Placental apoptotic markers are associated with placental morphometry

Area of Science:

• Obstetrics and Gynecology
• Perinatal Medicine
• Cellular and Molecular Biology

Background:

• Preeclampsia is a significant hypertensive disorder in pregnancy, leading to severe maternal and neonatal complications.
• Abnormal placentation and placental dysfunction are key features of preeclampsia.
• Increased placental apoptosis, potentially influenced by homocysteine and oxidative stress, may worsen preeclampsia symptoms.

Purpose of the Study:

• To investigate the association between placental apoptotic markers and placental dimensions in preeclampsia.
• To explore the relationship between apoptotic markers, placental characteristics, and maternal/neonatal factors in preeclampsia.
• To examine the correlation of placental apoptosis with oxidative stress markers in preeclamptic pregnancies.

Main Methods:

• Study included 80 pregnant women (40 preeclampsia, 40 controls).
• Placental dimensions (major/minor axis, breadth, thickness, weight) were measured.
• Protein levels (caspase-3, caspase-8, BAX, Bcl-2) and gene expression of apoptotic markers were analyzed using ELISA and qPCR.

Main Results:

• Proapoptotic markers (caspase-8, caspase-3) were elevated, while antiapoptotic marker (Bcl-2) was reduced in preeclampsia.
• Caspase-3 and Bcl-2 levels showed negative associations with placental thickness at cord insertion.
• Elevated caspase-8 and caspase-3 correlated positively with placental MDA levels (oxidative stress marker).

Conclusions:

• This study establishes a link between placental apoptotic markers, oxidative stress, and placental dimensions in preeclampsia.
• Findings suggest that apoptosis plays a role in placental dysfunction associated with preeclampsia.
• Apoptotic markers may serve as indicators of placental changes and oxidative stress in preeclamptic pregnancies.