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Multichannel pipette (8x) 30-300 μl

Company: Thermo Fisher Scientific
Catalog#: LH-729140
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Antimicrobial Sensitivity Assay for Bdellovibrio bacteriovorus
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Date:
2020-12-20
[Abstract]  

Bdellovibrio bacteriovorus, an obligate predatory bacterium [i.e., bacteria that kill and feed on other bacteria (prey)], has the potential to be used as a probiotic for the disinfection of surfaces or for the treatment of bacterial infections. One option is to use this organism in combination with antimicrobials to potentiate the effectiveness of treatments. In order to make this approach feasible more has to be known about the ability of B. bacteriovorus to resist antibiotics itself. Standard assays to determine the minimum inhibitory concentration (MIC) are not suitable for B. bacteriovorus, since the small size of this bacterium (0.25-0.35 by 0.5-2 μm) prevents scattering at OD600. Since these predatory bacteria require larger prey bacteria for growth (e.g., E. coli dimensions are

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[摘要]  [摘要]蛭弧菌弧菌,一种专性捕食细菌[即,细菌杀灭和进料的其它细菌(猎物)] ,有可能使被用作表面的消毒益生菌或细菌感染的治疗。一种选择是将这种生物体与抗菌素联合使用以增强治疗效果。为了使该方法可行,必须进一步了解细菌噬菌芽孢杆菌自身抵抗抗生素的能力。标准测定法来确定最小抑制浓度(MIC)是不适合B.弧菌,由于 的小尺寸该细菌(0.25-0.35由0.5-2的微米)防止在OD散射600 。由于这些细菌掠夺需要用于生长较大的捕食的细菌(例如,大肠杆菌(E.coli)尺寸为1由1-2微米),第这里描述的用于抗微生物敏感性测定方法E基础是OD的降低600期间引起的猎物裂解增长。以前关于掠食性细菌对抗菌素耐药性的研究采用的方法无法直接将抗菌素耐药性水平与其他细菌种类进行比较。在这里,我们描述了一种确定细菌对芽孢杆菌的抗药性的方法,该方法可与被测试的参照生物体尽可能接近相同的实验条件进行比较。简要地说,最低抑菌浓度(MIC)值的B.弧菌通过在存在和不存在不同浓度的抗微生物剂的混合捕食者/猎物培养物的600nm处测量的吸光度的减少来确定。值得注意的是,可以使用不同的条件,猎物细菌和/或抗菌剂来修改此方法以获得其他掠食性细菌的抗菌素MIC值。

[背景]噬菌蛭弧菌是一种革兰氏阴性细菌掠夺是“早”在其他革兰氏阴性细菌的物种,生长在他们的牺牲,并最终杀死它们。细菌噬菌芽孢杆菌以及其他掠食性细菌有潜力用作益生菌以消毒表面或治疗细菌感染(Tyson和Elizabeth ...

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