科學(xué)美國人60秒中英文翻譯：沙門氏菌
Summer's here and with it come picnics, barbecues and of course Salmonella.
The germ is notorious for contaminating a variety of favorite warm-weather foods.
But the bacteria's palate is more limited than ours.
Once Salmonella makes its way into your system, it relies on a single unusual nutrient to survive.
That's according to a study in the journal PLOS Pathogens.
Most people tough it out when they get food poisoning from Salmonella.
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That's because treatment with antibiotics would eliminate the infection, but also get rid of the gut bacteria that promote good health.
To figure out how to target Salmonella specifically, researchers screened for genes vital for the microbe's survival during the active phase of infection.
And they identified a cluster of five genes that work together to allow the bacteria to digest a molecule called fructose-asparagine.
No other organisms are known to use this chemical for fuel, so starving Salmonella of it could be a new strategy for fighting this foodborne bug while leaving desirable intestinal inhabitants unharmed.
Next, the researchers plan to see which foods contain large amounts of Salmonella's go-to snack.
But please, don't send unsolicited samples of Aunt Agnes's egg salad.
科學(xué)美國人60秒中文翻譯：
夏天到了，野餐和燒烤必不可少，當(dāng)然還有沙門氏菌。
這種細(xì)菌就是以感染各種令人喜愛的燒烤類熱食物而臭名遠(yuǎn)揚。
但是這種細(xì)菌的食量同我們?nèi)祟愊啾纫邢薜枚唷?BR> 一旦沙門氏菌進(jìn)入你的身體，它會依靠一種不同尋常的營養(yǎng)物生存。
這是根據(jù)在《公共科學(xué)圖書館病原體》期刊上的一項研究得出的結(jié)論。
大多數(shù)吃了被沙門氏菌感染食物的人會選擇挺過去。
那是因為如果用看抗生素來治療會消除感染，也會去除有益于身體健康的腸道細(xì)菌。
為了弄清楚如何才能只消滅沙門氏菌，研究人員篩查了沙門氏菌感染活躍期對其生存至關(guān)重要的基因。
他們所鑒定出的一個包含5個基因的基因組共同努力促使沙門氏菌得以消化一種叫做果糖-天冬酰胺的分子。
據(jù)我們所知，沒有其他生物體以這種化學(xué)物質(zhì)為食，所以讓沙門氏菌挨餓既能對抗這種食源性細(xì)菌，又可以保障身體腸道內(nèi)的有益菌安然無恙。
接下來，研究人員計劃尋找一下什么食物里含有大量的沙門氏菌首選的零食。
但是請不要寄來艾格尼絲阿姨雞蛋沙拉這樣不明所以的樣本。