Fatty acids, antioxidants, and oxidative stress in pre-eclampsia

Department of Obstetrics and Gynecology, Bharati Medical College Hospital, Bharati Vidyapeeth University, Maharashtra, India.
International Journal of Gynecology & Obstetrics (Impact Factor: 1.54). 03/2008; 100(3):234-8. DOI: 10.1016/j.ijgo.2007.08.011
Source: PubMed


To investigate whether free radical-mediated membrane lipid peroxidation may be implicated in the pathogenesis of pre-eclampsia.
A prospective study using a sample of 55 healthy pregnant women and 60 pre-eclamptic women recruited at Bharati Medical Hospital, Pune, India. Maternal and cord samples were examined for (red blood cells and plasma) fatty acid profiles, antioxidants, and oxidative stress levels. Mean values were compared between case and control groups using the t test and Wilcoxon rank test.
Pre-eclamptic women showed reduced total omega-3 fatty acids (P<0.05), increased omega-6:omega-3 ratio (P<0.05), higher oxidative stress (P<0.05), and lower antioxidant (P<0.05) levels. Similar trends were also observed in cord samples.
Reduced antioxidants and increased oxidative stress leading to impaired essential polyunsaturated fatty acid levels may be a key factor in the development of pre-eclampsia.

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    • "It has been reported that an altered lipid profile [1], leukocyte activation [2], enhanced inflammatory response [3], and oxidative stress [4], in maternal circulation, are frequently associated with development of this disorder. In PE, the hypoperfused placenta is a potential source of reactive oxygen species (ROS) and cytokines [5] [6], which may induce oxidative stress and endothelial cell dysfunction, as well as an inflammatory response, in the mother. "
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    ABSTRACT: Preeclampsia (PE) is one of the main causes of maternal and fetal mortality and morbidity. PE is associated with an inflammatory state and with oxidative stress, in maternal circulation. Our aim was to evaluate and compare the levels of oxidative stress and inflammatory markers in maternal and umbilical cord blood (UCB), in normal and PE pregnancies. We measured acute-phase proteins (CRP and α1-antitrypsin), proinflammatory cytokines (IL-6 and TNF-α), leukocyte activation (elastase, lactoferrin, sL-selectin, sVCAM, sPECAM), total antioxidant status (TAS), thiobarbituric acid reactive substances (TBARS), and uric acid levels. We studied 42 healthy pregnant women, 46 PE women, and their neonates. The concentrations of IL-6, TNF-α, α1-antitrypsin, CRP, sVCAM, uric acid, and TBARS were significantly higher, and sL-selectin was significantly lower in PE pregnant women as compared with normotensive pregnant women. In newborns uric acid, α1-antitrypsin, and CRP values were significantly higher in PE; leukocyte count, sL-selectin, lactoferrin, and the ratio elastase/α1-antitrypsin were significantly lower. Our data suggest that PE pregnancy is associated with an enhanced maternal inflammatory condition, which is reflected in fetal circulation. This enhanced inflammatory state seems to be related to endothelial dysfunction and increased cytokine synthesis, rather than with neutrophil activation.
    Journal of pregnancy 05/2012; 2012(6):684384. DOI:10.1155/2012/684384
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    • "Cochrane Library Experience on Antioxidants (2006) (2007) (2008) "
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    ABSTRACT: Introduction Aging Cardiovascular Disease, Risk, and Ischemia-Reperfusion Injury ROS and Neurodegenerative Disorders Complex Regional Pain Syndrome Cancer Association Between ROS and Various Diseases Pregnancy and Preeclampsia Asthma Chronic Obstructive Pulmonary Disease Diabetes Type 1 and Type 2 Liver Diseases Pancreatitis Rheumatoid Arthritis Kidney Diseases Concluding Remarks Conflict of Interest Statement Statement of Authorship Acknowledgments References
    Oxidative Stress in Vertebrates and Invertebrates: Molecular Aspects of Cell Signaling, 11/2011: pages 209 - 234; , ISBN: 9781118148143
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    • "Furthermore, a greatly elevated risk of pre-eclampsia in pregnant women at HA has been reported (Keyes et al. 2003). Most of the evidence in these studies indicates a close association between low plasma antioxidant status, especially plasma vitamin C concentrations, and development of the syndrome (Hubel 1999; Chappell et al. 2002; Rodrigo et al. 2005; Chamy et al. 2006; Mehendale et al. 2008; Karacay et al. 2010). In addition, decreased concentrations of vitamin C in umbilical venous plasma and in placental tissue homogenates in pre-eclamptic women has been reported (Kim et al. 2006) and a beneficial role of vitamins C and E in preventing pre-eclampsia has been demonstrated (Chappell et al. 1999, 2002; Rodrigo et al. 2005; Rumiris et al. 2006). "
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    ABSTRACT: The present study evaluated the hypothesis that the effects of hypoxia on sheep pregnancies at high altitude (HA) are mediated by oxidative stress and that antioxidant vitamins may prevent these effects. Both HA native and newcomer ewes were maintained at an altitude of 3,589 m during mating and pregnancy. Control low altitude (LA) native ewes were maintained at sea level. Half of each group received daily oral supplements of vitamins C (500 mg) and E (350 IU) during mating and gestation. Near term, maternal plasma vitamin levels and oxidative stress biomarkers were measured. At delivery, lambs were weighed and measured, and placentas were recovered for macroscopic and microscopic evaluation. Vitamin concentrations in supplemented ewes were two- or threefold greater than in non-supplemented ewes. Plasma carbonyls and malondialdehyde in non-supplemented ewes were consistent with a state of oxidative stress, which was prevented by vitamin supplementation. Vitamin supplementation increased lamb birthweight and cotyledon number in both HA native and newcomer ewes, although placental weight and cotyledon surface were diminished. Placentas from vitamin-supplemented HA ewes were similar to those from ewes at sea level, making these placental traits (weight, number and diameter of cotyledons) similar to those from ewes at sea level. Vitamin supplementation had no effect on LA pregnancies. In conclusion, supplementation with vitamins C and E during pregnancy at HA prevents oxidative stress, improving pregnancy outcomes.
    Reproduction Fertility and Development 01/2011; 23(2):285-96. DOI:10.1071/RD10016 · 2.40 Impact Factor
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