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DOI: 10.1369/jhc.4A6400.2005
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Journal of Histochemistry and Cytochemistry
Volume 53 (3): 307-314, 2005
Copyright ©The Histochemical Society, Inc.

Application of Fetal DNA Detection in Maternal Plasma : A Prenatal Diagnosis Unit Experience

Cristina González-González, Maria Garcia-Hoyos, M. Jose Trujillo-Tiebas, Isabel Lorda-Sanchez, Marta Rodríguez de Alba, Fernando Infantes, Jesus Gallego, Joaquín Diaz-Recasens, Carmen Ayuso and Carmen Ramos

Department of Genetics (CGG,MGH,MJTT,ILS,MRdA,FI,JG,CA,CR) and Department of Gynecology and Obstetrics (JDR), Fundación Jiménez Díaz, Madrid, Spain

Correspondence to: Cristina González-González, Fundacion Jimenez Diaz, Genetica, Avda Reyes Catolicos 2, Madrid, 28040, Spain. E-mail: cgonzalezg{at}megalab.es

Non-invasive prenatal diagnosis tests based on the analysis of fetal DNA in maternal plasma have potential to be a safer alternative to invasive methods. So far, different studies have shown mainly fetal sex, fetal RhD, and quantitative variations of fetal DNA during gestation with fetal chromosomal anomalies or gestations at risk for preeclampsia. The objective of our research was to evaluate the use of fetal DNA in maternal plasma for clinical application. In our study, we have established the methodology needed for the analysis of fetal DNA. Different methods were used, according to the requirements of the assay. We have used quantitative fluorescent polymerase chain reaction (QF-PCR) to perform fetal sex detection with 90% sensitivity. The same technique permitted the detection of fetal DNA from the 10th week of gestation to hours after delivery. We have successfully carried out the diagnosis of two inherited disorders, cystic fibrosis (conventional PCR and restriction analysis) and Huntington disease (QF-PCR). Ninety percent of the cases studied for fetal RhD by real-time PCR were correctly diagnosed. The detection of fetal DNA sequences is a reality and could reduce the risk of invasive techniques for certain fetal disorders in the near future. (J Histochem Cytochem 53:307–314, 2005)

Key Words: fetal DNA • maternal plasma • non-invasive diagnosis • QF-PCR • real-time PCR • cystic fibrosis • Huntington disease • fetal RhD


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[Abstract] [Full Text] [PDF]



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