6533b85bfe1ef96bd12bb5c1
RESEARCH PRODUCT
Reductive stress in young healthy individuals at risk of Alzheimer disease.
Ana LloretFrancisco DasíJose ViñaDolores AlonsoJose M. LainezEsther GiraldoMari-carmen Badíasubject
Apolipoprotein EAdultMaleAntioxidantGenotypemedicine.medical_treatmentApolipoprotein E4DiseaseBiologymedicine.disease_causeBiochemistryAntioxidantschemistry.chemical_compoundAlzheimer DiseaseRisk FactorsPhysiology (medical)medicineHumansAlleleAlleleschemistry.chemical_classificationGlutathione PeroxidaseGlutathione peroxidaseGlutathioneMiddle Agedmedicine.diseaseGlutathioneOxidative StresschemistryImmunologyFemaleLipid PeroxidationAlzheimer's diseaseOxidative stressBiomarkersdescription
Oxidative stress is a hallmark of Alzheimer disease (AD) but this has not been studied in young healthy persons at risk of the disease. Carrying an Apo e4 allele is the major genetic risk factor for AD. We have observed that lymphocytes from young, healthy persons carrying at least one Apo e4 allele suffer from reductive rather than oxidative stress, i.e., lower oxidized glutathione and P-p38 levels and higher expression of enzymes involved in antioxidant defense, such as glutamylcysteinyl ligase and glutathione peroxidase. In contrast, in the full-blown disease, the situation is reversed and oxidative stress occurs, probably because of the exhaustion of the antioxidant mechanisms just mentioned. These results provide insights into the early events of the progression of the disease that may allow us to find biomarkers of AD at its very early stages.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-10-01 | Free radical biologymedicine |