Effect of methylglyoxal on multidrug-resistant Pseudomonas aeruginosa.

Effect of methylglyoxal on multidrug-resistant Pseudomonas aeruginosa.
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DOI:
10.3389/fmicb.2014.00180
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发表时间:
2014
影响因子:
5.2
通讯作者:
Nishino K
Nishino K
中科院分区:
生物学2区
文献类型:
--
作者:
Hayashi K;Fukushima A;Hayashi-Nishino M;Nishino K

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蜂蜜具有复杂的化学性质,其广谱抗菌活性随花卉来源,气候和收获条件而变化。甲基乙二醛被确定为麦卢卡蜂蜜的主要抗菌成分。虽然已知丙酮醛对革兰氏阳性菌具有抗菌活性,包括耐甲氧西林金黄色葡萄球菌和耐万古霉素肠球菌,但描述其对革兰氏阴性菌活性的信息不多。在这项研究中,我们报告了甲基乙二醛对多重耐药铜绿假单胞菌(MDRP)使用53临床分离菌株的影响。我们还评估了删除铜绿假单胞菌中的五种多药外排系统以及大肠杆菌和鼠伤寒沙门氏菌中的外排系统对甲基乙二醛MIC的影响。我们的结果表明,甲基乙二醛在128-512 μg/ml(1.7-7.1 mM)的浓度下抑制MDRP的生长,并且不被药物外排系统识别。
Honey has a complex chemistry, and its broad-spectrum antimicrobial activity varies with floral source, climate, and harvesting conditions. Methylglyoxal was identified as the dominant antibacterial component of manuka honey. Although it has been known that methylglyoxal has antibacterial activity against gram-positive bacteria, including methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus, there is not much information describing its activity against gram-negative bacteria. In this study, we report the effect of methylglyoxal against multidrug-resistant Pseudomonas aeruginosa (MDRP) using 53 clinically isolated strains. We also assessed the effect of deleting the five multidrug efflux systems in P. aeruginosa, as well as the efflux systems in Escherichia coli and Salmonella enterica serovar Typhimurium, on MICs of methylglyoxal. Our results indicate that methylglyoxal inhibits the growth of MDRP at concentrations of 128–512 μg/ml (1.7–7.1 mM) and is not recognized by drug efflux systems.
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