News

Sleeping long on weekends is useful

The authors claim that the elimination of sleep deficiency significantly improves both mental and physical abilities of a person. At least they provide people with a scientific justification for getting up late on weekends.

Face on the chest

The operation took place in several stages. First, surgeons took tissue from the girl's hip and transplanted it just below the left shoulder. When the new skin grew, the doctors sewed it to the face.

Follicular dendritic cells hide HIV from drugs

The mechanisms of follicular dendritic cells work so well that HIV particles remain out of reach of drugs entering the bloodstream, which contributes to the chronization of infection.

Biodegradable gel to stop bleeding will soon be on the market

In addition to reducing the time to stop bleeding, the new approach can improve the results of surgical interventions, especially when removing large tumors, when it takes a very long time to stop extensive diffuse bleeding by traditional methods.

Absinthe is not a psychedelic, but a path to rapid alcoholism

Flagellin will protect healthy cells from radiation

The new drug can be used to reduce the side effects of radiation therapy in cancer patients, as well as serve as an emergency aid for people who have been exposed to general radiation.

The first artificial transposon has been created

Excessive fat intake alters the expression activity of a whole complex of genes, which leads not only to obesity, but also to the development of diabetes and cardiovascular diseases. Scientists believe that these changes can be predicted using laboratory methods.

New target of anti-cancer therapy: pyruvate kinase PKM2

Scientists have isolated an enzyme that gives cancer cells the ability to consume huge amounts of glucose.

Amino acid replacement protects against senile dementia

A point mutation in the COMT gene slows down the age-related decline of thinking abilities. Elderly people with a variant of the gene, in which one of the amino acids in the corresponding enzyme is replaced with methionine by valine, performed tests 33-45% better than the owners of the "methionine" variant.

Diet by genes

In order to increase the effect of the diet by 2 times, it is necessary – depending on the combination of variants of the three main genes "responsible" for fat metabolism – to limit the consumption of fats or carbohydrates or adhere to a balanced diet.

Endothelial cells from stem cells: ten times faster

The new method makes it possible to obtain seven full–fledged endothelial cells from each stem cell - 35 times more than before. The cells obtained in this way quickly assimilate and begin to function along with the native endothelium.

Corrupt pharmaceuticals

In December 2009, the WHO newsletter "Medicines: Corruption in the pharmaceutical industry" was published.

The recipe for a heart attack: stuff stem cells with magnetic nanoparticles...

In animal experiments, scientists were able to achieve a 5 times higher concentration of stem cells at the site of the lesion than in the control, when cells without magnetic nanoparticles were transplanted.

Tomorrow in LETI: Kornberg and other Nobel laureates.

D.Gross (Physics, 2004), R.Kornberg (Chemistry, 2006), A.Heger (chemistry, 2000) and A.Giaver (physics, 1973) will discuss with students, graduate students and young scientists the latest achievements and topical issues of modern science.

A quarter of a century of DNA "fingerprints"

The scientist, who proposed to identify a person by DNA by analogy with fingerprints, celebrated the 25th anniversary of his revolutionary discovery with a call to change the law governing DNA databases.

Mutation rate: up to a nucleotide per generation

For the first time in the world, direct measurements of the frequency of occurrence of single nucleotide polymorphisms (SNPs) were carried out from a human.

Diet and longevity: the molecular relationship

Scientists have identified a key element determining the relationship between diet and longevity. As it turned out, two proteins are responsible for the lifespan of nematodes, the activity of which depends on the amount of food consumed.

Find and Destroy – scientists plan to treat cancer with nanoparticles

Scientists tracked the movement of a cancer cell containing carbon nanotubes in the vessels of an animal, through the circulatory, lymphatic systems and tissues using a Raman spectrometer, and then destroyed it with a laser beam.

Prostate adenoma? Try Botox!

An effective reduction in the size of the prostate gland occurred in 73% of patients with prostate adenoma who used a dose of botox in 100 units, and in 81% of those who used a dose of 300 units. As a result, the improvement was 30% relative to the initial state.

Safe needle for injection

The new needle is given an S-shape; inside it is a thread used as a conductor (similar to the conductor in a catheter). During the injection, the force is applied not to the needle, but to the conductor, thanks to a special cannula device.