三叶青提取物抗ANIT所致小鼠肝损伤作用的研究
2018-12-06李萍吉薇薇彭昕
李萍 吉薇薇 彭昕
[摘要] 目的 研究三叶青提取物对α-异硫氰酸萘酯(ANIT)所致肝损伤小鼠的保护作用。 方法 2017年1月~2018年2月选择60只小鼠并随机分为6组,分别为对照组、联苯双酯阳性药物组、模型组、三叶青提取物低、中、高剂量组[(1.0、2.0、4.0)g/kg]。采用灌胃ANIT的方式复制急性黄疸型肝炎模型,造模48 h后测其血清中ALT、AST、TBA、TBIL、TNF-α的含量;检测肝组织匀浆中SOD、MDA、GSH-Px的水平。 结果 三叶青提取物各剂量组均可显著降低TBIL和TNF-α水平(P<0.05),中、高剂量组可以降低血清中ALT、AST、TBA、TBIL、TNF-α含量(P<0.05),各劑量组均显著降低MDA含量,中、高剂量组可显著提高SOD活性(P<0.05),而GSH-Px水平无显著变化。结论 三叶青提取物对ANIT所致小鼠肝损伤有一定的保护作用,其保护作用可能与减轻炎症因子产生、促进总胆红素的代谢、降低脂质过氧化程度有关。
[关键词] 三叶青;ANIT;肝损伤;抗氧化
[中图分类号] R969.1 [文献标识码] A [文章编号] 1673-9701(2018)30-0032-04
[Abstract] Objective To study the protective effect of trifolium extract on liver injury induced by α-isothiocyanatoacetate (ANIT) in mice. Methods 60 mice from January 2017 to February 2018 were randomly divided into 6 groups, including control group, bifendate positive drugs group, model group, trifolium extract low, medium and high dose groups[(1.0, 2.0, 4.0) g/kg]. The model of acute jaundice hepatitis was reproduced by intragastric administration of ANIT. The levels of ALT, AST, TBA, TBIL, and TNF-α in serum were determined 48 h after modeling. The levels of SOD, MDA, and GSH-Px in liver homogenate were measured. Results The levels of TBIL and TNF-α were significantly decreased in each dose group(P<0.05). The levels of ALT, AST, TBA, TBIL and TNF-α in serum were decreased in medium and high dose groups(P<0.05). Each dose group significantly decreased the MDA content. The medium and high dose group could significantly increase SOD activity(P<0.05),while GSH-Px levels did not change significantly. Conclusion Trifolium extract has a protective effect on liver injury induced by ANIT in mice. Its protective effect may be related to the reduction of inflammatory factors, promotion of the total bilirubin metabolism and reduction of the lipid peroxidation degree.
[Key words] Trifolium; ANIT; Liver injury; Antioxidant
急性黄疸型肝炎是各种诱因导致肝细胞肿胀、变性,从而引起胆红素的排泄障碍,进而形成黄疸的肝脏损伤疾病,除了皮肤黄染、低热、食欲不振、尿黄等表征外,还伴有总胆红素、多种转氨酶等临床生化指标的升高[1]。中医对黄疸型肝炎的治疗具有悠久的历史,多以清热解毒、利湿退黄、活血化瘀、疏利肝胆论治[2],能够一定程度地缓解患者细胆管的淤胆和胆栓的形成,从而清除患者体内的集聚胆汁[3]。
三叶青是我国特有珍稀植物三叶崖爬藤(Tetrastigma hemsleyanum Diels et Gilg)的块根,具有清热解毒、防癌护肝等多种功效,常用于高热惊厥、肝炎、风湿、肺炎、痈疔疮疖等症[4]。有研究报道,三叶青具有良好的保肝降酶及抗肝纤维化作用[5],三叶青多糖对CCl4所致的急性肝损伤具有量效依赖的阻抗作用[6],前期本课题组的研究表明,三叶青提取物能诱导人肝内胆管癌HCCC-9810细胞凋亡[7]。本文利用α-异硫氰酸萘酯(ANIT)所致小鼠肝损伤模型,探讨其对急性黄疸型肝炎的潜在功效,为其临床应用提供药理学依据。……
