Galanthamine decreases genotoxicity and cell death induced by β-amyloid peptide in SH-SY5Y cell line
Willian Orlando Castillo,Andrés Felipe Aristizábal-Pachón,Ana P. Montaldi,Elza Tiemi Sakamoto-Hojo,Catarina Satie Takahashi +4 more
TLDR
It is demonstrated that in addition to inhibition of acetylcholinesterase (AChE), galanthamine exerts antigenotoxic properties which may improve the development of new diseases-modifying agents.Abstract:
Biochemically, Alzheimeŕs disease (AD) is characterized by the presence of abnormal deposition of beta amyloid peptide (Aβ(1-42)), which is generated by proteolytic processing from its precursor, the amyloid precursor protein (APP) in a non-physiological pathway The presence of Aβ(1-42) in the brain is strongly correlated with cognitive impairment, cholinergic deficiency, bioenergetics disruption, cell death and DNA damage Galanthamine is an acetylcholinesterase inhibitor (AChEI) used to symptomatic treatment of Alzheimeŕs disease (AD) Several studies have showed that galanthamine has antioxidant properties, anti-apoptotic action and also promotes neurogenesis; however, it is unknown whether galanthamine may present protection mechanisms against Aβ(1-42)-induced genomic instability To understand the mechanisms of this neuroprotection, we studied the effects of galanthamine on the cell toxicity and DNA strand breaks induced by Aβ(1-42) using a set of biomarkers such as clonogenic assay, cytokinesis block micronucleus cytome (CBNM-cyt) and comet assay The results showed that galanthamine treatments were capable to significantly reduce the Aβ(1-42)-induced cytotoxicity and genotoxicity In conclusion, this study demonstrated that in addition to inhibition of acetylcholinesterase (AChE), galanthamine exerts antigenotoxic properties This relevant property of galanthamine is worthwhile exploring further which may improve the development of new diseases-modifying agentsread more
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From dual binding site acetylcholinesterase inhibitors to allosteric modulators: A new avenue for disease-modifying drugs in Alzheimer's disease
Talita Perez Cantuaria Chierrito,Susimaire Pedersoli-Mantoani,Carlos Roca,Carlos Requena,Víctor Sebastián-Pérez,Willian Orlando Castillo,Natália Stanko Moreira,Concepción Pérez,Elza Tiemi Sakamoto-Hojo,Catarina Satie Takahashi,Jesús Jiménez-Barbero,F. Javier Cañada,Nuria E. Campillo,Ana Martínez,Ivone Carvalho +14 more
TL;DR: The design, synthesis and evaluation of non-toxic dual binding site AChEIs by hybridization of indanone and quinoline heterocyclic scaffolds are proposed and a potent allosteric modulator of AChe able to target cholinergic and non-cholinergic functions is found by fixing a specific AchE conformation.
Journal ArticleDOI
Lactuca capensis reverses memory deficits in Aβ1-42-induced an animal model of Alzheimer's disease.
Paula Alexandra Postu,Jaurès A. K. Noumedem,Oana Cioanca,Monica Hancianu,Marius Mihasan,Mitica Ciorpac,Dragos Lucian Gorgan,Brindusa Alina Petre,Lucian Hritcu +8 more
TL;DR: It is suggested that the methanolic extract could be a potent neuropharmacological agent against dementia via modulating cholinergic activity, increasing of BDNF levels and promoting antioxidant action in the rat hippocampus.
Journal ArticleDOI
α-Tocopherol Modulates Non-Amyloidogenic Pathway and Autophagy in an In Vitro Model of Alzheimer’s Disease: A Transcriptional Study
TL;DR: The treatment with α-tocopherol was able to reduce oxidative stress, restoring nuclear factor erythroid-derived 2-like 2 (Nrf2) and decreasing inducible nitric oxide synthase (iNOS) levels, as demonstrated by immunocytochemistry.
Journal ArticleDOI
DNA double-strand breaks: a potential therapeutic target for neurodegenerative diseases.
TL;DR: Evidence is provided that supports a critical role of DSBs in the pathogenesis of the neurodegenerative diseases such as Alzheimer's disease, Parkinson’s disease, and amyotrophic lateral sclerosis and the potential implications are discussed.
Journal ArticleDOI
In vitro evaluation of the protective effects of plant extracts against amyloid-beta peptide-induced toxicity in human neuroblastoma SH-SY5Y cells
Ana Luiza Sereia,Marcelo T. Oliveira,Adrivanio Baranoski,Leila Larisa Medeiros Marques,Fabianne Ribeiro,Raquel Garcia Isolani,Daniela Cristina de Medeiros,Danielly Chierrito,Danielle Lazarin-Bidóia,Acácio Antonio Ferreira Zielinski,Cláudio Roberto Novello,Celso Vataru Nakamura,Mário Sérgio Mantovani,João Carlos Palazzo de Mello +13 more
TL;DR: This is the first time that the neuroprotective effects of these fractions have been demonstrated and that the electropherogram fingerprints for the EAFs of G. ulmifolia, L. brasiliense, P. pluviosa and S. adstringens have been established.
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