News

Two new letters in the DNA alphabet

Artificial bases, although they are not able to encode amino acids, can be used as markers in the chromosomes of genetically modified organisms. They can be used both in theoretical research and in applied research, including in nanotechnology.

Nicotine addiction genes

The "smoking genes" that correlate most strongly with increased cravings for nicotine, the researchers considered certain gene variants of two membrane proteins of nerve cells – alpha-3 and alpha-5 subunits of the nicotine receptor. Now pharmacologists know the targets for new generation anti-nicotine drugs.

Bionic prostheses work almost like living hands

The world's first commercially available bionic prosthetic hands with control of all fingers of the hand have already been received by more than 70 owners in different countries. In a month, manufacturers hope to celebrate the production of the hundredth biomechanical arm.

A midlife crisis is inevitable, but by old age you will be optimistic again

In the average person, the deterioration of the psychoemotional state occurs gradually and in most it stops only after 50 years. However, by the age of 70, if a person remains in good physical shape, his subjective feeling of happiness corresponds to the attitude of a 20-year-old.

Nanotubes–radioprotectors: 5000 times better

A new radioprotector drug based on carbon nanotubes is designed to prevent the death of people from acute radiation sickness developing with massive radioactive exposure.

Scars adorn men, but you can do without them

Suppression of the expression of one of the genes that are usually activated in the cells of the wound surface accelerates wound healing and prevents scarring.

Owls and larks, check the biological clock!

"Owls" and "larks" differ from each other in the speed of the biological clock, localized in the hypothalamus. The speed of this clock, as it turned out, is programmed at the genetic level.

Nanofilm will hide drugs from the immune system

Scientists have covered tiny chips with layers of inert polymer nanofilm, making them "invisible" to the body's immune system. After that, the anti-inflammatory drug dexamethasone was introduced between the layers of the film and chips were implanted in mice.

Genes of predisposition to herpes

To search for genes of predisposition to the formation of herpetic ulcers, the authors used a method of analyzing the coupling between gene loci, which allows tracking genetic markers in families to identify regions of chromosomes containing genes of predisposition to the disease.

A find for a spy

Over the past year, several foreigners have been prosecuted in the Novosibirsk Region for collecting classified information in the field of scientific developments of scientists of the Siberian Branch of the Russian Academy of Sciences.

High blood sugar? Try switching to decaf coffee!

On the "caffeine day", the average daily blood sugar level of patients increased by 8% compared to the average daily value in the absence of caffeine. Caffeine also aggravated the increase in glucose levels after eating.

Vitamin E will help to keep fit in old age

The deterioration of physical condition in people with low levels of vitamin E in the blood occurred 1.62 times faster than in people with high levels of this vitamin.

Hormonal contraceptives prevent ovarian cancer

Hormonal contraceptives continue to protect a woman from developing ovarian cancer for 30 years after the end of their use.

Stem cells in the pancreas still exist

Two weeks after cutting the duct through which digestive enzymes move from the pancreas to the intestine, the number of beta cells in the pancreas of mice doubled. The usefulness of the newly formed cells was evidenced by a simultaneous increase in the amount of synthesized insulin.

Marital quarrels will save your health

If a person does not try to resolve the conflict, hides his discontent, repeatedly replays the situation in his head and experiences growing resentment about the source of the conflict, this can have the most deplorable consequences.

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I warned you!