منابع مشابه
Recurrent triploidy of maternal origin.
We report the occurrence of triploid preimplantation embryos following in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) in a woman with two previously-identified triploid conceptuses which spontaneously underwent fetal demise at 10 and 23 weeks' gestation. An error in maternal meiosis II is proposed as the most likely cause.
متن کاملPrenatal Diagnosis of Triploidy in Fetus with Unexpected Chromosomal Translocation of Maternal Origin
Triploidy is a lethal chromosomal abnormality. Foetuses with triploid condition have a tendency to die in early conception and very few survive to term. In this study, we report the prenatal diagnosis of fetal triploidy with unexpected chromosomal translocation. A 27 years old women was referred to our clinical cytogenetic department due to history of previous conceptus with intrauterine growth...
متن کاملDiploid sperm and the origin of triploidy.
Trisomy 16, the 45,X monosomy and triploidy are the more frequent chromosome anomalies in spontaneous abortions. Earlier estimations, based on frequencies of diandric triploidy at conception, resulted in a good correlation with the frequencies of diploid sperm in infertile males (up to 1.9%). Recent data have shown that most diandric triploids originate by dispermy, although 8.3% of them are pr...
متن کاملMaternal NLRP7 and C6orf221 variants are not a common risk factor for androgenetic moles, triploidy and recurrent miscarriage.
Maternal effect genes control early events of embryogenesis. Maternal homozygous and compound mutations in two such genes, NLRP7 and c6orf221, have been detected in the majority of women experiencing recurrent biparental hydatidiform moles. It was suggested that other forms of reproductive wastage, including diploid androgenetic moles, partial moles, polyploidy, recurrent spontaneous abortions ...
متن کاملMeiotic origin of triploidy in the frog detected by genetic analysis of enzyme polymorphisms.
A female frog heterozygous at two unlinked loci, specifying electrophoretic forms of mannosephosphate isomerase (MPI) and malate dehydrogenase (MDH) was crossed to male frogs homozygous for different alleles at each locus. In the offspring approximately ten percent proved to be triploid according to nucleolar and chromosome counts of tail tip cells. Most of these triploids had both maternal all...
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ژورنال
عنوان ژورنال: European Journal of Human Genetics
سال: 2003
ISSN: 1018-4813,1476-5438
DOI: 10.1038/sj.ejhg.5201076