Poor sleep can lead to dementia, say scientists from the University of Washington (USA). The experiment showed that even one night worrying infests the brain of toxic proteins. Healthy volunteers between 35 and 65 years two weeks wore sensors that gathered information about their sleep. And twice slept in the laboratory. Once, just slept, in the second sound signals did not allow them to sink into a deep sleep. The spinal tap showed that after one restless night in the body by 10 percent increases the level of beta-amyloid. This protein disrupts communication between neurons and are characteristic of Alzheimer’s disease. The protein level was higher in those who slept poorly during the week before the puncture. According to lead study author yo-El Ju, a one-time sleep disorders have serious consequences, but chronic insomnia is a big problem for the brain. Learn more: libra pharm
Even one disturbing night infests the brain of toxic proteins
If the cancer not amenable chemotherapy, he can be destroyed by iron ions. Modern cancer drugs are trying to launch in tumor cells apoptosis is a widespread and safe for the body mechanism of cell death. But cancer cells are very easy to adjust to the medication and simply ignore signals for apoptosis. But there is good news. Scientists at the broad Institute (USA) found: if cancer cells are difficult to induce apoptosis, they can easily die from ferropasa. This is a newly open mechanism of cell death with the participation of iron ions. Ions oxidize substances in the layer of cells that die. Study leader Stuart Schreiber sure if cancer cells disable the gene GPX4 against ferrophase, it will allow to develop new effective treatments.
Worse than fast food
House dust can cause obesity. It accumulates substances from household chemicals, which can influence adipose tissue. Scientists from Duke University (USA) raised in a laboratory colony of precursors of fat cells. Then gathered dust in 11 different houses and put her in a cell colony. Nine of the colonies began to grow abnormally fast, to share and to turn into fat cells. It turned out that more than other the increase was impacted by substances contained in varnishes, sprays, mosquito repellent, paints and adhesives. “The results of the experiments paint a disturbing picture, especially for children’s health,”— said study leader Christopher Kassotis. He plans to further study the mechanism of action of these substances on cells in more detail.
Happiness is to be generous
Why people feel happy, generous, learned scientists of the University of Zurich (Switzerland). They conducted an experiment with two groups of 24 people. For four weeks the volunteers received 25 Swiss francs. A control group spent the money on themselves. And experimental to someone else.
All the volunteers did functional magnetic resonance imaging that shows activity of neurons. When the participants showed generosity to others, they have activated a particular area in the striatum of the brain, which produces “happiness hormone” — dopamine. Moreover, the activity of this zone is not dependent on the price of the gift. That is the pleasure aroused by the fact of donation.
To put on the outflow
A new method of treating glaucoma experience in Novosibirsk employees of IRTC “eye microsurgery” and other research centers. Glaucoma leads to blindness. But if you lower the eye pressure due to tissue edema (concomitant disease), vision loss can be slowed down or even stopped. One way is to make artificial drainage. In the eyes of the inserted implant from the polymer. When the pressure increases, through out excess liquid. One problem: the immune system perceives the drainage as a foreign object, so he quickly covered with scar tissue, that is “overgrown”. Scientists “tricked” the immune system using substances similar in composition to human tissues. According to one of the authors of Peter Larionov, after four months the implant degrades, and the eye remains a natural channel for the outflow of liquid.
Strawberries can slow memory loss in elderly people and to reduce inflammation. More precisely, not the strawberries, but it contains fisetin. Scientists from the Institute of biological research Salk (USA) conducted experiments on genetically modified mice, which used to begin aging — in 10 months. Seven months the mice received fisetin, and the control group ate regular food. By the end of the studies the second group of rodents, have experienced problems in the execution of all tests on memory and attention. A mouse that was on fisetin 10 months, showed the same mental abilities as the mouse from the control group at 3 months. “Fisetin can be useful as a prevention of many cognitive problems that appear with age,” said researcher Pamela Maher.