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Lipid peroxide and vitamin E patterns in pregnant women with different types of hypertension in pregnancy. 1998

E Gratacós, and E Casals, and R Deulofeu, and V Cararach, and P L Alonso, and A Fortuny
Departament d'Obstetrícia i Ginecologia, Hospital Clinic de Barcelona, Universitat de Barcelona, Spain.

OBJECTIVE We sought to evaluate the circulating levels of lipid peroxides and vitamin E and the placental levels of lipid peroxides in pregnant women with different types of hypertension. METHODS Lipid peroxides were measured in serum and placental tissue by the thiobarbituric acid method and high-pressure liquid chromatography, and vitamin E was measured by high-pressure liquid chromatography. The patients studied were 36 healthy pregnant women and 92 women with hypertension classified as having mild gestational hypertension (n = 28), severe gestational hypertension (n = 10), preeclampsia (n = 34), and chronic hypertension (n = 20). RESULTS Lipid peroxides in serum and placental tissue were significantly increased, and vitamin E levels in serum were significantly decreased in women with severe gestational hypertension and preeclampsia compared with controls. The groups of mild gestational hypertension or chronic hypertension had similar values of lipid peroxides or vitamin E as controls. CONCLUSIONS Our results suggest that the category of gestational hypertension may be composed of at least two entities with different pathophysiology and support the concept of nonproteinuric preeclampsia.

UI MeSH Term Description Entries
D006973 Hypertension Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more. Blood Pressure, High,Blood Pressures, High,High Blood Pressure,High Blood Pressures
D008054 Lipid Peroxides Peroxides produced in the presence of a free radical by the oxidation of unsaturated fatty acids in the cell in the presence of molecular oxygen. The formation of lipid peroxides results in the destruction of the original lipid leading to the loss of integrity of the membranes. They therefore cause a variety of toxic effects in vivo and their formation is considered a pathological process in biological systems. Their formation can be inhibited by antioxidants, such as vitamin E, structural separation or low oxygen tension. Fatty Acid Hydroperoxide,Lipid Peroxide,Lipoperoxide,Fatty Acid Hydroperoxides,Lipid Hydroperoxide,Lipoperoxides,Acid Hydroperoxide, Fatty,Acid Hydroperoxides, Fatty,Hydroperoxide, Fatty Acid,Hydroperoxide, Lipid,Hydroperoxides, Fatty Acid,Peroxide, Lipid,Peroxides, Lipid
D010920 Placenta A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES). Placentoma, Normal,Placentome,Placentas,Placentomes
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011249 Pregnancy Complications, Cardiovascular The co-occurrence of pregnancy and a cardiovascular disease. The disease may precede or follow FERTILIZATION and it may or may not have a deleterious effect on the pregnant woman or FETUS. Cardiovascular Pregnancy Complications,Complications, Cardiovascular Pregnancy,Pregnancy, Cardiovascular Complications,Cardiovascular Pregnancy Complication,Complication, Cardiovascular Pregnancy,Pregnancies, Cardiovascular Complications,Pregnancy Complication, Cardiovascular
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D014810 Vitamin E A generic descriptor for all TOCOPHEROLS and TOCOTRIENOLS that exhibit ALPHA-TOCOPHEROL activity. By virtue of the phenolic hydrogen on the 2H-1-benzopyran-6-ol nucleus, these compounds exhibit varying degree of antioxidant activity, depending on the site and number of methyl groups and the type of ISOPRENOIDS.

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