Pre-eclampsia: its pathogenesis and pathophysiolgy.

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Pathophysiology

Background:

• Pre-eclampsia is a critical pregnancy complication with 5-8% global prevalence.
• It is a leading cause of maternal and perinatal mortality, particularly in low- and middle-income countries.
• The precise etiology, pathogenesis, and pathophysiology remain incompletely understood.

Purpose of the Study:

• To review current understanding of pre-eclampsia pathogenesis and pathology.
• To explore the hypothesis of pre-eclampsia as a two-stage disease involving angiogenic/anti-angiogenic factor imbalance.
• To elucidate the link between placental dysfunction and maternal systemic effects.

Main Methods:

• Literature review focusing on recent advancements in pre-eclampsia research.
• Analysis of the proposed two-stage disease model.
• Examination of the role of angiogenic and anti-angiogenic factors.

Main Results:

• Pre-eclampsia is hypothesized to arise from defective spiral artery remodeling, causing placental ischemia.
• This ischemia leads to an imbalance favoring anti-angiogenic factors.
• The imbalance results in maternal endothelial dysfunction and fetal growth restriction (FGR).

Conclusions:

• Defective spiral artery remodeling and subsequent placental ischemia are central to pre-eclampsia pathogenesis.
• An imbalance in angiogenic factors contributes to endothelial dysfunction and FGR.
• While significant insights have been gained, the exact etiology of pre-eclampsia requires further investigation.