基于Gadd45α-p38MAPK通路研究葛根素对子痫前期大鼠胎盘氧化应激的影响及作用机制

被引:4
|
作者
王锋
徐静
刘晴
崔利娜
付秀虹
机构
[1] 漯河市中心医院妇产科
关键词
子痫前期; 葛根素; 氧化应激;
D O I
10.13748/j.cnki.issn1007-7693.2022.16.007
中图分类号
R285.5 [中药实验药理];
学科分类号
摘要
目的 探讨葛根素(puerarin,Pue)通过Gadd45α-p38MAPK通路对子痫前期大鼠的影响及作用机制。方法 孕鼠随机分为对照组、模型组、Pue低剂量组、Pue高剂量组、阳性药物组。除对照组外,其余各组自孕7 d开始,皮下注射L-精氨酸甲酯(L-argininemethylester,L-NAME)诱导子痫前期。孕14d开始,Pue低剂量组、Pue高剂量组分别按40,80 mg·kg–1体质量腹腔注射Pue注射液,阳性药物组按80 mg·kg–1体质量腹腔注射硫酸镁,对照组和模型组腹腔注射等量生理盐水。分别于孕13,17,21 d测量大鼠尾动脉压和24 h尿蛋白;称取胎盘质量和仔鼠体质量;检测胎盘组织中活性氧(reactiveoxygenspecies,ROS)、丙二醛(malondialdehyde,MDA)和一氧化氮(nitricoxide,NO)浓度;Westernblotting检测胎盘组织相关蛋白表达。结果 与模型组比较,Pue低剂量组、Pue高剂量组和阳性药物组孕17,21 d尾动脉压和24 h尿蛋白含量、胎盘组织中ROS、MDA水平降低,胎盘质量、胎盘组织中NO水平升高,胎盘组织中Gadd45α、p-p38MAPK蛋白相对表达量降低(P<0.05)。结论 Pue对子痫前期大鼠具有降血压作用,可减少氧化应激损伤,改善相关症状,可能通过抑制Gadd45α/p38MAPK信号通路发挥作用。
引用
收藏
页码:2090 / 2095
页数:6
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