摘要
目的探讨转录因子 GATA-3、T-bet 在原因不明复发性流产发病中的作用。方法采用原位杂交方法,检测20例原因不明复发性流产患者(流产组)和20例正常妊娠妇女(正常妊娠组)蜕膜组织中1型辅助性 T 细胞(Th1)特异性转录因子 T-bet 和2型辅助性 T 细胞(Th2)特异性转录因子 GATA-3的 mRNA 表达水平。结果 (1)GATA-3:蜕膜组织中每高倍视野平均 GATA-3阳性细胞数流产组为(25±16)个,正常妊娠组为(38±16)个,两组比较,差异有统计学意义(P<0.05)。(2)T-bet:蜕膜组织中每高倍视野平均 T-bet 阳性细胞数流产组为(59±17)个,正常妊娠组为(46±18)个,两组比较,差异也有统计学意义(P<0.05)。(3)两组妇女蜕膜组织中 GATA-3 mRNA 与 T-betmRNA 的表达水平呈负相关关系(r=-0.55,P<0.01)。结论原因不明复发性流产患者蜕膜组织中 T-bet 表达占优势,GATA-3的表达受抑制,可能诱导了母胎界面 Th1/Th2平衡向 Th1偏移,从而使胚胎遭受免疫攻击而发生流产。
Objective To investigate the roles of transcription factor GATA-3 and T-bet at the fetalmaternal interface in the pathogenesis of unexplained recurrent spontaneous abortion (URSA). Methods The expression of GATA-3 and T-bet mRNA was examined by in situ hybridization. Decidua was obtained from 20 women with URSA and 20 normal pregnant (NP) women. Results ( 1 ) The number of GATA-3 positive cells per high power field in women with URSA (25 ± 16) was significantly lower than those in NP women( 38 ±16) (P〈0.05). (2) The number of T-bet positive ceils per high power field in women with URSA (59 ± 17) was significantly higher than those in NP women (46 ±18) (P〈0. 05). (3) Numbers of cells expressing GATA-3 mRNA correlated significantly with T-bet mRNA positive cell numbers in decidua ( r = - 0. 55,P 〈 0. 01 ). Conclusions The results demonstrate that upregulated expression of T-bet and downregulated expression of GATA-3 are found in the decidua of women with URSA. Imbalance of GATA-3/ T-bet transcription factors might interfere with type 1 helper T cell ( Th1 )/type 2 helper T cell ( Th2 ) differentiation at the fetal-maternal interface and cause URSA.
出处
《中华妇产科杂志》
CAS
CSCD
北大核心
2007年第2期96-98,共3页
Chinese Journal of Obstetrics and Gynecology