decidual

However, the decidual cells make up a new layer, the decidua.

The decidual reaction will be present whether the pregnancy is intrauterine or ectopic.

Factors from the blastocyst also trigger the final formation of decidual cells into their proper form.

The morphology of these cells, and their location deep to the giant cell layer, suggested decidual parenchyma.

Decidual prolactin is not under dopaminergic control.

In contrast, however, nuclear or no staining was prevalent in adjacent decidual cells (white arrowheads).

In contrast, some decidual cells in the proximity of the blastocyst degenerate, providing nutrients for it.

The decidual plate is tightly attached to the chorion frondosum and goes on to form the actual placenta.

Rare decidual cells showed nuclear ERα.

The decidua has a histologically-distinct appearance, displaying large polygonal decidual cells in the stroma.

The blastocyst signals to the endometrium to adapt further to its presence, e.g. by changes in the cytoskeleton of decidual cells.

Advanced maternal age is associated with adverse outcomes in the perinatal period, which may be caused by detrimental effects on decidual and placental development.

Further the decidual response may include release of matrix-degrading enzymes that weaken fetal membranes leading to premature rupture.

IFNγ knockout mice fail to initiate normal pregnancy-induced modification of decidual arteries.

Decidual Natural Killer Cell.

Weak staining was associated with connective tissue cells and decidual cells (compare with control, panel F).

The decidual reaction is a feature seen in very early pregnancy that appears in the generalized area where the blastocyst contacts the endometrial decidua.

Large placental infarcts are associated with vascular abnormalities, e.g. hypertrophic decidual vasculopathy, as seen in hypertension.

It is opined that bacterial vaginosis before or during pregnancy may affect the decidual inflammatory response that leads to preterm birth.

Note Thy-1+ decidual cells (white arrowhead) and unstained extravillous trophoblast cells (full arrowhead).

This, in turn, dislodges the decidual cells from their connection to the underlying basal lamina, which enables the blastocyst to perform the succeeding invasion.

Invasion continues with the syncytiotrophoblasts reaching the basal membrane beneath the decidual cells, penetrating it and further invading into the uterine stroma.

The interglandular tissue is also increased in quantity, and is crowded with large round, oval, or polygonal cells, termed decidual cells.

This is an expansion of it, further developing the uterine glands, the zona compacta and the epithelium of decidual cells lining it.

The endometrium (from the mother) over the chorion frondosum (this part of the endometrium is called the decidua basalis) forms the decidual plate.