Question

[Dương Minh]

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The reason women appear to be at greater risk of developing Alzheimer’s disease than men might be due to a number of genetic, anatomical and  even  social  influences,  researchers  have  suggested.  Recent figures show about 65% of those  with living with dementia in the  UK are women,  with a  similar statistic seen in the US for Alzheimer’s disease, while dementia is the leading cause of death for women in England. Alzheimer’s disease is only one of the types of dementia, but the most common form. While one explanation is that dementia risk increases with age, and women have longer life expectancies than men, new research suggests there might be more to the matter, including that protein tangles found within neurons and linked to Alzheimer’s disease might spread differently in women’s brains than men’s. The study, presented at the Alzheimer’s Association International Conference in Los Angeles by researchers from Vanderbilt University and which has not yet been peer-reviewed, used scans from a method called positron emission tomography. That allowed them to look at the way clumps of a protein called tau were spread in the brains of 123 men and 178 women without cognitive problems, as well as 101 men and 60 women with mild cognitive problems – although not yet diagnosed with Alzheimer’s disease. Cognitively normal older people often have small amounts of tau in certain areas of their brain. From the data the team could build maps showing which areas of the  brain  show  similar  signals relating to tau in the scans, suggesting they are somehow connected. “Based on that we kind of try to reconstruct the pattern of spread,” Dr Sepideh Shokouhi, who is presenting the research, told the Guardian. “It is kind of like reconstructing a crime scene.” The team says the results suggest these maps look different in women and men, suggesting tau might be able to spread more rapidly across the female brain.

Other research presented at the conference – and also not yet peer reviewed – added weight to the idea that there might be differences between men and women that affect dementia risk. Research by scientists at the University of Miami has revealed a handful of genes and genetic variants appear to be linked to Alzheimer’s disease in just one biological sex or the other. While the actual importance of these factors has yet to be unpicked, and the study only looked at white participants, the team says it underscores that there could be a genetic reason for differences in the risk of dementia in men and women, and the way it develops.

As mentioned in paragraph 3, positron emission tomography is a method to   .

A.distinguish between the amount of tau in normal people and that in those with cognitive problems.

B.diagnose who are easier to get Alzheimer’s disease.

C.observe the increase of a protein called tau in the brains of subjects.

D.review whether people with cognitive problems have a protein called tau or not.

Answer 1

[Nguyen Hoang Hai]

Đáp án C

Như được đề cập trong đoạn 3, chụp ảnh cắt lớp nhờ phóng xạ là một phương pháp để_______.

A.phân biệt giữa số lượng protein T trong người bình thường và trong người có vấn đề về nhận thức.

B.chẩn đoán ai là người dễ mắc bệnh Alzheimer hơn.

C.quan sát sự phát triển của protein T trong não của đối tượng nghiên cứu.

D.đánh giá liệu những người có vấn đề về nhận thức có protein T hay không.

Căn cứ thông tin đoạn 3:

The study, presented at the Alzheimer’s Association International Conference in Los Angeles by researchers from Vanderbilt University and which has not yet been peer-reviewed, used scans from a method called positron emission tomography. That allowed them to look at the way clumps of a protein called tau were spread in the brains of 123 men and 178 women without cognitive problems, as well as 101 men and 60 women with mild cognitive problems – although not yet diagnosed with Alzheimer’s disease.

(Một nghiên cứu, được trình bày tại Hội nghị quốc tế Hiệp hội Alzheimer ở Los Angeles bởi các nhà nghiên cứu của đại học Vanderbilt và vẫn chưa được kiểm duyệt, đã sử dụng các hình ảnh cắt lớp từ một phương pháp gọi là chụp ảnh cắt lớp nhờ phóng xạ. Phương pháp này cho phép họ quan sát cách mà một nhóm protein có tên gọi là T phát triển trong não 123 người đàn ông và 178 phụ nữ không có vấn đề về nhận thức, cũng như não của 101 đàn ông và 60 phụ nữ có vấn đề về nhận thức ở mức nhẹ - mặc dù vẫn chưa được chẩn đoán là bị Alzheimer).