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Found results: 3399

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The wheelchair will be controlled using the language

American scientists have created a device that allows you to control a wheelchair and a computer mouse using a tiny magnet implanted in the tip of the tongue. The new technology may be especially useful for people with severe spinal cord lesions and neuromuscular diseases.

01.07.2008
News

Every dentist has a weapon against cancer in his office

Light waves in the blue-violet region of the spectrum accelerate the polymerization of composite plastics used in dentistry due to the fact that free radicals are formed under their action, activating the catalyst. Scientists at the University of Georgia have found that irradiation with "dental" light of malignant tumors of the oral cavity suppresses the growth of cancer cells and stimulates their death.

01.07.2008
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Granulocytes from healthy donors – a cure for cancer?

The authors tested leukocytes from healthy donors with high antitumor activity against human cervical, prostate and breast cancer cells. Unexpectedly good results were obtained in all experiments. Experts emphasize that granulocytes, which carry out innate immunity reactions, have predominantly antitumor activity.

01.07.2008
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Reprogrammed poliovirus for safe vaccination

Scientists injected various variants of synthetic poliovirus into mice, most of which did not have any manifestations of the disease, but the synthesis of antibodies against poliovirus took place. These viruses are not yet suitable for human vaccination, but the proposed approach has enormous potential.

01.07.2008
News

"Black transplantologist" got a term

In three years, the proceeds of a thriving funeral home from the evisceration of corpses amounted to almost five million dollars. Donor organs with fictitious permits of relatives of the deceased were sent to various medical centers in the USA and Canada.

01.07.2008
News

Liquid crystals for DNA analysis

Liquid crystals can undergo changes in their organization in response to a slight change in the primary structure of DNA, including mutations at the level of one nitrogenous base.

01.07.2008
News

Atherosclerosis? Don't forget to check the arterial calcium index!

Atherosclerosis of the coronary arteries significantly increases the likelihood of myocardial infarction. When identifying people who are at risk for cardiovascular diseases, it is necessary to pay attention to the calcium index of the coronary artery.

30.06.2008
News

Coffee reduces the risk of liver cancer

There is a pronounced inverse relationship between coffee consumption and the risk of liver cancer. In addition, a high level of the liver enzyme gamma-glutamyltransferase in the blood is associated with an increased risk of developing the disease.

30.06.2008
News

At your age, Grandfather, it is harmful to lack of sleep!

In elderly people, lack of sleep can aggravate already, as a rule, impaired protective reactions to abnormal folding of protein molecules, the frequency of which increases as the cell ages. The accumulation and aggregation of abnormal proteins in the cell is associated with many diseases, including Alzheimer's and Parkinson's diseases.

30.06.2008
News

Type 2 diabetes? Take care of your brain – it's easy!

Type 2 diabetes is associated with chronic oxidative stress, which plays an important role in the processes of deterioration of cognitive function and the development of Alzheimer's disease. Eating fatty foods can lead to a sharp increase in the level of free radicals that trigger oxidative stress and damage tissues, including brain tissue.

30.06.2008
News

Counterfeiters

In Europe, expensive medicines are most often forged. In Russia, medicines are forged according to the principle of popularity – those that are in great demand are chosen.

27.06.2008
News

How to determine life expectancy by blood test

Taking as a basis the fact that white blood cells – leukocytes – perform the function of fighting infections and thus prolong human life, scientists at the University of Palermo analyzed the relationship between life expectancy and the content of leukocytes in the blood.

27.06.2008
News

New growth inhibitors of estrogen-dependent breast cancer

Several substances have been identified that inhibit the binding of regulatory regions of DNA with the estrogen-receptor complex activating them. These compounds effectively blocked the production of proteins that stimulate the growth and proliferation of cancer cells expressing

27.06.2008
News

How to repair mitochondria?

The authors believe that this discovery expands the therapeutic possibilities of introducing normal tRNAs into defective mitochondria of patients in order to correct violations.

27.06.2008
News

Epigenetics, age and heredity

The authors believe that, in general, genomic health is an inherited factor, and epigenetic changes observed during life explain the increasing predisposition to the development of various diseases with age.

26.06.2008
News

Quantum dots increase the efficiency of RNA interference

Existing miRNA tracking tags glow for no more than a minute, while quantum dots emit light for many hours. Moreover, the new approach is 5-10 times less toxic to living cells than the chemical compounds currently used to monitor the course of RNA interference.

26.06.2008