目的探讨与羊水细胞染色体核型分析相比,荧光原位杂交(fluorescence in situ hybridization,FISH)技术在产前诊断中的优缺点及临床应用价值。方法对2009年1月至2010年2月华中科技大学同济医学院附属同济医院208例孕妇抽取羊水体外培养...目的探讨与羊水细胞染色体核型分析相比,荧光原位杂交(fluorescence in situ hybridization,FISH)技术在产前诊断中的优缺点及临床应用价值。方法对2009年1月至2010年2月华中科技大学同济医学院附属同济医院208例孕妇抽取羊水体外培养后进行染色体核型分析,其中53例同时应用FISH技术直接对间期核细胞进行13、18、21、X、Y的染色体数目检测。结果 (1)208例中,共完成羊水细胞核型分析199例,诊断成功率为95.7%(199/208),其中异常染色体核型占8.04%(16/199),报告时间平均为(22.49±6.12)d。(2)同时进行核型分析和FISH检测的53例患者,核型分析及FISH诊断成功率均为100%,共发现染色体异常4例,占7.55%(4/53);其中结构异常3例(经核型分析诊断)、数目异常1例(核型分析及FISH均诊断成功)。(3)在染色体数目的诊断上,53例的FISH检测与染色体核型分析的一致率为100%,平均报告时间为2～4d。结论 (1)FISH技术应用于产前诊断染色体数目异常,成功率高,准确可靠,较常规核型分析方法有效缩短报告时间。(2)对于可能存在染色体结构异常的患者,单纯使用FISH将发生漏诊。(3)FISH不能完全替代常规染色体核型分析,疑有染色体结构异常者,必须同时行羊水细胞染色体核型分析。展开更多
To investigate the expression of osteopontin （OPN） and its receptor integrin αvβ3 in the placental tissue from pregnant women complicated with preeclampsia, the expression of OPN and αvβ3 in the placenta of the ...To investigate the expression of osteopontin （OPN） and its receptor integrin αvβ3 in the placental tissue from pregnant women complicated with preeclampsia, the expression of OPN and αvβ3 in the placenta of the pregnant women with preeclampsia and healthy pregnant women was detected by immunohistochemistry, Western blotting and RT-PCR. Our results showed that OPN and αvβ3 protein were expressed in the placenta from normal pregnant woman and those with preeclampsia. OPN was located in the placental syncytiotrophoblasts and the cytoplasm of capillary endothelial cells and integrin αvβ3 was mainly expressed on the surface of trophoblast cells. Expression of OPN and integrin αvβ3 in the placental tissue from preeclampsia subjects was significantly lower than that from the control group （P〈0.05）. Compared with the control group, expression of OPN in the placental tissue from preeclampsia group was significantly lower （P〈0.05） but there was no significant difference in the expression of αv and β3 between the preeclampsia group and the controls. It is concluded that OPN and its receptor integrin αvβ3 may be involved in the pathogenesis of preeclampsia.展开更多
基金supported by a grant from Shenzhen Municipal Science and Technology Program (No 200802107)a grant for medical research programs from the Health Department of Guangdong Province (No A2009593)
文摘To investigate the expression of osteopontin （OPN） and its receptor integrin αvβ3 in the placental tissue from pregnant women complicated with preeclampsia, the expression of OPN and αvβ3 in the placenta of the pregnant women with preeclampsia and healthy pregnant women was detected by immunohistochemistry, Western blotting and RT-PCR. Our results showed that OPN and αvβ3 protein were expressed in the placenta from normal pregnant woman and those with preeclampsia. OPN was located in the placental syncytiotrophoblasts and the cytoplasm of capillary endothelial cells and integrin αvβ3 was mainly expressed on the surface of trophoblast cells. Expression of OPN and integrin αvβ3 in the placental tissue from preeclampsia subjects was significantly lower than that from the control group （P〈0.05）. Compared with the control group, expression of OPN in the placental tissue from preeclampsia group was significantly lower （P〈0.05） but there was no significant difference in the expression of αv and β3 between the preeclampsia group and the controls. It is concluded that OPN and its receptor integrin αvβ3 may be involved in the pathogenesis of preeclampsia.
