VOA慢速英语(翻译+字幕+讲解):新发现基因或有助于孕妇足月生产
日期:2017-09-27 11:30

(单词翻译:单击)

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听力文本

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Discovery May Help Pregnant Women Carry Babies to Full Term
For the first time, researchers have identified six genes that control the length of a pregnancy. And they say the genes may show whether or not a baby is born early.
Preterm birth -- when a baby is born too early -- is a large cause of disability and death among the very young.
Fifteen million babies worldwide are born too soon every year. Their lungs may be too small an d undeveloped. They struggle to breathe. Many of them die. For those who survive, problems from being born too early can affect them all their lives.
Preterm birth is the leading cause of death among children under the age of five years worldwide.
A pregnancy normally lasts about 40 weeks. An infant is considered full term if the baby is born after 37 weeks in the mother's womb. One study found that a small number of babies born at just 22 weeks gestation have survived with medical treatment.
But even late preterm babies are more likely to die or experience problems, even if they are the size and weight of some full-term infants. Late preterm babies are ones born between 34 and 36 weeks of gestation.
Now, a group of researchers may have found a way to understand the causes of this complex disorder.
The researchers looked at the genetic structure in 50,000 pregnant women. It was the largest study yet of DNA, or deoxyribonucleic acid. The study found six genes that seemed to control how long a baby would stay in the mother's womb.
Dr. Louis Muglia is the co-director of the Perinatal Institute at Cincinnati Children's Hospital Medical Center in Ohio. He helped organize the study, and explains what the researchers found.
"For the first time, we have the clues that are going to lead us to rational ways of understanding a woman's risk for preterm birth."
Dr. Muglia says scientists have known for a long time that preterm birth involves a combination of genetic and environmental causes.
One of the newly identified genes is involved in how the body uses the mineral selenium. Selenium is found in soil, seafood and meat. It is also sold in some stores, but not currently included in vitamin supplements women usually take while pregnant.
Selenium supplements are low-cost. If the results of the study are confirmed, this could save millions of lives.
Supplements such as folic acid have been shown to greatly reduce birth defects. Folic acid, a B vitamin, is added to food in many countries to help prevent health problems.
Another finding is that the cells lining a woman's uterus have a larger-than-expected influence on the length of pregnancy.
This study showed that the genes thought to be responsible for the timing of the birth were from the mother.
"For the first time, we have an idea of what tissue in the mom is the one that's likely driving the one for preterm birth."
The March of Dimes provided money to help pay for the research. Stacey Stewart works with the non-profit group.
"We think this is an important breakthrough in finding solutions to end premature birth, which is the leading cause of death for children between the ages of zero and five and the leading cause of disabilities for babies."
The study does not provide any immediate solution for stopping preterm birth. But the discoveries may lead to new ways to prevent this disorder.
A final note: the researchers only tested women of European ancestry. They compared their findings to information from three different studies in Finland, Denmark and Norway. The studies pointed to the same six genes. The next step is to expand the research to include women from other races and ethnic groups.
I'm Anne Ball.

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词汇解析

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1.Preterm birth 早产

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Preterm birth, Caesarean section and intrapartum complications were associated with neonatal death.
早产、剖腹产和产时并发症与新生儿死亡相关O;)jn5Mzf~[jW9R!#bT

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2.medical treatment 药物治疗

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Several police officers received medical treatment for cuts and bruises.
几名警官因割伤和擦伤而接受了医治BDLf]7z(&qSP.)

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3.the leading cause 主要原因

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Homicide is the leading cause of death among black men.
谋杀是黑人死亡的主要原因Dl8pyPDLNz5W7^3P

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4.pay for 为...付出代价;支付

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I have had to pay for repairs to the house.
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内容解析

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1.This study showed that the genes thought to be responsible for the timing of the birth were from the mother.

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be responsible for 对...负责

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I sometimes find it a strain to be responsible for the mortgage.
我有时觉得背负这笔抵押贷款很有压力~1qahRf#lO
The storm is thought to be responsible for as many as four deaths.
据认为,暴风雨造成4人死亡0Ym.RhtRwgN

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2.For the first time, researchers have identified six genes that control the length of a pregnancy.

