نتایج جستجو برای: fetal dna
تعداد نتایج: 588711 فیلتر نتایج به سال:
Fetal breathing movements play an important role in normal fetal lung growth. We have previously shown that an intermittent mechanical strain regimen (60 cycles/min, 15 min/h), simulating normal fetal breathing movements, stimulated growth of mixed fetal rat lung cells in organotypic culture. In the present study, we examined the individual responses of the two major fetal lung cell types, fibr...
Attempts were made to detect human parvovirus B19-DNA by in situ hybridisation and the polymerase chain reaction in placental and fetal tissues from a case of intrauterine fetal death. In the in situ hybridisation experiments radioactive and non-radioactive (labelled with 2-acetyl-aminofluorene, AAF) DNA probes were used. B19-DNA was detectable in paraffin wax embedded fetal tissue from the liv...
The discovery of cell-free DNA fetal (cff DNA) in maternal plasma during pregnancy provides a novel perspective for the development of non‑invasive prenatal diagnosis (NIPD). Against the background of maternal DNA, the use of the relatively low concentration of cff DNA is limited in NIPD. Therefore, in order to overcome the complication of the background of maternal DNA and expand the scope of ...
Increased fetal DNA concentrations in the plasma of pregnant women carrying fetuses with trisomy 21.
BACKGROUND The recent discovery of the presence of circulating cell-free fetal DNA in maternal plasma opens up new prenatal diagnostic applications and provides new avenues for clinical investigation. It is of research and potential diagnostic interest to determine whether fetal trisomy 21 may be associated with quantitative abnormalities of circulating fetal DNA in maternal plasma. METHODS M...
BACKGROUND We recently demonstrated that the promoter of the RASSF1A gene is hypermethylated in the placenta and hypomethylated in maternal blood cells. This methylation pattern allows the use of methylation-sensitive restriction enzyme digestion for detecting the placental-derived hypermethylated RASSF1A sequences in maternal plasma. METHODS We performed real-time PCR after methylation-sensi...
Noninvasive prenatal testing (NIPT) using sequencing of fetal cell-free DNA from maternal plasma has enabled accurate prenatal diagnosis of aneuploidy and become increasingly accepted in clinical practice. We investigated whether NIPT using semiconductor sequencing platform (SSP) could reliably detect subchromosomal deletions/duplications in women carrying high-risk fetuses. We first showed tha...
risk of HDFN, which can cause fetal anemia, hydrops, and intrauterine fetal death. Babies born with HDFN are at significant risk of neonatal morbidity and mortality [1,2]. Prenatal detection of the fetal RhD status in a pregnant woman with RhD-negative provides useful information for predicting the risk of HDFN and Noninvasive fetal RHD genotyping using cell-free fetal DNA incorporating fetal R...
BACKGROUND The discovery of circulating fetal DNA in maternal blood led to the discovery of new strategies to perform noninvasive testing for prenatal diagnosis. OBJECTIVE The purpose of the study was to detect fetal aneuploidy at chromosomes 13, 18, 21, X, and Y by analysis of fetal cell-free DNA from maternal blood, without endangering pregnancy. MATERIALS AND METHODS This retrospective s...
To define diagnostic and prognostic markers of parvovirus B19 (B19V) fetal infection, two groups were investigated: 1) pregnant women with specific symptoms or contacts with symptomatic households (n=37); 2) mothers with pathological ultrasound findings and the relevant fetus at the time of prenatal diagnosis (n=16). In the first group, diagnosis of B19V infection was achieved using IgM detecti...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید