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黄柏酮对单侧输尿管梗阻模型小鼠肾间质纤维化及铁死亡的影响                                                                      Δ



                                   2
          邱 莎 ,杨 丽 ,谭睿陟 ,刘 建 (1.西南医科大学附属医院肾病内科/四川省肾脏疾病临床医学研究中
                                           1, 3 #
                           1
                 1*
          心,四川 泸州 646000;2.西南医科大学附属中医医院中西医结合研究中心,四川 泸州 646000;3.西南医科
          大学附属中医医院肾病内科,四川 泸州 646000)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)05-0554-06
          DOI  10.6039/j.issn.1001-0408.2023.05.08

          摘   要  目的  研究黄柏酮对单侧输尿管梗阻(UUO)模型小鼠肾间质纤维化的改善作用,并基于核转录因子红系 2 相关因子 2
         (Nrf2)/谷胱甘肽过氧化物酶4(GPx4)信号通路介导的铁死亡探讨其作用机制。方法  将30只小鼠随机分为假手术组、模型组、厄
          贝沙坦组(阳性对照,20 mg/kg)和黄柏酮低、高剂量组(10、40 mg/kg),每组6只。除假手术组外,其余各组小鼠均通过结扎单侧输
          尿管建立UUO模型。术后,给药组小鼠腹腔注射相应药物,假手术组、模型组小鼠腹腔注射等体积生理盐水,每天1次,连续7 d。
          检测小鼠血清中肌酐(Cr)、血尿素氮(BUN)水平,丙二醛(MDA)含量,总超氧化物歧化酶(T-SOD)活力和肾脏组织中Fe 浓度;苏
                                                                                                      2+
          木精-伊红(HE)染色和Masson染色观察小鼠肾脏组织形态和纤维化情况;免疫组化法检测小鼠肾脏组织中纤连蛋白(Fn)、α-平滑
          肌肌动蛋白(α-SMA)、GPx4、Nrf2的表达,Western blot法和实时定量聚合酶链反应(RT-qPCR)检测小鼠肾脏组织中Fn、α-SMA、
          Nrf2、GPx4、溶质载体家族7成员11(SLC7A11)蛋白及mRNA的表达水平。结果  与假手术组比较,模型组小鼠血清中Cr、BUN水
          平,MDA含量,肾脏组织中Fe 浓度以及Fn、α-SMA蛋白和mRNA的表达水平均显著升高(P<0.05);血清中T-SOD活力,肾脏组
                                 2+
          织中Nrf2、GPx4、SLC7A11蛋白和mRNA的表达水平均显著降低(P<0.05);肾脏组织中肾小管扩张,胶原沉积明显,纤维条索较
          粗且着色较深,肾间质炎症细胞浸润明显。经黄柏酮干预后,小鼠血清或肾脏组织中上述指标(黄柏酮低剂量组SLC7A11 mRNA
          除外)水平均显著逆转(P<0.05),肾脏组织病理损伤、胶原沉积均有所减轻。结论  黄柏酮可改善 UUO 模型小鼠的肾间质纤维
          化,具体作用机制可能与激活Nrf2/GPx4信号通路、抑制铁死亡有关。
          关键词  黄柏酮;肾间质纤维化;单侧输尿管梗阻;Nrf2/GPx4信号通路;铁死亡

          Effects  of  obacunone  on  renal  interstitial  fibrosis  and  ferroptosis  in  unilateral  ureteral  obstruction  model
          mice
          QIU Sha ,YANG Li ,TAN Ruizhi ,LIU Jian (1.  Dept.  of  Nephrology,  the  Affiliated  Hospital  of  Southwest
                             1
                                                   1, 3
                  1
                                         2
          Medical  University/Nephropathy  Clinical  Medical  Research  Center  of  Sichuan  Province,  Sichuan  Luzhou
          646000,  China;2.  Research  Center  of  Traditional  Chinese  Medicine  and  Western  Medicine  Integration,the
          Affiliated  Traditional  Chinese  Medicine  Hospital  of  Southwest  Medical  University,  Sichuan  Luzhou  646000,
          China;3.  Dept.  of  Nephrology,  the  Affiliated  Chinese  Traditional  Medicine  Hospital  of  Southwest  Medical
          University, Sichuan Luzhou 646000, China)
          ABSTRACT    OBJECTVE To study the improvement effects of obacunone on renal interstitial fibrosis (RIF) in unilateral ureteral

          obstruction (UUO)  model  mice,  and  to  investigate  its  mechanism  based  on  ferroptosis  mediated  by  nuclear  factor  erythroid  2-
          related  factor  2(Nrf2)/glutathione  peroxidase  4 (GPx4)  signaling  pathway.  METHODS  Thirty  mice  were  randomly  divided  into
          sham  operation  group,  model  group,  irbesartan  group (positive  control,  20  mg/kg),  obacunone  low-dose  and  high-dose  groups
         (10,  40  mg/kg),  with  6  mice  in  each  group.  Except  for  sham  operation  group,  UUO  model  was  established  by  ligation  of
          unilateral  ureter  in  other  groups. After  operation,  administration  groups  were  given  intraperitoneal  injection  of  relevant  medicine,
          and  sham  operation  group  and  model  group  were  given  intraperitoneal  injection  of  constant  volume  of  normal  saline,  once  a  day,
          for 7 consecutive days. The levels of creatinine (Cr) and blood urea nitrogen (BUN), the content of malondialdehyde (MDA) and
          the  activities  of  total  superoxide  dismutase (T-SOD)  in  serum  and  the  concentration  of  Fe   in  renal  tissue  were  all  detected.  HE
                                                                                2+
                                                              staining  and  Masson  staining  were  performed  to  observe  the
              Δ 基金项目 四川省省级科技计划项目(No.2022YFHO118);西南
                                                              morphology  and  the  fibrosis  of  renal  tissues.  Immunohisto-
          医科大学-西南医科大学附属中医医院联合项目(No. 西南医大校
                                                              chemical  staining  was  used  to  determine  expressions  of  the
          〔2018〕6号)
                                                              fibronectin (Fn),  α -smooth  muscle  actin (α -SMA),  GPx4
             * 第一作者 硕 士 研 究 生 。 研 究 方 向 :肾 脏 病 学 。 E-mail:
          964083717@qq.com                                    and  Nrf2  in  renal  tissue.  Western  blot  and  real-time
              # 通信作者 主任医师,教授,硕士生导师。研究方向:肾脏病学。                 quantitative  polymerase  chain  reaction (RT-qPCR)  were  used
          E-mail:834300205@qq.com                             to  detect  the  protein  and  mRNA  levels  of  Fn,  α-SMA,  Nrf2,


          · 554 ·    China Pharmacy  2023 Vol. 34  No. 5                               中国药房  2023年第34卷第5期
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