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2023-11-19 15:00:00

#GISMETEO #Scientists #named #effective #overcome #fear #aging #Science #Space

A new study, which was conducted by a team of Australian, American and Canadian scientists, demonstrated that in people over 60 years of age, even a slight reduction in the duration of the deep sleep phase, which is extremely important for the body, can cause the development of dementia. This is what it says publication V JAMA Neurology.

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For their work, experts used data from the Framing Heart Study, from which experts selected information on 346 people aged about 69 years with an approximately equal ratio of men and women. During the course of the project, these people underwent overnight polysomnography twice, during which a person’s sleep is studied using special equipment. One of the criteria for the current work was the absence of dementia in the subjects at the time of the second polysomnography.

During the analysis, experts determined that the duration of deep sleep between two studies with a difference of three to six years decreased in the subjects by an average of 1.5% per year, which confirmed the connection between aging and the reduction of the corresponding sleep phase. Over the next 15 years of follow-up, 52 cases of dementia were recorded among the participants.

Taking into account many factors, the researchers concluded that an annual decrease in the duration of deep sleep increased the risk of developing the disease by 27%.

2023-11-12 10:18:00

#GISMETEO #Slight #reduction #deep #sleep #time #quarter #increases #risk #dementia #Science #Space

Finnish researchers identifiedthat willow bark extract is effective against viruses.

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To prepare it, experts collected willow branches, cut the bark, froze, then finely chopped and poured hot water. This is how samples were obtained that were subsequently tested on enteroviruses and coronaviruses.

Experts have found out how long-lasting the effect of this drug is and how well it blocks the activity of viruses.

It turned out that the extract provided reliable protection of cells from infection without damaging them. Experiments that were carried out with coronavirus samples demonstrated that, despite the ability of this virus to penetrate cells, when they are treated with the extract, it loses the ability to reproduce.

Scientists have found that this product has an effect on the surface of viruses. The enveloped coronaviruses collapsed, and the non-enveloped enteroviruses were unable to release their genome.

In the future, it will be necessary to find out which particular substance in the extract has such a strong effect.

2023-11-11 15:29:34

#GISMETEO #Willow #extract #unexpected #effect #Coronavirus

Swiss specialists from the Federal Polytechnic School of Lausanne, using a specially developed neuroprosthesis, managed to compensate for gait disturbances in monkeys, as well as in one patient with late-stage Parkinson’s disease. This is what it says publication V Nature Medicine.

In the later stages of this disease, those suffering from it experience problems with gait and maintaining balance. To treat such conditions, deep brain stimulation or drugs are used that restore the lack of dopamine, which, in turn, is considered a key cause of problems with the motor system. In addition, in order to modulate brain activity, electrical stimulation of either the cervical or thoracic regions of the brain is sometimes used, the influence of which, however, is very limited, and sometimes they do not show effectiveness at all.

The Swiss decided to try to stimulate the lumbosacral region, influencing the neurons that provide walking, which are not directly affected by the disease. First, the scientists tested the prosthesis they developed on rhesus monkeys, which were stimulated with disorders that mimic Parkinson’s disease, which made it possible to achieve almost problem-free walking, as well as improve their posture.

After this, scientists made a neuroprosthesis for a 62-year-old man who had been suffering from the disease for 26 years. They approached his case a little differently, and did not place electrodes in the brain, limiting themselves to sensors on the leg muscles, signaling the intention to start moving and generating impulses for epidural stimulation. This was enough to make it much easier for the man to walk and maintain balance, and the improvement progressed after three months of training.

2023-11-10 16:25:18

#GISMETEO #man #suffering #Parkinsons #disease #walk #independently #neuroprosthesis #Science #Space