手机APP下载

您现在的位置: 首页 > 在线广播 > 科学美国人 > 科学美国人健康系列 > 正文

科学美国人60秒:细菌可能会引发皮肤湿疹

来源:可可英语 编辑:aimee   可可英语APP下载 |  可可官方微信:ikekenet
 下载MP3到电脑  批量下载MP3和LRC到手机
加载中..
ssvcQ4dr9@SjI

W0W2R.gRiZ^7d,;9

This is Scientific American — 60-Second Science. I'm Christopher Intagliata.
Your skin—like many other parts of your body—is crawling with microscopic critters. "It's a microbial zoo in a sense." Heidi Kong, a dermatology researcher at the National Institutes of Health.
That microbial zoo—and the types of microbes in it—changes over time. Kong and her team observed those changes during a flare-up of eczema—a condition characterized by itchy, inflamed skin. On healthy skin, and on patients with mild eczema, the researchers found a diverse roster of bacterial residents—including a species of Staph bacteria called Staphylococcus epidermidis. But in patients suffering a severe bout of eczema, that diversity was disrupted. And strains of a different Staph species dominated: Staphylococcus aureus.

ks_]@D*wo)+b1RaNCA

湿疹.jpg
The research team then collected Staph aureus strains from the eczema sufferers and swabbed them on the skin of mice. And that once-healthy mouse skin grew thicker—as it does in eczema—and was invaded by immune-response cells. While not proof, the result suggests that certain strains of Staph bacteria could be culpable in worsening eczema flares. The study is in the journal Science Translational Medicine.
The genetic technique Kong and her team used—called shotgun metagenomics—gives a detailed snapshot of the microbiome. So it might be used to investigate other skin conditions too.
"For example, acne has been linked with Propionibacterium acne. There's interest in looking at other inflammatory skin diseases, such as rosacea or even psoriasis. So there is the potential to use shotgun metagenomics to study inflammatory skin diseases and even skin cancers, to better understand: what are the microbes that might be there, and what they may be doing."
And whether certain members of that microbial menagerie might be mistreating the zookeeper.
Thanks for listening for Scientific American — 60-Second Science Science. I'm Christopher Intagliata.

KOm0;nq97V0%+Bsvab

(-h,]&G|StY__NhK

3&LKk%gPR=O!;paV+~n&yAa0@mQS!N.Grn#7HU5Z.P

重点单词   查看全部解释    
inflamed [in'fleimd]

想一想再看

adj. 发炎的,红肿的 动词inflame的过去式和过

 
pine [pain]

想一想再看

n. 松树,松木
vi. 消瘦,憔悴,渴望

联想记忆
investigate [in'vestigeit]

想一想再看

v. 调查,研究
[计算机] 研究

联想记忆
technique [tek'ni:k]

想一想再看

n. 技术,技巧,技能

 
microscopic ['maikrə'skɔpik]

想一想再看

adj. 显微镜的,极小的,微观的

 
bacteria [bæk'tiəriə]

想一想再看

n. (复数)细菌

 
certain ['sə:tn]

想一想再看

adj. 确定的,必然的,特定的
pron.

 
diversity [dai'və:siti]

想一想再看

n. 差异,多样性,分集

联想记忆
culpable ['kʌlpəbl]

想一想再看

adj. 该责备的,有罪的

联想记忆
species ['spi:ʃiz]

想一想再看

n. (单复同)物种,种类

 

发布评论我来说2句

    最新文章

    可可英语官方微信(微信号:ikekenet)

    每天向大家推送短小精悍的英语学习资料.

    添加方式1.扫描上方可可官方微信二维码。
    添加方式2.搜索微信号ikekenet添加即可。