科技使身体“停留在50岁水平”-凯发k8官网

科技使身体“停留在50岁水平”
文章来源:未知 文章作者:meng 发布时间:2009-10-20 03:30 字体: [ ] 
(单词翻译:双击或拖选)

centenarians with the bodies of 50-year-olds will one day be a realistic possibility, say scientists.

科学家称,百岁老人拥有50岁的身体在将来某天可能成为现实。

1 body parts could last much longer in the future" width="226" border="0" src="/upimg/091020/4_033156_1.jpg" />
replacement body parts could last much longer in the future

half of babies now born in the uk will reach 100, thanks to higher living standards, but our bodies are wearing out at the same rate.

to achieve "50 active years after 50", experts at leeds university are spending £50m over five years looking at 2 solutions.

they plan to provide 3 with own-grown tissues and 4 implants(深植,灌输).

new 6, knees and heart valves are the starting points, but eventually they 7(面对,正视) most of the body parts that flounder(挣扎,折腾) with age could be upgraded.

new lease of life

the university's institute of medical and biological engineering has already made a 5 transplant that should last for life, rather than the 20 years maximum expected from current artificial hips.

the combination of a durable cobalt(钴)-chrome(铬) metal 8(合金) 9 and a 10(陶器的) ball or "head" means the 11 should easily withstand the 100 million steps that a 50-year-old can be expected to take by their 100th birthday, says 12 professor john fisher.

meanwhile, colleague professor eileen ingham and her team have developed a unique way to allow the body to enhance itself.

the concept is to make transplantable tissues, and eventually organs, that the body can make its own, getting round the problem of 13.

so far they have managed to make 14 functioning heart valves using the technique.

it involves taking a healthy 15 heart valve - from a human or a suitable animal, such as a pig - and gently stripping away its cells using a 16 of 17(酵素) and detergents(清洗剂,洗涤剂).

the 18 scaffold(脚手架) left can be transplanted into the patient without any fear of rejection - the main reason why normal transplants wear out and fail.

proof of concept

once transplanted, the body takes over and repopulates the scaffold with cells.

trials in animals and on 40 patients in brazil have shown 19 results, says prof ingham.

they have 20 the technology to the nhs national blood and transplant tissue services so it can be used on any uk donated human tissue in the future.

the nhs is already looking into using the method on donor skin for burns patients.

professor christina doyle of xeno medical, the medical device company that is developing the technologies, said the holy grail was to remove the heavy reliance on donor organs.

"that's where the technology will lead us eventually."

but she said: "to replace all donor tissue using this technology will take 30 to 50 years. each single product will need to be designed and tested individually."

prof doyle said experts elsewhere were also working on similar regenerative therapies, but grown 21 outside of the body, to ensure that people can continue being as active during their second half-century as they were in their first.



