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原花青素通过 SIRT1/AMPK 信号通路对庆大霉素致大鼠急性肾

          损伤的改善机制
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          符妹丽 ,江 强 ,符圣亮 ,符书山 ,谢桃梅 ,黎珊珊(1.儋州市人民医院肾内科,海南 儋州 571700;2.儋州
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          市人民医院内分泌科,海南 儋州 571700)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)07-0807-06
          DOI  10.6039/j.issn.1001-0408.2024.07.07

          摘  要  目的  探究原花青素对庆大霉素致大鼠急性肾损伤(AKI)的改善机制。方法  通过腹腔注射硫酸庆大霉素构建AKI大鼠
          模型,将造模成功的大鼠随机分为模型对照组、盐酸贝那普利5 mg/kg组(阳性对照)、原花青素50 mg/kg组、原花青素100 mg/kg
          组、原花青素200 mg/kg组,每组10只;另取10只正常大鼠作为正常对照组。各给药组大鼠灌胃相应药液,正常对照组和模型对照
          组大鼠灌胃等体积生理盐水。所有大鼠每天给药1次,连续28 d。末次给药后,检测血清中血清肌酐(SCr)、尿素氮(BUN)、丙二
          醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)及24 h尿液中尿蛋白(UP)水平;计算肾脏指数;观察大鼠肾组
          织病理变化并进行病理评分;检测肾组织细胞凋亡率和胱天蛋白酶-3(Caspase-3)、B细胞淋巴瘤2基因相关X蛋白(Bax)表达水
          平,以及沉默信息调节因子1(SIRT1)、AMP活化蛋白激酶(AMPK)蛋白的磷酸化水平。结果  与模型对照组比较,各给药组大鼠
          SCr、BUN、UP、MDA水平,肾脏指数,肾组织病理评分,肾组织细胞凋亡率及肾组织中Caspase-3、Bax蛋白表达水平均显著降低,
          SOD、GSH-Px水平和肾组织中SIRT1、AMPK蛋白的磷酸化水平均显著升高(P<0.05),且原花青素的作用存在剂量依赖性(P<
          0.05);原花青素200 mg/kg组与盐酸贝那普利5 mg/kg组比较,上述指标差异均无统计学意义(P>0.05)。结论  原花青素对AKI
          大鼠的改善作用可能与其激活SIRT1/AMPK信号通路进而抑制氧化应激有关。
          关键词  原花青素;SIRT1/AMPK信号通路;急性肾损伤;氧化应激

          Improvement  mechanism  of  proanthocyanidins  on  gentamicin-induced  acute  kidney  injury  of  rats  through
          SIRT1/AMPK signaling pathway
          FU Meili ,JIANG Qiang ,FU Shengliang ,FU Shushan ,XIE Taomei ,LI Shanshan(1.  Dept.  of  Nephrology,
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          Danzhou  People’s  Hospital,  Hainan  Danzhou  571700,  China;2.  Dept.  of  Endocrinology,  Danzhou  People’s
          Hospital, Hainan Danzhou 571700, China)
          ABSTRACT   OBJECTIVE  To  explore  the  improvement  mechanism  of  proanthocyanidins  on  acute  kidney  injury (AKI)  induced
          by gentamicin in rats. METHODS Gentamicin sulfate was injected intraperitoneally to construct the AKI rat model; the model rats
          were randomly divided into model control group, benazepril hydrochloride 5 mg/kg group (positive control), proanthocyanidins 50
          mg/kg  group,  proanthocyanidins  100  mg/kg  group,  and  proanthocyanidins  200  mg/kg  group,  with  10  rats  in  each  group;  in
          addition, 10 normal rats were selected to be treated as the normal control group. The rats in each administration group were given
          corresponding  liquid  intragastrically,  and  the  normal  control  group  and  model  control  group  were  given  equal  volumes  of  normal
          saline  intragastrically,  once  a  day,  for  28  consecutive  days. After  the  last  administration,  the  levels  of  serum  creatinine (SCr),
          blood urea nitrogen (BUN), malondialdehyde (MDA), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and 24 h
          urinary protein (UP) were detected; the renal index was calculated; the pathological changes of renal tissue were observed and the
          pathological  score  was  calculated;  the  apoptotic  rate  of  cells  in  renal  tissue  and  the  expression  levels  of  Caspase-3  and  Bcl-2
          associated  X  protein (Bax),  as  well  as  the  phosphorylation  levels  of  silent  information  regulator  of  transcription  1 (SIRT1)  and
          AMP-activated  protein  kinase (AMPK)  were  detected.  RESULTS  Compared  with  the  model  control  group,  the  levels  of  SCr,
          BUN, UP and MDA, the renal index, the pathological score of renal tissue, the apoptotic rate of cells in renal tissue, the protein
          expression  levels  of  Caspase-3  and  Bax  in  renal  tissue  of  rats  in  each  administration  group  were  decreased  significantly;  SOD  and
                                                             GSH-Px  levels,  phosphorylation  levels  of  SIRT1  and  AMPK
             Δ 基金项目 海南省卫生健康行业科研项目(No.21A200541)
                                                             protein  were  increased  significantly (P<0.05),  and  the  effect
             * 第一作者 主 治 医 师 。 研 究 方 向 :肾 脏 疾 病 。 E-mail:
          meilifu682@sina.com                                of  proanthocyanidins  was  in  a  dose-dependent  manner (P<


          中国药房  2024年第35卷第7期                                                 China Pharmacy  2024 Vol. 35  No. 7    · 807 ·
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