Results 261 to 270 of about 509,837 (300)

Mechanisms of Xenopus oocyte maturation

1997
Publisher Summary This chapter discusses the mechanisms of xenopus oocyte maturation. Although many aspects of the meiotic cell cycle are similar to the mitotic cell cycle, the differences between them are critical for the accurate reduction of genetic material.
M S, Murakami, G F, Vande Woude
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Mature oocyte cryopreservation: a guideline

Fertility and Sterility, 2013
There is good evidence that fertilization and pregnancy rates are similar to IVF/ICSI with fresh oocytes when vitrified/warmed oocytes are used as part of IVF/ICSI for young women. Although data are limited, no increase in chromosomal abnormalities, birth defects, and developmental deficits has been reported in the offspring born from cryopreserved ...
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Oocyte maturation and fertilization

Animal Reproduction Science, 1992
Abstract Effects of gonadotrophic hormones added to culture medium on oocyte maturation and IVF have been investigated. Percentages of presumptive zygotes that developed to morulae and blastocysts did not differ significantly among embryos cultured without hormones, with LH+E 2 and with FSH+E 2 .
K. Goto, A. Iritani
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The Biochemistry of Oocyte Maturation

2002
Oocyte maturation is a complex process that encompasses growth and differentiation of the oocyte, acquisition of meiotic competence, initiation and completion of nuclear maturation, and cytoplasmic changes related to fertilizability and post-fertilization developmental potential.
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Recurring themes in oocyte maturation

Biology of the Cell, 1998
I am pleased to contribute to this special issue of Biology of the Cell in honor of Yoshio Masui. Oocyte maturation remains a small enough and young enough field that the authors assembled for this issue can trace the entire development of the field over the last 30 years, beginning with the early demonstration by Masui (1967) and others that steroids ...
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Immature oocyte retrieval with in-vitro oocyte maturation

Current Opinion in Obstetrics and Gynaecology, 1999
Early studies of in-vitro fertilization used immature oocytes. The process evolved to retrieving metaphase II oocytes, and was eventually successful. At present, aggressive ovulation induction protocols are the mainstay of assisted reproductive technology programs, but not without increased cost, multiple gestations, morbidity, potential future risks ...
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[Oocyte maturation: can oocyte competence be defined?].

Journal de gynecologie, obstetrique et biologie de la reproduction, 2006
Oocyte competence is acquired throughout oogenesis, via the interaction with somatic cells. The ability to reinitiate the meiotic process and undergo preimplantation development is progressively determined during the antral phase. It is well-known that these changes involve the nuclear and cytoplasmic compartments, respectively, but the underlying ...
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Oocyte Maturation

1979
Y, Masui, H J, Clarke
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Making a good egg: human oocyte health, aging, and in vitro development

Physiological Reviews, 2023
Evelyn E Telfer
exaly  

Mouse oocyte maturation: How similar is it to frog oocyte maturation?

2013
In this study, I have attempted to address the similarities/differences between amphibian and mouse oocytes by focusing on two aspects of mouse oocyte maturation. In the first project, I investigated the ability of several antagonists of serotonin receptors to initiate follicle-enclosed mouse oocytes to undergo maturation.
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