Showing posts with label Scientists. Show all posts
Showing posts with label Scientists. Show all posts

Tuesday, December 21, 2010

People in a coma able to learn, - scientists


It turned out that people who are in a coma, despite the lack of means to give signals about its condition, can learn. This suggests that they are at least partially retain consciousness

Scientists first tested the ability of patients in a vegetative state and minimal consciousness, to learn. Convinced that such patients have the ability, the scientists intend to propose this simple test for use by practitioners. This saves doctors from having to assess the state of consciousness with the help of magnetic resonance imaging, reported MedicInform.Net

Using the classical conditioned reflex, the researchers lost a certain sound just before a blow to the patient in the eye. After some time, patients began zazhmurivat eyes, as only heard this sound.

Such learning requires conscious build links between stimuli - playing sound and the subsequent events. A similar study with a control group of volunteers in the state of anesthesia, did not happen.

The researchers believe that patients' ability to capture the connection between the events, said that they can form memories, and therefore can be subjected to rehabilitation. This test can be useful, since it is a very simple way to assess the patient's consciousness, which does not require special equipment.

In addition, the findings suggest that these patients have a chance for partial recovery, summed up the experts.

Tuesday, December 14, 2010

Light therapy get rid of wrinkles - scientists


The combination of light therapy and lotion from green tea extract works ten times faster than similar methods of LEDs wrinkles, according to dermatologists at the University of Ulm (Germany)

Light therapy or phototherapy is used to treat skin wounds and injuries for over 40 years. But recently, doctors have determined that daily use of high-power LEDs, similar to those used in car headlamps and computers, will eliminate wrinkles on the skin for a few months. It is reported by AMI-TASS

However, exposure to intense light sources in the dermis also entails adverse effects such as formation of a high level of reactive oxygen species, potentially damaging the cells. As a result of scientific experiments, it was recorded that in combination with a powerful antioxidant extract epigallocatechin gallate, entitled, extracted from green tea, the work of the LEDs does not bring harm to the skin.

In the study volunteers for a month daily experienced the combination of light therapy with the composition of green tea. At the end of observations physicians noticed significant improvement in surface texture of the skin on the face: wrinkles becomes less pronounced and the skin more smooth and soft.

Dermatologists believe that the innovative technique will be a promising tool for skin rejuvenation and help to understand the effect of reactive oxygen species on cellular aging.

Pairs is more useful to sleep separately - scientists


Couples who sleep in separate rooms - well, thanks to a deeper and more comfortable sleep, say British experts

Researchers found that couples who divide one bed at night, during sleep have more distractions, such as snoring, and other than those partners who sleep separately. It is reported MedicInform.Net

Experts believe that couples should not be afraid to think about buying an extra bed. We all know how it is - to embrace, say good night, and then revert to the opposite side of the bed, so why not go before you go, experts say.

Experts say that when a person turns in his sleep, he may change during sleep stalls. If the person does not have sleep disorders, is when a dream turns or moves his partner, he also begins to spin and move, but usually it does not lead to an interruption of sleep, the researchers explained.

However, if a joint sleep in one bed does not cause you discomfort, no need for "siding" for individual rooms. The question is, how do you like best. If you sleep together and still feel great, you do not need to change anything. However, it is important not to be afraid to make changes, if they really have the need, the scientists conclude.

Saturday, December 11, 2010

Discovered a gene predisposition to heart disease


60 million people worldwide are carriers of a genetic mutation, which almost inevitably lead to the development of their heart disease

Such a study published in the journal Nature Genetics.

For the first time scientists have discovered a gene mutation responsible for protein production MYBPC3 (it is contained exclusively in heart tissue), five years ago in two Indian families whose members suffered from cardiomyopathy - a disease that leads to the defeat of the heart muscle.

To conduct a larger study involved 800 patients were suffering from heart disease in the control group included 700 volunteers. His results showed that the genetic mutation of this kind is common and is observed in approximately one hundredth of each person.

The risk of developing diseases related to the cardiovascular system, the mutant gene carriers jump seven times, which means almost inevitable occurrence of the disease.

In the lab, the researchers demonstrated that heart cells that bear a mutation, which falls 25 letters of genetic code that produces a defective protein MYBPC3, which violates the structure of the heart muscle.

According to scientists, people younger organism successfully coped with the "breakdown" and restore the correct protein structure. However, in adulthood, this mechanism starts getting worse, which leads to the development of cardiovascular disease, transmit medicinews.ru.

Chris Tyler-Smith, a member of the British Institute Wellcome Trust Sanger Institute believes that this genetic mutation occurred about 30,000 years ago.
According to him, it is easy to test young people for the presence of mutations. But the problem is that effective methods of treatment has yet been found, and all that the doctor may suggest a mutant gene carriers - is to lead a healthy lifestyle.

Monday, December 6, 2010

Wasteful harms health - Scientists


Financial imprudence is associated with impulsive behavior such as overeating, smoking, apathy, nervousness

Also, people mindlessly related to spending money, proved indifferent to our future, say British experts

Scientists have conducted in conjunction with the service BBC poll, which was attended by more than 40,000 respondents.

