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Acides gras polyinsaturés et vision : qualité des compléments alimentaires à base d'oméga-3 Inra
Acar, N..
Tipo: Conference Paper Palavras-chave: ACIDES GRAS POLYINSATURES; OEIL; COMPLEMENTS ALIMENTAIRES; OMEGA-3.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20089ddd448e&uri=/notices/prodinra1/2010/04/
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Branched-chain fatty acids, increased in tears of blepharitis patients, are not toxic for conjunctival cells Inra
Joffre, C.; Souchier, M.; Leclere, L.; Buteau, B.; Grégoire, S.; Lizard, G.; Montange, T.; Acar, N.; Bron, A.; Creuzot Garcher, C.; Diebold, Y.; Bretillon, L..
Aim: The composition of the meibum of blepharitis patients is characterised by increased levels of branched-chain fatty acids (BCFAs) that return to normal values in patients treated with cyclins and lid hygiene. The aim of this study was to determine if BCFAs had toxic effects on conjunctival cells related to the disease.Methods: Chang and IOBA-NHC conjunctival human cells were treated with BCFAs (isoC16 and isoC20) or palmitic acid as a control for 4 h or 24 h at 50 μM or 100 μM. Morphological and functional changes were investigated by measuring mitochondrial dehydrogenase activity, cell permeability, mitochondrial depolarisation, chromatin condensation, IL-1β and reactive oxygen species production.Results: None of the fatty acids modified the...
Tipo: Journal Article Palavras-chave: DRY EYE; BENZALKONIUM CHLORIDE; EPITHELIAL-CELLS; MUSCLE CELLS; LIPID LAYER; APOPTOSIS; MEMBRANE; MARKER.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20105cdf51fe&uri=/notices/prodinra1/2010/07/
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Differential effect of maternal diet supplementation with alpha-linolenic adcid or n-3 long-chain polyunsaturated fatty acids on glial cell phosphatidylethanolamine and phosphatidylserine fatty acid profile in neonate rat brains Inra
Destaillats, F.; Joffre, C.; Acar, N.; Joffre, F.; Bezelgues, J.B.; Pasquis, B.; Cruz-Hernandez, C.; Rezzi, S.; Montoliu, I.; Dionisi, F.; Bretillon, L..
Background: Dietary long-chain polyunsaturated fatty acids (LC-PUFA) are of crucial importance for the development of neural tissues. The aim of this study was to evaluate the impact of a dietary supplementation in n-3 fatty acids in female rats during gestation and lactation on fatty acid pattern in brain glial cells phosphatidylethanolamine (PE) and phosphatidylserine (PS) in the neonates.Methods: Sprague-Dawley rats were fed during the whole gestation and lactation period with a diet containing either docosahexaenoic acid (DHA, 0.55%) and eicosapentaenoic acid (EPA, 0.75% of total fatty acids) or α-linolenic acid (ALA, 2.90%). At two weeks of age, gastric content and brain glial cell PE and PS of rat neonates were analyzed for their fatty acid and...
Tipo: Journal Article Palavras-chave: POLYUNSATURED FATTY ACID; GESTATION; LACTATION; NEURAL TISSUES; DIETARY SUPPLEMENTATION.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20108732ec2d&uri=/notices/prodinra1/2010/07/
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Effect of dietary omega-3 and omega-6 fatty acids on IOP elevation, electroretinographic changes and retinal ganglion cell loss in a laser-induced rat model of glaucoma Inra
Schnebelen, N.; Pasquis, B.; Salinas-Navarro, M.; Joffre, C.; Creuzot Garcher, C.; Vidal-Sanz, M.; Bron, A.; Bretillon, L.; Acar, N..
Purpose:To test the efficacy of dietary omega-3 and omega-6 fatty acids in a rat model of glaucoma induced by laser photocoagulation.Methods:Male Sprague Dawley rats were fed for 3 months with a diet containing either: 1) 17% of omega-3 fatty acids (10% EPA + 7% DHA), 2) 10% of omega-6 fatty acids (as GLA), or 3) a combination of both omega-3 and omega-6 fatty acids (10% EPA + 7% DHA + 10% GLA), by comparison with a control group of animals fed with a standard diet deprived of EPA, DHA and GLA (n=10 in each group). After 3 months of diet, glaucoma was induced in one eye of each animal by laser photocoagulation (532nm) of the episcleral veins, the trabeculum and the limbal veins. During the 3 following months, the animals were fed on the same diets, IOP was...
Tipo: Journal Article Palavras-chave: ELECTRORETINOGRAPHY; NON CLINICAL; GANGLION CELLS; LIPIDS; POLYUNSATURED FATTY ACID.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009681ee7db&uri=/notices/prodinra1/2010/07/
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FA composition of plasma, red blood cell, and liver phospholipids of newborn piglets fed trans isomers of alpha-linolenic acid Inra
Acar, N.; Chardigny, J.M.; Berdeaux, O.; Almanza, S.; Sébédio, J.L..
The effects of dietary cis and trans alpha-linolenic acid (18:3n-3) on the FA composition of plasma, red blood cell, and liver phospholipids were studied in newborn piglets. Animals were fed for 14 d with one of three diets: a control diet (group A) containing cis 18:3n-3 at a level of 2.0% of total FA, a diet (group B) in which a part of the 18:3n-3 acid was isomerized (1.3% of cis 18:3n-3 and 0.7% of trans 18:3n-3), or a diet (group C) with 2.0% cis 18:3n-3 and 0.7% trans 18:3n-3. Feeding animals with diets containing trans 18:3n-3 resulted in the presence of trans isomers of 18:3n-3, trans isomers of EPA, and trans isomers of DHA in phospholipids; however, the level of total trans n-3 PUFA in tissues was less than 0.3% of total tissue FA. In group B,...
Tipo: Journal Article Palavras-chave: POLYUNSATURATED FATTY-ACIDS; INFANT FORMULAS; GEOMETRICAL-ISOMERS; LIPIDS; RATS; OIL.
Ano: 2002 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008c2b008a4&uri=/notices/prodinra1/2008/11/
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Primary open-angle glaucoma: association with cholesterol 24S-hydroxylase (CYP46A1) gene polymorphism and plasma 24-hydroxycholesterol levels Inra
Fourgeux, C.; Lucy, M.; Björkhem, I.; Diczfalusy, U.; Joffre, C.; Acar, N.; Creuzot Garcher, C.; Bron, A.; Bretillon, L..
Purpose. Genetics has made significant contributions to the study of glaucoma over the past few decades. Cholesterol-24S-hydroxylase (CYP46A1) is a cholesterol-metabolizing enzyme that is especially expressed in retinal ganglion cells. CYP46A1 and its metabolic product, 24S-hydroxycholesterol, have been linked to neurodegeneration. A single-nucleotide polymorphism (SNP) in the CYP46A1 gene, designated as rs754203 and associated with Alzheimer disease, was evaluated as a genetic risk factor for primary open-angle glaucoma (POAG), as well as plasma 24S-hydroxycholesterol levels. Methods. The frequency of the CYP46*C and CYP46*T alleles was analyzed in 150 patients with POAG and 118 control subjects. Plasma 24S-hydroxycholesterol levels were quantified. Sex,...
Tipo: Journal Article Palavras-chave: NORMAL-TENSION GLAUCOMA; ALZHEIMERS-DISEASE; ; PRESSURE; RISK-FACTORS.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010b05f88bb&uri=/notices/prodinra1/2010/07/
Registros recuperados: 6
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