Açaí Euterpe oleracea Mart. Modulates Oxidative Stress Resistance in Caenorhabditis elegans by Direct and Indirect MechanismsReport as inadecuate




Açaí Euterpe oleracea Mart. Modulates Oxidative Stress Resistance in Caenorhabditis elegans by Direct and Indirect Mechanisms - Download this document for free, or read online. Document in PDF available to download.

Açaí Euterpe oleracea Mart. has recently emerged as a promising source of natural antioxidants. Despite its claimed pharmacological and nutraceutical value, studies regarding the effects of açaí in vivo are limited. In this study, we use the Caenorhabditis elegans model to evaluate the in vivo antioxidant properties of açaí on an organismal level and to examine its mechanism of action. Supplementation with açaí aqueous extract AAE increased both oxidative and osmotic stress resistance independently of any effect on reproduction and development. AAE suppressed bacterial growth, but this antimicrobial property did not influence stress resistance. AAE-increased stress resistance was correlated with reduced ROS production, the prevention of sulfhydryl SH level reduction and gcs-1 activation under oxidative stress conditions. Our mechanistic studies indicated that AAE promotes oxidative stress resistance by acting through DAF-16 and the osmotic stress response pathway OSR-1-UNC-43-SEK-1. Finally, AAE increased polyglutamine protein aggregation and decreased proteasome activity. Our findings suggest that natural compounds available in AAE can improve the antioxidant status of a whole organism under certain conditions by direct and indirect mechanisms.



Author: Larissa de Freitas Bonomo, David Nunes Silva, Patrícia Ferreira Boasquivis, Franciny Aparecida Paiva, Joyce Ferreira da Costa Gu

Source: http://plos.srce.hr/



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