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Hofbauer cells morphology and density in placentas from normal and pathological gestations
Summary
Hofbauer cells are present in placentas throughout pregnancy, decreasing in density over time. A1 Antichymotrypsine is the most specific marker, and no mitotic activity was observed in these placental cells.
Area of Science:
- Reproductive biology
- Cell biology
- Immunohistochemistry
Background:
- Hofbauer cells, placental macrophages, typically decrease in number after mid-gestation.
- Immunohistochemistry reveals a higher prevalence of Hofbauer cells than traditional histological methods suggest.
Purpose of the Study:
- To investigate the morphological and density changes of Hofbauer cells in normal and pathological pregnancies.
- To compare histological and immunohistochemical detection of Hofbauer cells.
Main Methods:
- Examined 70 placentas from normal pregnancies, miscarriages, chromosomal abnormalities, intrauterine growth restriction, and gestational diabetes mellitus.
- Utilized hematoxylin-eosin staining and immunohistochemistry with markers CD68, Lysozyme, A1 Antichymotrypsine, CK-7, vimentin, and Ki-67.
Main Results:
- Hofbauer cells were detected more frequently by immunohistochemistry (87.5%) than HE staining (37.5%) in normal term pregnancies.
- Hofbauer cells were present in first-trimester miscarriages and fetal chromosomal abnormalities.
- Positive immunoreaction for Hofbauer cells was observed in 100% of intrauterine growth restriction and 70% of gestational diabetes mellitus cases.
Conclusions:
- Hofbauer cells persist in placental villi, with decreasing density as pregnancy progresses.
- A1 Antichymotrypsine appears to be the most specific marker for Hofbauer cell detection.
- No mitotic activity of Hofbauer cells was detected, as indicated by negative Ki-67 staining.
