O-158. Gamete maturation and preimplantation failure
نویسندگان
چکیده
منابع مشابه
Synchronous gamete maturation and reliable spawning induction method in holothurians
Several years of research on the gametic development and spawning of different species of holothurians have produced results that find applications in aquaculture and fisheries management programs. The first set of data shows that sea cucumbers secrete a biologically active chemical which allows gamete synthesis synchrony among conspecifics. Laboratory experiments have revealed that the gametic...
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Fertilization is a hallmark event of sexual reproduction marked by the fusion of male and female gamete to form zygote. It is a highly complex, yet a robust process that is intricately regulated by various signalling molecules. A healthy fertilization is determined by the quality of zygote which is contingent on the health of egg and sperm. The relationship between infertility and gametic healt...
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Background This study aimed to investigate whether Artificial Seminiferous Tubules (AST) coated with testicular extra cellular matrix (ECM) support maturation of spermatogenic cells from immature testes. MaterialsAndMethods Medical grade tubes coated with testicular ECM were used. Testes from immature mice were loaded in the concentration of 10000- 20000/ml. Tubes were then immersed in germ cel...
متن کاملElectrical events during gamete maturation and fertilization in animals and humans.
Gamete cells are electrogenic, i.e. capable of responding to electrical stimuli and modifying their electrical properties during the crucial periods of maturation and fertilization. Ion channels have been widely demonstrated on the plasma membrane of the oocyte and spermatozoon in all animals studied, and electrical modifications in gametes are due to ion currents that are modulated via these i...
متن کاملOocyte maturation: gamete-somatic cells interactions, meiotic resumption, cytoskeletal dynamics and cytoplasmic reorganization.
BACKGROUND In a growth phase occurring during most of folliculogenesis, the oocyte produces and accumulates molecules and organelles that are fundamental for the development of the preimplantation embryo. At ovulation, growth is followed by a phase of maturation that, although confined within a short temporal window, encompasses modifications of the oocyte chromosome complement and rearrangemen...
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ژورنال
عنوان ژورنال: Human Reproduction
سال: 1997
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/12.suppl_2.77-a