Rehabilitating human oocytes by polar body transplantation
نویسندگان
چکیده
منابع مشابه
Oocytes Polar Body Detection for Automatic Enucleation
Enucleation is a crucial step in cloning. In order to achieve automatic blind enucleation, we should detect the polar body of the oocyte automatically. The conventional polar body detection approaches have low success rate or low efficiency. We propose a polar body detection method based on machine learning in this paper. On one hand, the improved Histogram of Oriented Gradient (HOG) algorithm ...
متن کاملOptimal ICSI timing after the first polar body extrusion in in vitro matured human oocytes.
BACKGROUND This study was conducted to investigate the fertilization and embryo development of human oocytes injected at different time intervals after extrusion of the first polar body (PB) following in vitro maturation (IVM) in IVM cycles. Also, we evaluated whether spindle imaging could serve as a tool to determine the optimal ICSI time. METHODS Oocytes were collected from 43 women with po...
متن کاملChromosome identification in human oocytes and polar bodies by spectral karyotyping.
Sixty unfertilized human oocytes and two fresh polar bodies were karyotyped by spectral karyotyping (SKY). The oocytes were provided by 29 women ranging from 30 to 42 yr of age. The mean hybridization efficiency for oocytes was 95.2% (60/63). Nondisjunction of bivalent chromosomes (13.3%) and predivision of sister chromatids at meiosis I (3.3%) were unequivocally determined by analysis first wi...
متن کاملKaryotyping of human oocytes by chromosomal analysis of the second polar bodies.
This paper describes a method for obtaining metaphase chromosomes from human second polar bodies. The second polar body nucleus was injected into the cytoplasm of an enucleated oocyte, which is activated shortly after injection. When the polar body nucleus is transformed into a haploid pronucleus, treatment with okadaic acid was used to induce premature chromosome condensation. A total of 25 an...
متن کاملPreliminary observations on polar body extrusion and pronuclear formation in human oocytes using time-lapse video cinematography.
In this study, we have used time-lapse video cinematography to study fertilization in 50 human oocytes that had undergone intracytoplasmic sperm injection (ICSI). Time-lapse recording commenced shortly after ICSI and proceeded for 17-20 h. Oocytes were cultured in an environmental chamber which was maintained under standard culture conditions. Overall, 38 oocytes (76%) were fertilized normally,...
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ژورنال
عنوان ژورنال: Journal of Assisted Reproduction and Genetics
سال: 2017
ISSN: 1058-0468,1573-7330
DOI: 10.1007/s10815-017-0942-2