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
考研
Feeling anxious? Your mood may actually change how your dinner tastes, making the bitter and salty flavors recede, according to
Feeling anxious? Your mood may actually change how your dinner tastes, making the bitter and salty flavors recede, according to
admin
2011-03-11
93
问题
Feeling anxious? Your mood may actually change how your dinner tastes, making the bitter and salty flavors recede, according to new research. This link between the chemical balance in your brain and your sense of taste could one day help doctors to treat depression. There are currently no on-the-spot tests for deciding which medication will work best in individual patients with this condition. Researchers hope that a test based on flavor detection could help doctors to get more prescriptions right first time.
It has long been known that people who are depressed have lower-than-usual levels of the brain chemicals serotonin or noradrenaline, or in some cases both. Many also have a blunted sense of taste, which is presumably caused by changes in brain chemistry. To unpick the relationship between the two, Lucy Donaldson and her colleagues at the University of Bristol, UK, gave 20 healthy volunteers two antidepressant drugs, and checked their sensitivity to different tastes. The drug that raised serotonin levels made people more sensitive to sweet and bitter tastes, the team reports in the Journal of Neuroscience. The other, which increased noradrenaline, enhanced recognition of bitter and sour tastes.
In healthy people, volunteers whose anxiety levels were naturally higher were less sensitive to bitter and salty tastes. "What hasn’t been done be{ore is to look precisely at which tastes are affected in depression," says Donaldson. Now the results are in, "we can discriminate between the chemicals and the tastes that seem to be altered," she says. Testing sensitivity to sweet and sour tastes could potentially help doctors to pick up on which chemicals are dipping, guiding them when choosing which drug to rectify the problem.
Currently, doctors rely on physical and emotional symptoms to make a best guess at an individual’s imbalance, prescribe a drug and wait about a month to check on any improvement. Good doctors have about a 60-80% success rate in selecting the right drug the first time, says psychiatrist Jan Melichar, a co-author on the paper. Are there any decent tests for prescribing drugs for depression? "No. We do a best guesstimate," says Melichar. "I’m excited by this finding because in 3, 5 or 7 years we could have a simple taste test. "
Next, the team plans to perform similar tests in depressed people, and in healthy volunteers given another brain chemical called tryptophan. This chemical would lower the healthy subjects’ levels of serotonin, as actually happens in depressed patients.
The work has also generated interest from flavor houses--companies that develop chemicals for the food and drink industry--who are interested in making foods taste just as sweet with half the amount of sugar. "Theoretically there would be the possibility of enhancing your meal with drugs that affect brain chemicals so that things would taste better--you couid have a ’designer taste tablet’," Donaldson says.
The flavour houses are interested in the research because it helps______.
选项
A、make the food we eat taste more delicious
B、enhance our meal by drugs which can affect brain chemicals
C、boost the development of chemical production
D、produce a chemical which reduces the amount of industry material
答案
D
解析
文章最后一段提到了flavor houses的兴趣——用一半数量的糖使食物尝起来很甜。由这一例子我们推断这项研究有助于发明一种化学制品以减少工业原材料的使用,故[D]正确。最后一段第二句提到“从理论上来说,通过能够影响大脑化学元素的药物来增加食欲是可能的”这只是一种理论,并没有实践,故排除[B]。[A]和[C]文中皆未提到,故排除。
转载请注明原文地址:https://kaotiyun.com/show/T2p4777K
0
考研英语一
相关试题推荐
WhichofthefollowingstatementsisNOTtrueaccordingtothefirsttwoparagraphsofthepassage?Thekiteislimitedbythe
Humanshavealteredtheworld’sclimateby(1)_____heat-trappinggasessincealmostthebeginningofcivilizationandevenprev
Accordingtothestatistics,amongthehomelessinNewYorktherewere______.InAmerica,howmanypeoplearehomelessparents
Bywhatmeansdothechildrenoftheauthor’sfamilygotoschool?Intheauthor’sopinion,______.
There(1)_____notonetypeofreadingbutseveralaccordingtoyourreasonsforreading.Toreadefficiently,youhaveto(2)__
WhichofthefollowingisnotmentionedinrelationtoIQ?______Binetusedalargenumberofchildreninhistestsbecausehe
Astothepunishmentthatchildrenundersevenareassignedtowrongdoing,PiagetsuggestsPiagetandKeaseywouldnothaveagr
Thefirsttwostagesinthedevelopmentofcivilizedmanwereprobablytheinventionofprimitiveweaponsandthediscoveryoff
Almostexactlyayearago,inasmallvillageinNorthernIndia,AndreaMillinerwasbittenonthelegbyadog."Itmusthave(
Itcanbeseenfromthepassagethat______.Accordingtothepassagethenumberofcohabitingcouplesislikelyto______.
随机试题
以下不是健康教育计划实施过程中质量控制方法的是
A.可动黏膜B.移行黏膜C.固定黏膜D.咀嚼黏膜E.口内黏膜移行皱襞黏膜属于
A.国务院药品监督管理部门B.省级药品监督管理部门C.市级药品监督管理部门D.药品监督管理部门设置的派出机构《医疗机构制剂许可证》由何部门发给()
A.瞳孔缩小B.瞳孔扩大C.黄疸D.血红蛋白尿E.樱桃红吗啡中毒()
(2010年)图5—72所示三根压杆均为细长(大柔度)压杆,且弯曲刚度均为EI。三根压杆的临界载荷Fcr的关系为()。
我国现行建筑安装工程价款按月结算的结算对象是( )。
按照“三同时”制度的规定,落实防治环境污染和生态破坏的措施及经费概算的工作,应当在( )完成。
预提所得税应由扣缴义务人于每次扣缴税款后( )内缴入国库,并向当地税务机关报送扣缴所得税报告。
东亚航空公司是位于北京的一家大型民营航空公司,2019年2月发生下列经营业务:(1)国内航线取得不含税客运收入4700万元,国际航线取得客运收入2400万元。(2)将一架配备有机组人员的小型客机租赁给某公司使用三个月,每月月末收取租金100万元(不含税
Longtimeago,everyoneknewthatregularbedtimeswereimportant."Dreamon!"mostmodernparentsmightreply.Butresearchby
最新回复
(
0
)