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Título:
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Free hydroxytyrosol detected in red blood cells after an acute oral administration of olive extract: A proposed deconjugation process.
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Autor/a:
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Rubió Piqué, Laura; Serra Maqueda, Aida; Macià i Puig, Ma Alba; Piñol Felis, Carme; Romero Fabregat, Mª Paz; Motilva Casado, Mª José
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Notas:
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Olive oil phenolic compounds are extensively metabolized into methylated and glucurono and sulpho-conjugates of hydroxytyrosol (HT), the detected circulating forms in plasma. However, these conjugates are considered to be pharmacologically inactive and their in situ deconjugation in certain sites appears to be an absolute requirement to exert their beneficial effects. In the present study, red blood cells (RBCs) were analysed in rats after an oral administration of an olive phenolic extract and their in vivo deconjugation capacity of hydroxytyrosol phase II metabolites was assessed.A decreasing trend of the conjugated forms of HT and a parallel free HT increasing in concentration up to6hwas observed in RBCs,indicating that HT conjugates might be hydrolysed intracellularly in RBCs. Our results suggestthat RBCs could play a pivotal role in the distribution and bioavailability of circulating phenols and their metabolites and also in protection against oxidative damage to cells |
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Materia(s):
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-hydroxytyrosol
-red blood cells
-phenol metabolites deconjugation
-Fenols
-Oli d'oliva
-Hematies
-Polifenols
-Phenols
-Olive oil
-Erythrocytes
-Polyphenols |
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Derechos:
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(c) Elsevier, 2014
info:eu-repo/semantics/restrictedAccess |
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Tipo de documento:
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Artículo
Artículo - Versión publicada |
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Editor:
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Elsevier
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Compartir:
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