products of lipid peroxidation (F2-isoprostanes) in smokers. Smoking as a cause of oxidative damage. N Engl J Med 1995; 332: 1198–1203 2. Handelman GJ, Walter MF, Adhikarla R et al. Elevated plasma F2-isoprostanes in patients on long-term hemodialysis. Kidney Int 2001; 59: 1960–1966 3. Patrono C, FitzGerald GA. Isoprostanes: potential markers of oxidant stress in atherothrombotic disease. Arter...

Consumption of plant flavonoids, antioxidants, and n-3 fatty acids is proposed to have many potential health benefits derived primarily through antioxidant and anti-inflammatory activities. This study examined the effects of 1,000 mg quercetin + 1,000 mg vitamin C (QC); 1,000 mg quercetin, 1,000 mg vitamin C, 400 mg isoquercetin, 30 mg epigallocatechin gallate, and 400 mg n-3 fatty acids (QFO);...

Arachidonic acid is an essential unsaturated fatty acid and is the most abundant in cell membranes. Its metabolism leads to the formation of the well known prostaglandins and thromboxanes, which are implicated in the modulation of vascular tone and growth and play an important role on the blood-vessel interface. The discovery of their pharmacological activity led to the development of some pote...

Isoprostanes are products of free radical-catalyzed peroxidation and 8-epi-prostaglandin (PG) F2 alpha is the most important vasomodulator of this group of compounds. In human lower leg lymphatics isolated from 5 different patients without a smoking history or hyperlipidemia, 8-epi-PGF2 alpha stimulated in vitro contraction more strongly than the thromboxane receptor agonist U46619. Other isopr...

Isoprostanes are a recently discovered group of prostaglandin isomers. Results of previous studies suggest that they can be used as oxidative stress markers, because in a number of cardiovascular, pulmonary and neurological diseases their levels in biological samples considerably increase. It has been found that people suffering from diabetes, obesity, homozygous familial hypercholesterolemia, ...

F2-Isoprostanes are isomers of the prostaglandin PGF2a. At least one compound of this group, 8-epi-PGF2a, exhibits biological activity, and therefore special interest is focused on the mechanism of isoprostane formation: enzyme catalyzed or radical mediated. We analyzed the formation of isoprostanes in vitro and in vivo. In both systems, purified cyclooxygenase isoenzymes and cell models specif...

Under condition of oxidative stress, free radical-catalyzed peroxidation docosahexaenoic acid (DHA) and adrenic (AdA) generates in vivo neuroprostanes (NeuroPs) dihomo-isoprostanes (dihomo-IsoPs), among a large number key products participating many pathophysiological processes. These non-enzymatic oxygenated metabolites display wide range biological actions (especially DHA-metabolites), some t...

BACKGROUND It has been suggested that depressed persons have increased oxidative stress and decreased anti-oxidant defences. 8-Hydroxy-2'-deoxyguanosine (8-OHdG) and F2-isoprostanes, measures of oxidative DNA and lipid damage respectively, are among the most reliable oxidative stress markers, but studies on their association with depression show conflicting results. This meta-analysis quantifie...

34 Pre-eclampsia represents a state of increased or prolonged vasoconstriction, partially 35 linked to the potent vasocontractile effect of isoprostanes. The process of Rho A– 36 mediated calcium sensitization is inherent to a state of prolonged contractility in many 37 smooth muscle types. The aims of this study were 1), to investigate mRNA expression 38 levels of Rho A and Rho kinase isoforms...