High maternal plasma antioxidant concentrations associated with preterm delivery

Area of Science:

• Obstetrics and Gynecology
• Biochemistry
• Perinatal Medicine

Background:

• Preeclampsia is linked to maternal oxidative stress and low antioxidants.
• The role of antioxidants in normotensive pregnancies remains unclear.
• Oxidative stress markers and vitamin levels in preterm vs. term deliveries need further investigation.

Purpose of the Study:

• To examine plasma malondialdehyde as a marker of oxidative stress.
• To assess vitamin E and C concentrations in maternal and cord blood.
• To compare these markers in normotensive women delivering preterm versus at term.

Main Methods:

• 140 normotensive pregnant women were recruited.
• Maternal and cord blood samples were analyzed for oxidative stress and vitamin C/E levels.
• Statistical comparison using the t-test was performed between preterm and term delivery groups.

Main Results:

• Oxidative stress was significantly higher in preterm mothers and their cord samples.
• Preterm mothers exhibited higher vitamin C concentrations, positively correlated with oxidative stress.
• Vitamin E levels did not differ significantly between the groups.

Conclusions:

• Elevated maternal oxidative stress is associated with preterm delivery.
• Increased maternal circulating vitamin C concentrations are also linked to preterm birth.
• These findings highlight potential biomarkers for predicting preterm delivery in normotensive pregnancies.