Life Sciences

Found results: 11545

Biomedicine

Repair of the "guardian of the genome"

American biologists have learned how to correct damaged molecules of the p53 protein in cancer cells, which protects healthy cells from the appearance of fatal mutations in DNA, which will quickly and practically guarantee to rid patients of some forms of cancer in the near future.

30.01.2013
Biomedicine

A complete, though not final, victory over cancer?

The authors of the project promise that in 5-10 years all cancer patients will be able to receive personalized therapy, which will actually make cancer, if not completely curable, then a controlled disease.

29.01.2013
Biomedicine

DNA vaccine on a patch

Microneedles, painlessly penetrating the skin by no more than half a millimeter, deliver pathogen DNA coated with a polymer film to the cells of the epidermis, which facilitates the delivery of the drug and enhances the immune response.

29.01.2013
Genetic engineering

Turning sticks into cones preserves vision

Blocking the activity of one gene ensured the partial transformation of rods into cones and prevented the development of retinal pigmentation degeneration in the mouse model.

29.01.2013
New in Gerontology

Poor sleep prevents the aging brain from storing information

The age-related weakening of memory is to blame for the loss of the ability of the middle part of the frontal cortex to generate slow waves of brain activity that provide a person with deep restorative sleep.

29.01.2013
Biomedicine

It is better to get vaccinated than to "hem"

A single injection of the "anti-alcohol vaccine" for six months to a year causes symptoms of a severe hangover immediately after taking even a minimal portion of alcohol.

28.01.2013
Other life sciences

Millions of years of immunodeficiency

According to scientists, the "war" between retroviruses related to the human immunodeficiency virus and primates began at least 5-6, or even 12 million years ago.

28.01.2013
Genetics

Epigenetic heredity – how, where, when?

Although the precursors of sperm and eggs are very effective in removing methylation markers from DNA, sometimes they can be mistaken, which allows epigenetic information to be inherited.

28.01.2013
Bioethics

Retired chimpanzees

The US National Institutes of Health is significantly reducing the number of biomedical and psychological studies involving monkeys. NIH will "retire" approximately 700 chimpanzees.

28.01.2013
Biomedicine

Experimental cell cultures

Today, experiments are being conducted on pregnant animals to test drugs for teratogenic safety. German scientists have proposed an alternative to the barbaric method.

25.01.2013
Cellular technologies

Reprogramming of neurons in vivo

Perhaps the technique of direct reprogramming of neurons of other "specialties" into corticospinal motor neurons will help alleviate the condition of people suffering from amyotrophic lateral sclerosis.

25.01.2013
Prolonging youth

Once again about the benefits of a low-calorie diet

Reducing the caloric content of food in mice slows down the shortening of telomeres, prolongs life by 20% and reduces the incidence of cancer and age-related diseases by 40%.

25.01.2013
Genetics

How does the flu "timer" work?

The discovery of American scientists can contribute to the creation of a new type of drugs that will disrupt the "internal alarm clock" of the flu, preventing its spread through the body, and the development of new methods of vaccination.

24.01.2013
Genetic engineering

Store information on DNA carriers

Five files with a total volume of 5.2 megabits were recorded in artificial DNA, including an audio file with a speech by Martin Luther King and a scientific article by Nobel laureates who deciphered the structure of this molecule.

24.01.2013
Other life sciences

Russian scientists have reported on the proteome

The 18th chromosome assigned to Russia in the international project "Human Proteome" has been decoded by 85%. About 250 of its main proteins have been identified, and in 2013 scientists promise to find the rest.

24.01.2013
Cellular technologies

Nose on hand

Scientists from University College London have started growing a new nose for a patient on his own hand.

23.01.2013
Genetic engineering

AIDS: the virus is kicked out by the virus

A group of biologists from Stanford University has developed a new method of protection against the human immunodeficiency virus by studying mutations in the CCR5 and CXCR4 genes that make some people virtually invulnerable to HIV infection.

23.01.2013
Other life sciences

Free radicals help tissue regeneration

Using the example of amputated tadpole tails, scientists at the University of Manchester have made an amazing discovery that can have a serious impact on the further development of regenerative medicine.

22.01.2013
Other life sciences

Cancer and aging: Look at firefly mice

Scientists at the University of North Carolina have created a strain of mice with the firefly luciferase gene. This gene is activated when the normal p16 gene, a tumor suppressor and biomarker of aging, is activated.

22.01.2013