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Apoptosis gene expression profiling of placental trophoblast cells in patients with pregnancy induced hypertension
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY
- Issue:
- 10
- DOI:
- 10.3760/j.issn:0529-567X.2003.10.004
- Key Word:
- 妊娠并发症,心血管;高血压;胎盘;细胞凋亡;基因表达谱
Abstract： 目的采用基因芯片技术筛查妊娠高血压综合征(妊高征)患者胎盘滋养细胞凋亡基因的差异表达,探讨细胞凋亡与妊高征发病的关系.方法妊高征患者20例为妊高征组,正常孕妇10例为对照组.采用脱氧核糖核苷酸末端转移酶介导的缺口末端标记(TUNEL)方法检测两组孕妇胎盘组织滋养细胞凋亡情况.同时采用上海博星公司生产的基因芯片进行凋亡基因表达谱的筛查.判断基因差异表达的标准:(1)cy5(妊高征组)/cy3(对照组)的自然对数绝对值＞0.69,cy3与cy5的信号相差2倍以上.(2)cy3或cy5、cy3和cy5的信号值其中之一必须＞800.结果 (1)TUNEL检测显示,每10 000 μm2绒毛面积中滋养细胞凋亡数,妊高征组为1.584个,对照组为0.032个,两组比较,差异有极显著性(P<0.01).(2)基因芯片筛查有差异表达的凋亡基因10个,占基因芯片筛查凋亡基因总数的5%.妊高征组胎盘组织中的凋亡基因表达均明显下调,即cy5/cy3比值<1.其中包括具有明显抗凋亡作用的SFRP2、IAP2、DHCY24及ATPIA1基因.结论妊高征患者胎盘滋养细胞存在显著的凋亡现象,具有抗凋亡作用的基因表达明显下调,将可能导致胎盘滋养细胞凋亡,从而导致妊高征发病.
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