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妊高征中胎盘血管内皮生长因子的表达及其与胎盘释放血管活性物质的关系

来源:免疫学杂志
摘要:妊高征中胎盘血管内皮生长因子的表达及其与胎盘释放血管活性物质的关系免疫学杂志2001年第1期第17卷临床免疫学作者:刘霞李力单位:第三军医大学大坪医院妇产科,重庆400042关键词:妊娠高血压综合征。血管内皮生长因子。胎盘。血栓素A2摘要:目的探讨胎盘血管内皮生长因子(VEGF)在妊高征中的......

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妊高征中胎盘血管内皮生长因子的表达及其与胎盘释放血管活性物质的关系

免疫学杂志 2001年第1期第17卷 临床免疫学

作者:刘霞 李力

单位:第三军医大学大坪医院妇产科, 重庆 400042

关键词:妊娠高血压综合征;血管内皮生长因子;胎盘;前列环素I2;血栓素A2

  摘 要:目的 探讨胎盘血管内皮生长因子(VEGF)在妊高征中的表达及其与胎盘释放前列环素(PGI2)、血栓素A2(TXA2)的关系。方法 分别采用蛋白免疫印渍(Westernblot)和放免技术测定25例孕晚期正常妊娠(NLP)及25例妊高征(PIH)患者的胎盘VEGF表达及胎盘和血浆中的PGI2、TXA2水平。结果 与NLP比较,PIH组胎盘VEGF的表达显著降低(P<0.01);胎盘组织及血浆中PGI2水平及PGI2/TXA2显著下降(P<0.01),TXA2水平显著升高(P<0.01);PIH中胎盘VEGF表达与其产生的PGI2、PGI2/TXA2呈显著正相关(P<0.01),与TXA2呈显著负相关(P<0.01),并与临床收缩期血压(P<0.01)和舒张期血压(P<0.05)呈显著负相关。结论 胎盘VEGF下降与妊高征患者血压升高密切相关,可能是通过下调胎盘及母血PGI2/TXA2参与了这一过程。

  分类号:R714.24 文献标识码:A

  文章编号:1000-8861(2001)01-0043-04

Expression of vascular endothelial growth factor and its relationship with release of vascular active substances in placentae of patients with pregnancy induced hypertension

LIU Xia(Department of Gynecologic and Obstetric,Daping Hospital, the Third Military Medical College,Chongqing 400042,China)

  LI Li(Department of Gynecologic and Obstetric,Daping Hospital, the Third Military Medical College,Chongqing 400042,China)

  Abstract:Objective To investigate the expression of placental vascular endothelial growth factor (VEGF) and its relationship with placental release of prostacyclin I2 (PGI2) and thromboxane A2(TXA2) in patients with pregnancy induced hypertension (PIH).Methods  Twenty-five patients with PIH and twenty-five normal late pregnant (NLP) women in the third trimester were observed in this study. The expression of VEGF protein in placenta, the plasma and placental homogenate levels of PGI2 and TXA2 were determined by Western blot and radioimmunoassay respectively. Results  Compared with NLP, the expression of placental VEGF protein was significantly decreased (P<0.01). Plasma and placental homogenate levels of PGI2, PGI2/TXA2 in patients with PIH were significantly decreased (P<0.01) while TXA2 level was increased (P<0.01). There was a significant positive correlation between placental VEGF and PGI2 and PGI2/TXA2 (P<0.01). A significant negative correlation was found between placental VEGF and TXA2 (P<0.01), systolic (P<0.01)and diastole blood pressure(P<0.05). Conclusion  It is suggested that the reduction of placental VEGF may down-regulate local PGI2/TXA2, resulting in the imbalance of maternal PGI2/TXA2 and dysfunction of endothelial cell.

  Keywords:pregnancy induced hypertension; vascular endothelial growth factor; placenta; prostacyclin I2; thromboxane A2

  作者简介:刘霞(1971-),女,河北保定市人,住院医师,博士生,主要从事妊高征发病机制的研究。Tel: 023-68757731;E-mail:LiuXiaLx@163.net参考文献:

  [1]乐 杰.妇产科学[M].第4版.北京:人民卫生出版社,1997.113—120.

  [2]Lyall F, Young A, Boswell F,et al. Placental expression of vascular endothelial growth factor in placentae from pregnancies complicated by pre-eclampsia and intrauterine growth restriction does not support placental hypoxia at delivery[J]. Placenta,1997, 18(4): 269-276.

  [3]Rodgers GM, Taylor RN, Roberts JM. Preeclampsia is associated with a serum factor cytotoxic to human endothelial cells[J]. Am J Obstet Gynecol, 1988, 159(4):908-912.

  [4]Mills JL, Dersimonian R, Raymond E,et al. Prostacyclin and thromboxane changes predicting clinical onset of preeclampsia: a multicenter prospective study [J]. JAMA, 1999, 282(4): 356-362.

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  [6]Wheeler-Jones C, Abu-Ghazaleh R, Cospedal R,et al. Vascular endothelial growth factor stimulates prostacyclin production and activation of cytosolic phospholipase A2 in endothelial cells via p42/p44 mitogen-activated protein kinase[J]. FEBS Lett, 1997, 420(1): 28-32.

  [7]Hood JD, Meininger CJ, Ziche M,et al. VEGF upregulates ecNOS message, protein and NO production in human endothelial cells[J]. Am J Physiol, 1998, 274(3pt2): H1 054-1 058.

  [8]Ziyyat A, Zhang BL, Benzoni D. Interactions be-tween nitric oxide and prostanoids in isolated perfused kidneys of the rat[J]. Br J Pharmacol, 1996, 119(2): 388-392.

  [9]Myatt L, Brewer AS, Langdon C,et al. Attenuation of the vasoconstrictor effects of thromboxane and endothelin by nitric oxide in the human fetal-placental circulation[J]. Am J Obstet Gynecol, 1992, 166(1 pt1): 224-230.

  [10]Ahmed A, Dunk C, Kniss D, et al. Role of VEGF receptor-1 (Flt-1) in mediating calcium-dependent nitric oxide release and limiting DNA synthesis in human trophoblast cells[J]. Lab Invest, 1997, 76(6): 779-791.

  [11]Yang R, Thomas GR, Bunting S,et al. Effects of vascular endothelial growth factor on hemodynamics and cardiac performance[J]. J Cardiovasc Pharmacol, 1996, 27(6): 838-844.

收稿日期:2000年9月22日

修稿日期:2000年11月6日

出版日期:2001年1月15日


作者: 风清扬 2009-2-21
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