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Zileuton restores memory impairments and reverses amyloid and tau pathology in aged AD mice #MMPMID24973121
Di Meco A; Lauretti E; Vagnozzi AN; Praticò D
Neurobiol Aging 2014[Nov]; 35 (11): 2458-64 PMID24973121show ga
The enzyme 5-lipoxygenase (5LO) is up-regulated in Alzheimer?s disease (AD), and its pharmacological blockade with zileuton slows down the development of the AD-like phenotype in young AD mice. However, its efficacy after the AD pathology is established is unknown. To this end, starting at 12-months of age triple transgenic mice (3xTg) received zileuton, a selective 5LO inhibitor, or placebo for 3 months, and then the effect of this treatment on behavior, amyloid and tau pathology assessed. While mice on placebo showed worsening of their memory, treated mice performed even better than at baseline. Compared with placebo, treated mice had significant less A? deposits and tau phosphorylation secondary to reduced ?-secretase and CDK-5 activation, respectively. Our data provide novel insights into the disease-modifying action of pharmacologically inhibiting 5LO as a viable AD therapeutic approach. They represent the successful completion of preclinical studies for the development of this class of drug as clinically applicable therapy for the disease.