Bh. Bevan et al., IMMUNOHISTOCHEMICAL LOCALIZATION OF A BETA-D-GALACTOSIDE-BINDING LECTIN AT THE HUMAN MATERNOFETAL INTERFACE, Histochemical Journal, 26(7), 1994, pp. 582-586
The 14 kD S-type lectin from human placenta may have a role in regulat
ing the maternal immune response to fetal antigens. In this study, an
immunoperoxidase technique was used to determine the distribution of t
he lectin at the human maternofetal interface. Tissue obtained during
the first trimester of pregnancy and at term was used. The lectin was
not detectable in either the villous syncytiotrophoblast or the underl
ying cytotrophoblast in first-trimester tissue, although some cells of
the cytotrophoblast columns were reactive. It was also not detectable
in villous or extravillous trophoblast populations at term. In contra
st, strong reactivity was found in decidual stromal cells throughout g
estation, and endometrial stromal cells were also positive. The lectin
is, therefore, not a component of the immunosuppressive factors assoc
iated with syncytiotrophoblast membranes, but may have a role in eithe
r the decidual control of trophoblast migration or some functions unre
lated to pregnancy, or both.