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Pàgina 1 des de 69 resultats
Brain edema: induction in cortical slices by polyunsaturated fatty acids.
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The presence of polyunsaturated and saturated fatty acids in leukocytic membranes prompted study of their possible role in the induction of brain edema. Polyunsaturated fatty acids including sodium arachidonate, sodium linoleate, sodium linolenate, and docasahexaenoic acids induced edma in slices of
Polyunsaturated Fatty Acid Composition of Surgically Removed Hard Exudates in Diabetic Macular Edema.
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Three eyes of 2 patients with diabetic macular edema underwent a vitrectomy to remove subfoveal hard exudates. Fatty acid compositions of hard exudates and plasma phospholipids (PL) as an objective estimation of dietary intake were analyzed. Polyunsaturated fatty acids (PUFA) were relatively
Hypothesis: membrane phospholipid degradation and polyunsaturated fatty acids play a key role in the pathogenesis of brain edema.
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Metabolic basis of brain edema.
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A large number of metabolic factors have been incriminated in the pathogenesis of the various forms of brain edema. Ultimately we must learn more about the factors responsible for the integrity of the membranes of the capillary endothelium, neurons, and glia. What determines normal membrane
Transient formation of superoxide radicals in polyunsaturated fatty acid-induced brain swelling.
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The involvement of superoxide free radicals and lipid peroxidation in brain swelling induced by free fatty acids has been studied in brain slices and homogenates. The polyunsaturated fatty acids linoleic acid (18:2), linolenic acid (18:3), arachidonic acid (20:4), and docosahexaenoic acid (22:6)
Fish-oil emulsion (omega-3 polyunsaturated fatty acids) attenuates acute lung injury induced by intestinal ischemia-reperfusion through Adenosine 5'-monophosphate-activated protein kinase-sirtuin1 pathway.
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BACKGROUND
Activated macrophage infiltration into the lungs is paramount in the pathogenesis of acute lung injury (ALI) induced by intestinal ischemia-reperfusion (I/R). Omega-3 polyunsaturated fatty acid (ω-3 PUFA) is a potent activator of the Adenosine 5'-monophosphate-activated protein
Studies on anti-inflammatory activity of spice principles and dietary n-3 polyunsaturated fatty acids on carrageenan-induced inflammation in rats.
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The antioxidant spice principles curcumin and eugenol when given by gavage lowered the carrageenan-induced edema in the foot pads of rats. This lowering effect was dependent on the concentration, the time gap between the administration of spice principles and the induction of inflammation by
The effect of tocopherol and dimethyl sulfoxide on focal edema and lipid peroxidation induced by isocortical injection of ferrous chloride.
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Addition of iron salts to suspensions of subcellular organelles or polyunsaturated fatty acids results in the formation of oxidative free radicals with subsequent initiation of lipid peroxidation. Pretreatment of rats with anti-oxidants prevents peroxidation following isocortical ferrous chloride
Long-chain polyunsaturated fatty acids modulate lung inflammatory response induced by Pseudomonas aeruginosa in mice.
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Polyunsaturated fatty acid (PUFA) immunomodulatory properties have been studied extensively in chronic infections. Few studies have focused on acute infection; thus, PUFA effects in a mouse model of Pseudomonas aeruginosa (PA)-induced lung injury were evaluated. C57BL/6 mice were randomized to be
Dexamethasone effect on free fatty acid and diacylglycerol accumulation during experimentally induced vasogenic brain edema.
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Free fatty acids (FFA), diacylglycerols (DG), and water content were measured in the right and left cerebral hemispheres of rats with brain edema cryogenically induced to the right cerebral hemisphere. The effect of dexamethasone pretreatment was also studied. Twenty-four hours after lesion, maximal
Dietary n-3 polyunsaturated fatty acids increase oxidative stress in rats with intracerebral hemorrhagic stroke.
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Intake of n-3 polyunsaturated fatty acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) has been suggested to associate with an increased risk of hemorrhagic stroke. The present study was designed to investigate the hypothesis that EPA and DHA increase oxidative stress and
Phospholipid degradation and edema development in cold-injured rat brain.
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Development of brain edema following various pathological insults occurs after some delay. The mechanism of the delay is poorly understood. Using an in vivo model of cold-injury to study the time course of edema development, the present study indicates that the initiation of phospholipid degradation
A novel long chain polyunsaturated fatty acid, beta-Oxa 21:3n-3, inhibits T lymphocyte proliferation, cytokine production, delayed-type hypersensitivity, and carrageenan-induced paw reaction and selectively targets intracellular signals.
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A novel polyunsaturated fatty acid (PUFA), beta-oxa 21:3n-3, containing an oxygen atom in the beta position, was chemically synthesized, and found to have more selective biological activity than the n-3 PUFA, docosahexaenoic acid (22:6n-3) on cells of the immune system. Although beta-oxa 21:3n-3 was
Release of polyunsaturated fatty acids from phospholipids and alteration of brain membrane integrity by oxygen-derived free radicals.
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We studied the effects of oxygen-derived free radicals on the ultrastructure of brain cortical slices and the release of fatty acids from phospholipids of crude synaptosomes. Xanthine oxidase, hypoxanthine, and ADP-Fe3+, a free-radical-generating system, caused swelling of cellular processes and
Isolation of two anti-inflammatory and one pro-inflammatory polyunsaturated fatty acids from the brown seaweed Undaria pinnatifida.
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Two anti-inflammatory omega-3 polyunsaturated fatty acids (PUFAs) of stearidonic acid (SA) and eicosapentaenoic acid (EPA) and one pro-inflammatory omega-6 PUFA of arachidonic acid (AA) were isolated from the edible brown seaweed Undaria pinnatifida. SA was active against mouse ear inflammation
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