Pronuclear morphology predicts embryo development and chromosome constitution
نویسندگان
چکیده
منابع مشابه
relationship between protamine deficiency and sperm parameters, pronuclear morphology,cleavage, and embryo quality
introduction: pronuclear size, morphology and orientation are known to affect embryo quality and implantation. the present study was aimed at evaluation of the possible relationship between protamine deficiency with pronuclear morphology and also cleavage and embryo quality. material and methods: semen sample of 160 candidate icsi and ivf couples were analyzed for sperm concentration, and motil...
متن کاملDoes pronuclear morphology and/or early cleavage rate predict embryo implantation potential?
A total of 340 patients referred for in-vitro fertilization was included in a retrospective, comparative study in which zygotes were studied regarding alignment and polarization of nucleolar precursor bodies (NPB) and also early cleavage in relation to implantation and pregnancy rates for the 680 transferred embryos. At assessment of the pronucleus 18-19 h after sperm injection, NPB were checke...
متن کاملThe effect of pronuclear morphology on embryo quality parameters and blastocyst transfer outcome.
BACKGROUND Embryo quality may be accurately assessed as early as the pronuclear zygote phase, as shown in recent studies. However, it is not known whether good quality zygotes are destined to become good quality cleavage stage embryos and blastocysts. METHODS In this retrospective study, 86 intracytoplasmic sperm injection-embryo transfer cycles were studied where each available embryo was sc...
متن کاملMale Pronuclear Formation and Embryo Development Following Intracytoplasmic Injection of Ovine Pretreated Sperm
Background Failure of Male Pronucleus (MPN) formation is a major concern in the success of Intracytoplasmic Sperm Injection (ICSI) in some species. Despite the conducted unsuccessful efforts to improve ICSI efficiency in ovine, the present study was aimed to improve MPN formation and embryo development in ovine ICSI procedure through accompaniment of sperm pretreatment with co-injection of some...
متن کاملEfficient reproduction of cynomolgus monkey using pronuclear embryo transfer technique.
One of the technical bottlenecks in producing nonhuman primate models is that current assisted reproductive techniques, such as in vitro culture and frozen conservation of multicell-stage embryos, often result in poor embryo quality and subsequently lead to low birth rates. We investigated whether pronuclear embryo transfer can be used as an effective means for improving pregnancy and live birt...
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ژورنال
عنوان ژورنال: Reproductive BioMedicine Online
سال: 2004
ISSN: 1472-6483
DOI: 10.1016/s1472-6483(10)61651-3