英科学家发现神奇蛋白 可让白发变黑
<p><span word="Scientists">Scientists</span> <span word="have">have</span> <span word="got">got</span> <span word="to">to</span> <span word="the">the</span> <span word="root">root</span> <span word="of">of</span> <span word="grey">grey</span> <span word="hair">hair</span> – <span word="paving">paving</span> <span word="the">the</span> <span word="way">way</span> <span word="for">for</span> <span word="locks">locks</span> <span word="that">that</span> <span word="retain">retain</span> <span word="the">the</span> <span word="lustre">lustre</span> <span word="of">of</span> <span word="their">their</span> <span word="youth">youth</span> <span word="well">well</span> <span word="into">into</span> <span word="old">old</span> <span word="age">age</span>. <span word="In">In</span> <span word="a">a</span> <span word="series">series</span> <span word="of">of</span> <span word="experiments">experiments</span>, <span word="they">they</span> <span word="have">have</span> <span word="identified">identified</span> <span word="a">a</span> <span word="protein">protein</span> <span word="called">called</span> '<span word="wnt">wnt</span>' <span word="found">found</span> <span word="to">to</span> <span word="be">be</span> <span word="vital">vital</span> <span word="to">to</span> <span word="the">the</span> <span word="production">production</span> <span word="of">of</span> <span word="colour">colour</span> <span word="in">in</span> <span word="hairs">hairs</span>. <span word="The">The</span> <span word="breakthrough">breakthrough</span> <span word="raises">raises</span> <span word="the">the</span> <span word="prospects">prospects</span> <span word="of">of</span> <span word="drugs">drugs</span>, <span word="lotions">lotions</span> <span word="or">or</span> <span word="shampoos">shampoos</span> <span word="that">that</span> <span word="raise">raise</span> <span word="levels">levels</span> <span word="of">of</span> <span word="wnt">wnt</span> – <span word="and">and</span> <span word="restore">restore</span> <span word="white">white</span> <span word="or">or</span> <span word="grey">grey</span> <span word="hair">hair</span> <span word="to">to</span> <span word="its">its</span> <span word="natural">natural</span> <span word="colour">colour</span>. <span word="Such">Such</span> <span word="a">a</span> <span word="treatment">treatment</span> <span word="would">would</span> <span word="save">save</span> <span word="women">women</span> <span word="of">of</span> <span word="a">a</span> <span word="certain">certain</span> <span word="age">age</span> <span word="the">the</span> <span word="need">need</span> <span word="to">to</span> <span word="make">make</span> <span word="endless">endless</span> <span word="expensive">expensive</span> <span word="trips">trips</span> <span word="to">to</span> <span word="the">the</span> <span word="hair">hair</span> <span word="salon">salon</span> <span word="to">to</span> <span word="have">have</span> <span word="their">their</span> <span word="greying">greying</span> <span word="roots">roots</span> <span word="covered">covered</span> <span word="up">up</span>.</p><p>每天还在为“染发”而苦恼吗？看着一缕一缕的白发还在心寒么？有常言道：“一夜白了头”，大家都认为焦急忧虑的情绪会催生白发的生长速度，科学家近日发现了头发变白的原因：“<span word="Wnt">Wnt</span>”蛋白质在作怪，该蛋白能够促进头发干细胞发育，分泌头发所需的色素。据悉，当所谓的“<span word="Wnt">Wnt</span>”蛋白质捆绑头发内所含“黑素细胞”的时候，就会激活黑素细胞加速分裂，紧接着，黑素干细胞会产生所谓的“子细胞”。而黑素细胞“子细胞”继续产生黑色素，并注入头发之中。此外，这些“子细胞”产生黑色素的多少，跟个人基因有很大关系，这就是为何人的头发会有浅黑、金发、红发等多种颜色，而<span word="Wnt">Wnt</span>蛋白质的多少还和我们日常服用的药品、头发上涂抹的洗头膏以及护发素有着紧密的关系。</p><p><span word="It">It</span> <span word="would">would</span> <span word="also">also</span> <span word="doubtless">doubtless</span> <span word="be">be</span> <span word="popular">popular</span> <span word="with">with</span> <span word="middle">middle</span>-<span word="aged">aged</span> <span word="men">men</span> <span word="keen">keen</span> <span word="to">to</span> <span word="recapture">recapture</span> <span word="their">their</span> <span word="youthful">youthful</span> <span word="looks">looks</span>. <span word="The">The</span> <span word="U">U</span>.