The treatment of infections is threatened by multidrug resistance necessitating the search for alternative treatments, such as from medicinal plants. There are several reports on the antibacterial activity of . This study assessed the activity against multidrug-resistant (MDR) and also the toxicity of the leaves of this plant. The hexane and methanol extracts of the leaves were screened against characterized MDR isolates by disc diffusion and microdilution methods. A cytotoxicity test was performed on monkey kidney epithelial cells; an acute toxicity test was conducted in BALB/ mice and the liver and kidney functions were assessed at the end of the test. Both extracts recorded weak activity in the disc test. Conversely, the extracts showed a wide range of activity against specific isolates in the microdilution assay, and the lowest minimum inhibitory concentration value recorded was 0.0625 mg/mL. The hexane extract (ANO) was not cytotoxic (CC = 57.7 g/mL) and was also not toxic to the mice at 2000 mg/Kg bodyweight, while the methanol extract (ANO) was cytotoxic (CC = 18.44 g/mL), and mortality was recorded at 2000 mg/Kg but not at 300 mg/Kg. There were no significant changes in biomarkers of the liver (alanine aminotransferase and aspartate aminotransferase) and kidney (creatinine and urea) functions ( > 0.05), except for ANO which significantly decreased creatinine ( = 0.01), in the test mice which was not considered a toxic effect. In conclusion, this study has demonstrated high bacteriostatic activity against MDR and a low risk of toxicity of leaves. Hence, the leaves are a potential alternative treatment for resistant infection. The natural products should be further investigated in vitro and in vivo.
References
Clin Infect Dis. 2019 Mar 7;68(Suppl 2):S165-S170
[PMID: 30845331]
J Contemp Dent Pract. 2016 Aug 01;17(8):650-3
[PMID: 27659082]
