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Title: Acetylcholinesterase inhibitory activity, anti-inflammatory, and neuroprotective potential of Hippeastrum psittacinum (Ker Gawl.) herb (Amaryllidaceae)
Authors: Gasca, Cristian A.
Moreira, Natalia C. S.
Almeida, Fernanda C. de
Gomes, João Victor Dutra
Castillo, Willian O.
Fagg, Christopher William
Magalhães, Pérola Oliveira
Bazzo, Yris Maria Fonseca
Sakamoto-Hojo, Elza
Medeiros, Yanna K. de
Borges, Warley de Souza
Silveira, Dâmaris
Assunto:: Amaryllidaceae
Alcalóides
Acetilcolinesterase
Agentes antiinflamatórios
Alzheimer, Doença de
Issue Date: 2020
Publisher: Elsevier Ltd.
Citation: GASCA, Cristian A. et al. Acetylcholinesterase inhibitory activity, anti-inflammatory, and neuroprotective potential of Hippeastrum psittacinum (Ker Gawl.) herb (Amaryllidaceae). Food and Chemical Toxicology, v. 145, 111703, 2020. DOI: https://doi.org/10.1016/j.fct.2020.111703.
Abstract: Hippeastrum psittacinum, Amaryllidaceae, is used in traditional medicine as a purgative, aphrodisiac, and anticough remedy. The ethanol extract (EE) and alkaloid-rich fractions (ARF) from H. psittacinum bulbs were evaluated for their acetylcholinesterase (AChE) inhibition. The EE cytotoxic and anti-inflammatory effects in RAW 264.7 cells, and the neuroprotective and genotoxic activities in SH-SY5Y cells, were also estimated. Fifteen alkaloids were identified in the EE by gas chromatography–mass spectrometry. ARFs were less active for AChE inhibition than EE. The viability of both cell lines was higher than 70% with EE concentrations below 25 μg/mL. The EE decreased nitrite release in RAW cells stimulated with lipopolysaccharide, showing values of 83, 67, and 53% at 6.25, 12.5, and 25 μg/mL, respectively. Furthermore, the EE partially protected SH-SY5Y cells from hydrogen peroxide-mediated deleterious effects by approximately 50% at the same concentrations. The micronucleus assays showed that the extract caused chromosomal missegregation at concentrations above 12.5 μg/mL. The in silico analyses showed that some alkaloids presented properties of permeation of the blood-brain barrier and the intestine. Our findings present new evidence of the potential of H. psittacinum potential as an AChE inhibitor, as well as an anti-inflammatory and neuroprotective agent.
DOI: https://doi.org/10.1016/j.fct.2020.111703
metadata.dc.relation.publisherversion: https://www.sciencedirect.com/science/article/abs/pii/S0278691520305937
Appears in Collections:FAR - Artigos publicados em periódicos
FCE-FAR - Artigos publicados em periódicos
FMD - Artigos publicados em periódicos e preprints

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