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Extracts from Quercus sp acorns exhibit in vitro neuroprotective features through inhibition of cholinesterase and protection of the human dopaminergic cell line SH-SY5Y from hydrogen peroxide-induced cytotoxicity

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dc.contributor.authorCustódio, Luísa
dc.contributor.authorPatarra, João
dc.contributor.authorAlberício, Fernando
dc.contributor.authorNeng, Nuno Rosa
dc.contributor.authorNogueira, José Manuel F.
dc.contributor.authorRomano, Anabela
dc.date.accessioned2015-06-18T10:12:40Z
dc.date.available2015-06-18T10:12:40Z
dc.date.issued2013
dc.description.abstractIn this work non polar (hexane) and polar (methanol and hot water) extracts of cork oak (Quercus suber) and holm oak (Quercus ilex) acorns were evaluated for the first time for in vitro neuroprotective properties, by determining their in vitro inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) and their capacity to attenuate hydrogen peroxide-induced injury in the human dopaminergic cell line SH-SY5Y. Total content of phenolics, tannins and flavonoids, HPLC profile of the main phenolic compounds and antioxidant activity were also determined. The methanol extracts showed inhibitory activities against AChE and BChE. The best results toward AChE were obtained with cork oak extract (69.4% inhibition at the concentration of 1 mg/ml), while for BChE the highest inhibition (46% inhibition at the concentration of I mg/ml) was obtained with holm oak. Moreover, methanol extracts were able to prevent oxidative stress-induced cytotoxicity in SH-S5SY cells. The methanol extract of holm oak exhibited the highest RSA, with values of 63.8% and 49.7% on DPPH and ABTS radicals at the concentration of 1 mg/ml, respectively. In general the extracts exhibited no reducing potential. The methanol extract from cork oak acorns had the highest content in phenolic compounds (25.2 mg GAE/g, DW), while the water extracts had the maximum level of flavonoids (1.7 mg RE/g, DW). Tannins were present in higher amounts in the water extract of holm oak (91.6 CE/g, DW). The main compounds in the methanol extract from holm oak acorns were (-)-epicatechin and catechol, while gallic acid and (+)-catechin were the main constituents of the methanol extract from cork oak acorns. Our results indicate that cork and holm oak acorns provide a valuable source of biomolecules useful for alleviating symptoms associated with Alzheimer's disease and other neurodegenerative ailments. (C) 2012 Elsevier B.V. All rights reserved.
dc.identifier.doihttps://dx.doi.org/10.1016/j.indcrop.2012.12.011
dc.identifier.issn0926-6690
dc.identifier.otherAUT: ARO01015;
dc.identifier.urihttp://hdl.handle.net/10400.1/6450
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.isbasedonP-005-32T
dc.subjectAcorns
dc.subjectAlzheimer’s
dc.subjectCholinesterase
dc.subjectDementia
dc.subjectMediterranean trees
dc.subjectNeurological disorder
dc.titleExtracts from Quercus sp acorns exhibit in vitro neuroprotective features through inhibition of cholinesterase and protection of the human dopaminergic cell line SH-SY5Y from hydrogen peroxide-induced cytotoxicity
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage120
oaire.citation.startPage114
oaire.citation.titleIndustrial Crops and Products
oaire.citation.volume45
person.familyNameCustódio
person.familyNameRomano
person.givenNameLuísa
person.givenNameAnabela
person.identifier.ciencia-id791B-C560-AEA2
person.identifier.ciencia-id8A18-7E9A-3B0E
person.identifier.orcid0000-0003-4338-7703
person.identifier.orcid0000-0002-7204-7428
person.identifier.ridM-6101-2013
person.identifier.scopus-author-id15831018900
person.identifier.scopus-author-id56249997600
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationf9cfed0f-6b67-413e-988c-ac7397183471
relation.isAuthorOfPublicatione3343b60-17d3-4f5e-a2bf-06f26da69206
relation.isAuthorOfPublication.latestForDiscoveryf9cfed0f-6b67-413e-988c-ac7397183471

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