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Effect of efflux pump inhibitors on the susceptibility of Mycobacterium avium complex to clarithromycin

机译:渗透泵抑制剂对钙霉素分枝杆菌纤维菌易感性的影响

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摘要

In this study we aimed to evaluate the effect of the combination of clarithromycin and four inhibitors of efflux pumps (EPIs), including berberine (BER), carbonyl cyanide m-chlorophenylhydrazone (CCCP), piperine (PIP) and tetrandrine (TET), against 12 Mycobacterium avium complex clinical isolates. The minimum inhibitory concentration (MIC) of clarithromycin showed at least a fourfold reduction in presence of BER (83% of total isolates), CCCP (67%), PIP (25%) and TET (75%). Our results showed that the EPIs tested are active against both clarithromycin susceptible and resistant isolates. In particular, among the six resistant isolates, TET reversed the resistance phenotype of three strains, BER of two strains, and CCCP and PIP of one strain. Overall, our findings show the importance of these compounds in increasing the efficacy of clarithromycin in MAC clinical isolates.
机译:在这项研究中,我们旨在评估克拉霉素和四氧化术泵(EPIS)的四种抑制剂的影响,包括小檗碱(BER),羰基氰化物M-氯苯基腙(CCCP),哌啶(PIP)和Tetrandrine(Tetrandrine(Tet),反对 12分枝杆菌亚阅术复合体临床分离株。 Clarithromycin的最小抑制浓度(MIC)显示出BER的(总分离物的83%),CCCP(67%),PIP(25%)和TET(75%)中的至少四倍降低。 我们的研究结果表明,测试的EPIS对克拉霉素敏感和抗性分离物有效。 特别地,在六种抗性分离物中,TET逆转了三种菌株,两个菌株的抗性表型,以及一种菌株的CCCP和PIP。 总体而言,我们的研究结果表明这些化合物在增加克拉霉素在MAC临床分离株中的功效方面的重要性。

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