Abstract:
OBJECTIVE:To test the hypothesis that free fetal DNA (ffDNA) circulating in maternal plasma originates mainly from the placenta we studied ffDNA levels in anembryonic pregnancies. METHODS:Maternal blood samples were collected from 15 normal first-trimester pregnancies in which fetal sex was subsequently determined and nine patients with a diagnosis of anembryonic gestation (AG). The Y chromosome DYS14 gene was quantified by real-time quantitative PCR (RT-PCR) for the determination of fetal sex in both plasma and chorionic tissue samples. Fetal sex in chorionic tissue samples was also determined using quantitative fluorescence PCR (QF-PCR). RESULTS:The correct sex result was obtained from maternal plasma in all. Four AG pregnancies were female (DYS14 negative) results. In five of the AG cases, the chorionic tissue was found to be male (by both QF-PCR and RT-PCR which agreed) and positive male signal was found in maternal plasma by RT-PCR. There was no statistical difference between median free fetal DNA concentration in plasma between the AG male cases (148.3 GE/mL) and controls (145.8 GE/mL). CONCLUSION:Since ffDNA levels are normal in pregnancies without a fetus, the data support the hypothesis that the trophoblastic cells are the major source ffDNA in maternal plasma.
journal_name
Prenat Diagnjournal_title
Prenatal diagnosisauthors
Alberry M,Maddocks D,Jones M,Abdel Hadi M,Abdel-Fattah S,Avent N,Soothill PWdoi
10.1002/pd.1700subject
Has Abstractpub_date
2007-05-01 00:00:00pages
415-8issue
5eissn
0197-3851issn
1097-0223journal_volume
27pub_type
杂志文章abstract::Chromosomal mosaicism in amniotic fluid cells poses a serious dilemma in prenatal diagnosis since the observation may represent: (1) pseudomosaicism--an inconsequential tissue culture artefact; or (2) true mosaicism--occurring in approximately 0.20 per cent of amniocenteses with a significant impact on pregnancy outco...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970090803
更新日期:1989-08-01 00:00:00
abstract:OBJECTIVE:To evaluate the population parameters applied to the calculation of risk for Down syndrome (DS) in the first trimester screening (FTS) and the comparison of performance obtained including or excluding maternal age from the mathematical algorithm. METHODS:Three different calculation engines for prenatal risk ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.2937
更新日期:2012-03-01 00:00:00
abstract:OBJECTIVE:Hirschsprung disease (HD) is a rare gastrointestinal disorder. Our aim was to study the prenatal ultrasound findings of children who were diagnosed with HD after birth. METHODS:The study population included children who suffered from HD between 1990 and 2008. Data of anomaly scan findings in prenatal ultraso...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.4595
更新日期:2015-07-01 00:00:00
abstract::Prenatal genetic diagnosis provides information for pregnancy and perinatal decision-making and management. In several small series, prenatal whole exome sequencing (WES) approaches have identified genetic diagnoses when conventional tests (karyotype and microarray) were not diagnostic. Here, we review published prena...
journal_title:Prenatal diagnosis
pub_type: 杂志文章,评审
doi:10.1002/pd.5102
更新日期:2018-01-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to establish the frequency and associations of single umbilical artery (SUA) diagnosed until the first vs second or third trimester. METHODS:A retrospective cohort study was conducted on singleton pregnancies at a tertiary perinatal center. All women underwent both the first and se...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.5471
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVE:To evaluate decision analysis as a technique to facilitate women's decision-making about prenatal diagnosis for Down syndrome using measures of effective decision-making. DESIGN:Randomised controlled trial in a UK hospital's prenatal diagnosis clinic. INTERVENTION:Routine versus routine consultation structu...
journal_title:Prenatal diagnosis
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/pd.851
更新日期:2004-04-01 00:00:00
abstract:OBJECTIVE:Evaluate patient choices and outcomes following positive cfDNA. METHOD:Retrospective cohort study of women with positive cfDNA through two academic centers between March 2012 and December 2014. Patients were screened based on ACOG indications. Medical records reviewed for counseling, ultrasound findings, dia...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.4805
更新日期:2016-05-01 00:00:00
abstract::Haemolytic disease of the fetus and newborn (HDFN) due to red cell alloimmunization was a significant cause of fetal and neonatal morbidity and mortality until the introduction of anti-D immunoglobulin, which has dramatically changed the incidence of the disease. However, it is still a major problem in affected pregna...
