Search results for "670"
showing 9 items of 49 documents
The transformation of the Horatian Sabine farm in Persius? Satire 6
2020
The purpose of this article is to focus on the motif of the countryside in Roman satire. In particular, it aspires to study the way the Sabine farm is delineated in Horace's Satire 2.6 and later in his Epistles, in order to elucidate the evolution of this motif in Persius? 6th Satire. In this poem, Persius addresses Caesius Bassus, who retreats to Sabine to seek poetic inspiration, but seems trapped in the paths of earlier poetry and cannot attain bliss, while the poet achieves it in the port of Luna.
Mécanisme d’absorption intestinale des acides gras à longue chaîne : rôle émergent du CD36
2012
International audience; Excessive lipid intake, associated with a qualitative imbalance, favors the development of obesity and associated diseases. Among the organs involved in lipid homeostasis, the small intestine remains the most poorly known although it is responsible for the lipid bioavailability and largely contributes to the regulation of postprandial hypertriglyceridemia. The mechanism of long chain fatty acid (LCFA) intestinal absorption is not totally elucidated. The synthesis of recent literature indicates that the intestine is able to adapt its absorption capacity to the fat content of the diet. This adaptation takes place through a fat-coordinated induction of LBP and apolipopr…
Complémentarité et équilibre de l’apport alimentaire en protéines et en lipides
2003
The nature and level of dietary protein is liable to influence cholesterol and essential fatty acid (EFA) metabolism. Dietary vegetable protein, particularly the undigested fraction, decreases intestinal cholesterol absorption, increases the faecal excretion of steroids, and enhances the catabolism of cholesterol-carrying lipoproteins by increasing the activity or number of LDL receptors. However, the hypocholesterolemic effect of protein may be due to the presence of non-protein components and hence the purity degree of the selected protein, and the concomitant addition or not of cholesterol. Dietary proteins with different amino acid composition may modulate the secretion of hormones (e.g…
Rôle des lipides dans la régulation du comportement alimentaire
2008
Obesity constitutes a major public health problem for the 21 st Century, with its epidemic spread worldwide, particularly in children. The overconsumption of fatty foods greatly contributes to this phenomenon. Rodents and humans display a spontaneous preference for lipid-rich foods. But why are lipids so attractive? What are the molecular mechanisms involved? The purpose of this mini review is to explore few basic questions raised by recent data providing evidences on the relationships between dietary lipids and feeding behavior.
Inflammation et immunité : implications dans l’obésité et le diabète de type 2
2006
The evidences have been increasingly accumulated on the implication of inflammatory mediators like tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in the pathological states related to insulin resistance like obesity, type 2 diabetes and atherosclerosis. There seems a link between insulin resistance and these pro-inflammatory agents, secreted by macrophages and adipocytes. Th (helper) cells are differentiated into either Th1 or Th2 phenotypes. It is generally considered that Th1 phenotype is pro-inflammatory whereas Th2 phenotype exerts anti-inflammatory (protective) effects. The upregulation of Th1 phenotype may aggravate these pathologies. One of the adipokines, i.e., adiponectin…
Cholesterol and ocular pathologies: focus on the role of cholesterol-24S-hydroxylase in cholesterol homeostasis
2015
The retina is responsible for coding the light stimulus into a nervous signal that is transferred to the brain via the optic nerve. The retina is formed by the association of the neurosensory retina and the retinal pigment epithelium that is supported by Bruch’s membrane. Both the physical and metabolic associations between these partners are crucial for the functioning of the retina, by means of nutrient intake and removal of the cell and metabolic debris from the retina. Dysequilibrium are involved in the aging processes and pathologies such as age-related macular degeneration, the leading cause of visual loss after the age of 50 years inWestern countries. The retina is composed of severa…
Perception oro-sensorielle des lipides alimentaires et obésité
2016
International audience; The gustation is a dynamic system able to rapid physiological adaptations in response to on-going environmental changes that characterize our feed (rhythm, quality, quantity). Based on the modulation of taste sensitivity thresholds, this homeostatic system contributes to build the feeding behavior by driving the food choices. Therefore, a dysfunction of this regulatory system might impact on dietary habits and thus, ultimately, on health. Consistent with this assumption, recent data report that a diet-induced obesity is associated both with a dysfunction of the oral fat detection system and a preferential consumption of fat-rich diets in rats and mice. In humans, a s…
Effet anti-obésité des CLA : mythe ou réalité ?
2005
Conjugated linoleic acids (CLA) are positional and geometric isomers of linoleic acid. Inclusion of CLA in the diet provokes a rapid and marked decrease in body weight gain and adiposity in mice leading to a lipoatrophic syndrome. However, CLA supplementation raised fasting blood glucose and insulin concentrations and was associated with severe insulin resistance and liversteatosis. Conflicting results have been reported with regard to reduction of fat mass in humans. We have reviewed the publish literature regarding the effect of CLA on body composition in humans and animal models. These studies indicate that t10-c12 was the isomer that reduced adipose fat storage, however it also increase…
Reescritura de las fuentes y sustituciones léxicas en el De Proprietate Animalium de Manuel Files: ¿variación estilística o cambio de nivel lingüísti…
2020
El De Proprietate Animalium de Manuel Files es un poema didáctico del s. XIV que parafrasea libremente varias fuentes literarias de contenido zoológico, entre las que destaca la Historia Animalium de Claudio Eliano. Un análisis detallado de los procedimientos de sustitución léxica realizado por el autor, apoyado en la consulta de los diccionarios bizantinos, permite reconocer su originalidad compositiva, la riqueza expresiva de su vocabulario poético, pero también la clara conciencia de la existencia de diferentes niveles de lengua y de los muy diversos registros utilizados por el autor.