Abstract
Antimicrobial drugs are of great importance in the control of bacterial infections. Its indiscriminate use contributes to the consolidation of bacterial resistance. Its applicability is due to its secondary metabolites, such as saponins, which are compounds with relevant antibacterial action. Hecogenin acetate is a saponin present in plants of the agave genus with analgesic, antioxidant, antinociceptive, cardioactive, anticancer, antifungal and antimicrobial activity. The present work aimed to identify the antibacterial activity of hecogenin acetate against strains of E. coli, P. aeruginosa and S. aureus and to investigate the NorA and MepA efflux pump inhibitory activity of S. aureus strains. The Minimum Inhibitory Concentration was evaluated by broth microdilution. The Antibiotic Activity Modifier effect and the assessment of efflux pump inhibition were evaluated by microdilution with sub-inhibitory concentrations. Hecogenin acetate showed minimal inhibitory concentration without significant relevance. In the evaluation of the potentiating activity of the antibiotic action, a greater antagonistic behavior is noticed. In the analyzes performed with the efflux pump, it was noticed that the hecogenin acetate does not interfere in the efflux pump mechanism of the analyzed bacteria.
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