Lack of Sleep "Switches" off Genes
One week of bad sleep can "switch off" hundreds of genes and raise the risk of a host of illnesses which is linked to higher body weights or heart disease, scientists claim. 36 Getting fewer than six hours' sleep per night can switch off genes in the body according to a new study.
Our bodies depend on genes to produce a constant supply of proteins which are used to replace or repair damaged tissue, but after a week of lacking in sleep some of genes stopped working. 37 Scientists from Surrey University divided 26 volunteers into two groups, one of which slept for less than six hours per night for a whole week, and one of which slept for ten hours per night. At the end of the week each group was kept awake for 40 hours and donated blood samples, which were studied to examine the effects of their sleep states. 38
Although a week's normal sleep was enough to restore the affected genes to their normal pattern, researchers said that long periods of sleeplessness could lead to serious health problems including heart disease.
39 Prof Colin Smith, one of the authors of the new paper, which was published in the Proceedings of the National Academy of Sciences journal, said, "This is only a week of short time sleeping and it is only five and a half or six hours night. Many people have that amount of sleep for weeks, months and maybe, even years so we have no idea how much worse it might be."
If these processes continue to be disordered, you could see how you are going to get damage of organs, tissues, heart disease, etc. 40
A. Genes in our bodies play a key role in the constant process of self-repair.
B. The group of lack of sleeping was found to have changed the function of 711 genes.
C. The other participants were monitored as they slept with their rest disturbed on some of the nights.
D. The results suggest that shorter sleep provides a more permissive environment only for heart disease.
E. If you are not able to repair cells and tissues that are damaged then you are going to suffer permanent ill health.
F. Studies have also shown the lack of sleep can lead to some other problems, for example limiting our ability to drive a car safely.
G. The findings suggest that long-lasting lack of sleep could prevent the body from fully repairing itself and raise the risk of a host of diseases.
答案
AGBFE
One week of bad sleep can "switch off" hundreds of genes and raise the risk of a host of illnesses which is linked to higher body weights or heart disease, scientists claim. 36 Getting fewer than six hours' sleep per night can switch off genes in the body according to a new study.
Our bodies depend on genes to produce a constant supply of proteins which are used to replace or repair damaged tissue, but after a week of lacking in sleep some of genes stopped working. 37 Scientists from Surrey University divided 26 volunteers into two groups, one of which slept for less than six hours per night for a whole week, and one of which slept for ten hours per night. At the end of the week each group was kept awake for 40 hours and donated blood samples, which were studied to examine the effects of their sleep states. 38
Although a week's normal sleep was enough to restore the affected genes to their normal pattern, researchers said that long periods of sleeplessness could lead to serious health problems including heart disease.
39 Prof Colin Smith, one of the authors of the new paper, which was published in the Proceedings of the National Academy of Sciences journal, said, "This is only a week of short time sleeping and it is only five and a half or six hours night. Many people have that amount of sleep for weeks, months and maybe, even years so we have no idea how much worse it might be."
If these processes continue to be disordered, you could see how you are going to get damage of organs, tissues, heart disease, etc. 40
A. Genes in our bodies play a key role in the constant process of self-repair.
B. The group of lack of sleeping was found to have changed the function of 711 genes.
C. The other participants were monitored as they slept with their rest disturbed on some of the nights.
D. The results suggest that shorter sleep provides a more permissive environment only for heart disease.
E. If you are not able to repair cells and tissues that are damaged then you are going to suffer permanent ill health.
F. Studies have also shown the lack of sleep can lead to some other problems, for example limiting our ability to drive a car safely.
G. The findings suggest that long-lasting lack of sleep could prevent the body from fully repairing itself and raise the risk of a host of diseases.
答案
AGBFE
苏19057182-3号