久久国产成人av_抖音国产毛片_a片网站免费观看_A片无码播放手机在线观看,色五月在线观看,亚洲精品m在线观看,女人自慰的免费网址,悠悠在线观看精品视频,一级日本片免费的,亚洲精品久,国产精品成人久久久久久久

分享

研究:吸煙可永久改變基因

 紫気東來 2016-11-07

吸煙有害身體健康已經(jīng)人盡皆知,,近些年已經(jīng)有越來越多的人加入戒煙行列,。大多數(shù)人都覺得,戒煙了總沒事兒了吧,?最新研究結(jié)果顯示,,真相并非如此:研究顯示,吸煙導(dǎo)致的基因突變會(huì)伴隨你一生,。

研究:吸煙可永久改變基因

Smoking leaves an "archaeological record" of the hundreds of DNA mutations it causes, scientists have discovered. 科學(xué)家研究發(fā)現(xiàn),吸煙會(huì)導(dǎo)致DNA突變,,給人留下數(shù)百種基因突變的“永久記錄”,。

Having sequenced thousands of tumour genomes, they found a 20-a-day smoker would rack up an average of 150 mutations in every lung cell each year. 在對數(shù)千個(gè)腫瘤基因組進(jìn)行測序后,科學(xué)家發(fā)現(xiàn)每天吸煙20支的人每年每個(gè)肺細(xì)胞累積平均有150個(gè)基因突變,。

The changes are permanent, and persist even if someone gives up smoking. 這些突變是永久且持續(xù)的,,即使吸煙者戒煙也不可逆。

Researchers say analysing tumour DNA may help explain the underlying causes of other cancers. 研究人員說,,分析腫瘤DNA能幫助解釋其他癌癥的深層原因,。

Pamela Pugh, 69, was diagnosed with lung cancer in 2013. She started smoking aged 17 and quit in her early 50s. 69歲的帕梅拉-皮尤2013年被診斷患有肺癌。她自17歲開始吸煙,,近50歲時(shí)戒煙,。

But she said: "Even though I gave up many years ago, the effects of smoking caught up with me. 但她說:“盡管我很多年前就戒煙了,但吸煙的影響一直在,?!?/p>

"Had I known as a teenager that smoking caused mutations which would stay with me for life then I would never had started". “如果年輕時(shí)我知道吸煙導(dǎo)致的基因突變一生都會(huì)跟隨著我,那么我絕不會(huì)開始吸煙,?!?/p>

The study, in the journal Science, was carried out by an international group, including the Wellcome Trust Sanger Institute in Cambridgeshire and the Los Alamos National Laboratory in New Mexico.

這項(xiàng)研究發(fā)表在《科學(xué)》期刊上,由一個(gè)國際研究組研究得出,,包括英國劍橋郡的基金會(huì)桑格研究院,,以及美國新墨西哥州的洛斯阿拉莫斯國家實(shí)驗(yàn)室。

The analysis shows a direct link between the number of cigarettes smoked in a lifetime and the number of mutations in tumour DNA. 研究顯示,,人一生中吸煙的總數(shù)量和腫瘤DNA變異的數(shù)量之間存在直接關(guān)系,。

The authors found that, on average, smoking a packet of cigarettes a day led to: 研究作者發(fā)現(xiàn),,平均來講,每天吸一包煙會(huì)導(dǎo)致:

150 mutations in each lung cell every year 每年每個(gè)肺部細(xì)胞中有150個(gè)基因突變,。

97 in the larynx or voice box 喉部或喉頭97個(gè)突變

23 in the mouth 口腔部位23個(gè)突變

18 in the bladder 膀胱18個(gè)突變

six in the liver 肝臟6個(gè)突變

Joint lead author Prof Sir Mike Stratton, from the Wellcome Trust Sanger Institute, said: "The more mutations there are, the higher the chance that these will occur in the key genes that we call cancer genes, which convert a normal cell into a cancer cell." 研究報(bào)告的合作主創(chuàng)者,、來自基金會(huì)桑格研究院的邁克-斯特拉頓教授說:“突變越多,關(guān)鍵基因,,也就是我們所說的癌癥基因發(fā)生突變的幾率也就越大,,這會(huì)將正常細(xì)胞轉(zhuǎn)變?yōu)榘┘?xì)胞?!?/p>

There are 35,000 deaths a year in the UK from lung cancer, and it is estimated that nine out of 10 cases are preventable. 英國每年有3.5萬人死于癌癥,,據(jù)估計(jì)其中九成可以預(yù)防。

英文來源:BBC 翻譯&編審:yaning

耶穌說:抽煙有道德 ,;二戰(zhàn)時(shí),,三個(gè)老煙槍(斯大林,丘吉爾,,羅斯福)弄掉了一個(gè)不抽煙的(希特勒),,同時(shí)期的中國也一樣;愛因斯坦說:不抽煙咋弄,。哇靠,,抽煙這么牛逼!

話說一記者采訪百歲壽星,,問您是怎樣保持如此高壽的,,只見壽星說,不抽煙,,不喝酒,,不發(fā)脾氣,突然忽聽得屋里面乒乓的摔東西聲,,問壽星怎么回事,,只見壽星說,唉又是我爹喝了酒找不到煙抽了發(fā)脾氣摔東西哩,。

前天有專家說吸煙引起癌癥,,昨天又有專家說吸煙與癌癥毛關(guān)系都沒,今天又站出個(gè)吸煙會(huì)引起基因突變,。我們只能得出結(jié)論:吸與不吸,,該死的總會(huì)死!



    本站是提供個(gè)人知識(shí)管理的網(wǎng)絡(luò)存儲(chǔ)空間,,所有內(nèi)容均由用戶發(fā)布,,不代表本站觀點(diǎn)。請注意甄別內(nèi)容中的聯(lián)系方式、誘導(dǎo)購買等信息,,謹(jǐn)防詐騙,。如發(fā)現(xiàn)有害或侵權(quán)內(nèi)容,請點(diǎn)擊一鍵舉報(bào),。
    轉(zhuǎn)藏 分享 獻(xiàn)花(0

    0條評論

    發(fā)表

    請遵守用戶 評論公約

    類似文章 更多