Book contents
- In-Vitro Fertilization
- In-Vitro Fertilization
- Copyright page
- Contents
- Preface
- Acknowledgments
- Chapter 1 Review of Cell and Molecular Biology
- Chapter 2 Endocrine Control of Reproduction
- Chapter 3 Gametes and Gametogenesis
- Chapter 4 Gamete Interaction
- Chapter 5 First Stages of Development
- Chapter 6 Implantation and Early Stages of Fetal Development
- Chapter 7 Stem Cell Biology
- Chapter 8 The Clinical In-Vitro Fertilization Laboratory
- Chapter 9 Quality Management in the IVF Laboratory
- Chapter 10 Sperm and ART
- Chapter 11 Oocyte Retrieval and Embryo Culture
- Chapter 12 Cryopreservation of Gametes and Embryos
- Chapter 13 Micromanipulation Techniques
- Chapter 14 Preimplantation Genetic Diagnosis
- Chapter 15 Epigenetics and Human Assisted Reproduction
- Index
- References
Chapter 4 - Gamete Interaction
Published online by Cambridge University Press: 24 December 2019
- In-Vitro Fertilization
- In-Vitro Fertilization
- Copyright page
- Contents
- Preface
- Acknowledgments
- Chapter 1 Review of Cell and Molecular Biology
- Chapter 2 Endocrine Control of Reproduction
- Chapter 3 Gametes and Gametogenesis
- Chapter 4 Gamete Interaction
- Chapter 5 First Stages of Development
- Chapter 6 Implantation and Early Stages of Fetal Development
- Chapter 7 Stem Cell Biology
- Chapter 8 The Clinical In-Vitro Fertilization Laboratory
- Chapter 9 Quality Management in the IVF Laboratory
- Chapter 10 Sperm and ART
- Chapter 11 Oocyte Retrieval and Embryo Culture
- Chapter 12 Cryopreservation of Gametes and Embryos
- Chapter 13 Micromanipulation Techniques
- Chapter 14 Preimplantation Genetic Diagnosis
- Chapter 15 Epigenetics and Human Assisted Reproduction
- Index
- References
Summary
Mature human gametes ready for fertilization differ in their state of nuclear maturation: the spermatozoon has completed meiosis and the oocyte is arrested at metaphase II. However, both gametes must also undergo a process of cytoplasmic maturation before they are capable of fertilization. This involves a complex series of biochemical, physiological and structural events that occur in a carefully orchestrated temporal and spatial pattern in parallel with, but independent from, nuclear maturation. Cytoplasmic and nuclear maturation are often asynchronous (Dale, 2018a): therefore, a cohort of human metaphase II oocytes collected after controlled ovarian hyperstimulation in an IVF program may appear to be similar with regards to the nuclear apparatus, but they are in fact at various stages of cytoplasmic maturation. This may partly explain the different developmental capabilities of embryos generated from a single cohort of oocytes.
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- In-Vitro Fertilization , pp. 77 - 96Publisher: Cambridge University PressPrint publication year: 2020