Anticholinesterase
Mostrando 1-12 de 68 artigos, teses e dissertações.
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1. Phytocomponents, Evaluation of Anticholinesterase Activity and Toxicity of Hydroethanolic Extracts of Parkia platycephala Benth.
This study evaluated the chemical composition, antioxidant and anticholinesterase activities, and the toxicity of hydroethanolic extracts of the Parkia platycephala Benth. Hot extraction with 70% hydroethanolic solution was used to obtain crude extracts of the leaf (LE), bark (BE), flower (FE), and seed (SE). Separation and identification of the compounds we
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. In vitro Antioxidant and Anticholinesterase Activities of Ouratea fieldingiana (Gardner) Eng. Leaf Extract and Correlation with Its Phenolics Profile with an in silico Study in Relation to Alzheimer’s Disease
Ouratea fieldingiana is a native medicinal plant from Northeastern Brazil and many biological properties are due to the phenolic constituents. The objective of this work was performing the characterization of O. fieldingiana leaf constituents to correlate with antioxidant and anticholinesterase activities by in vitro and in silico studies and thus contribute
Journal of the Brazilian Chemical Society. Publicado em: 2022
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3. Influence of in vitro micropropagation on lycorine biosynthesis and anticholinesterase activity in Hippeastrum goianum
ABSTRACT Hippeastrum goianum (Ravenna) Meerow, Amaryllidaceae, is an endemic species from the Cerrado, Brazil; there are only few studies about its chemistry or biological activity. This study aimed to investigate the occurrence of lycorine in extracts from in vitro H. goianum plantlets, as well as evaluate a possible inhibition of acetylcholinesterase. The
Rev. bras. farmacogn.. Publicado em: 27/05/2019
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4. Negative pressure pulmonary edema: report of case series and review of the literature
Resumo Justificativa e objetivos: O edema pulmonar por pressão negativa ocorre por aumento da pressão negativa intratorácica após inspiração contra via aérea superior obstruída. A pressão gerada é transmitida aos capilares pulmonares e supera a pressão de equilíbrio hidrostático, o que causa extravasamento de líquido para o parênquima pulmona
Rev. Bras. Anestesiol.. Publicado em: 25/04/2019
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5. Griseofulvin, Diketopiperazines and Cytochalasins from Endophytic Fungi Colletotrichum crassipes and Xylaria sp., and Their Antifungal, Antioxidant and Anticholinesterase Activities
One new natural product, 1-phenylethyl-O-a-L-rhamnopyranoside, together with eight known diketopiperazines and two benzene derivatives were isolated from the endophytic fungus Colletotrichum crassipes, whereas six known compounds including two griseofulvins, three cytochalasins and one dihydroisocoumarin were produced from the endophyte Xylaria sp., both end
J. Braz. Chem. Soc.. Publicado em: 2018-08
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6. Two Novel Donepezil-Lipoic Acid Hybrids: Synthesis, Anticholinesterase and Antioxidant Activities and Theoretical Studies
Alzheimer disease (AD) is a complex disease related to multiple pathogenic mechanisms. A strategy to develop effective drugs is based on the so-called multi-target directed ligands (MTDL) by using hybrid compounds. So, in the present study, we have designed and synthesized two hybrids, containing the indanone-piperidine moiety of donepezil, a drug approved f
J. Braz. Chem. Soc.. Publicado em: 2018-04
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7. Cholinesterases Inhibition by Novel cis- and trans-3-Arylaminocyclohexyl N,N-Dimethylcarbamates: Biological Evaluation and Molecular Modeling
The present study describes the synthesis, assessment of the anticholinesterase activity and the inhibition type of novel cis- and trans-3-arylaminocyclohexyl N,N-dimethylcarbamates. In vitro inhibition assay by Ellman's method with human blood samples showed that carbamates were selective for butyrylcholinesterase (BuChE) with compound concentration that in
J. Braz. Chem. Soc.. Publicado em: 2016-09
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8. Antimicrobial (including antimollicutes), antioxidant and anticholinesterase activities of Brazilian and Spanish marine organisms – evaluation of extracts and pure compounds
Abstract This work describes the antimicrobial, antioxidant and anticholinesterase activities in vitro of organic extracts from fourteen seaweeds, eleven sponges, two ascidians, one bryozoan, and one sea anemone species collected along the Brazilian and Spanish coast, as well as the isolation of the diterpene (4R, 9S, 14S)-4α-acetoxy-9β,14α-dihydroxydolas
Rev. bras. farmacogn.. Publicado em: 2015-12
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9. In vitro biological screening of the anticholinesterase and antiproliferative activities of medicinal plants belonging to Annonaceae
The aim of this research was to investigate the antiproliferative and anticholinesterase activities of 11 extracts from 5 Annonaceae species in vitro. Antiproliferative activity was assessed using 10 human cancer cell lines. Thin-layer chromatography and a microplate assay were used to screen the extracts for acetylcholinesterase (AchE) inhibitors using Ellm
Braz J Med Biol Res. Publicado em: 13/02/2015
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10. Biologically active compounds from cyanobacteria extracts: in vivo and in vitro aspects
An investigation was directed towards the antiacetylcholinesterase activity of the acid aqueous and methanolic extracts of five cyanobacterial taxa, which encompasses an enzymatic inhibition essay and the evaluation of the physiological responses of mice to cyanobacterial extracts along with toxicological observations. The strains Calothrix sp. CCIBt 3320, T
Rev. bras. farmacogn.. Publicado em: 14/05/2013
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11. Atividade anticolinesterásica e perfil químico de uma fração cromatográfica ativa do extrato etanólico das flores Bellis perennis L. (Asteraceae)
This work describes the isolation of an active flavonoid fraction and identification of isorhamnetin 3-O-β-D-(6''-acetyl)-galactopyranoside from flowers of B. perennis, and also the evaluation of anticholinesterase (AChE) activity of ethanolic extract from flowers (EEF) and the active fraction. The chemical structure of the flavonoid was defined on the basi
Quím. Nova. Publicado em: 2013
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12. Estudo dos alcaloides quinolônicos de Waltheria brachypetala Turcz : isolamento, determinação estrutural, biogênese, atividades fungitóxica e anticolinesterase / Estudo dos alcaloides quinolônicos de Waltheria brachypetala Turcz : isolamento, determinação estrutural, biogênese, atividades fungitóxica e anticolinesterase / Study of quinolone alkaloids from waltheria brachypetala turcz (malvaceae): isolation, structural elucidation, biogenesis and fungitoxical and anticholinesterase activities / Study of quinolone alkaloids from waltheria brachypetala turcz (malvaceae): isolation, structural elucidation, biogenesis and fungitoxical and anticholinesterase activities
Waltheria brachypetala Turcz (Malvaceae) é uma planta de ocorrência endêmica do nordeste brasileiro, sendo amplamente utilizada na medicina tradicional como agente anti-fúngico, anti-inflamatório, bem como para o tratamento de bronquite, laringite e distúrbios do sistema nervoso central. Neste trabalho de doutoramento objetivou-se a investigação dos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2012