Page 57 - 《中国药房》2023年7期
P. 57

大黄酸对免疫球蛋白A肾病的改善作用及机制研究
                                                                                         Δ


                          1 #
                 1*
          陈杉杉 ,彭胜男 ,洪 婷(1.江西中医药大学中医学院,南昌 330004;2.江西中医药大学临床医学院,南昌
                                   2
          330004)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)07-0819-07
          DOI  10.6039/j.issn.1001-0408.2023.07.10

          摘  要  目的  基于信号转导与转录激活因子3(STAT3)信号通路,研究大黄酸改善免疫球蛋白A肾病(IgAN)模型大鼠的作用及
          机制。方法  将大鼠随机分为正常对照组、IgAN模型组和大黄酸治疗组(100 mg/kg),每组10只。IgAN模型组和大黄酸治疗组采
          用牛血清白蛋白+脂多糖+四氯化碳联合法复制IgAN模型。造模第7周开始,大黄酸治疗组大鼠灌胃相应药物,正常对照组和模
          型组大鼠灌胃等量生理盐水,连续 4 周。末次给药后,检测大鼠尿红细胞数、24 h 尿蛋白(24 h-UTP)以及血清中免疫球蛋白 A
         (IgA)、小肠黏液中分泌型IgA(sIgA)的水平;观察大鼠肾皮质和小肠黏膜Peyer结的病理形态学变化以及肾皮质中IgA沉积情况;
          检测大鼠小肠黏膜Peyer结中白细胞介素17(IL-17)、IL-6和转化生长因子β(TGF-β)的表达水平;检测Peyer结中STAT3和维甲酸
          受体相关孤儿受体γt(RORγt)mRNA的表达水平;检测Peyer结中磷酸化STAT3(p-STAT3)和RORγt蛋白的表达水平。结果  与正
          常对照组比较,IgAN模型组大鼠尿红细胞数、24 h-UTP以及血清中IgA、小肠黏液中sIgA水平均显著升高(P<0.01);肾皮质中肾
          小体增大,肾小囊扩张,球内系膜增生、纤维化明显;小肠黏膜 Peyer 结体积和生发中心增大;肾皮质中 IgA 沉积明显;小肠黏膜
          Peyer 结中 IL-17、IL-6、TGF-β、STAT3 mRNA、RORγt mRNA 以及 p-STAT3、RORγt 蛋白的表达水平均显著升高(P<0.01)。与
          IgAN模型组比较,大黄酸治疗组大鼠上述指标水平均显著降低(P<0.01),肾皮质病理损伤有所改善,小肠黏膜Peyer结体积和生
          发中心减小,肾皮质中IgA沉积减弱。结论  大黄酸对IgAN模型大鼠具有较好的改善作用,其作用机制可能与抑制STAT3信号通
          路活性、调控小肠黏膜Peyer结内的免疫功能有关。
          关键词  大黄酸;免疫球蛋白A肾病;肠黏膜;Peyer结;信号转导与转录激活因子3信号通路


          Study on improvement effects and mechanism of rhein on immunoglobulin A nephropathy
                                        1
                        1
          CHEN Shanshan ,PENG Shengnan ,HONG Ting(1. School of Chinese Medicine, Jiangxi University of Chinese
                                                     2
          Medicine,  Nanchang  330004,  China;2.  School  of  Clinical  Medicine,  Jiangxi  University  of  Chinese  Medicine,
          Nanchang 330004, China)
          ABSTRACT   OBJECTIVE To study the improvement effects and mechanism of rhein on immunoglobulin A nephropathy (IgAN)
          model rat based on signal transducer and activator of transcription 3 (STAT3) signaling pathway. METHODS Rats were randomly
          divided  into  normal  control  group,  IgAN  model  group  and  rhein  treatment  group,  with  10  rats  in  each  group.  IgAN  model  group
          and  rhein  treatment  group  were  given  combination  of  bovine  serum  albumin+lipopolysaccharide+carbon  tetrachloride  to  induce
          IgAN  model.  Since  the  7th  week,  rhein  treatment  group  rats  were  intragastrically  given  relevant  medicine,  and  normal  control
          group  and  model  group  rats  were  given  equal  amount  of  normal  saline  intragastrically,  for  consecutive  4  weeks.  After  the  last
          administration, the count of urine sediment erythrocyte, 24 h-urine total protein (UTP), the levels of immunoglobulin A (IgA) in
          serum  and  secretory  immunoglobulin A (sIgA)  in  intestinal  mucosa  were  detected.  The  pathological  changes  of  Peyer’s  patch  in
          renal cortex and intestinal mucosa and IgA deposition in renal cortex were observed. The expressions of interleukin-17 (IL-17), IL-
          6 and transforming growth factor β (TGF-β) in Peyer’s patch of intestinal mucosa in rats were detected. The expressions of STAT3
          and related orphan receptor γt (RORγt) mRNA in Peyer’s patch were detected. The expressions of p-STAT3 and RORγt proteins in
          Peyer’s patch were detected. RESULTS Compared with normal control group, the count of urine sediment erythrocyte, 24 h-UTP,
          the  levels  of  IgA  in  serum  and  sIgA  in  intestinal  mucosa  were  increased  significantly  in  IgAN  model  group (P<0.01);  enlarged
                                                             renal  corpuscles,  dilated  renal  sacs,  obvious  intratubular
             Δ 基金项目 江西省自然科学基金项目(No.20202BABL206028);         mesangial  hyperplasia  and  fibrosis  were  observed  in  renal
          江西省教育厅科学技术研究项目(No.GJJ190630,No.191641);江西          cortex;  the  volume  and  germinal  center  of  Peyer’s  patch  in
          中 医药大学中西医结合一级学科(江西省双一流学科)项目(No.                    intestinal  mucosa  increased;  IgA  deposition  of  renal  cortex
          zxyylxk20220103)
                                                             was  obvious;  the  expressions  of  IL-17,  IL-6  and  TGF- β  in
             *第一作者 硕士研究生。研究方向:自身免疫性疾病的治疗和发
          病机制。E-mail:1025376860@qq.com                       Peyer’s  patch,  mRNA  expressions  of  STAT3  and  RORγt,
             # 通信作者 副教授,硕士生导师,博士。研究方向:自身免疫性疾                 protein  expressions  of  p-STAT3  and  RORγt  were  increased
          病的治疗和发病机制。E-mail:3603405@qq.com                    significantly (P<0.01).  Compared  with  IgAN  model  group,


          中国药房  2023年第34卷第7期                                                 China Pharmacy  2023 Vol. 34  No. 7    · 819 ·
   52   53   54   55   56   57   58   59   60   61   62