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Decidualization is a process that results in significant changes to cells of the endometrium in preparation for, and during, pregnancy. This includes morphological and functional changes (the decidual reaction ) to endometrial stromal cells (ESCs), the presence of decidual white blood cells (leukocytes), and vascular changes to maternal arteries.
Decidualization includes the process of differentiation of the spindle-shape stromal fibroblasts into the plump secretory decidual cells, which create a pericellular extracellular matrix rich in fibronectin and laminin (similar to epithelial cells). Vascularity, as well as vascular permeability, is enhanced in the decidualizing endometrium.
Experimentally, human endometrial stromal cells can be decidualized in culture by using analogs of cAMP and progesterone. The cells will exhibit a decidualized phenotype and display upregulation of common decidualization markers such as prolactin and IGFBP1 .
Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...
The endometrium is the ... About 20,000 protein coding genes are expressed in human cells and some 70% of these genes are expressed in the normal endometrium ...
The process known as decidualization occurs when the endometrium changes both physiologically and morphologically in order to support and maintain an early pregnancy. [21] The final effect of endometrial cell differentiation and lymphoid cell influx is the formation of a tissue that is functionally distinct.
The corpus luteum secretes progesterone, which is a steroid hormone responsible for the decidualization of the endometrium (its development) and maintenance, respectively. It also produces relaxin , a hormone responsible for softening of the pubic symphysis which helps in parturition.
Ectopic decidua are decidual cells found outside inner lining of the uterus. This condition was first described in 1971 by Walker [1] and the name 'ectopic decidua' was coined by Tausig. [2] While ectopic decidua is most commonly seen during pregnancy, it rarely occurs in non-pregnant people, accompanied by bleeding and pain. [citation needed]