Title:In Vitro Effects of Arylhydrocoumarin on Free Radicals and Oxidative Stress in Erythrocytes and Saccharomyces cerevisiae
Volume: 15
Issue: 11
Author(s): Rizangela L.M. de Freitas, George L. da Silva Oliveira, Rivelilson M. de Freitas, André L.B.S. Barreiros, Juceni P. David, Clayton Q. Alves, Charleston R. Pinto and Jorge M. David
Affiliation:
Keywords:
Antioxidant capacity, neoflavonoids, oxidative stress, S. cerevisiae, 7-acetoxy-4-aryl-3, 4-dihydrocoumarin.
Abstract: Neoflavonoids comprise a group of natural compounds with varied chemical structures and promising pharmacological
properties, including antioxidant capacity. This work describes an evaluation of the in vitro antioxidant capacity
of a new coumarin derivative, i.e., 7-acetoxy-4-aryl-3,4-dihydrocoumarin, in terms of its ability to quench the 2,2-
diphenyl-1-picrylhydrazyl (DPPH•), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+), hydroxyl (OH•)
and superoxide anion (O2•-) radicals, as well as its capacity to initiate electron transfer by reducing potential and inhibit
lipid peroxidation by TBARS (thiobarbituric acid reactive substances) method. In addition, the antioxidant capacity of
7-acetoxy-4-aryl-3,4-dihydrocoumarin was evaluated against oxidative damage induced by hydrogen peroxide in erythrocyte
suspensions and S. cerevisiae strains. In all methodologies investigated, high antioxidant capacities above 65% were
demonstrated by 7-acetoxy-4-aryl-3,4-dihydrocoumarin against the DPPH•, ABTS•+, OH• and O2•- radicals. The ability of
7-acetoxy-4-aryl-3,4-dihydrocoumarin to inhibit oxidative damage induced by hydrogen peroxide in erythrocytes and
S. cerevisiae strains demonstrates the importance of this compound in the protection against oxidative stress at the cellular
level. Thus, the results obtained in this study suggest that 7-acetoxy-4-aryl-3,4-dihydrocoumarin can assist the development
of new antioxidant products for possible use in the prevention or reduction of diseases related to oxidative stress.