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当前位置:首页 -> 11级英语阅读 - > 老鼠的衰老迹象得到逆转
老鼠的衰老迹象得到逆转
添加时间:2018-05-31 20:39:29 浏览次数: 作者:未知
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  • Scientists revealed in a groundbreaking study that they have successfully slowed aging process in mice, and they're hoping the development will lead to an anti-ageing pill that would work on humans.

    科学家们在一项突破性的研究中发现,他们已经成功地延缓了老鼠衰老的进程,他们希望这一进展能带来一种对人类起作用的抗衰老药物。

    In a five-year study, published in journal Cell, researchers report that they have found a molecule1 that essentially2 reactivates faltering3 blood flow in elderly mice, Time Magazine reports.

    据《时代周刊》报道,研究人员在《细胞》杂志上发表了一项为期五年的研究报告,称他们已经发现了本质上可以重新激活年老老鼠不稳定血流的一种分子。

    Compromised blood flow is a major component4 of ageing, as it deprives tissues and organs, including the brain, of the nutrients5 and oxygen they need to function.

    血液老化是衰老的根源,因为它剥夺了需要发挥作用的组织和器官(包括大脑)所需的营养和氧气。

    The compound, called nicotinamide mononucleotide (NMN), a form of vitamin B3 that is naturally produced by the body, was fed to the 20-month-old mice, an age comparable to 70 years in people.

    一种叫做烟酰胺单核苷酸(NMN)的化合物被喂给了20个月大(相当于70岁的人类)的老鼠。NMN是身体自然生成的维生素B3的一种形式。

    After being treated with NMN for two months, it increased muscular blood flow, enhanced physical performance and endurance, and the older mice eventually became as fit and strong as the younger ones.

    在接受NMN治疗两个月后,老鼠肌肉的血流量增加了,体力和耐力也增强了,年老的老鼠最终变得和年轻的老鼠一样健康强壮。

    Specifically, researchers found the treadmill6 time of the mice increased by 60 percent in comparison with other animals, which means the pill could mimic7 the benefits of exercise.

    具体来说,研究人员发现,和其他动物相比,这些老鼠在跑步机上的时间增加了60%,这意味着该化学物质可以拟态运动的益处。

     11级    英文科普 


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    1 molecule [ˈmɒlɪkju:l] Y6Tzn   第7级
    n.分子,克分子
    参考例句:
    • A molecule of water is made up of two atoms of hygrogen and one atom of oxygen. 一个水分子是由两个氧原子和一个氢原子组成的。
    • This gives us the structural formula of the molecule. 这种方式给出了分子的结构式。
    2 essentially [ɪˈsenʃəli] nntxw   第8级
    adv.本质上,实质上,基本上
    参考例句:
    • Really great men are essentially modest. 真正的伟人大都很谦虚。
    • She is an essentially selfish person. 她本质上是个自私自利的人。
    3 faltering ['fɔ:ltərɪŋ] b25bbdc0788288f819b6e8b06c0a6496   第8级
    犹豫的,支吾的,蹒跚的
    参考例句:
    • The economy shows no signs of faltering. 经济没有衰退的迹象。
    • I canfeel my legs faltering. 我感到我的腿在颤抖。
    4 component [kəmˈpəʊnənt] epSzv   第7级
    n.组成部分,成分,元件;adj.组成的,合成的
    参考例句:
    • Each component is carefully checked before assembly. 每个零件在装配前都经过仔细检查。
    • Blade and handle are the component parts of a knife. 刀身和刀柄是一把刀的组成部分。
    5 nutrients ['nju:trɪənts] 6a1e1ed248a3ac49744c39cc962fb607   第8级
    n.(食品或化学品)营养物,营养品( nutrient的名词复数 )
    参考例句:
    • a lack of essential nutrients 基本营养的缺乏
    • Nutrients are absorbed into the bloodstream. 营养素被吸收进血液。 来自《简明英汉词典》
    6 treadmill [ˈtredmɪl] 1pOyz   第12级
    n.踏车;单调的工作
    参考例句:
    • The treadmill has a heart rate monitor. 跑步机上有个脉搏监视器。
    • Drugs remove man from the treadmill of routine. 药物可以使人摆脱日常单调的工作带来的疲劳。
    7 mimic [ˈmɪmɪk] PD2xc   第9级
    vt.模仿,戏弄;n.模仿他人言行的人
    参考例句:
    • A parrot can mimic a person's voice. 鹦鹉能学人的声音。
    • He used to mimic speech peculiarities of another. 他过去总是模仿别人讲话的特点。

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