Skip to main content Accessibility help
×
Hostname: page-component-77c78cf97d-xcx4r Total loading time: 0 Render date: 2026-04-26T18:09:07.046Z Has data issue: false hasContentIssue false

Chapter 4 - Gamete Interaction

Published online by Cambridge University Press:  24 December 2019

Kay Elder
Affiliation:
Bourn Hall Clinic, Cambridge
Brian Dale
Affiliation:
Centre for Assisted Reproduction, Naples
Get access

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.

Information

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Book purchase

Temporarily unavailable

Save book to Kindle

To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

  • Gamete Interaction
  • Kay Elder, Bourn Hall Clinic, Cambridge, Brian Dale
  • Book: In-Vitro Fertilization
  • Online publication: 24 December 2019
  • Chapter DOI: https://doi.org/10.1017/9781108611633.005
Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

  • Gamete Interaction
  • Kay Elder, Bourn Hall Clinic, Cambridge, Brian Dale
  • Book: In-Vitro Fertilization
  • Online publication: 24 December 2019
  • Chapter DOI: https://doi.org/10.1017/9781108611633.005
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Gamete Interaction
  • Kay Elder, Bourn Hall Clinic, Cambridge, Brian Dale
  • Book: In-Vitro Fertilization
  • Online publication: 24 December 2019
  • Chapter DOI: https://doi.org/10.1017/9781108611633.005
Available formats
×