<span word="S">S</span>. <span word="researchers">researchers</span> <span word="describe">describe</span> <span word="a">a</span> <span word="series">series</span> <span word="of">of</span> <span word="experiments">experiments</span> <span word="which">which</span> <span word="reveal">reveal</span> <span word="wnt">wnt</span> <span word="to">to</span> <span word="be">be</span> <span word="key">key</span> <span word="to">to</span> <span word="hair">hair</span> <span word="retaining">retaining</span> <span word="its">its</span> <span word="colour">colour</span>. <span word="Writing">Writing</span> <span word="in">in</span> <span word="the">the</span> <span word="journal">journal</span> <span word="Cell">Cell</span>, <span word="they">they</span> <span word="show">show</span> <span word="that">that</span> <span word="the">the</span> <span word="protein">protein</span> <span word="kick">kick</span>-<span word="starts">starts</span> <span word="a">a</span> <span word="chain">chain</span> <span word="of">of</span> <span word="reactions">reactions</span> <span word="which">which</span> <span word="lead">lead</span> <span word="to">to</span> <span word="stem">stem</span> <span word="or">or</span> '<span word="mother">mother</span>' <span word="cells">cells</span> <span word="in">in</span> <span word="the">the</span> <span word="scalp">scalp</span> <span word="maturing">maturing</span> <span word="and">and</span> <span word="producing">producing</span> <span word="the">the</span> <span word="pigment">pigment</span> <span word="that">that</span> <span word="gives">gives</span> <span word="hair">hair</span> <span word="its">its</span> <span word="colour">colour</span>. <span word="The">The</span> <span word="researchers">researchers</span> <span word="said">said</span> <span word="that">that</span> <span word="young">young</span> <span word="women">women</span> <span word="who">who</span> <span word="use">use</span> <span word="hydrogen">hydrogen</span> <span word="peroxide">peroxide</span>-<span word="based">based</span> <span word="dyes">dyes</span> <span word="to">to</span> <span word="lighten">lighten</span> <span word="their">their</span> <span word="hair">hair</span> <span word="should">should</span> <span word="not">not</span> <span word="necessarily">necessarily</span> <span word="worry">worry</span>. <span word="In">In</span> <span word="older">older</span> <span word="women">women</span> <span word="though">though</span>, <span word="going">going</span> <span word="blonde">blonde</span> <span word="may">may</span> <span word="speed">speed</span> <span word="up">up</span> <span word="the">the</span> <span word="greying">greying</span> <span word="process">process</span>. <span word="It">It</span> <span word="is">is</span> <span word="thought">thought</span> <span word="that">that</span> <span word="genetics">genetics</span> <span word="control">control</span> <span word="if">if</span> <span word="and">and</span> <span word="when">when</span> <span word="a">a</span> <span word="person">person</span> <span word="will">will</span> <span word="go">go</span> <span word="grey">grey</span>, <span word="although">although</span> <span word="stress">stress</span>, <span word="alcohol">alcohol</span>, <span word="smoking">smoking</span> <span word="and">and</span> <span word="poor">poor</span> <span word="diet">diet</span> <span word="are">are</span> <span word="all">all</span> <span word="thought">thought</span> <span word="to">to</span> <span word="accelerate">accelerate</span> <span word="the">the</span> <span word="process">process</span>. <span word="Most">Most</span> <span word="Britons">Britons</span> <span word="spot">spot</span> <span word="their">their</span> <span word="first">first</span> <span word="grey">grey</span> <span word="hairs">hairs</span> <span word="around">around</span> <span word="the">the</span> <span word="age">age</span> <span word="of">of</span> 25.</p>
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