DANIELA SOUZA FARIAS ITAO
Projetos de Pesquisa
Unidades Organizacionais
LIM/22 - Laboratório de Patolologia Cardiovascular, Hospital das Clínicas, Faculdade de Medicina
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- The action of phosphodiesterase-5 inhibitors on ?-amyloid pathology and cognition in experimental Alzheimer?s disease: A systematic review(2023) JUSTO, Alberto Fernando Oliveira; TOSCANO, Eliana Cristina de Brito; FARIAS-ITAO, Daniela Souza; SUEMOTO, Claudia KimieAlzheimer's disease (AD) is the most frequent cause of dementia worldwide. The etiology of AD is partially explained by the deposition of beta-amyloid in the brain. Despite extensive research on the pathogenesis of AD, the current treatments are ineffective. Here, we systematically reviewed studies that investigated whether phos-phodiesterase 5 inhibitors (PDE5i) are efficient in reducing the beta-amyloid load in hippocampi and improving cognitive decline in rodent models with beta-amyloid accumulation. We identified ten original studies, which used rodent models with beta-amyloid accumulation, were treated with PDE5i, and beta-amyloid was measured in the hippocampi. PDE5i was efficient in reducing the beta-amyloid levels, except for one study that exclusively used female rodents and the treatment did not affect beta-amyloid levels. Interestingly, PDE5i prevented cognitive decline in all studies. This study supports the potential therapeutic use of PDE5i for the reduction of the beta-amyloid load in hippocampi and cognitive decline. However, we highlight the importance of conducting additional experimental studies to evaluate the PDE5i-related molecular mechanisms involved in beta-amyloid removal in male and female animals.