AVALIAÇÃO DA ATIVIDADE ANTIBACTERIANA E MODIFICADORA DA AÇÃO ANTIBIÓTICA DO MENTOL FRENTE A CEPAS BACTERIANAS
AVALIAÇÃO DA ATIVIDADE ANTIBACTERIANA E MODIFICADORA DA AÇÃO ANTIBIÓTICA DO MENTOL FRENTE A CEPAS BACTERIANAS
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DOI: 10.22533/at.ed.14923041214
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Palavras-chave: Monoterpeno, Mentol, Modulação
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Keywords: Monoterpene, Menthol, Modulation
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Abstract: The indiscriminate use of antibiotics has led to an increase in the development of bacterial resistance. In this context, the search for active compounds for these activities has grown, and menthol, a monoterpene found in various essential oils, has been highlighted for these purposes. The objective of this study was to evaluate the direct antibacterial activity and its association with antibiotics of this monoterpene against clinically relevant bacterial strains.The antibacterial effect of menthol and the modifying activity of antibiotic action were assessed through broth microdilution, determining the Minimum Inhibitory Concentration (MIC). Menthol did not exhibit clinically relevant direct activity. However, in the combination process of menthol with antibiotics, potential synergistic and antagonistic effects were observed, with significant values for these observations.For Staphylococcus aureus, oxacillin showed a possible synergy, with a reduction in its concentration from 20.15 µg/mL to 0.5 µg/mL when associated with menthol. With norfloxacin, the control was 256 µg/mL, and its association with menthol reduced it to 128 µg/mL, again demonstrating a reduction in MIC. For gentamicin, with a control of 12.7 µg/mL, its association with menthol reduced it to 10 µg/mL. Concerning Pseudomonas aeruginosa, oxacillin was found to be indifferent. Gentamicin exhibited a possible synergy, with the antibiotic control at 16 µg/mL and the combination with menthol at 8 µg/mL. However, there was antagonism observed with norfloxacin. In conclusion, menthol alone did not show direct antibacterial activity. However, when combined with antibiotics, potential synergistic effects were observed, enhancing its ability to interact with them. This was particularly evident with aminoglycoside antibiotics like gentamicin and the fluoroquinolone norfloxacin.
- Raimundo Luiz Silva Pereira
- Isaac Moura Araújo
- Debora de Menezes Dantas
- Sheila Alves Gonçalves
- Kamilla Bezerra Cabral
- Gustavo Miguel Siqueira
- Gabriel Gonçalves Alencar
- Antonio Júdson Targino Machado
- Marília Cavalcante Araújo
- Francisco Sydney Henrique Félix
- Romário Pinheiro Lustosa
- Luís Pereira-de-Morais