Journal
FREE RADICAL RESEARCH
Volume 43, Issue 6, Pages 546-552Publisher
INFORMA HEALTHCARE
DOI: 10.1080/10715760902902737
Keywords
Pregnancy; free radicals; oxidative stress; antioxidants; isoprostanes; human
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Funding
- The Swedish Diabetes foundation
- Ultrasound foundation, Uppsala
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This study investigates oxidative stress and antioxidants in normal human pregnancy and post-partum period. Thirty-seven healthy women with normal pregnancies were included. Both urinary and serum samples were collected throughout the pregnancy and post-partum period. Oxidative stress was estimated by measuring the reliable in vivo marker, namely 8-iso-prostaglandin F-2 alpha (8-iso-PGF(2 alpha), an F-2-isoprostane) and antioxidant status was evaluated by measuring alpha- and gamma-tocopherol in serum samples. Pregnancy was associated with successively increased levels of 8-iso-PGF(2 alpha) with advancing gestational age. The median post-partum value corresponded to the values observed in early gestation and a significant decrease was observed from late pregnancy to the post-partum period. Lipid-adjusted alpha- and gamma-tocopherol levels decreased with advancing gestational age. This longitudinal study suggests that mild oxidative stress is involved in normal human pregnancy.
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