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Abstract Title:

Flavonoids as protective agents against oxidative stress induced by gentamicin in systemic circulation. Potent protective activity and microbial synergism of luteolin.

Abstract Source:

Food Chem Toxicol. 2018 Aug ;118:294-302. Epub 2018 May 26. PMID: 29758313

Abstract Author(s):

Pamela Soledad Bustos, Romina Deza-Ponzio, Paulina Laura Páez, José Luis Cabrera, Miriam Beatriz Virgolini, María Gabriela Ortega

Article Affiliation:

Pamela Soledad Bustos

Abstract:

The flavonoids effect on gentamicin (GEN)-induced oxidative stress (OS) in systemic circulation was evaluated in terms of reactive oxygen species (ROS) production, enzymatic antioxidant defenses superoxide dismutase (SOD) and catalase (CAT), and lipid peroxidation (LP) in vitro on human leukocytes and in vivo on rat whole blood. The inhibitory activity of ROS was ATS < QTS < isovitexin < vitexin < luteolin. Luteolin, the most active, showed more inhibition in ROS production than vitamin C (reference inhibitor) in mononuclear cells and a slightly lower protective behavior compared to this inhibitor in polymorphonuclear cells. In both cellular systems, luteolin tends to level SOD and CAT activities modified by GEN, reaching basal values and preventing LP. In Wistar rats, GEN plus luteolin can suppress ROS generation, collaborate with SOD and CAT and diminish LP produced by GEN at therapeutic doses. Finally, luteolin and antibiotic association was evaluated on the antimicrobial activityin S. aureus and E. coli showing a synergism between GEN and luteolin on S. aureus ATCC and an additive effect on E. coli ATCC. Therefore, simultaneous administration of luteolin and GEN could represent a potential therapeutic option capable of protecting the host against OS induced by GEN in the systemic circulation while enhancing the antibacterial activity of GEN.

Study Type : Animal Study

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