别人家的孩子更聪明? 科学家发现智慧基因
<p><span word="One">One</span> <span word="in">in</span> <span word="five">five</span> <span word="people">people</span> <span word="carry">carry</span> <span word="a">a</span> '<span word="smart">smart</span> <span word="gene">gene</span>' <span word="variant">variant</span> <span word="linked">linked</span> <span word="to">to</span> <span word="long">long</span> <span word="lifespan">lifespan</span>, <span word="bigger">bigger</span> <span word="forebrains">forebrains</span> <span word="and">and</span> <span word="enhanced">enhanced</span> <span word="mental">mental</span> <span word="ability">ability</span>, <span word="researchers">researchers</span> <span word="have">have</span> <span word="found">found</span>.</p><p>研究人员发现，每五个人中就有一个人携带“聪明基因”变体，携带这种基因的人更长寿，大脑的前额区域体积更大，心理能力也更强。</p><p><span word="Scientists">Scientists</span> <span word="found">found</span> <span word="people">people</span> <span word="who">who</span> <span word="carry">carry</span> <span word="the">the</span> <span word="gene">gene</span> <span word="have">have</span> <span word="larger">larger</span> <span word="volumes">volumes</span> <span word="in">in</span> <span word="a">a</span> <span word="front">front</span> <span word="part">part</span> <span word="of">of</span> <span word="the">the</span> <span word="brain">brain</span> <span word="involved">involved</span> <span word="in">in</span> <span word="planning">planning</span> <span word="and">and</span> <span word="decision">decision</span>-<span word="making">making</span>.</p><p>科学家们发现携带聪明基因的人，大脑中负责计划和决策功能的区域体积比其他人大。</p><p><span word="They">They</span> <span word="say">say</span> <span word="the">the</span> <span word="find">find</span> <span word="could">could</span> <span word="have">have</span> <span word="major">major</span> <span word="implications">implications</span> <span word="for">for</span> <span word="sufferers">sufferers</span> <span word="of">of</span> <span word="Alzheimer">Alzheimer</span>'<span word="s">s</span> <span word="and">and</span> <span word="other">other</span> <span word="forms">forms</span> <span word="of">of</span> <span word="dementia">dementia</span>.</p><p>科学家称该发现对治疗阿茨海默症及其他形式的痴呆症患者意义重大。</p><p><span word="It">It</span> <span word="follows">follows</span> <span word="the">the</span> <span word="previous">previous</span> <span word="discovery">discovery</span> <span word="that">that</span> <span word="middle">middle</span>-<span word="aged">aged</span> <span word="and">and</span> <span word="older">older</span> <span word="people">people</span> <span word="who">who</span> <span word="have">have</span> <span word="a">a</span> <span word="single">single</span> <span word="copy">copy</span> <span word="of">of</span> <span word="the">the</span> <span word="gene">gene</span> <span word="variant">variant</span> <span word="performed">performed</span> <span word="better">better</span> <span word="in">in</span> <span word="a">a</span> <span word="wide">wide</span> <span word="range">range</span> <span word="of">of</span> <span word="mental">mental</span> <span word="tests">tests</span>.</p><p>在此之前，曾有研究发现携带该基因变体副本的中老年人在一系列认知测验中的表现比不携带的人更加出色。</p><p>'<span word="We">We</span>'<span word="ve">ve</span> <span word="known">known</span> <span word="for">for</span> <span word="a">a</span> <span word="long">long</span> <span word="time">time</span> <span word="that">that</span> <span word="people">people</span> <span word="lose">lose</span> <span word="cognitive">cognitive</span> <span word="abilities">abilities</span> <span word="as">as</span> <span word="they">they</span> <span word="age">age</span>, <span word="but">but</span> <span word="now">now</span> <span word="we">we</span>'<span word="re">re</span> <span word="beginning">beginning</span> <span word="to">to</span> <span word="understand">understand</span> <span word="that">that</span> <span word="factors">factors</span> <span word="like">like</span> <span word="klotho">klotho</span> <span word="can">can</span> <span word="give">give</span> <span word="people">people</span> <span word="a">a</span> <span word="boost">boost</span> <span word="and">and</span> <span word="confer">confer</span> <span word="resilience">resilience</span> <span word="in">in</span> <span word="aging">aging</span>,' <span word="said">said</span> <span word="senior">senior</span> <span word="author">author</span> <span word="Dena">Dena</span> <span word="Dubal">Dubal</span> <span word="of">of</span> <span word="UCSF">UCSF</span>.</p><p>“我们早就知道，随着年龄的增长人们的认知能力会逐渐减退，但是现在我们开始发现如<span word="klotho">klotho</span>（克洛索）这样的基因能够帮助人们在衰老过程中保持弹性。”旧金山加利福尼亚大学的德纳·杜巴尔教授说。</p>
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