Antimycobacterial Assessment of Salicylanilide Benzoates including Multidrug-Resistant Tuberculosis Strains
作者:Martin Krátký、Jarmila Vinšová、Jiřina Stolaříková
DOI:10.3390/molecules171112812
日期:——
The increasing emergence especially of drug-resistant tuberculosis has led to a strong demand for new anti-tuberculosis drugs. Eighteen salicylanilide benzoates were evaluated for their inhibition potential against Mycobacterium tuberculosis, Mycobacterium avium and two strains of Mycobacterium kansasii; minimum inhibitory concentration values ranged from 0.5 to 16 μmol/L. The most active esters underwent additional biological assays. Four benzoates inhibited effectively the growth of five multidrug-resistant strains and one extensively drug-resistant strain of M. tuberculosis at low concentrations (0.25–2 μmol/L) regardless of the resistance patterns. The highest rate of multidrug-resistant mycobacteria inhibition expressed 4-chloro-2-[4-(trifluoromethyl)-phenylcarbamoyl]phenyl benzoate (0.25–1 μmol/L). Unfortunately, the most potent esters were still considerably cytotoxic, although mostly less than their parent salicylanilides.
特别是耐药性结核病的不断出现,导致对新型抗结核药物的强烈需求。评估了18种水杨酰替苯胺苯甲酸酯对结核分枝杆菌(Mycobacterium tuberculosis)、鸟分枝杆菌(Mycobacterium avium)和两种堪萨斯分枝杆菌(Mycobacterium kansasii)的抑制潜力;最小抑制浓度值范围为0.5至16 μmol/L。最具活性的酯进行了额外的生物学检测。四种苯甲酸酯在低浓度(0.25–2 μmol/L)下有效抑制了五种多药耐药株和一种广泛耐药株的结核分枝杆菌生长,无论其耐药模式如何。四氯-2-[4-(三氟甲基)苯甲酰氨基]苯基苯甲酸酯表现出最高的多药耐药性分枝杆菌抑制率(0.25–1 μmol/L)。遗憾的是,最强的酯仍具有相当大的细胞毒性,尽管大部分仍低于其母体水杨酰替苯胺。