久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

 
 
 

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(lái)源:VOA 編輯:Rosy)

 
中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津版權(quán)說(shuō)明:凡注明來(lái)源為“中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國(guó)日?qǐng)?bào)網(wǎng)簽署英語(yǔ)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(qǐng)與010-84883561聯(lián)系;凡本網(wǎng)注明“來(lái)源:XXX(非英語(yǔ)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(qǐng)與稿件來(lái)源方聯(lián)系,如產(chǎn)生任何問(wèn)題與本網(wǎng)無(wú)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(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國(guó)日?qǐng)?bào)網(wǎng)雙語(yǔ)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(guó)日?qǐng)?bào)雙語(yǔ)手機(jī)報(bào)

點(diǎn)擊左側(cè)圖標(biāo)查看訂閱方式

中國(guó)首份雙語(yǔ)手機(jī)報(bào)
學(xué)英語(yǔ)看資訊一個(gè)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(tīng)

翻譯

口語(yǔ)

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(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津內(nèi)容,版權(quán)屬中國(guó)日?qǐng)?bào)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(gè)人與我們聯(lián)系。

電話:8610-84883645

傳真:8610-84883500

Email: [email protected]

主站蜘蛛池模板: 日本不卡免费高清一级视频 | a级免费网站 | 日本午色www高清视频 | 乱人伦中文视频在线 | 国产欧美视频一区二区三区 | www.91亚洲| 欧美一级美片在线观看免费 | 国产高清精品自在久久 | 天堂影院jav成人天堂免费观看 | cao美女视频网站在线观看 | 久久99国产精品免费观看 | 美国毛片免费一级 | caoporen个人免费公开视频 | 欧美xxxx性xxxxx高清视频 | 久久精品一 | 国产在线观看精品香蕉v区 国产在线观看免费人成小说 | 一级片免费在线播放 | 黄色a网| 在线一区国产 | 久久成人精品视频 | 狠狠综合久久久久综合 | 午夜视频在线观看一区 | 国产成人在线网址 | 欧美日韩顶级毛片www免费看 | 91亚洲免费 | 午夜一级毛片免费视频 | 欧美在线bdsm调教一区 | 一品道一本香蕉视频 | 美女又黄又免费视频 | 超薄肉色丝袜精品足j福利 超级乱淫视频aⅴ播放视频 | 久久99久久精品久久久久久 | 亚洲日本高清成人aⅴ片 | 在线观看日本免费视频大片一区 | 欧美色穴| 黄色影院在线 | 国产在线不卡视频 | 青草青99久久99九九99九九九 | 18video9ex欧美生活片 | 天堂影院jav成人天堂免费观看 | 欧美一区二区三区男人的天堂 | 欧美一区二区三区不卡免费观看 |