首页
登录
职称英语
Alzheimer’s disease has no cure. There are, however, five drugs—known and ap
Alzheimer’s disease has no cure. There are, however, five drugs—known and ap
游客
2023-11-03
65
管理
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. [br] 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。根据本文最后一句可知,但不管是什么原因,这个发现至少意味着女性可以尽早得知其是否会患上阿尔茨海默病,以及什么时候可能会患上该病——因此,医生可以在她们记忆力衰退前采取一些措施。可见,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:http://tihaiku.com/zcyy/3155375.html
相关试题推荐
Whatcausedthedisease?[br][originaltext]TheWorldHealthOrganization
Whatcausedthedisease?[originaltext]TheWorldHealthOrganizationsaysI
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
Sugarlessyoghurtcouldhelpbeatbadbreath,toothdecayandgumdisease,s
随机试题
[originaltext]WhereverChinesego,thecustomofdrinkingteafollows.Teawas
Whatisthemainpurposeofthelecture?[br]Whydoestheprofessordiscussthe
Educationofexceptionalchildrenmeansprovisionofspecialeducationalser
Whichofthefollowingitalicizedpartsisapredicativeclause(表语从句)?A、Aprosp
Socialchangeismorelikelytooccurinsocietieswherethereisa【B1】_____
患儿,7岁。反复浮肿6个月,大量蛋白尿,低白蛋白血症,血清胆固醇>5.7mmol
A.肝郁化热证B.肝郁血虚证C.肝火犯肺证D.肝郁脾虚证E.肝火犯胃证左金丸的主
简述现代企业人力资源管理各个历史发展阶段的特点。
阅读材料回答下列问题:一般资料:求助者,男性,24岁,国外在读研究生。案例介绍:
(2016年真题)根据《水利安全生产标准化评审管理暂行办法》,水利生产经营单位包
最新回复
(
0
)