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[Chromosome analysis of ovocytes and human embryos collected after fertilization in vitro. A model of natural selection against aneuploidy]. 1988

M Plachot, and J De Grouchy, and A M Junca, and J Mandelbaum, and J Cohen, and J Salat-Baroux
INSERM U.173, UA 119 CNRS, Laboratoire de Cytogénétique Humaine et Comparée, Hôpital Necker Enfants-Malades, Paris.

Fertilization in-vitro offers the possibility of studying the karyotype of ovocytes obtained after superovulation, when they are not fertilized. Among 120 ovocytes, 30 p. cent presented a chromosomal anomaly. The same study was carried out on morphologically normal or abnormal embryos - and the percentage of chromosomal anomalies approximates here 27 p. cent. These studies offer a model of natural selection against chromosomal anomalies and confirm the limiting role of these anomalies in the success of FIV.

UI MeSH Term Description Entries
D007621 Karyotyping Mapping of the KARYOTYPE of a cell. Karyotype Analysis Methods,Analysis Method, Karyotype,Analysis Methods, Karyotype,Karyotype Analysis Method,Karyotypings,Method, Karyotype Analysis,Methods, Karyotype Analysis
D009865 Oocytes Female germ cells derived from OOGONIA and termed OOCYTES when they enter MEIOSIS. The primary oocytes begin meiosis but are arrested at the diplotene state until OVULATION at PUBERTY to give rise to haploid secondary oocytes or ova (OVUM). Ovocytes,Oocyte,Ovocyte
D002869 Chromosome Aberrations Abnormal number or structure of chromosomes. Chromosome aberrations may result in CHROMOSOME DISORDERS. Autosome Abnormalities,Cytogenetic Aberrations,Abnormalities, Autosome,Abnormalities, Chromosomal,Abnormalities, Chromosome,Chromosomal Aberrations,Chromosome Abnormalities,Cytogenetic Abnormalities,Aberration, Chromosomal,Aberration, Chromosome,Aberration, Cytogenetic,Aberrations, Chromosomal,Aberrations, Chromosome,Aberrations, Cytogenetic,Abnormalities, Cytogenetic,Abnormality, Autosome,Abnormality, Chromosomal,Abnormality, Chromosome,Abnormality, Cytogenetic,Autosome Abnormality,Chromosomal Aberration,Chromosomal Abnormalities,Chromosomal Abnormality,Chromosome Aberration,Chromosome Abnormality,Cytogenetic Aberration,Cytogenetic Abnormality
D005260 Female Females
D005307 Fertilization in Vitro An assisted reproductive technique that includes the direct handling and manipulation of oocytes and sperm to achieve fertilization in vitro. Test-Tube Fertilization,Fertilizations in Vitro,In Vitro Fertilization,Test-Tube Babies,Babies, Test-Tube,Baby, Test-Tube,Fertilization, Test-Tube,Fertilizations, Test-Tube,In Vitro Fertilizations,Test Tube Babies,Test Tube Fertilization,Test-Tube Baby,Test-Tube Fertilizations
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000782 Aneuploidy The chromosomal constitution of cells which deviate from the normal by the addition or subtraction of CHROMOSOMES, chromosome pairs, or chromosome fragments. In a normally diploid cell (DIPLOIDY) the loss of a chromosome pair is termed nullisomy (symbol: 2N-2), the loss of a single chromosome is MONOSOMY (symbol: 2N-1), the addition of a chromosome pair is tetrasomy (symbol: 2N+2), the addition of a single chromosome is TRISOMY (symbol: 2N+1). Aneuploid,Aneuploid Cell,Aneuploid Cells,Aneuploidies,Aneuploids,Cell, Aneuploid,Cells, Aneuploid
D012641 Selection, Genetic Differential and non-random reproduction of different genotypes, operating to alter the gene frequencies within a population. Natural Selection,Genetic Selection,Selection, Natural
D013480 Superovulation Occurrence or induction of release of more ova than are normally released at the same time in a given species. The term applies to both animals and humans. Superovulations
D025063 Chromosome Disorders Clinical conditions caused by an abnormal chromosome constitution in which there is extra or missing chromosome material (either a whole chromosome or a chromosome segment). (from Thompson et al., Genetics in Medicine, 5th ed, p429) Autosomal Chromosome Disorders,Chromosome Abnormality Disorders,Chromosomal Disorders,Autosomal Chromosome Disorder,Chromosomal Disorder,Chromosome Abnormality Disorder,Chromosome Disorder,Chromosome Disorder, Autosomal,Chromosome Disorders, Autosomal,Disorder, Chromosomal,Disorder, Chromosome,Disorder, Chromosome Abnormality,Disorders, Chromosomal,Disorders, Chromosome

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