2019-07-21
让老年痴呆症诊断像验血一样简单
思考
Thinking
1.阿兹海默症的两大特征?
2.你对阿兹海默症病人感触最深的一件事?
New Markers For Alzheimer's Disease Could Aid Diagnosis And Speed Up Drug Development
阿兹海默症新标记物的发现或帮助病情诊断和药物研发
Alzheimer's disease begins altering the brain long before it affects memory and thinking.
阿尔茨海默病在影响记忆和思维很久之前,就开始改变大脑。
So scientists are developing a range of tests to detect these changes in the brain, which include an increase in toxic proteins, inflammation and damage to the connections between brain cells.
因此,科学家们正在开发一系列测试来检测大脑中的这些变化,包括毒蛋白的增炎症和脑细胞间连接的损伤。
The tests rely on biomarkers, shorthand for biological markers, that signal steps along the progression of disease.
这些测试依靠标记着疾病进展的生物标记物。
These new tests are already making Alzheimer's diagnosis more accurate, and helping pharmaceutical companies test new drugs.
这些新测试让阿尔茨海默氏症的诊断更加准确,并帮助制药公司测试新药。
The first Alzheimer's biomarker test was approved by the Food and Drug Administration in 2012.
2012年,美国食品和药物管理局批准了首个阿尔茨海默氏症生物物测试。
It's a dye called Amyvid that reveals clumps of a protein called amyloid. These amyloid plaques are a hallmark of Alzheimer's.
这是一种叫做Amyvid的染料,它能显示一种叫做amyloid的蛋白斑块。这些淀粉样斑块是阿尔茨海默氏症的标志。
The test costs thousands of dollars, though, in part because it requires a PET scan of the brain. Also, Amyvid reveals only amyloid plaques, which are just one of the brain changes associated with Alzheimer's.
这项测试花费了数千美元,不过部分原因是它需要对大脑进行正电层扫描。此外,Amyvid只显示淀粉样斑块,这只是与阿尔茨海默病相关的大脑变化之一。
So the Alzheimer's Drug Discovery Foundation has launched an effort to speed up development of biomarkers that are cheaper and detect a wider range of brain changes.
因此,阿尔茨海默氏症药物发现基金会已经开始加快开发更便宜的生物标志物,并检测更大范围的大脑变化。
One promising test detects the protein tau, which causes toxic tangles to form inside brain cells.
一项有望成功的测试检测到tau蛋白,它会导致脑细胞内形结。
"The tangles represent the dying neurons," Fillit says, which means a biomarker for tau could make diagnosing Alzheimer's even more accurate.
“缠结代表死亡的神经元,”菲力特说,这意味着tau的生物标记让阿尔茨海默病的诊断更加准确。
And eventually, scientists hope to use biomarkers in spinal fluid and blood to assess levels of both amyloid and tau in the brain. Those tests promise to be easier for patients, and less expensive to administer.
最后,科学家希望利用脊髓液和血液中的生物标志物来评估大脑样蛋白和tau的含量。这些测试有望让患者更容易接操作费用也更低。
第一次执行,有很多地方不成熟,本来想着是要把我自己不懂的单词标注出来的但时间不够了,我还是高估了我自己。