Atividade de alcaloides inibidores da acetilcolinesterase no tratamento da doença de Alzheimer: uma revisão sistemática
DOI:
https://doi.org/10.12662/2317-3076jhbs.v10i1.4196.p1-10.2022Keywords:
Alcaloides, Colinesterase, Acetilcolinesterase, Alzheimer, Doenças neurodegenerativasAbstract
Objetivo: descrever a atividade de inibição da enzima acetilcolinesterase (AChE), por meio de ativos extraídos de alcaloides naturais. Metodologia: este estudo se configura como uma revisão sistemática da literatura, no período de janeiro de 2015 a setembro de 2021, nas bases de dados PUBMED, LILACS e SCIENCE DIRECT, com os descritores Acetylcholinesterase; Alzheimer; Alkaloids. As informações obtidas foram tabuladas para avaliação dos alcaloides inibidores da acetilcolinesterase. Resultados: de 563 artigos encontrados, 17 foram utilizados. Dois deles relataram a atividade de alcaloides inibidores da AChE por meio de ensaios clínicos, enquanto os demais a realizaram por testes in vitro. De 160 substâncias estudadas, 48 apresentaram atividade anticolinesterásica, as quais foram avaliadas de acordo com a sua concentração inibitória média (IC50). Discussão: a eficiência dos alcaloides como inibidores da AChE, provavelmente está relacionada com sua carga positiva no pH do organismo e sua boa biodisponibilidade, tendo como consequência uma atividade duradoura in vivo, em comparação com os medicamentos sintéticos. Conclusão: no presente estudo, foi possível observar uma grande diversidade de substâncias alcalóidicas antiAChE. Contudo, torna-se necessária a realização de mais ensaios in vivo e in vitro para a constatação efetiva da atividade dessas moléculas.Downloads
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