journal_title:Prenatal diagnosis
pub_type: 杂志文章,评审
doi:10.1002/pd.2551
更新日期:2010-07-01 00:00:00
abstract::Operator experience is considered to influence the safety and success of medical procedures. We performed a retrospective survey to assess learning curves in chorionic villus sampling (CVS). Data of 2081 consecutive women, in whom CVS was carried out in a tertiary care university hospital for prenatal diagnosis, were ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:
更新日期:2000-03-01 00:00:00
abstract::Diagnosis of twin reversed arterial perfusion (TRAP) syndrome is a rare fetal anomaly that can be misdiagnosed on prenatal ultrasound. We confirmed the use of colour-flow Doppler for prenatal diagnosis of TRAP syndrome and used serial fetal echocardiography for non-invasive evaluation of the fetus. A patient with twin...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/1097-0223(200008)20:8<615::aid-pd855>3.0.c
更新日期:2000-08-01 00:00:00
abstract:OBJECTIVES:Clinical symptoms and ultrasound signs during pregnancy could suggest the presence of esophageal atresia (EA). However, most often EA is diagnosed postnatally. The aim of our study is to evaluate the course and outcome for prenatally and postnatally diagnosed EA. In addition, we studied the outcome of isolat...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.2466
更新日期:2010-03-01 00:00:00
abstract::Immunoreactive trypsin (IRT) has been assayed in cord blood collection by fetoscopy from fetuses with estimated gestational ages of between 16-24 weeks. Eighty per cent of the specimens contained more than 5 ng/ml of IRT indicating pancreatic synthesis of trypsin by mid-term. A prenatal test for cystic fibrosis based ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970040410
更新日期:1984-07-01 00:00:00
abstract:OBJECTIVES:To study the role of selected cytokines and growth factors involved in the pathogenesis of fetal chylous pleural effusion. METHODS:Seventeen fetuses with prenatal chylothorax at gestational age (GA) 17-29 weeks were enrolled as the study group during the period 2003-2005. Their pleural effusion (n = 17) and...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1704
更新日期:2007-05-01 00:00:00
abstract:OBJECTIVES:To evaluate the screening accuracy for Down syndrome of nuchal translucency (NT) measurement at different crown-rump length (CRL) subgroups along the 10- to 14-week period. METHODS:NT was classified 'enlarged' if greater than or equal to 1.5 and 2.0 multiples of the regressed median. Accuracies for Down syn...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1173
更新日期:2005-05-01 00:00:00
abstract::We report a case of prenatal ultrasound diagnosis of frontonasal dysplasia. This represents a very rare disorder involving the face (hypertelorism, median cleft lip, absence of the nasal tip) and often the central nervous system (CNS) (cranium bifidum occultum, ethmoidal cephalocele, agenesis of the corpus callosum). ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.287
更新日期:2002-05-01 00:00:00
abstract::We present the first report of prenatally diagnosed Dandy-Walker malformation with the karyotype of partial trisomy 11 and 22 due to familial translocation t(11;22)(q23;q11) inherited in three generations. We demonstrate that the Dandy-Walker malformation can be an associated congenital malformation of supernumerary d...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0223(199612)16:12<1137::AID-PD9
更新日期:1996-12-01 00:00:00
abstract::Trisomy 12 mosaicism was found in about 15 per cent of cultured amniocytes obtained from a 32-year-old white female at 17.6 weeks of gestation. Termination of pregnancy was elected and multiple tissues were obtained for chromosome analysis. Of 158 cells examined, only 1 cell in placenta was found with an extra number ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章,评审
doi:10.1002/pd.1970101204
更新日期:1990-12-01 00:00:00
abstract::A method is described which uses the Hind III polymorphism in intron 19 of the factor VIII gene for genomic family analysis and prenatal diagnosis by the polymerase chain reaction. The primers derived from the exon 19 and 20 sequences allow amplification of the whole intron 19 resulting in a 730 bp fragment. Hind III ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970100808
更新日期:1990-08-01 00:00:00
abstract:OBJECTIVE:Maternal serum pregnancy-associated plasma protein-A (PAPP-A) and free beta-human chorionic gonadotrophin (beta-hCG) are useful markers in the screening of Down syndrome in the first trimester. We investigated the effect of intracytoplasmic sperm injection (ICSI), freezing and thawing of embryos on the levels...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1169
