PTEN Mediates the Antioxidant Effect of Resveratrol at Nutritionally Relevant Concentrations
Joint Authors
Abdelaziz, Kheira M.
Bonet-Costa, Vicent
Inglés, Marta
Viña, Jose
Miguel, M. Graça
Gambini, Juan
El Alami, Marya
Borrás, Consuelo
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-09
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Introduction.
Antioxidant properties of resveratrol have been intensively studied for the last years, both in vivo and in vitro.
Its bioavailability after an oral dose is very low and therefore it is very important to make sure that plasma concentrations of free resveratrol are sufficient enough to be active as antioxidant.
Aims.
In the present study, using nutritionally relevant concentrations of resveratrol, we aim to confirm its antioxidant capacity on reducing peroxide levels and look for the molecular pathway involved in this antioxidant effect.
Methods.
We used mammary gland tumor cells (MCF-7), which were pretreated with different concentrations of resveratrol for 48 h, and/or a PTEN inhibitor (bpV: bipy).
Hydrogen peroxide levels were determined by fluorimetry, PTEN levels and Akt phosphorylation by Western Blotting, and mRNA expression of antioxidant genes by real-time reverse transcriptase-polymerase chain reaction (RT-PCR).
Results.
Resveratrol treatment for 48 h lowered peroxide levels in MCF-7, even at low nutritional concentrations (1 nM).
This effect was mediated by the activation of PTEN/Akt pathway, which resulted in an upregulation of catalase and MnSOD mRNA levels.
Conclusion.
Resveratrol acts as an antioxidant at nutritionally relevant concentrations by inducing the expression of antioxidant enzymes, through a mechanism involving PTEN/Akt signaling pathway.
American Psychological Association (APA)
Inglés, Marta& Gambini, Juan& Miguel, M. Graça& Bonet-Costa, Vicent& Abdelaziz, Kheira M.& El Alami, Marya…[et al.]. 2014. PTEN Mediates the Antioxidant Effect of Resveratrol at Nutritionally Relevant Concentrations. BioMed Research International،Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-482449
Modern Language Association (MLA)
Inglés, Marta…[et al.]. PTEN Mediates the Antioxidant Effect of Resveratrol at Nutritionally Relevant Concentrations. BioMed Research International No. 2014 (2014), pp.1-6.
https://search.emarefa.net/detail/BIM-482449
American Medical Association (AMA)
Inglés, Marta& Gambini, Juan& Miguel, M. Graça& Bonet-Costa, Vicent& Abdelaziz, Kheira M.& El Alami, Marya…[et al.]. PTEN Mediates the Antioxidant Effect of Resveratrol at Nutritionally Relevant Concentrations. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-482449
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-482449