为什么有些人看着显老? 科学家发现罪魁基因!
<p><span word="It">It</span>'<span word="s">s</span> <span word="no">no</span> <span word="secret">secret</span> <span word="that">that</span> <span word="good">good</span> <span word="genes">genes</span> <span word="can">can</span> <span word="explain">explain</span> <span word="why">why</span> <span word="some">some</span> <span word="people">people</span> <span word="age">age</span> <span word="well">well</span>. <span word="But">But</span> <span word="researchers">researchers</span> <span word="said">said</span> <span word="last">last</span> <span word="Thursday">Thursday</span> <span word="they">they</span> <span word="have">have</span> <span word="identified">identified</span> <span word="a">a</span> <span word="specific">specific</span> <span word="gene">gene</span> <span word="variant">variant</span> <span word="that">that</span> <span word="can">can</span> <span word="make">make</span> <span word="people">people</span> <span word="look">look</span> <span word="about">about</span> <span word="two">two</span> <span word="years">years</span> <span word="older">older</span> <span word="than">than</span> <span word="their">their</span> <span word="actual">actual</span> <span word="age">age</span>.</p><p>众所周知，有些人看起来比较年轻的原因是拥有优良的基因。但研究人员在上周四表示，他们鉴定出一种特殊的基因变异，能使人们看起来比实际年龄要老两岁。</p><p><span word="Scientists">Scientists</span> <span word="already">already</span> <span word="know">know</span> <span word="that">that</span> <span word="the">the</span> <span word="gene">gene</span> <span word="in">in</span> <span word="question">question</span>, <span word="known">known</span> <span word="as">as</span> <span word="MC">MC</span>1<span word="R">R</span>, <span word="is">is</span> <span word="responsible">responsible</span> <span word="for">for</span> <span word="producing">producing</span> <span word="red">red</span> <span word="hair">hair</span> <span word="and">and</span> <span word="pale">pale</span> <span word="skin">skin</span>, <span word="according">according</span> <span word="to">to</span> <span word="the">the</span> <span word="report">report</span> <span word="in">in</span> <span word="the">the</span> <span word="journal">journal</span> <span word="Current">Current</span> <span word="Biology">Biology</span>. <span word="But">But</span> <span word="now">now</span> <span word="they">they</span> <span word="have">have</span> <span word="identified">identified</span> <span word="a">a</span> <span word="variation">variation</span> <span word="in">in</span> <span word="this">this</span> <span word="gene">gene</span> <span word="that">that</span> <span word="seems">seems</span> <span word="to">to</span> <span word="age">age</span> <span word="people">people</span> <span word="faster">faster</span>.</p><p>据《当代生物学》期刊报道，科学家们已经认识到这种被称为<span word="MC">MC</span>1<span word="R">R</span>的基因会导致头发发红、皮肤苍白。但是现在，他们在这种基因里发现了能使人们老得更快的变异。</p><p>"<span word="For">For</span> <span word="the">the</span> <span word="first">first</span> <span word="time">time</span>, <span word="a">a</span> <span word="gene">gene</span> <span word="has">has</span> <span word="been">been</span> <span word="found">found</span> <span word="that">that</span> <span word="explains">explains</span> <span word="in">in</span> <span word="part">part</span> <span word="why">why</span> <span word="some">some</span> <span word="people">people</span> <span word="look">look</span> <span word="older">older</span> <span word="and">and</span> <span word="others">others</span> <span word="younger">younger</span> <span word="for">for</span> <span word="their">their</span> <span word="age">age</span>," <span word="said">said</span> <span word="researcher">researcher</span> <span word="Manfred">Manfred</span> <span word="Kayser">Kayser</span> <span word="of">of</span> <span word="Erasmus">Erasmus</span> <span word="MC">MC</span> <span word="University">University</span> <span word="Medical">Medical</span> <span word="Center">Center</span> <span word="Rotterdam">Rotterdam</span> <span word="in">in</span> <span word="the">the</span> <span word="Netherlands">Netherlands</span>.</p><p>荷兰鹿特丹市伊拉斯谟大学医学中心的研究员曼弗雷德·凯瑟尔说：“我们第一次发现，基因可以在一定程度上解释为什么有些人显老，而有些人显年轻，”</p>
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