首页 | 本学科首页   官方微博 | 高级检索  
     


Cytogenetic analysis of trophoblasts by comparative genomic hybridization in embryo-fetal development anomalies
Authors:A. C. Tabet  A. Aboura  M. C. Dauge  F. Audibert  A. Coulomb  A. Batallan  M. H. Couturier-Turpin  G. Feldmann  G. Tachdjian
Affiliation:1. Cytogénétique, Hôpital Bichat-Cl. Bernard, Inserm u327, Paris, France;2. Cytogénétique, Hôpital A. Béclère, Paris, France;3. Anatomo-Pathologie, Hôpital Bichat, Paris, France;4. Maternité, Hôpital A. Béclère, Paris, France;5. Anatomo-Pathologie, Hôpital A. Béclère, Paris, France;6. Maternité, Hôpital Bichat, Paris, France
Abstract:Cytogenetic studies of spontaneous abortions or intrauterine fetal death depend on conventional tissue culturing and karyotyping. This technique has limitations such as culture failure and selective growth of maternal cells. Fluorescent in situ hybridization (FISH) using specific probes permits diagnosis of aneuploidies but is limited to one or a few chromosomal regions. Comparative genomic hybridization (CGH) provides an overview of chromosomal gains and losses in a single hybridization directly from DNA samples. In a prospective study, we analyzed by CGH trophoblast cells from 21 fetuses in cases of spontaneous abortions, intrauterine fetal death or polymalformed syndrome. Six numerical chromosomal abnormalities including one trisomy 7, one trisomy 10, three trisomies 18, one trisomy 21 and one monosomy X have been correctly identified by CGH. One structural abnormality of the long arm of chromosome 1 has been characterized by CGH. One triploidy and two balanced pericentromeric inversions of chromosome 9 have not been identified by CGH. Sexual chromosomal constitutions were concordant by both classical cytogenetic technique and CGH. Contribution of trophoblast analysis by CGH in embryo-fetal development anomalies is discussed. Copyright © 2001 John Wiley & Sons, Ltd.
Keywords:comparative genomic hybridization  cytogenetic  embryo-fetal development anomalies  trophoblast
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号