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Do Dinophysis spp. come from the "open sea" along the French Atlantic coast? IRD
Delmas, D.; Herbland, Alain; Maestrini, S.Y..
A study was conducted with the aim of showing which environmental conditions promote an increase in #Dinophysis$ cells in a land-locked embayment with shellfish installations. From may 1989 to september 1991, vertical profiles were taken of temperature, salinity, nutrients and chlorophyll-a, and counts of phytoplankton species composition were made during late spring and summer. In the strait separating this area from the open sea, residual tital currents are from offshore to nearshore. Significant thermocline ... and stable stratification of the water column were required for #Dinophysis$ to exceed 1000 cell L-1. #Dinophysis$ spp. were more abundant in the "thermocline layer", scarce below this layer and absent near the bottom. These stratified...
Tipo: Text Palavras-chave: PHYTOPLANCTON; DENSITE DE POPULATION; CROISSANCE; FACTEUR ECOLOGIQUE; RELATION ESPECE ENVIRONNEMENT.
Ano: 1993 URL: http://www.documentation.ird.fr/hor/fdi:42789
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Effects of oxysterols on cell viability, inflammatory cytokines, VEGF, and reactive oxygen species production on human retinal cells: cytoprotective effects and prevention of VEGF secretion by resveratrol Inra
Dugas, B.; Charbonnier, S.; Baarine, M.; Ragot, K.; Delmas, D.; Menetrier, F.; Lherminier, J.; Malvitte, L.; Khalfaoui, T.; Bron, A.; Creuzot Garcher, C.; Latruffe, N.; Lizard, G..
Background and aimsOxysterols are assumed to play important roles in age-related macular degeneration, a major cause of blindness. So we characterized the cytotoxic, oxidative, inflammatory, and angiogenic activities of oxysterols (7β-hydroxycholesterol (7β-OH), 7-ketocholesterol (7KC), 25-hydroxycholesterol (25-OH)) in human retinal ARPE-19 cells, and evaluated the protective effects of resveratrol (Rsv: 1 μM), a polyphenol from red wine.MethodsARPE-19 cells were treated with 7β-OH, 7KC, or 25-OH (5–40 μg/mL; 24–48 h) without or with Rsv. Cell viability was determined using trypan blue and the MTT assay. Cell death was characterized by electron microscopy and in situ detection of activated caspases with fluorochrome-labeled inhibitors of caspases....
Tipo: Journal Article Palavras-chave: CELLULES RÉTINIENNES; DEGENERESCENCE MACULAIRE; DMLA ARPE-19 CELLS; CASPASE-INDEPENDENT CELL DEATH; INFLAMMATORY CYTOKINES; OXYSTEROLS; PHOSPHOLIPIDOSIS; RESVERATROL; REACTIVE OXYGEN SPECIES; VEGF.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201135a1139e&uri=/notices/prodinra1/2011/06/
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Réseau trophique du bassin de Marennes-Oléron (rapport 1996). Région Poitou-Charentes ArchiMer
Bacher, Cedric; Blanchard, Gerard; Bougrier, Serge; Cariou-le Gall, Valerie; Delmas, D.; Deslous Paoli, Jean-marc; Dinet, A.; Garet, Marie-josee; Geairon, Philippe; Jonquieres, Gerard; Laisne, A.; Maffei, E.; Montagna, P. A.; De Montaudouin, Xavier; Morin, S.; Richard, P.; Riera, Pascal; Sauriau, Pierre-guy; Vrignaud, N..
Les cartographies annuelles des biomasses microphytobenthiques ont été réalisées pour le bassin de Marennes-Oléron. Parallèlement les cartographies des caractéristiques sédimentaires ont été établies simultanément aux cartes d'abondance et biomasse macrofauniques en portant un effort particulier sur les densités des compétiteurs des huîtres notamment les Crépidules. Simultanément les études des mécanismes contrôlant le réseau trophique sur la vasière de Brouage ont été poursuivies notamment les relations entre les flux de sels nutritifs et le microphytobenthos. L'importance de ce dernier compartiment dans la nutrition de l'huître a été clairement mis en évidence par l'utilisation des traçeurs isotopiques naturels. Enfin, les caractéristiques de filtration...
Tipo: Text Palavras-chave: Bassin de Marennes Oléron; Microphytobenthos; Physiologie; Crassostrea gigas; Crépidules; Modèle réseau trophique; Cartographie; Charente-Maritime.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00102/21294/18911.pdf
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