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

 
 
 

Inherited vulnerability to drug addiction discovered

2012-02-08 14:37

 

Inherited vulnerability to drug addiction discovered

Scientists have discovered structural abnormalities in the brains of drug addicts and their non-addictedsiblings, a finding that suggests there may be an inherited vulnerability to addiction, and that behavioral therapies could help addicts recover.

Substance abuse is known to run in families, according to experts, who say that having an addicted family member increases a person's risk of addiction by eight to 10 percent above the general population.

Researchers have yet to identify an addiction gene. But Karen Esche at the University of Cambridge in Britain says the brain abnormalities found in addicts and their non-addicted siblings suggest these congenital differences might be to blame for the increased vulnerability to drug abuse.

"This may suggest that some of the impairments that we see in the drug users are not caused by the drugs or [do not] predispose them to addiction," Esche says.

Esche's team used magnetic resonance imaging to take pictures of the brains of cocaine addicts and their non-addicted siblings. The images showed the same patterns of abnormalities in the pre-frontal and striatal regions of the brain, patterns not evident in the brains of unrelated volunteers.

Researchers also tested the study participants to see how quickly they could switch from one task to another. The addicted sibling pairs fared much worse than the volunteers, suggesting high levels of impulsivity and a lack of self-control.

"Which again puts them at risk of taking drugs, because what we see in addiction is that that self-control gets lost," Esche says. "Loss of control - loss of control over drug use - is a hallmark of addiction."

Nora Volkow, director of the US National Institute on Drug Abuse, says the study suggests the brain abnormalities observed in the addicted sibling are not due to chronic and repeated drug abuse. She believes people with a biological vulnerability to drug abuse can resist the temptation, which is good news for drug addicts.

"Even if you have a vulnerability in your brain that makes those areas not function properly, you can overcome it by interventions that can help you strengthen it," she says.

Volkow says aerobic exercise has been shown to improve impulse control. So, too, have computer training programs designed to strengthen the pre-frontal areas of the brain that have been implicated in addiction.

A study by the University of Cambridge Karen Esche and her collegues on brain abnormalities cocaine addicts and their non-addicted siblings is published in the Journal Science.

siblings: 兄弟姐妹;同胞

Related Stories:

Autism test could use images of brain

New findings on children and mental illness

Study links brain abnormalities to SIDS

Va. Tech remembers victims as classes resume

(來源:VOA 編輯:Rosy)

 
中國日報網(wǎng)英語點(diǎn)津版權(quán)說明:凡注明來源為“中國日報網(wǎng)英語點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國日報網(wǎng)簽署英語點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請與010-84883561聯(lián)系;凡本網(wǎng)注明“來源:XXX(非英語點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請與稿件來源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國日報網(wǎng)雙語新聞

掃描左側(cè)二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國日報雙語手機(jī)報

點(diǎn)擊左側(cè)圖標(biāo)查看訂閱方式

中國首份雙語手機(jī)報
學(xué)英語看資訊一個都不能少!

關(guān)注和訂閱

本文相關(guān)閱讀
人氣排行
搜熱詞
 
 
精華欄目
 

閱讀

詞匯

視聽

翻譯

口語

合作

 

關(guān)于我們 | 聯(lián)系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權(quán)聲明:本網(wǎng)站所刊登的中國日報網(wǎng)英語點(diǎn)津內(nèi)容,版權(quán)屬中國日報網(wǎng)所有,未經(jīng)協(xié)議授權(quán),禁止下載使用。 歡迎愿意與本網(wǎng)站合作的單位或個人與我們聯(lián)系。

電話:8610-84883645

傳真:8610-84883500

Email: languagetips@chinadaily.com.cn

主站蜘蛛池模板: 中文字幕一区视频一线 | 亚洲视频男人的天堂 | 韩国女主播青草在线观看 | 色偷偷女男人的天堂亚洲网 | 日韩午夜三级 | 免费人成在线观看 | 美女一级片视频 | 91资源在线 | 香港国产特级一级毛片 | 国产亚洲精品yxsp | 97天天干| 日韩在线观看一区 | 成年人免费网站视频 | 亚洲成a人片在线观看中文 亚洲成a人片在线观看中文!!! | 日本a级特黄三级三级三级 日本a一级片 | 亚洲国产精品一区二区不卡 | 久章草在线 | 偷柏自拍亚洲欧美综合在线图 | 日本a级在线 | 精品国产综合区久久久久99 | 香港经典a毛片免费观看看 香港经典a毛片免费观看爽爽影院 | 免费特黄一区二区三区视频一 | 久久性妇女精品免费 | 亚洲永久中文字幕在线 | 最新亚洲人成网站在线影院 | 美女在线看永久免费网址 | 成人在线免费看 | 99在线精品视频在线观看 | 欧美午夜视频一区二区 | 亚洲欧美国产视频 | 普通话对白国产情侣自啪 | 手机看片1024精品国产 | 粉嫩高中生的第一次在线观看 | 欧美日韩精品一区二区三区 | 国产精品久久久久久久y | 国产日产高清欧美一区二区三区 | 成人黄网大全在线观看 | 国产网曝手机视频在线观看 | 亚洲成人高清在线观看 | 国产精品三级手机在线观看 | 手机看片自拍自自拍日韩免费 |