|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Chromosomal Aberrations As a Biological Phenomenon in Human Embryonic Developmentстатья
Статья опубликована в журнале из списка Web of Science и/или Scopus
- Авторы: Ivanova A.D., Semenova M.L.
- Журнал: Acta Naturae (англоязычная версия)
- Том: 15
- Номер: 3
- Год издания: 2023
- Издательство: Park Media Ltd
- Местоположение издательства: Moscow, Russia (Federation)
- Первая страница: 27
- Последняя страница: 36
- DOI: 10.32607/actanaturae.25255
- Аннотация: Frequent chromosomal abnormalities are a distinctive feature of early embryonic development in mammals, especially humans. Aneuploidy is considered as a contributing factor to failed embryo implantation and spontaneous abortions. In the case of chromosomal mosaicism, its effect on the potency of embryos to normally develop has not been sufficiently studied. Although, a significant percentage of chromosomal defects in early human embryos are currently believed to be associated with the features of clinical and laboratory protocols, in this review, we focus on the biological mechanisms associated with chromosomal abnormalities. In particular, we address the main events in oocyte meiosis that affects not only the genetic status of an unfertilized oocyte, but also further embryo viability, and analyze the features of first cleavage divisions and the causes of frequent chromosomal errors in early embryonic development. In addition, we discuss current data on self-correction of the chromosomal status in early embryos.Keywords: aneuploidy; chromosomal mosaicism; preimplantation development.
- Добавил в систему: Семенова Мария Львовна