decidualization
Pronunciation: deh-SID-you-al-ih-ZAY-shun
The transformation of endometrial stromal cells into decidual cells in preparation for implantation.
Full Definition
Decidualization is the process by which endometrial stromal cells undergo morphological and functional transformation into specialized decidual cells during the luteal phase of the menstrual cycle. This process is mediated primarily by progesterone and is essential for successful embryo implantation and early pregnancy maintenance. Decidual cells provide nutritional support to the developing embryo and help establish the maternal-fetal interface. Inadequate decidualization has been implicated in implantation failure and early pregnancy loss.
Usage
Usage note: Related but distinct from 'endometrial receptivity' - decidualization is the cellular process while receptivity refers to the functional state.
In Context
- "The endometrial biopsy showed inadequate decidualization despite normal progesterone levels." — Pathology report
- "Proper decidualization is crucial for successful embryo implantation in IVF cycles." — Research article