首页
登录
职称英语
Scientists have cured color blindness in monkeys using gene therapy. As
Scientists have cured color blindness in monkeys using gene therapy. As
游客
2023-10-12
73
管理
问题
Scientists have cured color blindness in monkeys using gene therapy.
As well as allowing color-blind humans to tell red from green, the innovative technique could restore sight to the blind.
Sufferers of age-related macular degeneration—the most common cause of blindness in the elderly—are among the millions who could eventually benefit.
Researcher Jay Neitz said: " If we could find a way to do this with complete safety in human eyes, as we did with monkeys, there would be a lot of people who would want it. We hope the technology will be useful in correcting a lot of different vision disorders.
Professor Neitz used gene therapy—injections of genes—to allow two male squirrel monkeys called Sam and Dalton to see in full color for the first time.
Like some humans with red-green colour blindness, the monkeys lacked a pigment that the cones—the colour—detector cells at the back of the eye—need to see red and green. As a result, they saw both red and green as shades of grey. Other colours, such as orange, blue and brown appeared washed-out.
To correct their vision, the US scientists injected the monkey’s eyes with millions of copies of a gene needed to make the missing pigment, the journal Nature reports.
Importantly, the monkeys were injected with a human gene, suggesting the same technique would work on people. Four months later, their vision suddenly improved.
Professor Neitz, of the University of Washington in Seattle, said; "it was as if they woke up and saw these new colours. They unquestionably responded to colours that had been invisible to them. "A version of the colour blindness test that is used in schools around the world showed just how much their vision has improved.
Dr Katherine Mancuso, the study’s lead author, said: "Their performance on red and green was similar, but not quite as good, us a female monkey who had normal colour vision since birth.
The need to prove that adding genes to the body does not cause harmful side-effects means it will be some time before the method is routinely used to correct colour blindness in humans. Despite this, the researchers are optimistic and point out that gene therapy is already being tested on Britons and Americans with a rare, hereditary form of blindness called Leber’s congenital amaurosis.
The technique could also be adapted to treat other conditions that involve problems with genes in the colour and detail-detecting cone cells at the back of the eye. These include age-related macular degeneration, in which the deterioration of central vision makes it increasingly difficult to carry out everyday tasks such as reading and driving. Blindness linked to diabetes might also be treated.
Cathy Yelf, of the Macular Disease Society, said the research was "very interesting" but cautioned; "A practical gene therapy for macular degeneration is still some way off. [br] What technique is used to cure colour blindness in monkeys?
选项
答案
Gene therapy.
解析
(本文主要讲的就是利用基因疗法治疗猴子的色盲,并在开篇第一段有所提及。)
转载请注明原文地址:https://tihaiku.com/zcyy/3092225.html
相关试题推荐
Veryfewscientists______completelynewanswerstotheworld’sproblems.A、comeu
Scientistshavecuredcolorblindnessinmonkeysusinggenetherapy.As
Scientistshavecuredcolorblindnessinmonkeysusinggenetherapy.As
Scientistshaveidentifiedthelikelyculpritinadiseasethathasdevastat
Scientistshaveidentifiedthelikelyculpritinadiseasethathasdevastat
Scientistshaveidentifiedthelikelyculpritinadiseasethathasdevastat
Ateamofscientistshasjustfinishedwhatmightliterallybedescribedas
Ateamofscientistshasjustfinishedwhatmightliterallybedescribedas
Ateamofscientistshasjustfinishedwhatmightliterallybedescribedas
"Throwitaway?Thereisnoway,"scientistswarnusso.Whatthatmeans,of
随机试题
_____inthepast,atthemomentitisafavoritechoiceforweddinggown.A、Unpop
HowtoLovetheWorldAsItIs?[A]Itstruckmerecen
[originaltext]W:[19]I’msorry,butIcan’tletyoucheckoutthesebooks.M:W
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
Biologically,thereisonlyonequalitywhichdistinguishesusfromanimals:
药物作用的选择性应是()。A.药物集中在某靶器官多都易产生选择作用 B.
简述教学导入的基本原则。
影响教师公正观念的因素有A.一定社会历史条件和社会教育制度.职业劳动的目的的
当某一感官处于功能状态时,另一感官出现幻觉,此现象是A.功能性幻觉 B.内脏性
当调研者对研究对象缺乏了解时,为了界定调研问题的性质以及更好地了解问题的环境,一
最新回复
(
0
)