科學(xué)美國(guó)人60秒中英文翻譯：沙門(mén)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.
沙門(mén)氏菌.jpg
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(guó)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(mén)氏菌。
這種細(xì)菌就是以感染各種令人喜愛(ài)的燒烤類(lèi)熱食物而臭名遠(yuǎn)揚(yáng)。
但是這種細(xì)菌的食量同我們?nèi)祟?lèi)相比要有限得多。
一旦沙門(mén)氏菌進(jìn)入你的身體，它會(huì)依靠一種不同尋常的營(yíng)養(yǎng)物生存。
這是根據(jù)在《公共科學(xué)圖書(shū)館病原體》期刊上的一項(xiàng)研究得出的結(jié)論。
大多數(shù)吃了被沙門(mén)氏菌感染食物的人會(huì)選擇挺過(guò)去。
那是因?yàn)槿绻每纯股貋?lái)治療會(huì)消除感染，也會(huì)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(mén)氏菌，研究人員篩查了沙門(mén)氏菌感染活躍期對(duì)其生存至關(guān)重要的基因。
他們所鑒定出的一個(gè)包含5個(gè)基因的基因組共同努力促使沙門(mén)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(méi)有其他生物體以這種化學(xué)物質(zhì)為食，所以讓沙門(mén)氏菌挨餓既能對(duì)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(wú)恙。
接下來(lái)，研究人員計(jì)劃尋找一下什么食物里含有大量的沙門(mén)氏菌首選的零食。
但是請(qǐng)不要寄來(lái)艾格尼絲阿姨雞蛋沙拉這樣不明所以的樣本。