Antioxidantes dietéticos: controvérsias e perspectivas
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000200036 |
Resumo: | The generation of reactive oxygen and nitrogen species (ROS and RNS) during metabolism is capable of damaging cellular biomolecules. To be protected against oxidative injury, cells evolved complex cellular defense mechanisms and the capability to use exogenous antioxidants to eliminate ROS/RNS. The potential role of micronutrients as antioxidants (vitamin C, vitamin E, carotenoids and poliphenols) has stimulated intense research efforts. In various human supplementation studies, however, these compounds presented pro-oxidant effects at high doses for most risk groups. Therefore, more studies about the bioavailability, tissue uptake, metabolism and biological activities should be performed before establishing recommendations for disease prevention. |
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Antioxidantes dietéticos: controvérsias e perspectivasantioxidant vitaminscarotenoidspoliphenolsThe generation of reactive oxygen and nitrogen species (ROS and RNS) during metabolism is capable of damaging cellular biomolecules. To be protected against oxidative injury, cells evolved complex cellular defense mechanisms and the capability to use exogenous antioxidants to eliminate ROS/RNS. The potential role of micronutrients as antioxidants (vitamin C, vitamin E, carotenoids and poliphenols) has stimulated intense research efforts. In various human supplementation studies, however, these compounds presented pro-oxidant effects at high doses for most risk groups. Therefore, more studies about the bioavailability, tissue uptake, metabolism and biological activities should be performed before establishing recommendations for disease prevention.Sociedade Brasileira de Química2007-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000200036Química Nova v.30 n.2 2007reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422007000200036info:eu-repo/semantics/openAccessCerqueira,Fernanda MenezesMedeiros,Marisa Helena Gennari deAugusto,Oharapor2007-03-13T00:00:00Zoai:scielo:S0100-40422007000200036Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2007-03-13T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Antioxidantes dietéticos: controvérsias e perspectivas |
title |
Antioxidantes dietéticos: controvérsias e perspectivas |
spellingShingle |
Antioxidantes dietéticos: controvérsias e perspectivas Cerqueira,Fernanda Menezes antioxidant vitamins carotenoids poliphenols |
title_short |
Antioxidantes dietéticos: controvérsias e perspectivas |
title_full |
Antioxidantes dietéticos: controvérsias e perspectivas |
title_fullStr |
Antioxidantes dietéticos: controvérsias e perspectivas |
title_full_unstemmed |
Antioxidantes dietéticos: controvérsias e perspectivas |
title_sort |
Antioxidantes dietéticos: controvérsias e perspectivas |
author |
Cerqueira,Fernanda Menezes |
author_facet |
Cerqueira,Fernanda Menezes Medeiros,Marisa Helena Gennari de Augusto,Ohara |
author_role |
author |
author2 |
Medeiros,Marisa Helena Gennari de Augusto,Ohara |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Cerqueira,Fernanda Menezes Medeiros,Marisa Helena Gennari de Augusto,Ohara |
dc.subject.por.fl_str_mv |
antioxidant vitamins carotenoids poliphenols |
topic |
antioxidant vitamins carotenoids poliphenols |
description |
The generation of reactive oxygen and nitrogen species (ROS and RNS) during metabolism is capable of damaging cellular biomolecules. To be protected against oxidative injury, cells evolved complex cellular defense mechanisms and the capability to use exogenous antioxidants to eliminate ROS/RNS. The potential role of micronutrients as antioxidants (vitamin C, vitamin E, carotenoids and poliphenols) has stimulated intense research efforts. In various human supplementation studies, however, these compounds presented pro-oxidant effects at high doses for most risk groups. Therefore, more studies about the bioavailability, tissue uptake, metabolism and biological activities should be performed before establishing recommendations for disease prevention. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000200036 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000200036 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
10.1590/S0100-40422007000200036 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Química Nova v.30 n.2 2007 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
_version_ |
1750318106113212416 |