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黄芪多糖对腹膜透析大鼠腹膜纤维化和血管生成的影响及机制
                                                                                                           Δ


          冯 雪 ,彭 斌,冯 立,朱双益,胡 溪,熊 玮,高 智(武汉市中医医院肾病科,武汉 430014)
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                *
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)06-0712-06
          DOI  10.6039/j.issn.1001-0408.2024.06.13

          摘   要  目的  探讨黄芪多糖(APS)对腹膜透析(PD)大鼠腹膜纤维化和血管生成的影响及机制。方法  将大鼠分为正常对照组
         (Control组)、模型组(PD组)、70 mg/kg APS组(APS-L组)、140 mg/kg APS组(APS-H组)、140 mg/kg APS+40 mg/kg缺氧诱导因子
          1α(HIF-1α)激动剂DMOG组(APS-H+DMOG组),每组12只。后4组大鼠构建PD大鼠模型。各给药组大鼠灌胃相应剂量的APS
          及腹腔注射相应剂量的DMOG,Control组和PD组大鼠灌胃等体积生理盐水,每天给药1次,连续4周。末次给药后,检测大鼠腹
          膜超滤量(UF)、葡萄糖转运量(MTG)和血清中肌酐(Scr)、尿素氮(BUN)水平;观察腹膜组织病理学变化和纤维化情况(腹膜厚度
          和胶原纤维沉积占比);检测腹膜组织微血管密度和α-平滑肌肌动蛋白(α-SMA)、层粘连蛋白(LN)、HIF-1α、血管内皮生长因子
         (VEGF)蛋白表达水平。结果  与Control组比较,PD组大鼠间皮细胞结构疏松,腹膜间皮细胞脱落,炎症细胞浸润,腹膜厚度和胶
          原纤维沉积占比均显著增加(P<0.05);MTG,血清中Scr、BUN水平,腹膜组织微血管密度和α-SMA、LN、HIF-1α、VEGF蛋白表达
          水平均显著升高,而UF显著降低(P<0.05);与PD组比较,APS-L组、APS-H组大鼠上述指标均显著改善(P<0.05),其中APS-H
          组改善效果优于APS-L组(P<0.05);与APS-H组比较,APS-H+DMOG组大鼠上述指标变化均逆转(P<0.05)。结论  APS可以通
          过抑制HIF-1α/VEGF信号通路来抑制PD大鼠腹膜纤维化及血管新生。
          关键词  黄芪多糖;缺氧诱导因子-1α/血管内皮生长因子信号通路;腹膜透析;腹膜纤维化;血管生成

          Effect  and  mechanism  of  Astragalus  polysaccharide  on  peritoneal  fibrosis  and  angiogenesis  in  peritoneal
          dialysis rats
          FENG Xue,PENG Bin,FENG Li,ZHU Shuangyi,HU Xi,XIONG Wei,GAO Zhi(Dept. of Nephrology, Wuhan
          Hospital of Traditional Chinese Medicine, Wuhan 430014, China)


          ABSTRACT    OBJECTIVE  To  investigate  the  effect  and  mechanism  of  Astragalus  polysaccharide (APS)  on  peritoneal  fibrosis
          and angiogenesis in rats with peritoneal dialysis (PD). METHODS Rats were randomly divided into normal control group (Control
          group), model group (PD group), 70 mg/kg APS group (APS-L group), 140 mg/kg APS group (APS-H group), and 140 mg/kg
          APS+40 mg/kg hypoxia-inducible factor-1α (HIF-1α) agonist DMOG group (APS-H+DMOG group), with 12 rats in each group.
          PD  rat  models  were  constructed  in  the  last  four  groups  of  rats. Administration  groups  were  given APS  intragastrically  and  DMOG
          intraperitoneally.  Control  group  and  PD  group  were  given  constant  volume  of  normal  saline  intragastrically,  once  a  day,  for  4
          consecutive  weeks. After  the  last  medication,  the  peritoneal  ultrafiltration (UF),  mass  transfer  of  glucose (MTG),  the  levels  of
          serum  creatinine (Scr)  and  blood  urea  nitrogen (BUN)  were  detected  in  rats;  peritoneal  histomorphology  and  peritoneal  fibrosis
         (peritoneal  thickness  and  proportion  of  collagen  fiber  deposition)  were  observed;  the  microvascular  density  and  the  expression
          levels of α-smooth muscle actin (α-SMA), laminin (LN), HIF-1α and vascular endothelial growth factor (VEGF) proteins were
          detected in peritoneal tissue of rats. RESULTS Compared with Control group, the mesothelium of rats in the PD group was loosely
          arranged  and  shed,  inflammatory  cells  infiltrated,  the  peritoneal  thickness  and  proportion  of  collagen  fiber  deposition  were
          increased  significantly (P<0.05).  The  levels  of  MTG,  Scr  and  BUN  in  serum,  microvascular  density  and  the  expressions  of
          α-SMA,  LN,  HIF-1α  and  VEGF  proteins  were  significantly  increased,  while  the  level  of  UF  was  significantly  decreased (P<
          0.05); compared with PD group, the levels of above indexes were significantly reversed in APS-L and APS-H groups (P<0.05),
          and the improvement of APS-H group was better than APS-L group (P<0.05). Compared with APS-H group, the levels of above
                                                              indexes  in APS-H+DMOG  group  were  all  reversed (P<0.05).
              Δ 基金项目 武汉市医学科研项目(No.WX21D82);武汉市科学技
                                                              CONCLUSIONS  APS  inhibits  peritoneal  fibrosis  and  angioge-
          术局知识创新专项(No.2022020801020585)                       nesis in PD rats by inhibiting HIF-1α/VEGF signaling pathway.
             *第一作者 主治医师,硕士。研究方向:中西医结合治疗肾病。
          E-mail:c3pezna@163.com                              KEYWORDS    Astragalus   polysaccharide;   HIF-1α/VEGF
              # 通信作者 主任医师。研究方向:中西医结合治疗肾病。E-                   signaling  pathway;  peritoneal  dialysis;  peritoneal  fibrosis;
          mail:banhoug49007@163.com                           angiogenesis


          · 712 ·    China Pharmacy  2024 Vol. 35  No. 6                               中国药房  2024年第35卷第6期
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