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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


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          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
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