منابع مشابه
O-23: Transfer of Blastocysts Derived from Frozen Thawed Cleavage Stage Embryos Improved Ongoing Pregnancy
Background: The aim of our study was to compare the resulting from transfer of embryos that cryopereserved in cleavage stage after thawing and transfer of embryos after thawing and culture in sequentional media until blastocyst formation. Materials and Methods: In this prospective clinical study, we have evaluated 128 cycles in women undergone in vitro fertilization (IVF) or intracytoplasmic sp...
متن کاملTelomere lengths in human oocytes, cleavage stage embryos and blastocysts
Telomeres are repeated sequences that protect the ends of chromosomes and harbour DNA repair proteins. Telomeres shorten during each cell division in the absence of telomerase. When telomere length becomes critically short, cell senescence occurs. Telomere length therefore reflects both cellular ageing and capacity for division. We have measured telomere length in human germinal vesicle (GV) oo...
متن کاملChromosome abnormalities in 1255 cleavage-stage human embryos.
The relationship was examined between chromosome abnormalities in cleavage stage human embryos and maternal age, embryo morphology and development rate. Embryos that were classified as suboptimal for transfer from patients undergoing IVF treatment were disaggregated, and all or most of their cells were fixed for analysis by fluorescence in-situ hybridization. Chromosomes X, Y, 13, 18 and 21, an...
متن کاملGene expression profiles in Ciona intestinalis cleavage-stage embryos
A total of 1612 expression sequence tags derived from Ciona intestinalis cleavage-stage embryos were examined to explore detailed gene expression profiles. The 3' sequences indicate that the 1612 clones can be categorized into 1066 independent clusters. DDBJ database search suggested that 496 of them showed significant matches to reported proteins with distinct functions. Among them 69 are asso...
متن کاملMorphological and cytogenetic assessment of cleavage and blastocyst stage embryos.
Morphological assessments are the main way in which fertility clinics select in vitro generated embryo(s) for transfer to the uterus. However, it is widely acknowledged that the microscopic appearance of an embryo is only weakly correlated with its viability. Furthermore, the extent to which morphology is affected by aneuploidy, a genetic defect common in human preimplantation embryos, remains ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Human Reproduction
سال: 2003
ISSN: 1460-2350
DOI: 10.1093/humrep/deg201