The task was to measure the financial impulsivity respondents. They were asked to answer the question: would prefer they get 45 pounds in three days or 70 pounds in three months? Was also given a series of related questions about the behavior of participants.

About half of respondents would prefer faster, but less money, and they are more likely to demonstrate impulsive behavior. It is reported MedicInform.Net

One of the central issues of financial planning is a decision about whether to spend money or not. Sometimes decisions are made on the basis of knowledge and experience, and sometimes reflect the personality characteristics in general, experts explained. The new study was published in the journal Personality and Individual Differences.

According to researchers, the study showed that people with impulsive attitude towards money ignore the future. For example, they are more likely to smoke, more obese, which may indicate their preference to get immediate satisfaction from nicotine and food in place in order to maintain long-term health.

Also, people who prefer less money, but soon admitted that last year they had an affair on the side: it suggests that the desire for momentary pleasure they take precedence over common sense. It also emerged that only impulsive with money seek young, poorly educated and not wealthy people, the experts concluded.

Level of happiness depends on genes and lifestyle - scientists


The level of man's happiness is partly determined by personality traits, and this is mainly due to genes, according to British experts from the University of Edinburgh

Scientists to these conclusions led the study 900 pairs of identical and nonidentical twins. Identical twins have identical genes, and fraternal - not, and university staff tried to find out how much the genes are determined by their individual traits. It is reported MedicInform.Net

Scientists interested in people who do not have the habit of worry, communicative and responsible. In other studies, all three of these components were associated with a feeling of happiness or well-being, since they serve as a buffer in case a person is in a stressful situation.

The results showed that the genes may be responsible, at least for half of the character traits that make us happy. The second half is related to lifestyle, career and relationships. Those who inherit certain genes of predisposition to happiness, get emotional reserve, which is implemented in times of distress and accelerates the recovery of human, scientists say.

Monday, November 29, 2010

Vegetarianism leads to memory impairment


British scientists have concluded that vegetarianism has a direct impact on memory impairment, and problems with brain vegetarians have up to 6 times higher than that of people with a balanced diet

The problem of senile memory impairment is one of the most pressing against the background of increasing human longevity, which is growing from year to year, but only the rare old leads an active lifestyle, which is due to degradation of the brain. Brain cells begin to die after 25 years, and after a 40 day brain loses 100 to 2 million neurons, so there is nothing surprising in the fact that with age, problems associated with deterioration of memory, attention, vision and hearing.

British scientists within five years studying the causes that affect cognitive function in the brain, according to brainmed.ru. And they came to the conclusion that vegetarianism has a direct impact on memory impairment, and problems with brain vegetarians have up to 6 times higher than that of people with a balanced diet.

It is not that sensational findings of scientists, they have only confirmed that the brain without amino acids and vitamins can not normally or develop or operate. Part of the essential amino acids, which are neurotransmitters, which were essential to the work of memory and intellectual activity, enter the body only from foods of animal origin (meat, eggs, milk, fish).

Also most of the vitamins necessary for a synthesis of hormones and neurotransmitters, are practically absent from foods of plant origin. Lack of these essential substances, and leads to accelerated degradation of the brain in elderly people. A vegetarian diet is as dangerous and for posterity.

As follows from the report of American doctors, children vegetarian mothers are at risk of mental retardation due to lack of the same vitamins and amino acids that lead to degradation of the brain in the elderly. Child's brain during the first months of life developed very rapidly, and in mother's milk, vegetarian is not enough vitamins and amino acids for its full development.

Many vegetarians are trying to compensate for the lack of animal protein by increasing intake of legumes, especially soybeans. But, unfortunately, do it practically impossible: found in legumes, not all amino acids and vitamins necessary for the brain. Moreover, by-products may lead to opposite effects.

Thus, according to research experts from Oxford University found that tofu affects the memory of people, notably in old age. Under the influence of tofu at 20% worsening brain activity, and as a result, deteriorating memory.

Saturday, November 27, 2010

Scientists discover why a red-haired people are afraid of dentists


American scientists have discovered that red-haired people are afraid of dental visits stronger than the other, and have found the genetic basis of this fact

Red hair color is caused by certain species of the gene encoding the melanocortin receptor 1 (MC1R), is responsible for pigmentation. Contrary to the existing point of view that this gene is active only in the skin, hair and iris of the eye, recent studies have shown that it also functions in the brain that control pain reactions, anxiety and fear.

To confirm the role of the MC1R gene in the formation of these reactions, researchers from the University of Louisville in Kentucky examined the association of red hair color and the corresponding gene variants with the reaction to dental treatment, according to medportal.ru.
Revealed that of 144 white volunteers greatest anxiety when visiting the dentist showed carriers of the variants of the gene MC1R. They also tried to avoid dental treatment twice as often as the other participants of the experiment.

Carriers studied variants of the gene were 65 of 67 red-haired volunteers. At the same time, one of these options are found only a quarter of the 77 dark-haired participants.

Based on these results a team led by Katherine Binkley recommended a dentist to place more emphasis on psychological preparation of patients for the upcoming red treatment.

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