点击收听单词发音收听单词发音  

1 uvxxm     
n.取代,替换,交换;替代品,代用品
参考例句:
  • we are hard put to find a replacement for our assistant.我们很难找到一个人来代替我们的助手。
  • they put all the students through the replacement examination.他们让所有的学生参加分班考试。
2 d6vxq     
adj.革新的,新颖的,富有革新精神的
参考例句:
  • discover an innovative way of marketing.发现一个创新的营销方式。
  • he was one of the most creative and innovative engineers of his generation.他是他那代人当中最富创造性与革新精神的工程师之一。
3 688c361eca60974e5ceff4190b75ee1c     
n.领取退休、养老金或抚恤金的人( pensioner的名词复数 )
参考例句:
  • he intends to redistribute income from the middle class to poorer paid employees and pensioners. 他意图把中产阶级到低薪雇员和退休人员的收入做重新分配。 来自《简明英汉词典》
  • i am myself one of the pensioners upon the fund left by our noble benefactor. 我自己就是一个我们的高贵的施主遗留基金的养老金领取者。 来自辞典例句
4 frox4     
adj.持久的,耐久的
参考例句:
  • this raincoat is made of very durable material.这件雨衣是用非常耐用的料子做的。
  • they frequently require more major durable purchases.他们经常需要购买耐用消费品。
5 1doxx     
n.臀部,髋;屋脊
参考例句:
  • the thigh bone is connected to the hip bone.股骨连着髋骨。
  • the new coats blouse gracefully above the hip line.新外套在臀围线上优美地打着褶皱。
6 f8c80f9a170ee6ab52ed1e87054f32d4     
abbr.high impact polystyrene 高冲击强度聚苯乙烯,耐冲性聚苯乙烯n.臀部( hip的名词复数 );[建筑学]屋脊;臀围(尺寸);臀部…的
参考例句:
  • she stood with her hands on her hips. 她双手叉腰站着。
  • they wiggled their hips to the sound of pop music. 他们随着流行音乐的声音摇晃着臀部。 来自《简明英汉词典》
7 ajczv     
v.想象,设想,展望,正视
参考例句:
  • nobody can envisage the consequences of total nuclear war.没有人能够想像全面核战争的后果。
  • when do you envisage being able to pay me back?你看你什么时候能还我钱?
8 flryq     
n.合金,(金属的)成色
参考例句:
  • the company produces titanium alloy.该公司生产钛合金。
  • bronze is an alloy of copper and tin.青铜是铜和锡的合金。
9 jw9wm     
n.窝,穴,孔,插座,插口
参考例句:
  • he put the electric plug into the socket.他把电插头插入插座。
  • the battery charger plugs into any mains socket.这个电池充电器可以插入任何类型的电源插座。
10 lusyc     
n.制陶业,陶器,陶瓷工艺
参考例句:
  • the order for ceramic tiles has been booked in.瓷砖的订单已登记下来了。
  • some ceramic works of art are shown in this exhibition.这次展览会上展出了一些陶瓷艺术品。
11 m3lx4     
adj.联合的,共同的;n.关节,接合处;v.连接,贴合
参考例句:
  • i had a bad fall,which put my shoulder out of joint.我重重地摔了一跤,肩膀脫臼了。
  • we wrote a letter in joint names.我们联名写了封信。
12 zrqzo     
n.研究者,调查者,审查者
参考例句:
  • he was a special investigator for the fbi.他是联邦调查局的特别调查员。
  • the investigator was able to deduce the crime and find the criminal.调查者能够推出犯罪过程并锁定罪犯。
13 fvpxp     
n.拒绝,被拒,抛弃,被弃
参考例句:
  • he decided not to approach her for fear of rejection.他因怕遭拒绝决定不再去找她。
  • the rejection plunged her into the dark depths of despair.遭到拒绝使她陷入了绝望的深渊。
14 gfuzd     
adv.完全地,全部地,彻底地;充分地
参考例句:
  • the doctor asked me to breathe in,then to breathe out fully.医生让我先吸气,然后全部呼出。
  • they soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。
15 dstxi     
n.捐献者;赠送人;(组织、器官等的)供体
参考例句:
  • in these cases,the recipient usually takes care of the donor afterwards.在这类情况下,接受捐献者以后通常会照顾捐赠者。
  • the doctor transplanted the donor's heart to mike's chest cavity.医生将捐赠者的心脏移植进麦克的胸腔。
16 jw8znt     
n.鸡尾酒;餐前开胃小吃;混合物
参考例句:
  • we invited some foreign friends for a cocktail party.我们邀请了一些外国朋友参加鸡尾酒会。
  • at a cocktail party in hollywood,i was introduced to charlie chaplin.在好莱坞的一次鸡尾酒会上,人家把我介绍给查理·卓别林。
17 7881ad8ce9c83424f7874e70266ed2d8     
n. 酶,酵素
参考例句:
  • it was said that washing powders containing enzymes remove stains more efficiently. 据说加酶洗衣粉除污更有效。
  • among the enzymes which are particularly effective are pepsin, papain. 在酶当中特别有效的是胃朊酶、木瓜酶。
18 jbxzh     
adj.无活动能力的,惰性的;迟钝的
参考例句:
  • inert gas studies are providing valuable information about other planets,too.对惰性气体的研究,也提供了有关其它行星的有价值的资料。
  • elemental nitrogen is a very unreactive and inert material.元素氮是一个十分不活跃的惰性物质。
19 bkqzsk     
adj.有希望的,有前途的
参考例句:
  • the results of the experiments are very promising.实验的结果充满了希望。
  • we're trying to bring along one or two promising young swimmers.我们正设法培养出一两名有前途的年轻游泳选手。
20 ipmzni     
adj.得到许可的v.许可,颁发执照(license的过去式和过去分词)
参考例句:
  • the new drug has not yet been licensed in the us. 这种新药尚未在美国获得许可。
  • is that gun licensed? 那支枪有持枪执照吗?
21 entirely     
ad.全部地,完整地;完全地,彻底地
参考例句:
  • the fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • his life was entirely given up to the educational work. 他的一生统统献给了教育工作。
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