Why is chromosome segregation error in oocytes increased with maternal aging?
- PMID: 22013190
- DOI: 10.1152/physiol.00020.2011
Why is chromosome segregation error in oocytes increased with maternal aging?
Abstract
It is well documented that female fertility is decreased with advanced maternal age due to chromosome abnormality in oocytes. Increased chromosome missegregation is mainly caused by centromeric cohesion reduction. Other factors such as weakened homologous recombination, improper spindle organization, spindle assembly checkpoint (SAC) malfunction, chromatin epigenetic changes, and extra-oocyte factors may also cause chromosome errors.
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