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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.
As long as there have been mice, people have sought a better mousetrap. And since we figured out that bacteria can make us sick, we’ve searched for better antibiotics2. Now scientists in Canada and Japan have come up with a new way to disarm3 the bugs4 that cause food poisoning.
Most antibiotics directly attack the microbes that make us ill. Penicillin5, for example, weakens bugs’ tough outer wall to the point that many of them simply explode. While such treatment kills the bacteria, it doesn’t necessarily eliminate the threat. Because a lot of bugs produce toxins7, and it’s the toxins that knock us for a loop. Blowing up the bugs can just make things worse.
What these researchers have designed is a drug that helps the body mop up bacterial8 toxins. In their study, a single injection of the drug protected mice from the potentially lethal9 effects of shiga toxin6, the sick-making molecule10 produced by the kinds of E. coli that cause food poisoning. Their results appear in the October 28th issue of the Proceedings11 of the National Academy of Sciences. With antibiotic1 resistance on the rise, having more weapons in our antibacterial arsenal12 is not a bad idea. Because anyone who’s eaten the sun-baked potato salad can tell you food poisoning is no picnic.
Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
1 antibiotic | |
adj.抗菌的;n.抗生素 | |
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2 antibiotics | |
n.(用作复数)抗生素;(用作单数)抗生物质的研究;抗生素,抗菌素( antibiotic的名词复数 ) | |
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3 disarm | |
v.解除武装,回复平常的编制,缓和 | |
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4 bugs | |
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误 | |
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5 penicillin | |
n.青霉素,盘尼西林 | |
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6 toxin | |
n.毒素,毒质 | |
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7 toxins | |
n.毒素( toxin的名词复数 ) | |
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8 bacterial | |
a.细菌的 | |
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9 lethal | |
adj.致死的;毁灭性的 | |
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10 molecule | |
n.分子,克分子 | |
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11 proceedings | |
n.进程,过程,议程;诉讼(程序);公报 | |
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12 arsenal | |
n.兵工厂,军械库 | |
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