English 中文網 漫畫網 愛新聞iNews 翻譯論壇
    中國網站品牌欄目(頻道)
    當前位置: Language Tips > Special Speed News VOA慢速

    Designing an alternative to antibiotics

    [ 2012-08-09 14:46] 來源:中國日報網     字號 [] [] []  
    免費訂閱30天China Daily雙語新聞手機報:移動用戶編輯短信CD至106580009009

    Get Flash Player

    Download

    This is the VOA Special English Health Report.

    In 1928 a British scientist made a "chance observation." He noticed that somemold had grown in bacteria in a culture plate in his laboratory. Molds can do that. But this mold that had somehow gotten into the plate had the ability to kill the bacteria around it.

    Designing an alternative to antibiotics

    The scientist, Alexander Fleming, found that the mold was a member of a common group known as Penicillium. Fleming and two other scientists -- Ernst Boris Chain and Howard Walter Florey -- went on to win the Nobel Prize in 1945. They were honored "for the discovery of penicillin and itscurative effect in various infectious diseases."

    Other powerful antibiotics have been discovered since penicillin. But many antibiotics have become less and less effective as the germs they are designed to kill develop resistance.

    So scientists are searching for new ways to treat infections. Now, researchers in Australia say they have made an important discovery. Scientists at Monash University in Melbourne believe an antibacterial viral protein called PlyC could be used as an alternative to antibiotics.

    This protein was first identified as a possible treatment for infections in 1925. But the research ended following the discovery of antibiotics.

    Now, scientists have spent six years studying the structure of the protein. They have found how it kills the bacteria that cause sore throats, pneumonia and streptococcal toxic shock syndrome.

    Australian researchers worked with scientists at the Rockefeller University in New York and the University of Maryland. Their findings appear in the Proceedings of the National Academy of Sciences.

    Dr. Sheena McGowan from Monash University describes the protein as a powerful bacterial killing machine. She says it looks like a flyingsaucer carrying a pair ofwarheads. It connects to the surface of the bacterium and then cuts through the outside to destroy it.

    Sheena McGowan says it could be highly valuable when conditions like pneumonia do not respond to traditional treatments.

    SHEENA MCGOWAN: "There's antibiotics at the moment for those particular types of diseases. We sort of see that there's a bit of resistance being built up in the bacterial community almost, and some of our antibiotics aren't quite as effective as they used to be. So this kind of ground route, basic research needs to be done quite early so that we have some time to develop them as safe human therapeutic over the timeframe when the antibiotics can keep working."

    The researchers have been studying PlyC's atomic structure to try to develop a drug. They say they have had success in treating streptococcal infections in mice. But an effective human treatment in the form of a pill or nasal spray may be at least ten years away.

    And that's the VOA Special English Health Report. I'm Steve Ember.

    mold: 霉;霉菌

    culture plate: 培養皿

    Penicillium: 青霉菌屬

    curative: 助于治療的;有療效的

    viral protein: 病毒蛋白

    pneumonia: 肺炎

    streptococcal toxic shock syndrome: 鏈球菌中毒性休克

    saucer: 碟形物

    warhead: 彈頭

    bacterium: 細菌

    timeframe: 時間段

    Related stories:

    When animals make people sick

    The Global problem of preterm births

    Crackdown on antibiotic abuse

    Why getting dirty can be healthy for children

    (來源:VOA 編輯:實習生朱眉霖)

     
    中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
     

    關注和訂閱

    人氣排行

    翻譯服務

    中國日報網翻譯工作室

    我們提供:媒體、文化、財經法律等專業領域的中英互譯服務
    電話:010-84883468
    郵件:translate@chinadaily.com.cn
     
     
    av无码人妻一区二区三区牛牛| 丰满熟妇人妻Av无码区| 4hu亚洲人成人无码网www电影首页| 人妻丝袜中文无码av影音先锋专区 | 中文在线中文A| 精品久久久久久久无码| 久久午夜夜伦鲁鲁片免费无码影视| 亚洲.欧美.中文字幕在线观看| 亚洲国产a∨无码中文777| 国产中文字幕在线免费观看| 亚洲精品无码久久久| 精品人无码一区二区三区| 亚洲色偷拍另类无码专区| 最好看最新高清中文视频| 中文字幕无码一区二区三区本日| 日日麻批免费40分钟无码| 亚洲欧洲日产国码无码网站 | 无码人妻丰满熟妇啪啪| 人妻无码一区二区三区AV| 国产成人无码区免费内射一片色欲| 天堂√中文最新版在线下载| 下载天堂国产AV成人无码精品网站| 国产亚洲精品无码成人| 少妇无码一区二区三区| 无码人妻品一区二区三区精99| 国产成人无码区免费内射一片色欲 | 熟妇人妻中文a∨无码| 久久精品亚洲乱码伦伦中文| 亚洲av中文无码乱人伦在线咪咕| 午夜无码一区二区三区在线观看| 免费无码又爽又黄又刺激网站| 久久久久久无码国产精品中文字幕 | 少妇无码AV无码专区线| 无码人妻AV免费一区二区三区 | 亚洲av中文无码乱人伦在线r▽| 四虎影视无码永久免费| 亚洲一区二区三区AV无码| 亚洲精品无码久久久久sm| 无码视频在线观看| 国产在线无码不卡影视影院 | 超清无码无卡中文字幕|