Effect and mechanism of Timosaponin B-Ⅱ on none alcoholic fatty liver disease in vitro and in vivo

SUN Xiao-jing; SUN Fan-qi; WANG Ya-ning; LI li

doi:10.16025/j.1674-1307.2023.06.012

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Effect and mechanism of Timosaponin B-Ⅱ on none alcoholic fatty liver disease in vitro and in vivo

更新时间：2023-07-18

- Effect and mechanism of Timosaponin B-Ⅱ on none alcoholic fatty liver disease in vitro and in vivo
- Beijing Journal of Traditional Chinese Medicine Vol. 42, Issue 6, Pages: 636-642(2023)
- 作者机构：
  
  1.首都医科大学附属北京友谊医院国际医疗中心，北京 100050
  2.首都医科大学基础医学院，北京 100069
- 作者简介：
- 基金信息：
- DOI：10.16025/j.1674-1307.2023.06.012
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孙晓静，孙凡淇，王亚宁，等.知母皂苷B-Ⅱ对非酒精性脂肪性肝病的治疗作用及机制研究［J］.北京中医药，2023，42（6）：636-642.

SUN Xiao-jing,SUN Fan-qi,WANG Ya-ning,et al.Effect and mechanism of Timosaponin B-Ⅱ on none alcoholic fatty liver disease in vitro and in vivo[J]. Beijing Journal of Traditional Chinese Medicine,2023,42(06):636-642.
孙晓静，孙凡淇，王亚宁，等.知母皂苷B-Ⅱ对非酒精性脂肪性肝病的治疗作用及机制研究［J］.北京中医药，2023，42（6）：636-642. DOI： 10.16025/j.1674-1307.2023.06.012.

SUN Xiao-jing,SUN Fan-qi,WANG Ya-ning,et al.Effect and mechanism of Timosaponin B-Ⅱ on none alcoholic fatty liver disease in vitro and in vivo[J]. Beijing Journal of Traditional Chinese Medicine,2023,42(06):636-642. DOI： 10.16025/j.1674-1307.2023.06.012.

摘要

目的,2,用体内外实验探讨知母皂苷B-Ⅱ（TB-Ⅱ）对非酒精性脂肪性肝病（NAFLD）的治疗作用及可能的作用机制。,方法,2,体外棕榈酸（100 μmol/L）处理人肝癌细胞（HepG2），同时加入不同浓度TB-Ⅱ干预24 h，检测细胞TG水平变化。将C75BL/6J小鼠随机分为正常饮食（NCD）组、高脂饮食（HFD）组、TB-Ⅱ低剂量组（HFD+LTB-Ⅱ）、TB-Ⅱ高剂量组（HFD+HTB-Ⅱ），NCD组喂以普通饲料，其余组均以高脂饲料喂养16周建立NAFLD动物模型，TB-Ⅱ低、高剂量组每天分别予50、100 mg/kgTB-Ⅱ灌胃；监测小鼠体质量、脂肪重量、生化指标及肝脏病理评估肝损伤程度，并通过实时定量PCR（RT-PCR）方法检测肝组织脂代谢相关基因变化。,结果,2,TB-Ⅱ处理后HepG2细胞TG水平下降；TB-Ⅱ治疗可使HFD小鼠体质量下降，血清转氨酶、TC、TG、LDL-C及肝组织TC和TG水平也显著下降，同时肝脏病理明显改善。其中脂质合成相关基因SREBP-1c、FAS及ACC1表达明显下降，并伴随脂肪酸β氧化关键基因CPT1、PPARα表达上调。,结论,2,TB-Ⅱ可通过调控肝细胞脂质合成及脂肪酸氧化延缓高脂诱导的NAFLD进程。

Abstract

Objective,2,To explore the effects of Timosaponin B-Ⅱ （TB-Ⅱ） on non alcoholic fatty liver disease （NAFLD） and its mechanisms.,Methods,2,In vitro， HepG2 cells were stimulated with 100 μmol/L palmitate， without or with TB-Ⅱ and the changes of TG level were detected.In vivo， C57BL/6J mice were fed with normal diet group （NCD）， high-fat diet group （HFD）， TB-Ⅱ low dose group （HFD+LTB-Ⅱ） and TB-Ⅱ high dose group （HFD+HTB-Ⅱ）.The NCD group was fed with ordinary feed， the other groups were fed with high-fat feed for 16 weeks to establish NASH animal models， and the low and high-dose groups of TB-Ⅱ were gavaged with 50 mg/kg and 100 mg/kg respectively every day.The body weight， fat weight， biochemical indexes and liver pathology of mice were monitored to evaluate the degree of liver injury， and the changes of genes related to lipid metabolism in liver tissue were detected by real-time quantitative PCR（RT-PCR）.,Results,2,TG level of HepG2 cellsTB-Ⅱ reduced after TB-Ⅱ treatment， TB-Ⅱ treatment can reduce the body weight of HFD mice，the levels of serum transaminase， TC， TG， LDL-C， TC and TG in liver tissue are also significantly decreased， and the liver pathology is obviously improved. but also downregulated the expression of lipogenesis-related genes （SREBP-1c， FAS and ACC）， accompanied by the up-regulation of the expression of key genes CPT1 and PPARα in fatty acid β oxidation.,Conclusion,2,TB-Ⅱ could delay the process of NAFLD induced by high fat by regulating lipid synthesis and fatty acid oxidation in hepatocytes.

关键词

非酒精性脂肪性肝病知母皂苷B-Ⅱ脂质代谢肝癌细胞小鼠

Keywords

NAFLDTimosaponin B-Ⅱlipid metabolismmice

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