The transcription of nonrepeated DNA sequences was measured by hybridization of RNA from neonatal and fetal mice to mouse DNA using three different techniques. The measurements indicate that a large part (about 70%) of the rapidly-labeled fetal RNA is transcribed from nonrepeated DNA sequences. It appears that more than 12% of the single-copy DNA sequences are represented in the RNA of newborn ...

Cell free fetal DNA (cff DNA) is apoptotic that shed from placenta and flows in maternal blood. This can be used as an indicative biomarker to rule out pregnancy associated complications. The objective of this study investigate the correlation concentration cff with intrauterine deaths. RHD gene (Rh blood group, D antigen) was marker for confirmation GAPDH (Glyceraldehyde-3-phosphate dehydrogen...

OBJECTIVE To assess the normal levels of free fetal DNA in maternal plasma through pregnancy compared with those in pregnancies complicated with placental dysfunction manifested by preeclampsia and/or fetal growth restriction. STUDY DESIGN Maternal blood samples from 138 singleton male pregnancies were divided into 3 groups; normal pregnancies (77), preeclampsia (49), and fetal growth restric...

BACKGROUND The discovery of fetal DNA in maternal plasma has opened up an approach for noninvasive prenatal diagnosis. Despite the rapid expansion in clinical applications, the molecular characteristics of plasma DNA in pregnant women remain unclear. METHODS We investigated the size distribution of plasma DNA in 34 nonpregnant women and 31 pregnant women, using a panel of quantitative PCR ass...

Since its introduction in the 1980s, non-invasive ultrasound technology has developed rapidly, replacing grainy images with high-resolution video of every heartbeat, yawn, and hiccup. In contrast, wholegenome sequencing of fetal DNA is truly in its infancy. The hurdles are numerous, involving the identification of a non-invasive technique to access fetal DNA and the ability to sequence the feta...

OBJECTIVES To evaluate the feasibility of non-invasive prenatal testing (NIPT) of maternal plasma samples collected from pregnant Chinese women in early gestation, between 8 + 0 and 12 + 6 weeks' gestation. METHODS In this pilot study, 212 women with high-risk pregnancies were recruited at a single Chinese Hospital. Fetal aneuploidies associated with chromosomes 21, 18, 13, X and Y were detec...

OBJECTIVES To assess the public health consequences of fetal cell line manufactured vaccines that contain residual human fetal DNA fragments utilizing laboratory and ecological approaches including statistics, molecular biology and genomics. METHOD MMR coverage and autism disorder or autism spectrum disorder prevalence data for Norway, Sweden and the UK were obtained from public and governmen...

Prenatal diagnosis (PD) is available for pregnancies at risk of monogenic disorders. However, PD requires the use of invasive obstetric techniques for fetal-sample collection and therefore, involves a risk of fetal loss. Circulating fetal DNA in the maternal bloodstream is being used to perform non-invasive prenatal diagnosis (NIPD). NIPD is a challenging discipline because of the biological fe...