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Placental apoptosis in preeclampsia
A D Allaire1, K A Ballenger, S R Wells
1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7570, USA. allaire@med.unc.edu
Obstetrics and Gynecology
|July 26, 2000
Summary
Preeclampsia is linked to increased placental cell death (apoptosis). Researchers found altered expression of Fas and Fas ligand in placental cells, suggesting a role in preeclampsia development.
Area of Science:
- Reproductive Biology
- Cellular Biology
- Pathology
Background:
- Preeclampsia is a serious pregnancy complication.
- The role of placental apoptosis in preeclampsia is not fully understood.
Purpose of the Study:
- To investigate the association between preeclampsia and placental apoptosis.
- To examine the differential expression of apoptosis mediators in preeclamptic placentas.
Main Methods:
- Terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL) staining was used to quantify apoptosis.
- Immunohistochemistry assessed the expression of Fas, Fas ligand, Bcl-2, and Bax.
Main Results:
- Placentas from women with preeclampsia showed significantly higher rates of apoptosis compared to controls.
- Fas ligand expression was decreased, while Fas expression was increased in the villus trophoblast of preeclamptic placentas.
- No significant differences in Bax or Bcl-2 expression were observed between groups.
Conclusions:
- Increased placental apoptosis and altered Fas/Fas ligand expression in trophoblasts may contribute to the pathogenesis of preeclampsia.
- These findings highlight potential molecular mechanisms underlying preeclampsia.
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