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For the first time 第一次

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For the first time in my career, I was failing.
我职业生涯中第一次经历失败9E(mN4CuzRzm4#,Wz
He looked at me without speaking, and for the first time I could see the pride that filled him.
他看着我没有说话,我第一次看出他内心充满了自豪D&=p]qp~|N(MhmK12

参考译文

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新发现基因或有助于孕妇足月生产
研究人员首次发现了影响孕期的6种基因gg&79JW|)rvhC%[H6H。他们称这些基因可能会显示婴儿是否早产wbCbU8;+y,0
早产是指婴儿不足月出生,这会导致先天性残疾甚至早亡bCxQP(H|p4#f.sFhshw9
全球每年有1500百万婴儿早产FA@LyP7p+uqYLHM7V~@。他们的肺很小,没有发育完全Z^YhZ-r(-Lck7;np=。他们很难正常呼吸57jBkty5Cz+Pv&,。因此很多早产儿死亡y;VrU6GxE,@ELtHol。而幸存下来的婴儿,早产导致的问题也会影响他们终生6jBeVa4L0Ry+GtTkAe
早产成为全球5岁以下儿童死亡的主要原因r5(Ax(OaK*f0
妊娠期通常为40周%Wa@_Kbo0EcE_。若婴儿在子宫内的生长周期达37周后出生即为足月生产-|K3yCzMr@!6_g。一项研究表明,少数妊娠期只有22周的婴儿借助药物治疗才能存活下来c8Ke64en*Np7,

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新基因或有助于孕妇足月生产.jpg
即使是身长和体重与足月婴儿无异的晚期早产儿也有可能死亡或面临诸多问题JD0U])RoSm[Hm。妊娠期只有34到36周的早产儿更容易死亡@C|g~TobNC~]7
目前,研究人员可能已经发现这种复杂疾病的成因hz0iCsvA!D+xH
他们观察了5万名孕妇的基因结构Uy+L%(_Bky。这是迄今为止DNA(脱氧核糖核酸)采集规模最大的一次的研究|^isJ4fI(3U。研究发现,有6个基因似乎控制着婴儿在母亲子宫中停留的期限w!Zh%+&6+O
路易·穆格利亚(Louis Muglia)是俄亥俄州辛辛那提市儿童医院医学中心周产期研究所的主任V)uSI]H)YcrRb(。他组织了这项研究并对此作出解释dUt34woFfXH
“第一次有了线索来帮我们更理性地了解孕妇早产的风险eW--5F&(.~7bPEK=P!g。”
穆格利亚表示,科学家很早就了解到早产是基因和环境共同影响的结果h1fJghHDs~M6Mm*J
新发现的基因涉及到人体如何利用矿物质硒8t@F(too^nNKlZ1sX_。土壤、海鲜和肉类中富含硒JBqi)Qk0X.h5。一些商店也出售含硒的食物,不过不包括怀孕期间孕妇服用的维生素补充剂dR*vH*)I1U
硒补充剂的价格便宜x4B&M,q&6IT-AO。如果这项研究的结果得到证实,这将挽救数百万人的生命S%EuSzoc]r
叶酸等补充剂可很大程度上降低出生缺陷的概率Cu4jBOO;4c3^ImgnyBZ^。叶酸是一种B族维生素,这一元素被很多国家添加到食物中以预防疾病KK&AoM2Q-NG_,HPGQ
另一个发现是,女性子宫内的细胞对妊娠期的影响远超过预期m2RZh,P,_0pH
这项研究表明,影响分娩时间的基因其实来自于母亲v%mBrC9Wa9|lP
“我们第一次知道孕妇体内的某种组织会导致早产Xd96ROUY[.nc-40。”
美国畸形儿童基金会为这项研究提供了资金支持I7AIWiYvMW-YWE]H。斯戴西·斯图尔特(Stacey Stewart)是该非营利组织的成员#XP850xM-zhbYM
他说“我们认为这是寻找避免早产办法的重大突破,早产是5岁以下儿童死亡的主要原因,也是导致婴儿残疾的主要原因L;F7iv8+ZhRp。”
虽然研究没有提出避免早产的快速解决方案-Z9Apdf74ct7WPugx。但这些发现可为避免这些疾病打开突破口SCZH(TOSLotczpY
最后一点:研究人员只测试了欧洲血统的女性5OBE#~CA=I_wsk+x,69V。他们将研究结果与芬兰、丹麦和挪威的三种不同研究进行了比较A,CG=dL]xBi(%(6。这些研究都指出了同样的六种基因@Nxcl1I,|G|,lOG(B。接下来他们将扩大研究范围,包括其他种族和民族的女性pMELwQA4^O-5G0raiPGw
安妮·波尔为您播报oF)ra,@Z!dE

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译文为可可英语翻译,未经授权请勿转载!

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