www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

您現在的位置: Language Tips> Audio & Video> Special Speed News  
   
 





 
Study finds treatment cured sickle cell in 9 adults
[ 2009-12-17 10:39 ]

 

This is the VOA Special English Health Report.

Last week, researchers in the United States reported curing nine adults with sickle cell disease. Ten patients in all were treated in a study with donated bone marrow. The healthy marrow causes new blood cells to form.

Sickle cell disease, also called sickle cell anemia, is a genetic condition that deforms red blood cells. They become sticky and harden into the shape of the letter C, like a sickle, a hand tool with a curved blade.

Study finds treatment cured sickle cell in 9 adults

The deformed cells block blood vessels and cut off the flow of oxygen to tissue in the body. People with sickle cell disease can suffer severe pain, bacterial infections and the death of tissue.

In other studies, bone marrow transplants cured severe sickle cell disease in almost 200 children. Doctors first used chemicals to destroy the children's own marrow, then replaced it with healthy marrow.

However, doctors have considered this treatment too risky for adults with the disease. Their major organs are already too damaged to have all their bone marrow destroyed.

So for the ten patients in the study, doctors used a low amount of radiation to destroy only some of their marrow. Then the patients received healthy marrow. There was enough space in the bone for the healthy marrow to start producing new red blood cells.

The researchers say all ten patients remain alive two and a half years after the treatment, and the disease has disappeared in nine of them.

Marrow is a soft, spongy tissue inside bones. Doctors can collect it with a needle. But people who donate marrow must first have tests to make sure they are a good match for the patient.

The New England Journal of Medicine published the study. John Tisdale at the National Institutes of Health was the lead investigator. He says other uses for the treatment are also likely to be found.

Black people in Africa are the huge majority of those with sickle cell disease. About 200,000 cases are found in African children every year. About 80,000 people have it in the United States.

A study published in September in the Lancet said antibacterial vaccines could save the lives of children with sickle cell in Africa. The study pointed out that many children die before they are even identified as having the disease. They die from bacterial infections for which there are new vaccines. But these vaccines are costly and available mainly in wealthy countries.

And that's the VOA Special English Health Report, written by Caty Weaver. For more health news, go to voaspecialenglish.com. I'm Steve Ember.

sickle cell: an abnormal, crescent-shaped red blood cell that results from a single change in the amino acid sequence of the cell's hemoglobin, which causes the cell to contort, especially under low-oxygen conditions 鐮狀紅細胞

anemia: a pathological deficiency in the oxygen-carrying component of the blood, measured in unit volume concentrations of hemoglobin, red blood cell volume, or red blood cell number 貧血

sickle: an implement having a semicircular blade attached to a short handle, used for cutting grain or tall grass 鐮刀

Related stories:

80 kids suffer lead poisoning

Blood touts face longer jail terms

Looking for new ways to fight Malaria

A combination pill lowers blood pressure

(來源:VOA 編輯:陳丹妮)

 

 

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。
相關文章 Related Story
 
 
 
本頻道最新推薦
 
天舒訪談:讓工作來找你
Angry NGOs march out of conference
零排放車輛 zero-emission vehicle
研究:婚姻有益于心理健康
借火搭訕 smirting
翻吧推薦
 
論壇熱貼
 
萬圣節問題火熱征集!
翻譯達人評選,快來投票!
經典英語口語,不得不看(推薦)
I chocolate you!怎么翻譯?
請教obama演講里的一句話
 

 

主站蜘蛛池模板: 国产成人综合网在线观看 | 一区二区三区免费高清视频 | 欧美日韩视频在线 | 国产精品美女视视频专区 | 一及毛片 | 国产精品久久久久久影视 | 日韩欧美一区二区三区免费观看 | 国产成人精品免费视频大 | 视频在线观看一区 | 成人日韩在线观看 | 美女黄页黄频 | 久久久久久亚洲精品不卡 | 欧美性欲视频 | 国产一级做a爱片久久毛片a | 亚洲 成人 欧美 自拍 | 久青草免费视频 | 国产99久久亚洲综合精品 | 黄色毛片在线 | 免费看a级| 国产一区二区在线视频 | 国产精品高清免费网站 | 国产色司机在线视频免费观看 | 性色a v 一区 | 国产精品成人观看视频网站 | 韩国一级做a爰片性色毛片 韩国一区在线 | 久久久久久久综合色一本 | 中文字幕有码视频 | 精品国产三级在线观看 | 亚洲 成人 欧美 自拍 | 美女张开腿让男人捅的视频 | 国产欧美一区二区三区免费 | 免费国产成人高清在线观看不卡 | 国产亚洲精品一区二区在线观看 | 日本欧美高清 | 国产在线91区精品 | 国产精品一区二区资源 | 免费视频成人 | 免费a级毛片无码 | 国产真实乱子伦精品视手机观看 | 久久精品vr中文字幕 | 国产精品一区二区在线观看 |