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蒙花苷体内外抗肺纤维化作用及其机制研究
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          黄梨婷 ,王珠强,王依婷,范卫锋,董更婷,彭伟文(广州中医药大学附属中山中医院药学部,广东  中山
          528400)

          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)03-0333-07
          DOI  10.6039/j.issn.1001-0408.2023.03.15

          摘  要  目的  考察蒙花苷的体内外抗纤维化作用,并初步探讨其作用机制。方法  将C57BL/6J小鼠随机分为正常组(羧甲基纤
          维素钠)、模型组(羧甲基纤维素钠)、阳性对照组(吡非尼酮,200 mg/kg)和蒙花苷低、高剂量组(12.5、25 mg/kg),每组8只。除正常
          组外,其余各组小鼠均制备肺纤维化模型。造模结束后,灌胃给药,每天1次,连续14 d。观察小鼠一般情况,测定其肺指数,检测
          其血清中肿瘤坏死因子α(TNF-α)、转化生长因子β1 (TGF-β1 )水平以及肺组织中白细胞介素6(IL-6)水平;采用苏木素-伊红(HE)
          染色及Masson染色观察其肺组织病理学变化,并参照Ashcroft评分标准进行肺纤维化评分;检测其肺组织中α-平滑肌肌动蛋白
         (α-SMA)、Ⅰ型胶原蛋白(Collagen Ⅰ)、磷酸化胞外信号调节激酶(p-ERK1/2)、TGF-β1的表达水平。使用TGF-β1刺激人胚肺成纤
          维细胞HFL1建立体外肺纤维化模型,实验设置正常组、模型组和蒙花苷低、中、高浓度组(3.7、7.4、14.8 mg/L),培养48 h后,检测
          细胞中α-SMA、Collagen Ⅰ、p-ERK1/2蛋白表达水平。结果  在体内实验中,与正常组比较,模型组小鼠肺指数和TNF-α、TGF-β1、
          IL-6水平均显著升高(P<0.01);肺泡中出现大量炎症浸染及细胞纤维化等病变,且有大量胶原蛋白沉积,HE染色和Masson染色
          评分均显著升高(P<0.01);肺组织中α-SMA、Collagen Ⅰ、p-ERK1/2及TGF-β1蛋白表达均显著上调(P<0.01)。与模型组比较,
          蒙花苷高剂量组小鼠上述指标均显著改善(P<0.05或P<0.01),蒙花苷低剂量组大部分指标(除肺指数外)均显著改善(P<0.05
          或P<0.01)。在体外实验中,与空白组比较,模型组细胞出现密度变大、明显增殖等变化,细胞中α-SMA、Collagen Ⅰ和p-ERK1/2
          蛋白表达均显著上调(P<0.05或P<0.01)。与模型组比较,蒙花苷各浓度组细胞密度变小,形态逐渐恢复正常;蒙花苷高浓度组
          细胞中上述蛋白及蒙花苷中浓度组细胞中p-ERK1/2蛋白表达均显著下调(P<0.05或P<0.01)。结论  蒙花苷可能通过调控ERK
          及炎症相关通路,减轻炎症反应,从而发挥抗肺纤维化作用。
          关键词  蒙花苷;肺纤维化;胞外信号调节激酶通路;炎症通路

          Study on the anti-pulmonary fibrosis effect of linarin in vivo and in vitro and its mechanism
          HUANG Liting,WANG Zhuqiang,WANG Yiting,FAN Weifeng,DONG Gengting,PENG Weiwen(Dept.  of
          Pharmacy,  Zhongshan  Hospital  of  Traditional  Chinese  Medicine  Affiliated  to  Guangzhou  University  of
          Traditional Chinese Medicine, Guangdong Zhongshan 528400, China)

          ABSTRACT   OBJECTIVE  To  investigate  the  anti-pulmonary  fibrosis  effect  of  linarin  in  vivo  and  in  vitro,  and  investigate  its
          mechanism preliminarily. METHODS C57BL/6J mice were randomly divided into normal group (carboxymethylcellulose sodium),
          model  group (carboxymethylcellulose  sodium),  positive  control  group (pirfenidone,  200  mg/kg),  linarin  low-dose  and  high-dose
          groups (12.5,  25  mg/kg),  with  8  mice  in  each  group.  Except  for  normal  group,  pulmonary  fibrosis  model  was  induced  in  other
          groups. After modeling, they were given relevant medicine intragastrically, once a day, for consecutive 14 d. The general situation
          of  mice  was  observed,  and  their  lung  indexes  were  measured;  the  levels  of  tumor  necrosis  factor-α (TNF-α)  and  transforming
          growth factor-β1   (TGF-β1 ) in serum and interleukin-6 (IL-6) in lung tissue were determined. Hematoxylin-eosin (HE) staining and
          Masson  staining  were  used  to  observe  the  histopathological  morphology  of  lung.  The  pulmonary  fibrosis  was  scored  according  to
          Ashcroft score standard. The expressions of α-smooth muscle actin (α-SMA) and (type Ⅰ collagen, Collagen Ⅰ), phosphorylated
          extracellular  signal-regulated  kinase (p-ERK1/2)  and  TGF-β1  in  lung  tissues  were  detected.  HFL1  cells  were  stimulated  by  TGF-
          β1 to form pulmonary fibrosis model in vitro, which were divided into normal group, model group and linarin low-, medium- and
          high-concentration  groups (3.7,  7.4,  14.8  mg/L). After  being  cultured  for  48  h,  the  protein  expressions  of  α-SMA,  Collagen  Ⅰ
                                                             and  p-ERK1/2  in  HFL1  cells  were  detected.  RESULTS  In
             Δ 基金项目 中山市第三批社会公益与基础研究专项(医疗卫生                   vivo,  compared  with  normal  group,  the  lung  index  of  model
          重点项目)(No.2020B3007)                                group  and  the  levels  of  TNF- α,  TGF- β1  and  IL-6  were
             *第一作者 硕士研究生。研究方向:中药制剂开发与研究。电                    significantly  increased (P<0.01).  There  were  a  large  number
          话:0760-89980219。E-mail:812416031@qq.com
                                                             of  inflammatory  infiltration  and  cellular  fibrosis  lesions  in  the
             # 通信作者 主任中药师,硕士生导师。研究方向:中药制剂开发
          与研究。电话:0760-89980219。E-mail:1432340131@qq.com      alveoli,  and  a  large  number  of  collagen  depositions.  The


          中国药房  2023年第34卷第3期                                                 China Pharmacy  2023 Vol. 34  No. 3    · 333 ·
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