肿瘤坏死因子α与妊娠高血压综合征发病关系的研究

探讨肿瘤坏死因子α在妊娠高血压综合征发病中的作用。方法对４１例妊高征患者（妊高征组）和１７例正常妊娠妇女（正常妊娠组）进行了下列研究：（１）测定血浆中ＴＮＦα水平，观察胎盘血管内皮细胞的形态学变化；（２）利用其血清对离体培养的脐血管内皮细胞作用，观察其损情表现；（３）利用４００Ｕ／ｍｌ的人重组ＴＮＦα对离体培养的脐血管内皮细胞作用，比较ＴＮＦα和妊娠高征孕妇血清对内皮细胞的损伤作用。结果（１）妊娠

Role of tumor necrosis factor -

OBJECTIVE: To investigate the role of tumor necrosis factor-alpha (TNFalpha) in the pathogenesis of pregnancy induced hypertension (PIH) by damaging endothelial cells. METHODS: 41 patients with PIH and 17 healthy pregnant women were studied. The concentration of TNFalpha in maternal plasma was measured by sensitive radioimmunoassay. The morphology of endothelial cells of placental blood vessels was observed. Endothelial cells were incubated in the presence of TNFalpha (400 U/ml) and sera (30% vol/vol) from PIH women and normal pregnant women to observe their growth and shape. RESULTS: Maternal plasma TNFalpha level in PIH was 2.29 microgram/L +/- 0.51 microgram/L, higher than that in normal pregnancy (the latter was 1.73 microgram/L +/- 0.25 microgram/L, t = 5.60, P < 0.01). The endothelial cells of placental blood vessels in PIH revealed morphologic damages. Both sera of PIH women and TNFalpha were cytotoxic to endothelial cells in culture, including inhibition of the proliferation and morphologic changes of the cells. CONCLUSION: Damage of the endothelial cells of placental blood vessels is associated with the abnormal increase in the maternal blood TNFalpha. Sera of PIH women can damage the endothelial cells in culture and this effect is also associated with TNFalpha.