首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Alzheimer’s disease has no cure. There are, however, five drugs—known and approved—that can slow down the development of its sym
Alzheimer’s disease has no cure. There are, however, five drugs—known and approved—that can slow down the development of its sym
admin
2013-09-23
27
问题
Alzheimer’s disease has no cure. There are, however, five drugs—known and approved—that can slow down the development of its symptoms. The earlier such drugs are administered, the better. Unfortunately, the disease is usually first noticed when people complain to their doctors of memory problems. That is normally too late for the drugs to do much good. A simple and reliable test for Alzheimer’s that can be administered to everybody over the age of about 65 , before memory-loss sets in, would therefore be useful.
Theo Luider, of the Erasmus University Medical Centre in Rotterdam, and his colleagues think they have found one—but it works only in women. They made their discovery, just reported in the Journal of Proteome Research, by tapping into a long-term, continuing study that started in 1995 with 1, 077 non-demented and otherwise healthy people aged between 60 and 90. At the beginning of the project, and subsequently during the periods 1997-99 and 2002-04, participants were brought in for a battery of neurological(神经学的)and cognitive investigations, physical examinations, brain imaging and blood tests.
During the first ten years of the study, 43 of the volunteers developed Alzheimer’s disease. When Dr. Luider compared blood samples from these people with samples from 43 of their fellow volunteers, matched for sex and age, who had remained Alzheimer’s-free, he found something startling. Levels of a substance called pregnancy zone protein had been unusually high, even before their symptoms appeared, in some of those who went on to develop Alzheimer’s disease.
Those "some" , it turned out, were all women. On average, levels of pregnancy zone protein in those women who went on to develop Alzheimer’s were almost 60% higher than those of women who did not. In men, levels of the protein were the same for both.
The reason for this curious result seems to be that the brain plaques(斑块)associated with Alzheimer’s disease are themselves turning out pregnancy zone protein. Certainly, when Dr. Luider applied a chemical stain specific to that protein to the plaques of dead Alzheimer’s patients he found the protein present in them.
Confusingly, though, it was there in the plaques of both sexes. Presumably, female cells(and therefore the plaques of female brains)make more of it than male cells do. But that remains to be proved. Whatever the reason, however, this result means that women, at least, may soon be able to tell whether and when they are at risk of Alzheimer’s—and thus do something about it before they start losing their minds.
How does the author feel about Dr. Luider’s study?
选项
A、Confused.
B、Optimistic.
C、Indifferent.
D、Meaningless.
答案
B
解析
态度题。根据本文最后一句“但不管是什么原因,这一发现至少意味着女性可以尽早得知其是否会患有阿尔茨海默病,以及什么时候可能患上阿尔茨海默病——因此,医生可以在她们记忆力减退前采取一些措施”可知,作者对这项研究持乐观的态度,故正确答案为[B]“乐观的”。
转载请注明原文地址:https://kaotiyun.com/show/4JLK777K
0
专业英语四级
相关试题推荐
Jefflikessports.Heis______ofanathlete.
Educatorstodayismoreandmoreoftenhardtosaythatcomputerliteracyisabsolutelynecessaryforcollegestudents.Manyeve
Whatarethepossiblerelationshipbetweenthemanandthewoman?
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostA
EcologicalProblemsInrecentyears,/ecologyhasbecomeasourceofgreatinteresttomanypeople/wholiveintheUnitedSt
ToplotShakespeare’slifeistobecomeinvolvedinakindofdetectivestory______thereareplentyofcluesbutverylittleel
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
______,itisquiteeasytodrillaholeinitwithlaser.
There’ssomethingabouttheInternetthatcanbringoutmeannessinteenagers.Thatisonefindingofastudytobereleased
Todriveacarsafely,itis______goodbrakes.
随机试题
肺痈溃脓期的主症包括
下列说法错误的是()。
试述贷款人的权利。
某Word文档具有只读属性,用Word2003打开它后进行了一些编辑,此时用鼠标单击“文件”菜单中的“保存”命令,则_______。
具有解表功效的药物是具有利水功效的药物是
A.不能纳入药品目录B.列不予支付药品范围C.列准予支付药品范围D.可以纳入甲类药品目录E.可以纳入乙类药品目录
组织活动原理不包括()。
股份有限公司为了减少公司股本而注销股份时,其购回股票支付的价款超过面值总额的部分应冲减相关的所有者权益项目,其冲击按顺序依次为()。
目前,我国财政支农政策已经演变到第五阶段,进入()阶段。
【2015年真题】新课程倡导学生评价主体的多元化,但在农村义务教育学校中,教师应当成为评价学生的唯一主体。()
最新回复
(
0
)