研究表明 基因或是导致中年发福的原因
<p><span word="U">U</span>.<span word="S">S</span>. <span word="researchers">researchers</span> <span word="said">said</span> <span word="Tuesday">Tuesday</span> <span word="that">that</span> <span word="they">they</span> <span word="have">have</span> <span word="identified">identified</span> <span word="an">an</span> <span word="enzyme">enzyme</span> <span word="that">that</span> <span word="may">may</span> <span word="play">play</span> <span word="a">a</span> <span word="central">central</span> <span word="role">role</span> <span word="in">in</span> <span word="the">the</span> <span word="development">development</span> <span word="of">of</span> <span word="obesity">obesity</span> <span word="in">in</span> <span word="mid">mid</span>-<span word="life">life</span>.</p><p>美国研究人员上周二表示，他们发现了一种可能在中年人发福现象中起到核心作用的酶。</p><p><span word="In">In</span> <span word="two">two</span> <span word="groups">groups</span> <span word="of">of</span> <span word="mice">mice</span> <span word="being">being</span> <span word="fed">fed</span> <span word="high">high</span>-<span word="fat">fat</span> <span word="foods">foods</span>, <span word="those">those</span> <span word="who">who</span> <span word="received">received</span> <span word="an">an</span> <span word="inhibitor">inhibitor</span> <span word="that">that</span> <span word="blocked">blocked</span> <span word="the">the</span> <span word="enzyme">enzyme</span> <span word="had">had</span> <span word="a">a</span> 40 <span word="percent">percent</span> <span word="decrease">decrease</span> <span word="in">in</span> <span word="weight">weight</span> <span word="gain">gain</span> <span word="compared">compared</span> <span word="with">with</span> <span word="those">those</span> <span word="that">that</span> <span word="did">did</span> <span word="not">not</span> <span word="receive">receive</span> <span word="the">the</span> <span word="drug">drug</span>.</p><p>在两组喂食高脂肪食物的小白鼠中，一组被使用了阻断这种酶的抑制剂，结果发现，相比于另一组没有用药的小白鼠，这组小白鼠的体重增加量要低40%。</p><p><span word="The">The</span> <span word="findings">findings</span>, <span word="published">published</span> <span word="in">in</span> <span word="the">the</span> <span word="U">U</span>.<span word="S">S</span>. <span word="journal">journal</span> <span word="Cell">Cell</span> <span word="Metabolism">Metabolism</span>, <span word="could">could</span> <span word="upend">upend</span> <span word="current">current</span> <span word="notions">notions</span> <span word="about">about</span> <span word="why">why</span> <span word="people">people</span> <span word="gain">gain</span> <span word="weight">weight</span> <span word="as">as</span> <span word="they">they</span> <span word="age">age</span>, <span word="and">and</span> <span word="could">could</span> <span word="one">one</span> <span word="day">day</span> <span word="lead">lead</span> <span word="to">to</span> <span word="more">more</span> <span word="effective">effective</span> <span word="weight">weight</span>-<span word="loss">loss</span> <span word="medications">medications</span>.</p><p>刊载于美国杂志《细胞新陈代谢》上的该发现，可能会颠覆人们对于随着年龄增长身体发福这一现象的认知，或许有一天能够有助于研制出更有效的减肥药。</p>
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