科学家发现年轻血液具有返老还童的神奇力量
<p><span word="Two">Two</span> <span word="teams">teams</span> <span word="of">of</span> <span word="scientists">scientists</span> <span word="published">published</span> <span word="studies">studies</span> <span word="on">on</span> <span word="Sunday">Sunday</span> <span word="showing">showing</span> <span word="that">that</span> <span word="blood">blood</span> <span word="from">from</span> <span word="young">young</span> <span word="mice">mice</span> <span word="reverses">reverses</span> <span word="aging">aging</span> <span word="in">in</span> <span word="old">old</span> <span word="mice">mice</span>, <span word="rejuvenating">rejuvenating</span> <span word="their">their</span> <span word="muscles">muscles</span> <span word="and">and</span> <span word="brains">brains</span>. <span word="As">As</span> <span word="ghoulish">ghoulish</span> <span word="as">as</span> <span word="the">the</span> <span word="research">research</span> <span word="may">may</span> <span word="sound">sound</span>, <span word="experts">experts</span> <span word="said">said</span> <span word="that">that</span> <span word="it">it</span> <span word="could">could</span> <span word="lead">lead</span> <span word="to">to</span> <span word="treatments">treatments</span> <span word="for">for</span> <span word="disorders">disorders</span> <span word="like">like</span> <span word="Alzheimer">Alzheimer</span>'<span word="s">s</span> <span word="disease">disease</span> <span word="and">and</span> <span word="heart">heart</span> <span word="disease">disease</span>.</p><p>两个科学家团队周日发布的研究表明，幼龄鼠的血液能逆转老龄鼠的衰老，让它们的肌肉和大脑恢复活力。相关研究听上去可能令人毛骨悚然，专家却表示，这可能会有助于阿尔茨海默氏征和心脏病的治疗。</p><p>"<span word="I">I</span> <span word="am">am</span> <span word="extremely">extremely</span> <span word="excited">excited</span>," <span word="said">said</span> <span word="Rudolph">Rudolph</span> <span word="Tanzi">Tanzi</span>, <span word="a">a</span> <span word="professor">professor</span> <span word="of">of</span> <span word="neurology">neurology</span> <span word="at">at</span> <span word="Harvard">Harvard</span> <span word="Medical">Medical</span> <span word="School">School</span>, <span word="who">who</span> <span word="was">was</span> <span word="not">not</span> <span word="involved">involved</span> <span word="in">in</span> <span word="the">the</span> <span word="research">research</span>. "<span word="These">These</span> <span word="findings">findings</span> <span word="could">could</span> <span word="be">be</span> <span word="a">a</span> <span word="game">game</span> <span word="changer">changer</span>."</p><p>“我非常激动，”未参与前述研究的哈佛大学医学院(<span word="Harvard">Harvard</span> <span word="Medical">Medical</span> <span word="School">School</span>)神经学教授鲁道夫·坦齐(<span word="Rudolph">Rudolph</span> <span word="Tanzi">Tanzi</span>)说，“这些发现可能会带来巨变。”</p><p><span word="The">The</span> <span word="research">research</span> <span word="builds">builds</span> <span word="on">on</span> <span word="centuries">centuries</span> <span word="of">of</span> <span word="speculation">speculation</span> <span word="that">that</span> <span word="the">the</span> <span word="blood">blood</span> <span word="of">of</span> <span word="young">young</span> <span word="people">people</span> <span word="contains">contains</span> <span word="substances">substances</span> <span word="that">that</span> <span word="might">might</span> <span word="rejuvenate">rejuvenate</span> <span word="older">older</span> <span word="adults">adults</span>.</p><p>这项研究是基于一个流传了数百年的猜测，即年轻人的血液可能含有能让老年人恢复活力的物质。</p><p><span word="In">In</span> <span word="the">the</span> 1950<span word="s">s</span>, <span word="Clive">Clive</span> <span word="M">M</span>. <span word="McCay">McCay</span> <span word="of">of</span> <span word="Cornell">Cornell</span> <span word="University">University</span> <span word="and">and</span> <span word="his">his</span> <span word="colleagues">colleagues</span> <span word="tested">tested</span> <span word="the">the</span> <span word="notion">notion</span> <span word="by">by</span> <span word="delivering">delivering</span> <span word="the">the</span> <span word="blood">blood</span> <span word="of">of</span> <span word="young">young</span> <span word="rats">rats</span> <span word="into">into</span> <span word="old">old</span> <span word="ones">ones</span>. <span word="To">To</span> <span word="do">do</span> <span word="so">so</span>, <span word="they">they</span> <span word="joined">joined</span> <span word="rats">rats</span> <span word="in">in</span> <span word="pairs">pairs</span> <span word="by">by</span> <span word="stitching">stitching</span> <span word="together">together</span> <span word="the">the</span> <span word="skin">skin</span> <span word="on">on</span> <span word="their">their</span> <span word="flanks">flanks</span>. <span word="After">After</span> <span word="this">this</span> <span word="procedure">procedure</span>, <span word="called">called</span> <span word="parabiosis">parabiosis</span>, <span word="blood">blood</span> <span word="vessels">vessels</span> <span word="grew">grew</span> <span word="and">and</span> <span word="joined">joined</span> <span word="the">the</span> <span word="rats">rats</span>' <span word="circulatory">circulatory</span> <span word="systems">systems</span>. <span word="The">The</span> <span word="blood">blood</span> <span word="from">from</span> <span word="the">the</span> <span word="young">young</span> <span word="rat">rat</span> <span word="flowed">flowed</span> <span word="into">into</span> <span word="the">the</span> <span word="old">old</span> <span word="one">one</span>, <span word="and">and</span> <span word="vice">vice</span> <span word="versa">versa</span>.</p>
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