Chemical decay of an antibiotic inverts selection for resistance.

Chemical decay of an antibiotic inverts selection for resistance.
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DOI:
10.1038/nchembio.289
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发表时间:
2010-02
影响因子:
14.8
通讯作者:
Kishony R
Kishony R
中科院分区:
生物学1区
文献类型:
--
作者:
Palmer AC;Angelino E;Kishony R

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抗生素通常是不稳定的,会腐烂成各种具有潜在生物活性的化合物。我们发现,随着四环素的降解,抗药性赋予细菌的竞争优势不仅会减少,而且会由于更稳定的降解产物的活性而逆转为长期的劣势。四环素的腐烂可以导致对耐药性的净选择,这可能有助于解释自然环境中令人困惑的敏感和耐药菌株共存的原因。
Antibiotics are often unstable, decaying into various compounds with potential biological activities. We found that as tetracycline degrades, the competitive advantage conferred to bacteria by resistance not only diminishes, but reverses to become a prolonged disadvantage due to the activities of more stable degradation products. Tetracycline decay can lead to net selection against resistance, which may help explain the puzzling coexistence of sensitive and resistant strains in natural environments.
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