Pulse Dosing of Antibiotic Enhances Killing of a Staphylococcus aureus Biofilm.
Pulse Dosing of Antibiotic Enhances Killing of a Staphylococcus aureus Biofilm.
复制标题
抗生素的脉冲剂量增强了金黄色葡萄球菌生物膜的杀死。
DOI:
10.3389/fmicb.2020.596227
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发表时间:
2020
影响因子:
5.2
通讯作者:
Lewis K
中科院分区:
文献类型:
--
作者:
Meyer KJ;Taylor HB;Seidel J;Gates MF;Lewis K
Biofilms are highly tolerant to antibiotics and underlie the recalcitrance of many chronic infections. We demonstrate that mature Staphylococcus aureus biofilms can be substantially sensitized to the treatment by pulse dosing of an antibiotic – in this case, oxacillin. Pulse (periodic) dosing was compared to continuous application of antibiotic and was studied in a novel in vitro flow system which allowed for robust biofilm growth and tractable pharmacokinetics of dosing regimens. Our results highlight that a subpopulation of the biofilm survives antibiotic without becoming resistant, a population we refer to as persister bacteria. When oxacillin was continuously present the persister level did not decline, but, importantly, providing correctly timed periodic breaks decreased the surviving population. We found that the length of the periodic break impacted efficacy, and there was an optimal length that sensitized the biofilm to repeat treatment without allowing resistance expansion. Periodic dosing provides a potential simple solution to a complicated problem.
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影响因子:
9.2
作者:
Carvalho G;Balestrino D;Forestier C;Mathias JD
通讯作者:
Mathias JD
DOI:
10.1126/science.aad3292
发表时间:
2016-01-01
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Baym M;Stone LK;Kishony R
通讯作者:
Kishony R
影响因子:
2.1
作者:
Cogan, N. G.;Rath, H.;Stiesch, M.
通讯作者:
Stiesch, M.
影响因子:
4.9
作者:
Haagensen, Janus A. J.;Verotta, Davide;Yang, Katherine
通讯作者:
Yang, Katherine
影响因子:
3.1
作者:
Kadurugamuwa, JL;Sin, L;Contag, PR
通讯作者:
Contag, PR