Total free radical trapping antioxidant potential in pre-eclampsia

Area of Science:

• Biochemistry
• Obstetrics
• Free Radical Biology

Background:

• Pre-eclampsia is a pregnancy complication characterized by high blood pressure and potential organ damage.
• Oxidative stress plays a significant role in the pathophysiology of pre-eclampsia.
• Assessing antioxidant status is crucial for understanding disease mechanisms.

Purpose of the Study:

• To measure serum urate, tocopherol (vitamin E), and ascorbate (vitamin C) levels in pre-eclampsia.
• To calculate the total radical trapping antioxidant potential (TRAP) in pre-eclamptic pregnancies.
• To compare these markers between pre-eclamptic, normotensive pregnant, and non-pregnant women.

Main Methods:

• Serum samples from 25 pre-eclamptic, 25 normotensive pregnant, and 25 non-pregnant women were analyzed.
• Measurements included uric acid, vitamins C and E, total sulfhydryl groups, malonaldehyde (MDA), and superoxide generation (NBT reduction).
• Total radical trapping antioxidant potential (TRAP) was calculated and data analyzed using Student's t-test.

Main Results:

• Pre-eclamptic women showed significantly higher levels of MDA, superoxide generation, and uric acid compared to controls (P<0.001).
• Vitamin C, vitamin E, and total thiols were significantly lower in pre-eclampsia (P<0.001).
• TRAP was significantly higher in the pre-eclamptic group.

Conclusions:

• Pre-eclampsia is associated with increased oxidative stress markers and altered antioxidant levels.
• Elevated TRAP in pre-eclampsia suggests a compensatory increase in antioxidant capacity.
• TRAP is a valuable measure for assessing the plasma's chain-breaking antioxidant capacity against lipid peroxidation.