Search results for "DENSITE"
showing 5 items of 5 documents
Upregulation of liver VLDL receptor and FAT/CD36 expressions in LDLR-/- apoB100/100 mice fed trans-10,cis-12 conjugated linoleic acid
2006
International audience; This study explores the mechanisms responsible for the fatty liver setup in mice fed trans-10,cis-12 conjugated linoleic acid (t10c12 CLA), hypothesizing that an induction of low density lipoprotein receptor (LDLR) expression is associated with lipid accumulation. To this end, the effects of t10c12 CLA treatment on lipid parameters, serum lipoproteins, and expression of liver lipid receptors were measured in LDLR(-/-) apoB(100/100) mice as a model of human familial hypercholesterolemia itself depleted of LDLR. Mice were fed t10c12 CLA over 2 or 4 weeks. We first observed that the treatment induced liver steatosis, even in the absence of LDLR. Mice treated for 2 weeks…
L' équipement automobile et les habitudes de déplacement domicile-travail dans l'espace français (hors outre-mer) selon le Recensement entr…
2020
Colloque : Peut-on se passer de la voiture hors des centres urbains ?, Guyancourt, FRANCE, 27-/02/2020 - 27/02/2020; Selon les recensements récents de la population (RP), la très grande majorité des actifs déclarent aller travailler en voiture. Cette source permet de discuter, pour la période 2006-2016, l'affirmation selon laquelle la voiture serait toujours plus indispensable hors des grands centres urbains où, au contraire, son utilisation et sa possession stagneraient. Le recensement a ses limites, mais il permet de cartographier finement les pratiques dans tout le pays et de les analyser selon des typologies géographiques adaptées aux problématiques du transport. Il permet aussi de…
Peroxydation in vivo et in vitro des acides gras polyinsaturés
2007
It is well admitted that polyunsaturated fatty acids are the most sensitive fatty acids to oxidative damage because of their high number of double bonds. This concept could not be confirmed by in vitro, animal, or human studies since unexpected or even contradictory results were obtained. The explanation of that is probably related to the methods evaluating lipid peroxidation whose relevance is not always established, but especially to movements of polyunsaturated fatty acids within lipoproteins that results in their protection. This short review aims to discuss the main results related to this topic.
Réseau Biovigilance flore en grandes culture
2007
National audience
Long-term modelling of weed control strategies: analysis of threshold-based options for weed species with contrasted competitive abilities
2002
A simple life-cycle-based demography model was adapted for two contrasting weed species (Alopecurus myosuroides and Poa annual. This model included a seed production function that accounted for population self-regulation through weed:weed interactions. The A. myosuroides version of the model was tested with field data. Long-term simulations of population demography were then performed to investigate the relationship between weed control strategies based on density thresholds and both the frequency of herbicide use and the long-term economic profitability. This study confirms that threshold-based weed management strategies are more cost-effective than spraying every year and may allow import…