美国科学60秒 SSS 2012-11-02

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Nasty bacteria cling to the surfaces of countertops. They also stick to medical devices - like catheters - that are placed inside the human body, where they can become a dangerous source of infection.

 

Individually, bacteria are fairly easily killed. But if they multiply on a surface, they eventually form a biofilm - a tightly organized bacterial¹ community that can fight off antibiotics³ and the body’s immune system.

 

Now, researchers have come up with a way to give those nasty bugs⁴ the “slip(贴条子；禁停)” - a non-stick surface that stops the biofilm from forming. The material hasn’t been tested in humans yet. But in the lab, catheters coated with the non-stick surface stayed almost completely free of staphylococcus aureus bacteria(金黄色葡萄球菌). The findings were presented at the October, 2012, AVS International symposium⁵ in Tampa, which covers materials, interfaces⁶ and processing. 

 

By denying bacteria a grip(附着) on medical devices without resorting to antibiotics, the researchers also hope to help doctors get a grip(掌控) on antibiotic² resistance - one of medicine’s stickiest problems.

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