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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
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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 ·