在线观看亚洲精品专区-在线观看亚洲免费-在线观看亚洲免费视频-在线观看亚洲欧美-欧美freexxx-欧美free嫩交video

食品伙伴網服務號
 
 
當前位置: 首頁 » 專業英語 » 英語短文 » 正文

長壽與否 與基因有關

放大字體  縮小字體 發布日期:2008-06-16
核心提示:This is the VOA Special English Health Report. Scientists continue to search for genetic answers to why some people live a long time. One study has now examined more than four hundred fifty people between the ages of ninety-five and one hundred ten.


    This is the VOA Special English Health Report.

    Scientists continue to search for genetic answers to why some people live a long time.

    One study has now examined more than four hundred fifty people between the ages of ninety-five and one hundred ten. Researchers at the Albert Einstein College of Medicine of Yeshiva University(耶希瓦大學(美國猶太教正統派最大、最古老的高等院校)愛因斯坦醫學院)in New York recently reported the latest findings.

    The study looked at changes in genes that govern an important cell-signaling pathway. These genes are involved in the action of a hormone that affects almost every kind of cell in the body. The hormone is called insulin-like growth factor, or IGF-one.

    Other researchers have found that mutations to the genes cause two effects in animals. The animals do not grow as big as others of their kind but they live longer. The Einstein team wondered if these changes might also influence how long humans live.

    So they looked for the mutations in their study group of Ashkenazi, or Eastern European, Jews. Ashkenazi Jews are more genetically similar than most other groups, so any differences are easier to find.

    The researchers compared the findings to other Ashkenazi Jews whose family members did not live as long. In the control group, they say, no one had the mutations. Yet even in the study group, where the average age was one hundred, only two percent of the people had them.

    In other words, there are more answers waiting to be found. In recent years, the scientists have even identified so-called longevity genes.

    The latest findings were published in the Proceedings of the National Academy of Sciences.

    The mutations were found mostly in women. Daughters of those who lived to be one hundred had higher levels of the hormone than people in the control group. And they were an average of two and a half centimeters shorter.

    A drug that decreases the action of the IGF-one hormone is currently being tested as a cancer treatment. Nir Barzilai, leader of the Einstein study, says the drug could be useful in delaying the effects of aging.

    But he noted that the subjects in the study were born with their mutations. So it is not clear whether the drug would help people who receive it later.

    Doctor Barzilai also points out that many people are receiving treatments with human growth hormone to try to delay the effects of aging. Yet he says if low growth-hormone action extends life, as the new findings suggest, then he wonders if getting more of it could shorten life.

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

 

 

更多翻譯詳細信息請點擊:http://www.trans1.cn
 
關鍵詞: 長壽 基因
[ 網刊訂閱 ]  [ 專業英語搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關閉窗口 ] [ 返回頂部 ]
分享:

 

 
推薦圖文
推薦專業英語
點擊排行
 
 
Processed in 8.319 second(s), 1185 queries, Memory 4.6 M
主站蜘蛛池模板: 久久久久久久久久免观看 | 狠狠干欧美 | 欧美xxxx性高清 | 狂野欧美性猛交xxxx免费 | 亚洲天天做夜夜做天天欢人人 | 欧美性free | 中文字幕在线观看一区 | 五月欧美激激激综合网色播 | 黄色日本视频网站 | 亚洲电影在线看 | 久久精品第一页 | 日a在线| 午夜激情影视 | 8天堂资源在线 | 免费在线观看大片影视大全 | 免费的色网站 | 三级黄色在线观看 | 热久久久久 | 亚洲国产系列 | 青青青久97在线观看香蕉 | 日本一区视频在线观看 | 亚洲成网 | 曰本裸色私人影院噜噜噜影院 | 日本黄色免费网址 | 糖心vlog麻豆精东影业传媒 | 综合7799亚洲伊人爱爱网 | 狠狠干干干 | 日本不卡高清免费 | 免费网站你懂得 | 素股中文字幕 | 成人性色生活片免费看爆迷你毛片 | 俄罗斯aaaaa一级毛片 | 婷婷久操| 新版天堂资源中文8在线 | 男女性接交无遮挡免费看视频 | www亚洲成人 | 久久香蕉国产线看观看精品yw | 狠狠丁香激情久久综合 | 天天干免费视频 | 日本不卡专区 | 日韩午夜片|