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中华妇幼临床医学杂志(电子版) ›› 2007, Vol. 03 ›› Issue (01) : 10 -f3. doi: 10.3877/cma.j.issn.1673-5250.2007.01.104

论著

孕妇血清妊娠相关血浆蛋白-A水平及其在三体综合征产前筛查中的应用
吴云萍, 朱宝生, 焦存仙, 董旭东, 朱姝, 史纪芳, 刘娟, 苏洁   
  1. 云南省第一人民医院遗传诊断中心(昆明,650033)
    云南省第一人民医院产科(昆明,650033)
  • 出版日期:2007-02-01
  • 基金资助:
    云南省自然科学重点资助项目(2003C0018Z)

The application of maternal pregnancy-associated plasma protein-A in prenatal screening

Yun-ping WU, Bao-sheng ZHU, Cun-xian JIAO, xu-dong DONG, Zhu ZHU, Ji-fang SHI, Juan LIU, Jie SU   

  1. Genetic Diagnosis Center, The First People's Hospital of Yunnan Province. Kunming, 650032, China
  • Published:2007-02-01
引用本文:

吴云萍, 朱宝生, 焦存仙, 董旭东, 朱姝, 史纪芳, 刘娟, 苏洁. 孕妇血清妊娠相关血浆蛋白-A水平及其在三体综合征产前筛查中的应用[J]. 中华妇幼临床医学杂志(电子版), 2007, 03(01): 10-f3.

Yun-ping WU, Bao-sheng ZHU, Cun-xian JIAO, xu-dong DONG, Zhu ZHU, Ji-fang SHI, Juan LIU, Jie SU. The application of maternal pregnancy-associated plasma protein-A in prenatal screening[J]. Chinese Journal of Obstetrics & Gynecology and Pediatrics(Electronic Edition), 2007, 03(01): 10-f3.

目的

回顾性分析妊娠相关血浆蛋白-A(pregnancy-associated plasma protein-A,PAPP-A)水平与妊娠结局的关系,探讨PAPP-A水平在三体综合征产前筛查中的应用价值,建立昆明地区单胎妊娠孕妇妊娠相关PAPP-A的正常参考值。

方法

采用时间分辨荧光免疫检测技术对2 585例6〜40孕周的孕妇血清PAPP-A含量进行检测。

结果

本地区正常单胎妊娠孕妇9〜13孕周血清PAPP-A水平明显高于高加索人群(P<0. 001);双胎妊娠孕妇的PAPP-A为同孕周单胎妊娠孕妇的1. 79倍。在本组8例三体综合征胎儿妊娠的孕妇中,孕期血清PAPP-A中位数倍数(multiples of the median,MoM)的平均值为0. 72 MoM。

结论

有必要建立本地区正常孕妇血清PAPP-A正常中位数值,以提高产前筛查的准确性;妊娠18三体综合征、唐氏综合征胎儿的孕妇,在15〜20孕周时,血清PAPP-A趋于正常。随着孕周的进展,PAPP-A又明显降低,与早孕期表现相似。18三体综合征妊娠者比唐氏综合征妊娠者的PAPP-A降低更为显著。

Objective

To establish the normal referential data of maternal serum pregnancy-associated plasma protein-A (PAPP-A) level in singleton pregnancy in Kunming region by reviewing the relationship of maternal serum PAPP-A level and pregnant outcome in prenatal screening program.

Method

To detect the PAPP-A levels of serum samples from 2 585 cases of normal singleton pregnancy from 6 gestational weeks to 40 weeks using dissociation enhanced lanthanide fluoroimmunoassay(DELFIA).

Results

The medians of maternal serum PAPP-A of Chinese population in Kunming region were significantly higher than those of the Caucasian population in 9〜13 gestational weeks, respectively. The average median of PAPP-A in twin pregnancy was 1. 79 times compared to the median of singleton pregnancy in Kunming region (P<0. 01). In 8 cases of trisomy pregnancy, the mean PAPP-A MoM in the second trimester was 0. 72 MoM.

Conclusion

It is necessary to establish local referential normal PAPP-A median of local region to improve the veracity of prenatal screening. The maternal serum PAPP-A level of trisomy pregnancy in 15〜20 gestational weeks intended to close the normal level, but significantly reduced as the pregnancy progress. The PAPP-A level in 18 trisomy pregnancies was much lower than that of Down's syndrome pregnancies.

图1.本地区正常孕妇孕6~40周PAPP-A中位数
图2.本地区人群孕9~13周PAPP-A中位数拟合曲线
图3.本地区正常人群与高加索人群孕9~13周PAPP-A中位数
图4.正常双胞胎妊娠孕妇PAPP-A MoM值
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