Recurrent triploidy of maternal origin.
نویسندگان
چکیده
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.
منابع مشابه
Prenatal 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...
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We report on a 22 year old mother, a carrier of a 6;14 balanced reciprocal translocation, who aborted a triploid conceptus carrying a similar translocation. We showed the maternal origin of this triploidy, after non-disjunction at meiosis I. The phenotypic expression as a non-molar pregnancy, the contribution of the maternal translocation, and possible aetiological factors of triploidy are disc...
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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 ...
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PREMISE OF THE STUDY Hybridization between diploids and tetraploids can lead to new allopolyploid species, often via a triploid intermediate. Viable triploids are often produced asymmetrically, with greater success observed for "maternal-excess" crosses where the mother has a higher ploidy than the father. Here we investigated the evolutionary origins of Mimulus peregrinus, an allohexaploid rec...
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ورودعنوان ژورنال:
- Prenatal diagnosis
دوره 20 7 شماره
صفحات -
تاریخ انتشار 2000