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隐丹参酮调节PI3K/Akt/mTOR信号通路对心肾综合征大鼠心肾

          功能的保护作用
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          王 心 ,鲁 华 ,孔露娇,郭晓阳,马亭亭,卢 玥(邢台市人民医院肾内科,河北 邢台 054000)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)17-2096-06
          DOI  10.6039/j.issn.1001-0408.2024.17.07

          摘   要  目的  探究隐丹参酮(CTS)调节磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(Akt)/哺乳动物雷帕霉素靶蛋白(mTOR)信号通路
          对心肾综合征(CRS)大鼠心肾功能的保护作用及机制。方法  采用左冠状动脉前降支结扎结合肾急性缺血再灌注损伤的方法建
          立大鼠CRS模型,并将模型大鼠随机分为CRS模型组(CRS组)、低剂量CTS干预组(CTS-L组)、高剂量CTS干预组(CTS-H组)和
          高剂量CTS+PI3K激活剂740Y-P组(CTS-H+740Y-P组),每组12只;另设12只大鼠为正常对照组(Normal组),手术但不造模。CTS-L
          组、CTS-H 组大鼠分别灌胃 30、60 mg/kg CTS,每日 1 次,连续 14 d;CTS-H+740Y-P 组除灌胃 CTS 60 mg/kg 外,还需腹腔注射 10
          mg/kg 740Y-P,每日1次,连续14 d。末次给药后,检测大鼠心功能指标[左室射血分数(LVEF)、左室收缩末期内径(LVESD)、左室
          舒张末期内径(LVEDD)、左室短轴缩短率(LVFS)]和肾功能指标[24 h 尿蛋白、血尿素氮(BUN)、血肌酐(Scr)、脑钠肽(BNP)]水
          平;观察大鼠心肾组织病理学变化和纤维化情况;检测大鼠心肾组织中PI3K/Akt/mTOR信号通路相关蛋白的表达水平。结果  与
          Normal组比较,CRS组大鼠LVEF、LVFS均显著降低(P<0.05);LVESD、LVEDD、24 h尿蛋白,血清BUN、Scr、BNP水平,心肾组织
          胶原染色面积,心肾组织中PI3K、Akt、mTOR蛋白磷酸化水平均显著升高/增大(P<0.05);心肌细胞形态肥大、排列紊乱;肾小管
          结构紊乱、上皮细胞皱缩,存在炎症细胞浸润。与CRS组比较,CTS-L组、CTS-H组大鼠上述指标变化均显著逆转(P<0.05),心肾
          功能有所恢复,病理损伤和纤维化程度减轻。PI3K激活剂740Y-P减弱了CTS对CRS大鼠心肾功能的保护作用。结论  CTS可保
          护CRS大鼠的心肾功能,其作用机制可能与抑制PI3K/Akt/mTOR信号通路有关。
          关键词  隐丹参酮;PI3K/Akt/mTOR信号通路;心肾综合征;心肾功能

          Protective  effects  of  cryptotanshinone  on  heart  and  kidney  function  in  rats  with  cardiorenal  syndrome  by
          regulating PI3K/Akt/mTOR signaling pathway
          WANG Xin,LU Hua,KONG Lujiao,GUO Xiaoyang,MA Tingting,LU Yue(Dept.  of  Nephrology,  Xingtai
          People’s Hospital, Hebei Xingtai 054000, China)


          ABSTRACT      OBJECTIVE  To  investigate  the  protective  effect  and  mechanism  of  cryptotanshinone (CTS)  on  heart  and  kidney
          function  in  rats  with  cardiorenal  syndrome (CRS)  by  regulating  phosphoinositide  kinase-3 (PI3K)/protein  kinase  B (Akt)/
          mammalian  target  of  rapamycin (mTOR)  signaling  pathway.  METHODS  CRS  model  of  rats  was  induced  by  left  anterior
          descending  coronary  artery  ligation  combined  with  acute  renal  ischemia-reperfusion  injury.  Model  rats  were  randomly  divided  into
          CRS  model  group (CRS  group),  low-dose  CTS  group (CTS-L),  high-dose  CTS  group (CTS-H  group),  high-dose  CTS+PI3K
          activator  740Y-P  group (CTS-H+740Y-P  group),  with  12  rats  in  each  group. Another  12  rats  were  selected  as  the  normal  control
          group (Normal group) and were carried out surgery without modeling. CTS-L group and CTS-H group were respectively given CTS
          30  and  60  mg/kg  intragastrically,  once  a  day,  for  consecutive  14  d.  Besides  the  intervention  of  CTS  60  mg/kg  intragastrically,
          CTS-H+740Y-P  group  was  given  10  mg/kg  740Y-P  intraperitoneally,  once  a  day,  for  14  consecutive  days.  After  the  last
          medication,  the  levels  of  cardiac  function  [left  ventricular  ejection  fraction (LVEF),  left  ventricular  end-systolic  diameter
         (LVESD), left ventricular end-diastolic diameter (LVEDD), left ventricular fraction shortening (LVFS)] and renal function [24 h
          urinary  protein,  blood  urea  nitrogen (BUN),  serum  creatinine (Scr),  brain  natriuretic  peptide (BNP)]  were  detected  in  rats. The
          pathological  changes  and  fibrosis  of  the  heart  and  kidney  in  rats  were  observed;  the  expressions  of  PI3K/Akt/mTOR  signaling
          pathway in heart and renal tissue were all detected. RESULTS Compared with Normal group, the levels of LVEF and LVFS in rats
          were  all  decreased  significantly  in  CRS  group (P<0.05);  the  levels  of  LVESD,  LVEDD,  24  h  urinary  protein,  serum  levels  of
                                                              BUN, Scr and BNP, collagen area and the phosphorylation of
              Δ 基金项目 河北省 2023 年度医学科学研究课题计划项目(No.              PI3K,  Akt  and  mTOR  protein  in  heart  and  renal  tissue  were
          20232016)                                           all  increased  significantly  (P<0.05).  The  morphology  of
             *第一作者 主治医师,硕士。研究方向:各种急慢性肾病的诊治。
                                                              myocardial  cells  was  enlarged  and  disordered;  the  structure  of
          E-mail:18310683019@163.com
              # 通信作者 主任医师,博士。研究方向:血液净化及血管通路技                  renal  tubules  was  disordered,  epithelial  cells  were  wrinkled,
          术。E-mail:31612677@qq.com                            and  there  was  infiltration  of  inflammatory  cells.  Compared


          · 2096 ·    China Pharmacy  2024 Vol. 35  No. 17                            中国药房  2024年第35卷第17期
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