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金合欢素对哮喘幼年大鼠的改善作用及机制
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                 1*
          吕士申 ,张忠文 ,邵淑琳 (1.滕州市中心人民医院儿科三病区,山东 滕州 277599;2.滕州市中心人民医院
                                   1 #
                           2
          儿内科,山东 滕州 277599)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)20-2466-05
          DOI  10.6039/j.issn.1001-0408.2024.20.04

          摘   要  目的  基于沉默信息调节因子1(SIRT1)/AMP活化蛋白激酶(AMPK)信号通路探讨金合欢素对哮喘幼年大鼠的改善作
          用及机制。方法  将幼年SD大鼠随机分为对照组、哮喘组、金合欢素组(13.33 mg/kg,灌胃)、SIRT抑制剂EX-527组(1 mg/kg,腹腔
          注射)、金合欢素+EX-527组(13.33 mg/kg金合欢素,灌胃+1 mg/kg EX-527,腹腔注射),每组12只(雌雄各半)。除对照组外,其余
          各组大鼠以腹腔注射卵清蛋白致敏+雾化吸入卵清蛋白增敏的方式复制哮喘模型。造模后,各药物组大鼠灌胃或(和)腹腔注射相
          应药液,每天 1 次,持续 2 周。末次给药后,检测其支气管肺泡灌洗液(BALF)中细胞总数、嗜酸性粒细胞数占比和白细胞介素 5
         (IL-5)、IL-4、肿瘤坏死因子α(TNF-α)水平,观察肺组织病理形态学变化和杯状细胞异常增生情况,检测肺组织中丙二醛(MDA)、
          超氧化物歧化酶(SOD)水平,以及 SIRT1、AMPK 和过氧化物酶体增殖物激活受体 γ 共激活因子 1α(PGC-1α)蛋白的表达情况。
          结果  与对照组比较,哮喘组大鼠肺组织中有大量的炎症细胞浸润和明显的杯状细胞异常增生;BALF中细胞总数、嗜酸性粒细胞
          数占比和 IL-5、IL-4、TNF-α 水平,肺组织过碘酸希夫染色(PAS)评分,以及肺组织中 MDA 水平均显著升高(P<0.05);肺组织中
          SOD水平、SIRT1、PGC-1α蛋白的表达水平和AMPK蛋白的磷酸化水平均显著降低(P<0.05)。与哮喘组比较,金合欢素组大鼠
          肺组织的病理改变和杯状细胞异常增生均有所减轻,各定量指标均显著改善(P<0.05),而EX-527组大鼠肺组织的病理改变和杯状
          细胞异常增生均有所加重,各定量指标均显著恶化(P<0.05);联用EX-527可显著逆转金合欢素对哮喘幼年大鼠氧化应激及气道炎
          症的改善作用。结论  金合欢素可抑制哮喘幼年大鼠的氧化应激和气道炎症,上述作用可能与激活SIRT1/AMPK信号通路有关。
          关键词  金合欢素;哮喘;氧化应激;气道炎症;SIRT1/AMPK信号通路;幼年大鼠

          Improvement effect of acacetin on juvenile asthma rats and its mechanism
                                                         1
                       1
          LYU Shishen ,ZHANG Zhongwen ,SHAO Shulin(1.  Pediatric Ward Three, Tengzhou  Central  People’s
                                           2
          Hospital,  Shandong  Tengzhou  277599,  China;2.  Pediatric  Department,  Tengzhou  Central  People’s  Hospital,
          Shandong Tengzhou 277599, China)
          ABSTRACT    OBJECTIVE To explore the improvement effect and mechanism of acacetin on juvenile asthma rats based on the silence
          information regulator 1 (SIRT1)/AMP-activated protein kinase (AMPK) signaling pathway. METHODS Juvenile SD rats were randomly
          divided  into  control  group,  asthma  group,  acacetin  group (13.33  mg/kg,  gavage),  SIRT  inhibitor  EX-527  group (1  mg/kg,
          intraperitoneal  injection)  and  acacetin+EX-527  group (13.33  mg/kg  acacetin,  gavage+1  mg/kg  EX-527,  intraperitoneal  injection),  with
          12  rats  in  each  group (half  male  and  half  female).  Except  for  the  control  group,  the  other  groups  were  sensitized  by  intraperitoneal
          injection of ovalbumin and nebulized inhalation of ovalbumin to induce the asthma model. After modeling, rats in each drug group were
          orally  administered  or (and)  intraperitoneally  injected  with  the  corresponding  medication  once  a  day  for  2  weeks.  After  the  last
          administration, the total number of cells, the proportion of eosinophils, and the levels of interleukin-5 (IL-5), IL-4 and tumor necrosis
          factor-α (TNF-α)  in  the  bronchoalveolar  lavage  fluid (BALF)  were  measured. The  pathological  changes  and  abnormal  proliferation  of
          goblet cells in lung tissue were observed, the levels of malondialdehyde (MDA) and superoxide dismutase (SOD) in lung tissue and the
          protein  expressions  of  SIRT1,  AMPK  and  peroxisome  proliferator  activated  receptor-gamma  co-activator  factor-1α(PGC-1α)  were
          detected.  RESULTS  Compared  with  control  group,  there  was  a  large  number  of  inflammatory  cell  infiltration  and  obvious  goblet  cell
          dysplasia in the lung tissue of rats in asthma group; the total number of cells in BALF, the proportion of eosinophils, the levels of IL-5,
          IL-4 and TNF-α in BALF, PAS score and MDA level in the lung tissue were significantly increased (P<0.05); the SOD level, protein
          expressions  of  SIRT1  and  PGC-1α  and  protein  phosphorylation  level  of  AMPK  in  lung  tissue  were  significantly  decreased  in  asthma
          group (P<0.05).  Compared  with  the  asthma  group,  the  pathological  changes  of  lung  tissue  and  goblet  cell  dysplasia  of  rats  were
          reduced,  and  all  quantitative  indexes  were  significantly  improved  in  acacetin  group (P<0.05),  while  the  pathological  changes  of  lung
          tissue  and  goblet  cell  dysplasia  of  rats  were  increased,  and  all  quantitative  indexes  were  significantly  worsened  in  EX-527  group (P<
          0.05).  The  combination  of  EX-527  could  significantly  reverse  the  effects  of  acacetin  on  oxidative  stress  and  airway  inflammation  in
                                                              juvenile  asthma  rats.  CONCLUSIONS  Acacetin  can  inhibit
              Δ  基金项目 山 东 省 医 药 卫 生 科 技 发 展 计 划 项 目(No.
                                                              oxidative  stress  and  airway  inflammation  in  juvenile  asthma  rats,
          202006011247)                                       which  may  be  related  to  the  activation  of  the  SIRT1/AMPK
             *第一作者 主治医师,硕士。研究方向:儿科疾病诊疗。E-mail:
          jinanlvshishen@163.com                              signaling pathway.
              # 通信作者 主治医师,硕士。研究方向:儿科疾病诊疗。E-mail:              KEYWORDS    acacetin;  asthma;  oxidative  stress;  airway
          shao_shulin@163.com                                 inflammation; SIRT1/AMPK signaling pathway; juvenile rats


          · 2466 ·    China Pharmacy  2024 Vol. 35  No. 20                            中国药房  2024年第35卷第20期
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