阿尔兹海默症 z-bo 2020-10-19 357

　　For a long time, brain diseases like Alzheimer's disease have been an insurmountable problem in the medical profession. People's understanding of these diseases is not as good as cancer and other diseases. In the past, Alzheimer's disease was equivalent to the symptoms of amyloid in the brain of patients, but a recent study published in "Natural Neuroscience" showed that there may be a type of beta-amyloid in the brain. display. The interruption of the compensation mechanism also delays the appearance of Alzheimer's disease symptoms in some patients with β-amyloid in the brain.

　　Researchers at the University of California, Berkeley used fMRI technology to study 22 young people, 16 old people with beta amyloid in the brain but no memory loss symptoms, and 33 healthy old people. The brain data of the person is analyzed. When beta amyloid bodies appeared in the brains of these 16 elderly people, it was found that the cerebral blood flow exceeded the normal value.

　　In addition, when conducting memory tests on these volunteers, researchers found that volunteers with beta-amyloid bodies were more excited than healthy people in certain parts of the brain. All these results indicate that the brain has a compensation mechanism in dealing with beta amyloid problems. Researchers say these results help explain why some elderly people have beta-amyloid in their brains without symptoms of Alzheimer's disease. It also helps to deepen the understanding of the etiology and drug development of Alzheimer's disease.