4hw.org: Recently, the latest research of foreign scientists shows that when the mice are lack of sleep, the brain will appear 'autophagy', and the brain 'clear cells' will be active, which will clear the synaptic brain cells, while the human brain will show bad phenomena when lack of sleep, which is more likely to cause the memory degradation of Alzheimer's disease.
The researchers studied mice in the lab and found that when they didn't sleep enough, the 'clearing cells' in the brain became more active. These cells are called' astrocytes', just like the micro Hoover electric vacuum cleaner. When the brain connections become weak and split, they will start to clear the synaptic cells.
Michele bellesi, the study's author and a researcher at the University of technology in MARKAY, Italy, said: 'for the first time, we found that the synaptic part was engulfed by astrocytes due to lack of sleep. The results of the study seem to be very worrying, but they are actually a positive thing.
"Synapses are like old furniture, and at the same time, they may need more attention and clearance," berecy said. "But he added that lack of sleep can cause the brain to show bad signs, which could lead to Alzheimer's disease. In the sleep deprived mice, brain cells called microglias were still active.
We already know that Alzheimer's disease and other neurodegenerative diseases have sustained microglial cell activity. It is reported that a previous study shows that people are at risk of heart disease if they sleep too little. The study found that people who sleep less than six hours a night have a higher incidence of metabolic syndrome, which can induce diabetes, high blood pressure and obesity.
The researchers point out that the symptoms are particularly pronounced in people with elevated blood pressure or poor glucose metabolism. If people sleep less than six hours a night, people at risk for heart disease and diabetes are twice as likely to have a heart attack or stroke, according to a study in the Journal of the American Heart Association.
For people who sleep more, their risk of death will be significantly reduced. The latest study is the first to measure sleep duration in the laboratory, rather than relying on patients' diagnostic reports, and is the first to examine the effect of sleep duration on death in a population at risk for heart disease.
The researchers randomly selected 1344 adults, with an average age of 49, who agreed to spend the night in a sleep lab. Their results showed that 39.2 subjects had at least three risk factors, which combined to form metabolic syndrome. In addition, these risk factors will lead to a body mass index (BMI) of more than 30, which is the standard index for measuring body obesity, as well as an increase in total cholesterol, blood pressure, fasting blood glucose and triglyceride index.
The mean follow-up time was 16.6 years, 22 patients died. Compared with those without risk factors, those with metabolic syndrome who slept more than six hours in the laboratory were 1.49 times more likely to die of stroke in the follow-up survey, but those who slept less than six hours in the laboratory were 2.1 times more likely to die of heart disease or stroke.