更新日期:2005-05-01 00:00:00
abstract::Experience with three prenatally diagnosed pregnancies complicated by an acardiac twin reveals that ultrasonography and echocardiography are helpful in detecting early signs of in-utero congestive heart failure in the normal twin. The use of Doppler blood flow analysis to determine direction of blood flow, post-mortem...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970110405
更新日期:1991-04-01 00:00:00
abstract:OBJECTIVE:To reevaluate the efficiency of the 12 differentially methylated regions (DMRs) used in the methylated DNA immunoprecipitation (MeDIP) real-time quantitative polymerase chain reaction (real-time qPCR) based approach, develop an improved version of the diagnostic formula and perform a larger validation study. ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.3947
更新日期:2012-10-01 00:00:00
abstract::Forty-two fetuses with non-homologous Robertsonian translocations were analyzed for uniparental disomy (UPD). One fetus with a de novo translocation t(13q;14q) had maternal isodisomy of chromosome 14. In a summary of the published data (including the present study), 315 cases were analyzed for UPD after prenatal diagn...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.370
更新日期:2002-08-01 00:00:00
abstract::Manifestations of Fanconi Anemia Complementation Group C (FA-C) include multiple major congenital malformations, hypoplastic radius, absent thumb, growth retardation, elfin-like facial features, microphthalmia, microcephaly, cafe-au-lait spots, early onset of hematologic disease and poor survival (Auerbach, 1997). We ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1055
更新日期:2005-01-01 00:00:00
abstract::We describe the case of a patient with systemic lupus erythematosus, treated by corticosteroids, who presented during two successive pregnancies with serological reactivation of toxoplasmosis associated with fetal lesions. The first infected fetus died in utero with signs of hydrops. The second fetus was treated in ut...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970151216
更新日期:1995-12-01 00:00:00
abstract::We report a cryptic translocation ascertained in a family after the birth of a mentally retarded proband. High resolution chromosome examination revealed that the father had a subtle translocation between chromosome 5 and chromosome 13, 46, XY, t(5;13) (q35.2;q34). Two specific, non-routine techniques were associated ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:
更新日期:1998-04-01 00:00:00
abstract::A 45-year-old woman underwent serial ultrasound screening procedures during late first and second trimesters of pregnancy for advanced maternal age. Cultured amniocytes karyotype indicated full trisomy 21. Subsequently, the fetus developed congenital cataract diagnosed at 24 weeks. This is the first antenatal diagnosi...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/(sici)1097-0223(199908)19:8<780::aid-pd634
更新日期:1999-08-01 00:00:00
abstract:OBJECTIVE:To investigate perinatal outcomes of fetal echogenic bowel (FEB). METHOD:This is a retrospective observational study of FEB cases from Jan 2005-Dec 2010. Data from ultrasound and fetal medicine investigations, uterine artery Doppler (UAD), intra-partum care and neonatal outcome were obtained from Fetal Medic...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.3898
更新日期:2012-08-01 00:00:00
abstract::A case is reported of a male fetus at risk of X-linked adrenoleucodystrophy who showed a normal cultured chorionic villus cell very long chain fatty acid (VLCFA) profile but at birth exhibited grossly abnormal plasma and cultured fibroblast VLCFAs. Maternal contamination or a sample mix-up was excluded by chromosome a...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970150514
更新日期:1995-05-01 00:00:00
abstract:OBJECTIVE:We sought to evaluate the impact of mode of delivery (MOD) on early outcome for neonates diagnosed prenatally with major forms of congenital heart disease (CHD). METHODS:We retrospectively studied infants admitted, over a 2-year period, to a single institution for cardiac intervention. Infants were grouped o...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.3991
更新日期:2012-12-01 00:00:00
abstract:OBJECTIVES:To determine the cost effectiveness of a universal prenatal screening program for alpha- and beta-thalassaemia. METHODS:We retrospectively reviewed our program from 1998 to 2002, and calculated the direct and indirect costs of various components. RESULTS:18,936 women were screened at our prenatal clinic an...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1035
更新日期:2004-11-01 00:00:00