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Vitamin E in relation to lipid peroxidation in experimental septic shock
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences. (Clinical Nutrition)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences. (Anaesthesiology and Intensive Care)
2000 (English)In: Prostaglandins, Leukotrienes and Essential Fatty Acids, ISSN 0952-3278, E-ISSN 1532-2823, Vol. 62, no 3, 195-199 p.Article in journal (Refereed) Published
Abstract [en]

Lipid peroxidation and antioxidant balance in the body is a crucial factor in the pathophysiology of various diseases. This study investigates the circulatory alpha-tocopherol levels and its relationship with 8-iso-prostaglandin F2alpha (8-iso-PGF2alpha), a non-enzymatic and, 15-keto-13,14-dihydro-PGF2alpha (15-K-DH-PGF2alpha), a cyclooxygenase catalysed oxidation product of arachidonic acid in experimental septic shock in pigs. A steady decrease in alpha-tocopherol levels in plasma was observed in both survivor and non-survivor animals. A simultaneous increase of oxidative injury indicator, plasma 8-iso-PGF2alpha was seen in both groups but with a different fashion. 8-Iso-PGF2alpha levels increased steadily in the animals that died during the experiment. An early and rapid increase of plasma 15-K-DH-PGF2alpha, an inflammatory response indicator, was also observed in all animals. There was a significant difference in the kinetics of decrement of alpha-tocopherol levels and a concomitant increase in 15-K-DH-PGF2alpha levels among the non-survivors. Thus, a successive disappearance of circulatory vitamin E in conjunction with the surge of plasma isoprostanes and prostaglandins impairs the oxidant-antioxidant balance in favour of the former and may possibly have an effect on the survivality during experimental porcine septicaemia.

Place, publisher, year, edition, pages
2000. Vol. 62, no 3, 195-199 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-53196DOI: 10.1054/plef.2000.0141PubMedID: 10841043OAI: oai:DiVA.org:uu-53196DiVA: diva2:81106
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-04Bibliographically approved

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