R-173. Chaotic cleavage divisions observed in embryos of Robertsonian translocation carriers during preimplantation genetic diagnosis
نویسندگان
چکیده
منابع مشابه
Meiotic segregation of Robertsonian translocations ascertained in cleavage-stage embryos--implications for preimplantation genetic diagnosis.
BACKGROUND The aim of this study was to ascertain the prevalence of meiotic segregation products in embryos from carriers of 13/14 and 14/21 Robertsonian translocations and to estimate the predictive value of testing single cells using the fluorescence in situ hybridization (FISH) technique, to provide more information for decision-making about PGD. METHODS In this prospective cohort study, t...
متن کاملEmbryos of Robertsonian Translocation Carriers Exhibit a Mitotic Interchromosomal Effect That Enhances Genetic Instability during Early Development
Balanced chromosomal rearrangements represent one of the most common forms of genetic abnormality affecting approximately 1 in every 500 (0.2%) individuals. Difficulties processing the abnormal chromosomes during meiosis lead to an elevated risk of chromosomally abnormal gametes, resulting in high rates of miscarriage and/or children with congenital abnormalities. It has also been suggested tha...
متن کاملMapping allele with resolved carrier status of Robertsonian and reciprocal translocation in human preimplantation embryos.
Reciprocal translocations (RecT) and Robertsonian translocations (RobT) are among the most common chromosomal abnormalities that cause infertility and birth defects. Preimplantation genetic testing for aneuploidy using comprehensive chromosome screening for in vitro fertilization enables embryo selection with balanced chromosomal ploidy; however, it is normally unable to determine whether an em...
متن کاملReciprocal Translocation Carrier Diagnosis in Preimplantation Human Embryos
Preimplantation genetic diagnosis (PGD) is widely applied in reciprocal translocation carriers to increase the chance for a successful live birth. However, reciprocal translocation carrier embryos were seldom discriminated from the normal ones mainly due to the technique restriction. Here we established a clinical applicable approach to identify precise breakpoint of reciprocal translocation an...
متن کاملPreimplantation genetic diagnosis of chromosome balance in embryos from a patient with a balanced reciprocal translocation.
Duplications or deletions are present in a high percentage of the gametes produced by individuals carrying balanced translocations. Preimplantation genetic diagnosis was used to examine chromosome balance in embryos from a patient having a reciprocal translocation within the short arms of chromosomes 5 and 8 (46,XX,t(5;8)(p13;p23)). This woman has two sisters with the translocation unbalanced, ...
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ژورنال
عنوان ژورنال: Human Reproduction
سال: 1997
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/12.suppl_2.310-a