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赤芍内酯苷对早孕流产大鼠子宫内膜的作用
Effects of paeoniflorin on the endometrium of early pregnancy abortion rats
【摘要】 目的 探究赤芍内酯苷对早孕期血瘀流产大鼠子宫内膜血流状态与容受性的影响,并分析相关机制。方法 将150只大鼠按雌雄2∶1合笼交配,取成功妊娠的50只大鼠随机分为对照组、模型组及赤芍内酯苷低、中、高剂量组,每组10只。对照组不造模,其余4组均造早孕期血瘀流产大鼠模型,且赤芍内酯苷低、中和高剂量组大鼠从妊娠第1天起持续至第11天,分别灌胃给予赤芍内酯苷50、100、200 mg·kg-1·d-1,模型组及对照组同时间灌胃等量生理盐水,观察大鼠的一般情况。用小动物西门子彩色多普勒超声诊断仪检测动脉血流参数血管阻力指数(resistance index, RI)、搏动指数(resistance index, PI)。用免疫印迹法检测各组大鼠子宫内膜组织白血病抑制因子(leukaemia inhibitory factor, LIF)、同源框基因A10(homebox A10 gene, HOXA10)、黏蛋白1(mucin 1,MUC1)、血管生成素-1/内皮细胞TEK酪氨酸激酶2(Ang-1/Tie-2)轴蛋白Ang-1和Tie-2的表达水平。结果 与对照组比较,模型组大鼠子宫内膜血流动力学参数RI[(0.97±0.15) m·s-1vs.(0.36±0.05) m·s-1]、PI[(1.35±0.21) m·s-1vs.(0.56±0.09) m·s-1]及MUC1蛋白表达水平[(1.52±0.23)vs.(0.40±0.07)]升高,子宫内膜组织LIF[(0.37±0.06)vs.(1.56±0.23)]、OXA10[(0.26±0.04)vs.(1.37±0.20)]、Ang-1[(0.45±0.07)vs.(1.53±0.23)]和Tie-2[(0.50±0.08)vs.(1.43±0.21)]水平降低(P均<0.05);与模型组比较,赤芍内酯苷低、中和高剂量组大鼠子宫内膜血流动力学参数RI[(0.81±0.12)、(0.67±0.11)、(0.52±0.08) m·s-1vs.(0.37±0.0) m·s-1]、PI[(1.17±0.18)、(0.93±0.14)、(0.72±0.118) m·s-1vs.(1.35±0.21) m·s-1]及MUC1[(1.21±0.18)、(0.89±0.15)、(0.66±0.09)vs.(1.52±0.23)]水平降低,子宫内膜组织LIF[(0.56±0.08)、(0.88±0.13)、(1.23±0.19)vs.(0.37±0.06)]、HOXA10[(0.61±0.05)、(0.90±0.11)、(1.16±0.20)vs.(0.26±0.04)]、Ang-1[(0.62±0.09)、(0.96±0.15)、(1.30±0.19)vs.(0.45±0.07)]和Tie-2[(0.77±0.12)、(0.93±0.14)、(1.27±0.19)vs.(0.50±0.08)]水平升高(P均<0.05),呈剂量依赖性。结论 赤芍内酯苷能够改善早孕期血瘀流产大鼠子宫内膜血流状态与容受性,可能是通过上调Ang-1/Tie-2轴Ang-1和Tie-2的表达水平,增加子宫内膜血流灌注实现的。
【Abstract】 Objective To investigate the effect of paeoniflorin on endometrial blood flow and receptivity in early pregnancy rats with blood stasis abortion, and to analyze the related mechanism.Methods 150 rats were cultivated for copulation in cages according to the sex ratio of female to male 2∶1. The successful pregnant 50 rats were randomly divided into control group, model group and low, middle and high dose groups, with 10 rats in each group. Except for the control group, the other 4 groups were used to prepare the early pregnancy blood stasis abortion rat model. Paeoniflorin low-dose, medium-dose and high-dose groups were given paeoniflorin 50,100 and 200 mg·kg-1·d-1 by intragastric administration from the first day of pregnancy to the 11 th day of pregnancy. The rats in model group and control group were given intragastric administration of the same amount of normal saline at the same time, and the general condition of the rats was observed. The resistance index(RI) and pulsatility index(PI) of arterial blood flow parameters were measured by small animal Siemens color Doppler ultrasound system. The expression levels of leukaemia inhibitory factor(LIF),Homebox A10 gene(HOXA10),mucin 1(MUC1),human angiopoietin 1(Ang-1) and recombinant TEK tyrosine kinase endothelial 2(Tie-2) axis proteins in the endometrium of rats were detected by Western blot.Results Compared with the control group, the levels of endometrial hemodynamic parameters, RI [(0.97±0.15) vs.(0.36±0.05) m·s-1],the PI [(1.35±0.21) vs.(0.56±0.09) m·s-1],the MUC1 [(1.52±0.23) vs.(0.40±0.07)],the LIF [(0.37±0.06) vs.(1.56±0.23)],the HOXA10 [(0.26±0.04) vs.(1.37±0.20)], the Ang-1 [(0.45±0.07) vs.(1.53 ± 0.23)] and Tie-2 [(0.50±0.08) vs.(1.43±0.21)] decreased(P <0.05). Compared with the model group,the endometrial hemodynamic parameters in paeoniflorin low-dose,medium-dose and high-dose groups of RI [(0.81±0.12),(0.67±0.11),(0.52±0.08) m·s-1 vs.(0.37±0.0) m·s-1],PI [(1.17±0.18),(0.93±0.14),(0.72±0.118) m·s-1 vs.(1.35±0.21) m·s-1] and MUC1 [(1.21±0.18),(0.89±0.15),(0.66±0.09) vs.(1.52±0.23)] decreased,while the endometrial tissue of LIF [(0.56±0.08),(0.88±0.13),(1.23±0.19) vs.(0.37±0.06)],HOXA10 [(0.61±0.05),(0.90±0.11),(1.16±0.20) vs.(0.26±0.04)],Ang-1 [(0.62±0.09),(0.96±0.15),(1.30±0.19) vs.(0.45±0.07)] and Tie-2 [(0.77±0.12),(0.93±0.14),(1.27±0.19) vs.(0.50±0.08)] level increased in a dose-dependent manner(all P<0.05).Conclusion Paeoniflorin can improve endometrial blood flow and receptivity in rats with blood stasis and abortion during early pregnancy, possibly by up-regulating the expression levels of Ang-1 and Tie-2 in the Ang-1/Tie-2 axis,and by increasing the uterine endometrial perfusion.
【Key words】 paeoniflorin; early pregnancy blood stasis abortion; endometrium; blood flow state; receptivity; Ang-1/Tie-2 axles;
- 【文献出处】 西北药学杂志 ,Northwest Pharmaceutical Journal , 编辑部邮箱 ,2022年05期
- 【分类号】R285.5
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