Page 38 - 《中国药房》2023年23期
P. 38
异甘草素调控肠道菌群和肠屏障功能改善小鼠非酒精性脂肪性
肝病的作用机制
Δ
2
2
1*
3, 4
曾海燕 ,简丽娜 ,吴辉星 ,周本杰 ,乡世健 3, 4 # [1. 中国科学院大学深圳医院(光明)检验科,广东 深圳
518106;2.广东医科大学药学院,广东 东莞 523808;3.中山大学附属第七医院药学部,广东 深圳 518107;
4.深圳市中药活性物质筛选与转化重点实验室,广东 深圳 518107]
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)23-2848-07
DOI 10.6039/j.issn.1001-0408.2023.23.06
摘 要 目的 研究异甘草素对高脂饮食诱导的非酒精性脂肪性肝病(NAFLD)模型小鼠肠道菌群和肠屏障功能的调控作用,阐
明其改善 NAFLD 的机制。方法 将 30 只雄性 C57BL/6J 小鼠随机分为正常组(超纯水)、模型组(超纯水)和异甘草素组(100
mg/kg),每组10只。模型组和异甘草素组喂食高脂饲料19周建立NAFLD模型;造模同时,各组小鼠灌胃相应药物/超纯水。记录
各组小鼠体重变化,计算小鼠肝指数、白色脂肪指数和棕色脂肪指数;观察小鼠肝脏组织和结肠组织的病理变化以及肝脏脂质堆
积情况;检测小鼠血清或肝脏中总胆固醇(TC)、甘油三酯(TG)、天冬氨酸转氨酶(AST)和丙氨酸转氨酶(ALT)水平;检测小鼠血
清中白细胞介素6(IL-6)、IL-1β和肿瘤坏死因子α(TNF-α)水平和肝脏组织中IL-6、IL-1β、TNF-α mRNA表达水平;取小鼠粪便进
行 16S rRNA 测序,考察异甘草素对模型小鼠肠道菌群结构的影响;检测小鼠结肠组织中肠黏膜屏障功能相关蛋白[闭合蛋白 4
(Claudin-4)、闭合蛋白(Occludin)、紧密连接蛋白1(ZO-1)]的表达水平。结果 与模型组比较,异甘草素组小鼠体重、肝指数,肝脏
和血清中TC水平以及血清中AST、ALT水平,血清中IL-6、IL-1β和TNF-α水平,肝脏组织中TNF-α mRNA表达水平均显著降低;
棕色脂肪指数显著升高;肝脏组织炎症与损伤显著改善,NAFLD活动评分和脂质染色面积占比均显著减少(P<0.05)。异甘草素
可显著上调小鼠肠道益生菌(norank_f_Muribaculaceae、Odoribacter、Ruminiclostridium 等)的相对丰度以及肠黏膜屏障功能相关
蛋白表达水平,显著下调有害菌(Desulfovibrio、norank_f_Lachnospiraceae、unclassified_p_Firmicutes 等)的相对丰度,修复肠黏膜
屏障。结论 异甘草素可显著延缓NAFLD的进展,其作用机制可能与调节肠道菌群、改善肠屏障功能有关。
关键词 异甘草素;肠道菌群;肠黏膜屏障;非酒精性脂肪性肝病
The mechanism of isoliquiritigenin on ameliorating non-alcoholic fatty liver disease in mice by regulating
gut microbiota and repairing gut barrier function
ZENG Haiyan ,JIAN Lina ,WU Huixing ,ZHOU Benjie ,XIANG Shijian [1. Dept. of Clinical Laboratory,
3, 4
1
2
3, 4
2
Shenzhen (Guangming) Hospital of University of Chinese Academy of Sciences, Guangdong Shenzhen 518106,
China;2. School of Pharmacy, Guangdong Medical University, Guangdong Dongguan 523808, China;3. Dept.
of Pharmacy, the Seventh Affiliated Hospital of Sun Yat-sen University, Guangdong Shenzhen 518107, China;
4. Shenzhen Key Laboratory of Chinese Medicine Active Substance Screening and Translational Research,
Guangdong Shenzhen 518107, China]
ABSTRACT OBJECTIVE To study the effects of isoliquiritigenin (ISL) regulating gut microbiota and repairing gut barrier
function in model mice with non-alcoholic fatty liver disease (NAFLD), and to clarify its mechanism for improving NAFLD.
METHODS Thirty male C57BL/6J mice were randomly divided into the normal (ultrapure water), model group (ultrapure water),
ISL group (100 mg/kg), with 10 mice in each group. Model group and ISL group were fed with high-fat diet for 19 weeks to
establish NAFLD model; at the same time, the mice were
Δ 基金项目 国家自然科学基金项目(No.82003988);深圳市自然 given relevant medicine/ultrapure water intragastrically. The
科学基金面上项目(No.JCYJ20190809143219112,No.JCYJ20220530- changes of body weight in mice were recorded, and liver
144611026);深圳市重点实验室组建项目(No.ZDSYS2022060610- index, white fat index and brown fat index were calculated.
0801003);深圳市光明区卫生系统科研项目(No.2020R01127,No. The pathological changes of liver tissue and colon tissue as
2021R01130) well as lipid accumulation were observed in mice. The levels
*第一作者 主管技师。研究方向:肠道菌群与疾病发生机制。
of total cholesterol (TC), triglyceride (TG), aspartate
E-mail:zenghaiyan0709@163.com
# 通信作者 副主任药师,博士。研究方向:中药调控肠道菌群。 aminotransferase (AST) and alanine aminotransferase (ALT)
E-mail:xiangshj3@mail.sysu.edu.cn in serum or liver were measured; the serum levels of
· 2848 · China Pharmacy 2023 Vol. 34 No. 23 中国药房 2023年第34卷第23期