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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Chen, Xi Xiong, Likuan Zeng, Ting Xiao, Kelin Huang, Yanping Guo, Hui Ren, Jinghui |
| Description | Country affiliation: China Author Affiliation: Chen X ( Department of Center Laboratory, Baoan Maternal and Child Health Hospital, Shenzhen, China.); Xiong L ( Department of Center Laboratory, Baoan Maternal and Child Health Hospital, Shenzhen, China. Electronic address: xionglk@sina.cn.); Zeng T ( Department of Center Laboratory, Baoan Maternal and Child Health Hospital, Shenzhen, China.); Xiao K ( Department of Center Laboratory, Baoan Maternal and Child Health Hospital, Shenzhen, China.); Huang Y ( Department of Center Laboratory, Baoan Maternal and Child Health Hospital, Shenzhen, China.); Guo H ( Department of Prenatal Diagnosis Center, 2(nd) Clinical Medical College of Jinan University, Shenzhen, China.); Ren J ( Department of Prenatal Diagnosis Center, 2(nd) Clinical Medical College of Jinan University, Shenzhen, China.) |
| Abstract | BACKGROUND: Previous reports have shown that the ERG gene is hypermethylated in the placenta and hypomethylated in maternal blood cells. In this study, we explore the feasibility of hypermethylated ERG as a cell-free fetal (cff) DNA biomarker for non-invasive prenatal testing (NIPT) of Down syndrome. METHODS: We randomly selected 90 healthy pregnant women, including 30 cases at each trimester of pregnancy. In addition, 15 pregnant women were recruited as the case group whose fetuses had been confirmed to have trisomy 21 by amniotic fluid analysis at 18th to 26th week gestation. Using HpaII, MspÐ to digest cell-free maternal plasma DNA, we performed SYBR Green PCR to detect methylated sites of ERG sequences, and analyzed the concentrations of cff DNA in maternal plasma in different gestational trimesters and the case group. RESULTS: The ERG median concentrations of the maternal plasma after Hpa II digestion (LG copies/ml) in first, second and third-trimesters were 5.38, 6.10, and 7.04, respectively (Kruskal-Wallis, P<0.01); and that in the trisomy 21 case group was 6.85, which was higher than the second-trimester (Mann-Whitney, P<0.01). CONCLUSIONS: The study demonstrated that ERG gene is hypermethylated in cff DNA but hypomethylated in maternal DNA; and the median concentration of ERG gene in the trisomy 21 case group is higher than that in the gestational trimester matched normal group. ERG gene, as a fetal DNA biomarker, may be useful for NIPT of Down syndrome. |
| File Format | HTM / HTML |
| ISSN | 00098981 |
| Volume Number | 444 |
| e-ISSN | 18733492 |
| Journal | Clinica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-04-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Clinical Chemistry Discipline Laboratory Medicine Dna Methylation Genetics Dna Analysis Metabolism Down Syndrome Diagnosis Prenatal Diagnosis Trans-activators Female Genetic Markers Humans Pregnancy Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Biochemistry (medical) Clinical Biochemistry Biochemistry |
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