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
More About Alzheimer’s Disease Scientists have developed skin tests that may be used in the future to identify people with Al
More About Alzheimer’s Disease Scientists have developed skin tests that may be used in the future to identify people with Al
admin
2009-06-15
56
问题
More About Alzheimer’s Disease
Scientists have developed skin tests that may be used in the future to identify people with Alzheimer’s disease and may ultimately allow physicians to predict who is at risk of getting this neurological disorder.
The only current means of diagnosing the disease in a living patient is a long and expensive series of tests that eliminate every other cause of dementia.
"Since Alois Alzheimer described the disease nearly a century ago, people have been trying to find a way to accurately diagnose it in its early stages," said Patricia Grady, acting director of the National Institute of Neurological Disorders and Stroke in Bethesda, Maryland. "This discovery, if confirmed, could prove a big step forward in our efforts to deal with and understand the disease."
Alzheimer’s is the single greatest cause of mental deterioration in older people, affecting between 2.5 million and 4 million people in the United States alone. The devastating disorder gradually destroys memory and the ability to function, and eventually causes death. There is currently no known treatment for the disease.
Researches discovered that the skin cells of Alzheimer’s patients have defects that interfere with their ability to regulate the flow of potassium in and out of the cells. The fact that the cell defects are present in the skin suggests that Alzheimer’s results from physiological changes throughout the body, and that dementia may be the first noticeable effect of these changes as the defects affect the cells in the brain, scientists said.
The flow of potassium is especially critical in cells responsible for memory formation. The scientists also found two other defects that affect the cells’ supply of calcium, another critical element.
One test developed by researchers calls for growing skin cells in a laboratory culture and then testing them with an electrical detector to determine if the microscopic tunnels that govern the flow of potassium are open. Open potassium channels create a unique electrical signature.
A spokesman for the Alzheimer’s association said that if the validity of the diagnostic test can be proven it would be important development, but cautioned that other promising tests for Alzheimer’s have been disappointing.
选项
A、cure those with Alzheimer’s disease
B、discover the cause of Alzheimer’s disease
C、predict who might get Alzheimer’s disease
D、find the consequences of Alzheimer’s disease
答案
C
解析
该题利用“皮肤测试”作为答案线索词,在第一段中找到答案相关句,其实该问题是考察短语“at the risk of”的含义。
转载请注明原文地址:https://kaotiyun.com/show/v0md777K
本试题收录于:
职称英语卫生类A级题库职称英语分类
0
职称英语卫生类A级
职称英语
相关试题推荐
Lookatthequestionsforthispart.Youwillhearapassageabout"ALittleHouseintheBigWoods".Youwilllistentoit
Lookatthequestionsforthispart.Youwillhearapassageabout"ALittleHouseintheBigWoods".Youwilllistentoit
Lookatthequestionsforthispart.Youwillhearapassageabout"InsideStory".Youwilllistentoittwice.Forque
Youwillhearfivepeoplegivingreasonswhychildrenlearntheirmothertonguesowell.Beforeyoulisten,readthelistof
TheDailyNewsisofferingfreeflightstoanumberofEuropeancities.TheseticketsallowpassengerstoflydirectlyfromHea
DearDavid,I’mgoingtovisityourcountrynestmonth.I’mgoingtotravel【B1】______twofriends.Wedon’tknow【B2】____
Batsareextremelyshycreaturesandavoidhumansifatallpossible.
AHeroicWomanThewholeoftheUnitedStatescheereditslatesthero,AshleySmith,withtheFederalBureauofInvestigati
ThispoemdepictsthebeautifulsceneryofatownintheSouth.
The20patientshadstemcellinjectionsinsteadofsurgery.Theejectionfractionrateofthepatientswithstemcellinjectio
随机试题
Everycountryhasitsheroes.Theymaybesoldiersorsportspeople,doctorsorfilmstars.Weadmirethemfortheircourage,th
盐酸氯丙嗪的溶液澄清度检查主要是控制
在NH3.H2O中加入一些NH4Cl晶体,则下列说法正确的为()。
已知a,b是不相等的正数,求证:a4+b4>2a3b+2ab3—2a2b2.
某年10月份有四个星期四,五个星期三,这年的10月8日是星期()。
正强化又称“阳性强化”,是指个体做出某种行为或反应,随后或同时得到某种奖励,从而使行为或反应的强度、概率或速度提高的过程。也可以说,正强化是通过增加一个喜欢的刺激以提高事件发生的概率。根据上述定义,下列运用了正强化的是:
股指期货属于资本市场。()
当一名司机被怀疑饮用了过多的酒精时,与检验该司机血液中的酒精含量水平相比,检验该司机走直线的能力是检验该司机是否适于驾车的更可靠的指标。以下哪项如果正确,最能构成对上述论证的支持?
实践作为检验真理的标准,既是确定的又是不确定的。其不确定性是因为
AntoniaCastanedahasutilizedscholarshipfromwomen’sstudiesandMexican-Americanhistorytoexaminenineteenth-centuryliter
最新回复
(
0
)