In Vitro Effects of Arylhydrocoumarin on Free Radicals and Oxidative Stress in Erythrocytes and Saccharomyces cerevisiae

作者：de Freitas Rizangela L M; da Silva Oliveira George L; de Freitas Rivelilson M; Barreiros Andre L B S; David Juceni P; Alves Clayton Q; Pinto Charleston R; David Jorge M^*

来源：Current Pharmaceutical Biotechnology, 2014, 15(11): 1069-1082.

DOI：10.2174/1389201015666141110141714

• Antioxidant capacity
• neoflavonoids
• oxidative stress
• S. cerevisiae
• 7-acetoxy-4-aryl-3,4-dihydrocoumarin

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 center dot), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS center dot+), hydroxyl (OH center dot) and superoxide anion (O-2(center dot-)) 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 center dot, ABTS(center dot+), OH center dot and O-2(center dot-) 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.

• 出版日期2014