Search results for "samp8"

showing 5 items of 5 documents

Modulation of brain PUFA content in different experimental models of mice.

2016

International audience; The relative amounts of arachidonic acid (AA) and docosahexaenoic acid (DHA) govern the different functions of the brain. Their brain levels depend on structures considered, on fatty acid dietary supply and the age of animals. To have a better overview of the different models available in the literature we here compared the brain fatty acid composition in various mice models (C57BL/6J, CD1, Fat-1, SAMP8 mice) fed with different n-3 PUFA diets (deficient, balanced, enriched) in adults and aged animals. Our results demonstrated that brain AA and DHA content is 1) structure-dependent; 2) strain-specific; 3) differently affected by dietary approaches when compared to gen…

0301 basic medicineMaleAgingClinical Biochemistryfat-1 miceHippocampuschemistry.chemical_compoundMice0302 clinical medicineCerebellumDocosahexaenoic acid (DHA)fatty-acid-compositionFood science2. Zero hungerchemistry.chemical_classificationCerebral CortexArachidonic Acidanxiety-like behaviordocosahexaenoic acidaccelerated mouse samBiochemistryDocosahexaenoic acidArachidonic acid (AA)Arachidonic acidFemaleFatty acid compositionSAMP8 miceBrain regionsPolyunsaturated fatty acidN-3 PUFAdiet-induced obesityDocosahexaenoic AcidsHypothalamusPrefrontal CortexBiology03 medical and health sciencesrat-brainDietary Fats UnsaturatedGenetic modelAnimals[SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology[ SDV.BBM ] Life Sciences [q-bio]/Biochemistry Molecular BiologyN 3 pufaBrain Chemistryage-related-changesFatty acidCell BiologyModels Theoreticalgene-expressiondepressive-like behaviorMice Inbred C57BL030104 developmental biologychemistry030217 neurology & neurosurgeryBrain StemProstaglandins, leukotrienes, and essential fatty acids
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Regulation of the p19(Arf)/p53 pathway by histone acetylation underlies neural stem cell behavior in senescence-prone SAMP8 mice.

2015

Brain aging is associated with increased neurodegeneration and reduced neurogenesis. B1/neural stem cells (B1-NSCs) of the mouse subependymal zone (SEZ) support the ongoing production of olfactory bulb interneurons, but their neurogenic potential is progressively reduced as mice age. Although age-related changes in B1-NSCs may result from increased expression of tumor suppressor proteins, accumulation of DNA damage, metabolic alterations, and microenvironmental or systemic changes, the ultimate causes remain unclear. Senescence-accelerated-prone mice (SAMP8) relative to senescence-accelerated-resistant mice (SAMR1) exhibit signs of hastened senescence and can be used as a model for the stud…

SenescenceMaleAgingHistonesMiceNeural Stem CellsNeurospheremedicineSubependymal zoneAnimalsstem cell nicheCyclin-Dependent Kinase Inhibitor p19Mice KnockoutNeuronsbiologyNeurodegenerationNeurogenesishistone acetyltransferasesBrainAcetylationCell BiologyOriginal Articlesmedicine.diseaseGenes p53Neural stem cellChromatinCell biologyadult neurogenesisOxidative StressHistoneImmunologybiology.proteinProtein Processing Post-TranslationalSAMP8 micehistone deacetylasesAging cell
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Efecto de las ciclooxigenasas en la biodisponibilidad del óxido nítrico en la respuesta vascular al tromboxano A2 en un modelo murino de envejecimien…

2018

El envejecimiento y la pérdida de los estrógenos durante la menopausia se asocian a una menor biodisponibilidad del NO, un aumento de los niveles de O2- vascular y un incremento de sustancias contráctiles, entre ellas el TXA2. Queda por determinar si los efectos deletéreos vasculares inducidos por el TXA2 durante el envejecimiento median una disminución en la biodisponibilidad de NO y un aumento en la producción de O2- y si están modulados por estrógenos. Para ello, se validó un modelo de envejecimiento vascular en ratonas con senescencia acelerada (SAM), con ratonas de la cepa SAMP8 con predisposición a la senescencia acelerada y ratonas SAMR1, con resistencia al desarrollo de senescencia …

ciclooxigenasaUNESCO::CIENCIAS MÉDICAS ::Farmacodinámica::Mecanismos de acción de los medicamentosUNESCO::CIENCIAS DE LA VIDA::Biología molecularanió superòxiddisfunció endotelialmenopausaenvellimentsamp8:CIENCIAS DE LA VIDA::Biología molecular [UNESCO]:CIENCIAS DE LA VIDA::Fisiología humana ::Fisiología cardiovascular [UNESCO]UNESCO::CIENCIAS DE LA VIDA::Fisiología humana ::Fisiología cardiovascularòxid nítricestrògens:CIENCIAS MÉDICAS ::Farmacodinámica::Mecanismos de acción de los medicamentos [UNESCO]
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EXTRA VIRGIN OLIVE OIL IMPROVES LEARNING AND MEMORY IN SAMP8 MICE

2011

Abstract. Polyphenols are potent antioxidants found in extra virgin olive oil (EVOO); antioxidants have been shown to reverse age- and disease-related learning and memory deficits. We examined the effects of EVOO on learning and memory in SAMP8 mice, an age-related learning/memory impairment model associated with increased amyloid- protein and brain oxidative damage. We administered EVOO, coconut oil, or butter to 11 month old SAMP8 mice for 6 weeks. Mice were tested in T-maze foot shock avoidance and one-trial novel object recognition with a 24 h delay. Mice which received EVOO had improved acquisition in the T-maze and spent more time with the novel object in one-trial novel object recogni…

food.ingredientSettore MED/09 - Medicina InternaSuperoxide dismutase activitymedicine.disease_causeMicechemistry.chemical_compoundfoodDietary Fats UnsaturatedMemorymedicineAnimalsPlant OilsMemory impairmentFood scienceMaze LearningOlive OilGeneral NeuroscienceCoconut oilBrainfood and beveragesGeneral MedicineGlutathioneT-mazeMice Mutant StrainsOxidative StressPsychiatry and Mental healthClinical PsychologychemistryBiochemistryPolyphenolButterCoconut OilExtra virgin olive oil learning memory object recognition oxidative stress SAMP8 T-mazeGeriatrics and GerontologyOxidative stressOlive oil
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Efectos del envejecimiento y el estrés oxidativo sobre la neurogénesis adulta en un modelo murino de senescencia acelerada

2015

El estudio exhaustivo de los mecanismos moleculares subyacentes a la disminución de la función de las células madre neurales (NSC) durante el envejecimiento, será fundamental en su futura aplicación terapéutica. El incremento en los niveles de estrés oxidativo, propio del proceso de envejecimiento, se ha postulado como una de las causas de daño en la función celular durante la senectud. Por otra parte, la cepa murina de envejecimiento acelerado SAMP8 (senescence-accelerated mouse prone), en la cual se ha descrito niveles elevados de estrés oxidativo, se considera un modelo válido para la investigación biogerontológica en el sistema nervioso central. A pesar del interés que ha suscitado la c…

histona desacetilasasepigenéticaSAMP8neurogénesis adultaUNESCO::CIENCIAS DE LA VIDAnicho de células madreenvejecimiento:CIENCIAS DE LA VIDA [UNESCO]
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