Placental expression of estrogen receptor beta and its hormone binding variant – comparison with estrogen receptor alpha and a role for estrogen receptors in asymmetric division and differentiation of estrogen-dependent cells

Table 2 Expression of ERα, and ~52 and 64 kDa ERβ in human term placentae

Placental cell type	ERα	ERβ (N-19,~52 kDa)	ERβ (E12, ~64 kDa)
Villous cytotrophoblast	+^a	-^b	-
Syncytiotrophoblast	-	+^c	+^a
Vascular pericytes	+^d	-	-
Endothelial cells	-	+^a	-
Extravillous trophoblast	-	+^d	+^a
Extravillous fibroblasts	+^d	+^d	+^a
Amniotic epithelium	-	+^a	+^a
Decidua	(+)^e	+^c	-

^aNuclear. ^bCoexpression with ERα during early differentiation of CT cells. ^c Cytoplasmic. ^dNuclear/cytoplasmic. ^e Rare occurrence.

ISSN: 1477-7827