Etude du developpement du metabolisme oxydatif du tubule renal de rat: regulation nutritionnelle et hormonale au cours de la periode de sevrage

SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : T 84343 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Species Differences in the Effects of Bezafibrate as a Potential Treatment of Mitochondrial Disorders

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Mitochondrial Genetic Disorders: Cell Signaling and Pharmacological Therapies

Mitochondrial fatty acid oxidation (FAO) and respiratory chain (RC) defects form a large group of inherited monogenic disorders sharing many common clinical and pathophysiological features, including disruption of mitochondrial bioenergetics, but also, for example, oxidative stress and accumulation of noxious metabolites. Interestingly, several transcription factors or co-activators exert transcriptional control on both FAO and RC genes, and can be activated by small molecules, opening to possibly common therapeutic approaches for FAO and RC deficiencies. Here, we review recent data on the potential of various drugs or small molecules targeting pivotal metabolic regulators: peroxisome proliferator activated receptors (PPARs), sirtuin 1 (SIRT1), AMP-activated protein kinase (AMPK), and protein kinase A (PKA)) or interacting with reactive oxygen species (ROS) signaling, to alleviate or to correct inborn FAO or RC deficiencies in cellular or animal models. The possible molecular mechanisms involved, in particular the contribution of mitochondrial biogenesis, are discussed. Applications of these pharmacological approaches as a function of genotype/phenotype are also addressed, which clearly orient toward personalized therapy. Finally, we propose that beyond the identification of individual candidate drugs/molecules, future pharmacological approaches should consider their combination, which could produce additive or synergistic effects that may further enhance their therapeutic potential

Resveratrol and Myopathy

Resveratrol is a natural polyphenolic compound produced by plants under various stress conditions. Resveratrol has been reported to exhibit antioxidant, anti-inflammatory, and anti-proliferative properties in mammalian cells and animal models, and might therefore exert pleiotropic beneficial effects in different pathophysiological states. More recently, resveratrol has also been shown to potentially target many mitochondrial metabolic pathways, including fatty acid β-oxidation or oxidative phosphorylation, leading to the up-regulation of the energy metabolism via signaling pathways involving PGC-1α, SIRT1, and/or AMP-kinase, which are not yet fully delineated. Some of resveratrol beneficial effects likely arise from its cellular effects in the skeletal muscle, which, surprisingly, has been given relatively little attention, compared to other target tissues. Here, we review the potential for resveratrol to ameliorate or correct mitochondrial metabolic deficiencies responsible for myopathies, due to inherited fatty acid β-oxidation or to respiratory chain defects, for which no treatment exists to date. We also review recent data supporting therapeutic effects of resveratrol in the Duchenne Muscular Dystrophy, a fatal genetic disease affecting the production of muscle dystrophin, associated to a variety of mitochondrial dysfunctions, which likely contribute to disease pathogenesis

Anomalies de la β-oxydation mitochondriale des acides gras

Certaines anomalies de la β-oxydation mitochondriale des acides gras (β-OAG) apparaissent jouer un rôle majeur dans la pathogenèse de plusieurs maladies communes (diabète, obésité, maladies cardiaques). Des déficits génétiques touchant la β-OAG sont également à l’origine d’un ensemble de maladies rares de phénotypes très variables, allant de défaillances cardio-hépatiques fatales chez le nourrisson à des myopathies chez l’adulte. Ces différentes pathologies sont révélatrices du rôle clé de la β-OAG dans plusieurs organes à forts besoins en ATP (cœur, muscle, foie, rein). Des données récentes suggèrent que la β-OAG participerait également à d’autres fonctions complexes (modifications de la chromatine, contrôle de l’activité de cellules souches, devenir de cellules cancéreuses)

L’acide méthylmalonique

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Potentiel thérapeutique et mécanismes d'action du resvératrol dans les déficits héréditaires de la chaîne respiratoire

Pas de résumé en françaisPas de résumé en anglaisPARIS5-Bibliotheque electronique (751069902) / SudocSudocFranceF