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SSS 2012-03-05

时间:2012-04-16 05:44来源:互联网 提供网友:gmeng   字体: [ ]
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    (单词翻译:双击或拖选)

 This is Scientific American 60 science, I am Charles Q. Choi!

 
Psoriasis is an autoimmune disease—the immune system mistakenly attacks its own body, causing red, itchy, scaly1 patches on the skin. But there may be a hidden upside. People with psoriasis are more likely to have gene2 variants3 that protect them against the effects of HIV-1.
 
Researchers had noticed that some psoriasis patients had the same gene variants as people known as "HIV-1 controllers." Such people have HIV-1, but they naturally maintain low levels of the virus and generally do not develop any obvious symptoms of AIDS.
 
To investigate further, scientists looked at more than 1,700 psoriasis patients and nearly 3,600 people who don’t have it. People who have psoriasis were significantly more likely to have the gene variants known to defend against HIV-1 and delay its progression to AIDS. The study is in the journal Public Library of Science Genetics.
 
These findings suggest that psoriasis is a malfunction4 of antiviral gene variants that ordinarily protect us against disease. Further research could help us understand why autoimmune diseases develop, and give researchers new tools for treating HIV.
 
Thanks for the minute, for  I am Charles Q. Choi. 

点击收听单词发音收听单词发音  

1 scaly yjRzJg     
adj.鱼鳞状的;干燥粗糙的
参考例句:
  • Reptiles possess a scaly,dry skin.爬行类具有覆盖着鳞片的干燥皮肤。
  • The iron pipe is scaly with rust.铁管子因为生锈一片片剥落了。
2 gene WgKxx     
n.遗传因子,基因
参考例句:
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
3 variants 796e0e5ff8114b13b2e23cde9d3c6904     
n.变体( variant的名词复数 );变种;变型;(词等的)变体
参考例句:
  • Those variants will be preserved in the'struggle for existence". 这些变异将在“生存竞争”中被保留下来。 来自辞典例句
  • Like organisms, viruses have variants, generally called strains. 与其他生物一样,病毒也有变种,一般称之为株系。 来自辞典例句
4 malfunction 1ASxT     
vi.发生功能故障,发生故障,显示机能失常
参考例句:
  • There must have been a computer malfunction.一定是出了电脑故障。
  • Results have been delayed owing to a malfunction in the computer.由于电脑发生故障,计算结果推迟了。
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