懿,女,38岁,医学硕士,副主任医师。主要从事非酒精性脂肪性肝病的诊治研究。E-mail:3266502715@qq.com
  • 基金资助:
    *广东省医学研究基金资助项目(编号:A2016450/A2013695);佛山市医学杰出青年基金资助项目(编号:600011)

Effects of extractum Phyllanthus emblica on hepatic LXRα/ FAS pathway expression in rats with nonalcoholic fatty liver disease

Hu Yiyi, Zhai Yingji, Mei Dihua, et al   

  1. Department of Gastroenterology, Shunde Hospital, Southern Medical University, Foshan 528308, Guangdong Province, China
  • Received:2020-02-09 Published:2020-07-15

摘要: 目的 探讨余甘子提取物对非酒精性脂肪性肝病(NAFLD)大鼠外周血Treg细胞及肝组织LXRα/FAS通路表达的影响。方法 将48只SD大鼠随机分对照组、模型组、多烯磷脂酰胆碱及小剂量、中剂量和大剂量余甘子处理组,在造模成功后,给予对照组生理盐水灌胃,给予模型组多烯磷脂酰胆碱处理,另给予不同剂量的余甘子灌胃处理,连续给药6周。采用ELISA法检测血清TNF-α、IL-17和IL-10水平,使用流式细胞术检测血CD4+IL-17+和CD4+CD25+Treg细胞百分比,采用WB法检测肝组织LXRα和FAS蛋白表达。结果 与模型组比,大剂量余甘子提取物处理组肝组织病理学损伤显著改善,血清ALT、AST、TC、TG水平显著降低(P<0.05);血清TNF-α和IL-17水平显著降低,分别为(34.7±0.9)pg/ml和(3.2±0.2)pg/mL,而IL-10水平显著升高,为(4.8±0.2)pg/mL(P<0.05);大剂量余甘子处理组CD4+IL-17+百分比为(1.1±0.6)%,显著低于模型组[(1.9±0.4)%,P<0.05],CD4+CD25+Treg百分比为(1.5±0.6)%,显著高于模型组[(0.9±0.2)%,P<0.05];小、中、大剂量余甘子提取物处理组肝组织LXRα和FAS蛋白表达显著减弱[分别为(1.8±0.1)和(2.0±0.2),P<0.05]。结论 余甘子提取物可改善NAFLD大鼠肝组织病理学损伤,可能与其对炎性细胞因子、Th17/Treg细胞和LXRα/FAS通路因子的表达产生了某种影响有关。

关键词: 非酒精性脂肪性肝病, 余甘子提取物, 细胞因子, CD4+IL-17+细胞, CD4+CD25+Treg细胞, LXRα/FAS通路, 大鼠

Abstract: Objective To investigate the effects of Phyllanthus emblica extract on hepatic LXRα/FAS pathway protein expression in rats with non-alcoholic fatty liver disease (NAFLD). Methods A total of 48 SD rats were randomly divided into control group, model group, polyene phosphatidylcholine group, low-dose, moderate-dose and high-dose Phyllanthus emblica-intervened groups. After the successful establishment of the model, except for in the control group and in the model group, the rats were given intragastric administration of agents for 6 weeks. The histopathological changes of liver were examined, serum TNF-α, IL-17 and IL-10 levels were detected by ELISA, and the percentages of peripheral blood CD4+IL-17+ and CD4+CD25+Treg cells were detected by flow cytometry, and the expression of LXRα and FAS in liver tissues were detected by WB. Results Compared with in the model group, the administration of high dose of Phyllanthus emblica extract could improve the pathological changes of liver tissues, serum ALT, AST, TC and TG levels were significantly decreased, serum TNF-α and IL-17 levels were (34.7±0.9) pg/ml and (3.2±0.2) pg/mL, significantly decreased, while serum IL-10 level was significantly increased, e.g. (4.8±0.2 pg/mL,P<0.05); the percentage of CD4+IL-17+ cells in the high-dose of Phyllanthus emblica intervention was (1.1±0.6)%, significantly lower than [(1.9±0.4)%, P<0.05]in the model group, the percentage of CD4+CD25+Treg was (1.5±0.6)%, significantly higher than in the model group [(0.9±0.2)%, P<0.05]; the hepatic expression of LXRα and FAS in the small, moderate and high dose ofPhyllanthus emblica extract-intervened groups were significantly decreased [(1.8±0.1) and (2.0±0.2),P<0.05]compared to those in the model. Conclusion The extract of Phyllanthus emblica could improve the histopathological changes of liver tissues of rats with NAFLD, which might be related to the inhibition of inflammatory cytokines and hepatic LXRα/ FAS expression as well as modulation of Th17/Treg cells.

Key words: Nonalcoholic fatty liver disease, Extractum Phyllanthus emblica, CD4+IL-17+ cells, CD4+CD25+Treg cells, LXRα/FAS, Rats