We report a case of discordant non-mosaic karyotypes following chorionic villus sampling (CVS). A 45,XX,der(21;21)(q10;q10) karyotype was found on direct preparation of cytotrophoblasts and 46,XX was found on long-term culture of mesenchymal core cells. Analysis of amniotic fluid cells and fetal tis
Acceptance of chorionic villus sampling in the southwest region of the Netherlands: A 5-Year evaluation
β Scribed by Brandenburg, H. ;Jahoda, M. G. J. ;Los, F. J. ;Wladimiroff, J. W.
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 245 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0148-7299
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β¦ Synopsis
Abstract
The acceptance of chorionic villus sampling (CVS) for monitoring pregnancies at risk for chromosomal and genetic disorders was studied from its introduction in the Centre for Clinical Genetics in Rotterdam in 1984 until 1988. Special attention was given to increasing acceptance in the group with advanced maternal age (AMA) (12.6% CVS in 1984, 52.2% CVS in 1988) and the group with a high genetic risk (HGR) (42.7% in 1984, 86.7% in 1988). The oddsβgrowthβrate in CVS was 1.64 and 1.67 respectively, which was not significantly different. The relatively limited use of CVS at AMA is most likely determined by the fact that a considerable number of patients are referred too late in pregnancy to have the option of CVS.
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restrictive definition of TDDs (all five digits affected) may limit the ability to evaluate the association between CVS and TDDs in populations in whom CVS is usually performed at or after 10 weeks' gestation; and highlight the necessity to consider gestational age in any evaluation of the relative
Fetal cells are present in the circulation of pregnant women and can be isolated using density gradient centrifugation and magnetic cell sorting. In the present study, maternal cell preparations were depleted for CD45and CD14-positive cells and enriched for CD71-positive cells. The number of fetal n