منابع مشابه
Energy Metabolism Regulating Mammalian Oocyte Maturation
Oocyte maturation is a final step of gamete development that follows a prolonged period of cell growth within a growing follicle. Unlike oocyte growth that takes several weeks or months, maturation process is a short (hours or days), dynamic process. The period of oocyte maturation varies among species, ranging from 10-13 hours in the mouse (Edwards & Gates, 1959) to 16-24 hours in the cow (Dom...
متن کاملSmall GTPases and formins in mammalian oocyte maturation: cytoskeletal organizers
The maturation process of mammalian oocytes accompanies an extensive rearrangement of the cytoskeleton and associated proteins. As this process requires a delicate interplay between the cytoskeleton and its regulators, it is often targeted by various external and internal adversaries that affect the congression and/or segregation of chromosomes. Asymmetric cell division in oocytes also requires...
متن کاملHistone modifications during mammalian oocyte maturation: dynamics, regulation and functions.
Histone modifications are associated with many fundamental biological processes in cells. An emerging notion from recent studies is that meiosis stage-dependent histone modifications are crucial for the oocyte development in mammals. In this paper, we review the changes and regulation as well as functions of histone modifications during meiotic maturation of mammalian oocyte, with particular em...
متن کاملFailure of oocyte maturation: possible mechanisms for oocyte maturation arrest.
For human IVF, the patient's ovaries are hormonally stimulated to ensure the collection of fully matured oocytes that are at the metaphase II stage. Only these oocytes can be successfully fertilized either when mixed with sperm or after ICSI. Nevertheless, in some cases immature or maturing oocytes are recovered from follicles. Surprisingly, sometimes these oocytes do not complete maturation wh...
متن کاملOocyte maturation in bitches
The canine species has been used as an experimental model for preservation of endangered species. Biotechnologies of reproduction, such as in vitro maturation (IVM), have been used to meet this objective. Several protocols for in vitro embryo production (IVEP) in swine and bovine species have been adapted for canids. However, the highest rate reported for in vitro maturation in canids is only 3...
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ژورنال
عنوان ژورنال: Reproduction Nutrition Développement
سال: 1987
ISSN: 0181-1916
DOI: 10.1051/rnd:19870701