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木犀草素对妊娠糖尿病大鼠胎盘功能障碍的改善作用及机制
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          胡殿鹏 ,张 举 ,侯奕忻 ,程 琳 ,卢佳璐(1.南阳医学高等专科学校基础医学部,河南 南阳 473000;2.南阳
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          医学高等专科学校第一附属医院产科,河南 南阳 473000)
          中图分类号  R965;R714.256      文献标志码  A      文章编号  1001-0408(2024)22-2763-06
          DOI  10.6039/j.issn.1001-0408.2024.22.10


          摘  要  目的  基于hedgehog(Hh)信号通路探讨木犀草素(Lut)对妊娠糖尿病(GDM)大鼠胎盘功能障碍的改善作用及潜在机制。
          方法  随机选择雌鼠20只作为对照组,以正常饲料喂养。剩余雌鼠以高脂高糖饲料喂养8周后与雄性大鼠合笼,取妊娠大鼠,腹腔
          注射 35 mg/kg 的链脲佐菌素以构建 GDM 雌鼠模型;将造模成功的雌鼠随机分为模型组、SAG 组(Hh 信号通路激活剂 SAG 50
          mg/kg)、Lut低剂量组(Lut 40 mg/kg)、Lut高剂量组(Lut 80 mg/kg)、Lut高+ITR组(Lut 80 mg/kg+Hh信号通路拮抗剂伊曲唑康50
          mg/kg),每组20只。各药物组雌鼠灌胃相应药液,每天1次,持续19 d。末次给药后,检测各组雌鼠的糖脂代谢参数(空腹血糖、空
          腹胰岛素水平和胰岛素抵抗指数)、胎盘质量和通透性[以伊文思蓝(EB)含量表示],观察其胎盘组织病理变化,检测其胎盘组织中
          超氧化物歧化酶(SOD)活性及丙二醛(MDA)、还原型谷胱甘肽(GSH)含量以及 Sonic Hh(Shh)、Patched-1(Ptch1)、Smoothened
         (Smo)、Gil家族锌指蛋白1(Gli1)的表达水平。结果  与对照组相比,模型组大鼠胎盘组织中毛细血管管腔狭窄,血管周围可见纤
          维化区域;其糖脂代谢参数、胎盘质量、EB及MDA含量均显著升高,SOD活性、GSH含量及Shh、Ptch1、Smo、Gli1蛋白的表达水平
          均显著降低(P<0.05)。与模型组相比,SAG 组和 Lut 低、高剂量组大鼠胎盘组织中毛细血管管腔变宽,血管周围纤维化明显减
          少;糖脂代谢参数、胎盘质量、EB及MDA含量均显著降低,SOD活性、GSH含量及Shh、Ptch1、Smo、Gli1蛋白的表达水平均显著升
          高(P<0.05);且Lut高剂量组上述参数与SAG组相比差异均无统计学意义(P>0.05)。Hh信号通路拮抗剂伊曲唑康可显著逆转
          Lut对上述指标的改善作用(P<0.05)。结论  Lut可改善GDM大鼠的糖代谢参数,降低胎盘通透性,减轻其胎盘组织病理损伤和
          氧化应激,上述作用可能与激活Hh信号通路有关。
          关键词  木犀草素;妊娠糖尿病;胎盘功能障碍;hedgehog信号通路

          Improving  effect  and  its  mechanism  of  luteolin  on  placental  dysfunction  in  rats  with  gestational  diabetes

          mellitus
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          HU Dianpeng ,ZHANG Ju ,HOU Yixin ,CHENG Lin ,LU Jialu(1. Dept. of Basic Medicine, Nanyang Medical
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          College,  Nanyang  Henan  473000,  China;2.  Dept.  of  Obstetrics,  the  First  Affiliated  Hospital  of  Nanyang
          Medical College, Nanyang Henan 473000, China)
          ABSTRACT   OBJECTIVE  To  explore  the  improving  effect  of  luteolin (Lut)  on  placental  dysfunction  in  rats  with  gestational
          diabetes mellitus (GDM) and its potential mechanism based on hedgehog (Hh) signaling pathway. METHODS Twenty female rats
          were randomly selected as a control group and fed a normal diet. The remaining female rats were fed a high-fat and high-sugar diet
          for  8  weeks  and  then  caged  with  male  rats.  Pregnant  rats  were  administered  35  mg/kg  streptozotocin  intraperitoneally  to  establish
          GDM  models.  Successfully  modeled  female  rats  were  randomly  allocated  to  model  group,  SAG  group (Hh  signaling  pathway
          activator  SAG  50  mg/kg),  Lut  low-dose  group (Lut  40  mg/kg),  Lut  high-dose  group (Lut  80  mg/kg),  and  Lut  high+ITR  group
         (Lut  80  mg/kg+Hh  signaling  pathway  antagonist  itraconazole  50  mg/kg),  with  20  rats  in  each  group.  Female  rats  in  each  drug
          group were intubated with the corresponding drug solution once a day for 19 days. After the final administration, the serum glucose-
          fat metabolic parameters (levels of fasting blood glucose and fasting insulin, insulin resistance index), placental quality, placental
          permeability  [Evan’s  blue (EB)  content],  and  pathological  changes  in  placental  tissue  were  observed. The  activities  of  superoxide
          dismutase (SOD), the contents of malondialdehyde (MDA) and reduced glutathione (GSH), and the protein expressions of Sonic
                                                             Hh (Shh),  Patched-1 (Ptch1),  Smoothened (Smo)  and  Gli
             Δ 基金项目 南阳市科技计划项目(No.KJGG196);河南省社会科             family  zinc  finger-1 (Gli1)  in  placental  tissue  were  detected.
          学界联合会调研课题(No.SKL-2019-589)
                                                             RESULTS  Compared  with  the  control  group,  rats  in  the
             *第一作者 实验师,硕士。研究方向:妇幼保健。E-mail:HBB_
          666@126.com                                        model  group  showed  narrow  capillary  lumens,  perivascular


          中国药房  2024年第35卷第22期                                              China Pharmacy  2024 Vol. 35  No. 22    · 2763 ·
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