Life Sciences

Found results: 11545

Cellular technologies

Autologous fibroblasts: cellular mesotherapy for skin rejuvenation

For "cellular mesotherapy", his own (autologous) fibroblasts are isolated and cultured from a tiny fragment of the patient's skin. After a series of injections of living cells, the microstructure and appearance of the skin noticeably and permanently improve.

26.03.2010
Other life sciences

How to achieve immortality?

Cells are able to spontaneously achieve a state of immortality (immortalization) by gradually changing the expression of genes that control the processes of DNA repair, as well as cell growth and division.

25.03.2010
Cellular technologies

A heart attack without scarring on the heart?

If we can simulate in mammalian heart cells the process that is observed in danio rerio, we will understand why we have not yet observed the regeneration of the heart in humans.

25.03.2010
Other life sciences

Another human cousin?

The branch of the evolutionary tree on which a possible new species of hominins is located separated from the branch leading to us about a million years ago – long before the paths of modern man and Neanderthal diverged.

25.03.2010
New in Gerontology

Old man's memory: alignment with the best!

A new approach to the study of age–related memory changes – the study of the brain of people who have retained a good memory until old age - will make it possible to establish what exactly allows such people to avoid senile senility.

25.03.2010
Prolonging youth

The causes of facial aging are much deeper than wrinkles

Botox and skin tightening are not enough to rejuvenate the face at all, since the metamorphoses that occur with aging are due to significant changes in the shape of the facial bones, especially the lower jaw.

25.03.2010
New in Gerontology

The "invisible hat" will not allow Alzheimer's disease to develop?

Microglia – immune cells of the nervous system – destroys neurons in the brains of mice suffering from Alzheimer's disease, under the influence of signaling proteins synthesized by the neurons themselves. It remains only to learn how to block these signals.

24.03.2010
Biomedicine

miRNA-filled Nanoparticles for Cancer treatment

During the first clinical studies using a complex of nanoparticles and small interfering RNAs, researchers were able to successfully block the expression of the target gene in cancer cells.

23.03.2010
Other life sciences

Proteins from non-natural amino acids: the beginning of the path

A new direction of synthetic biology is the creation of fully "customizable" proteins. The ribosome, which reads not three, but four nucleotides at a time, allows the use of more than 250 non-natural amino acids for the design of biopolymers.

23.03.2010
Prolonging youth

Grandma next to Grandpa... in the computer lab!

The St. Petersburg Association of Disabled People, Veterans and Blockade Workers implements on a voluntary basis a social project of free computer literacy training for elderly people "Grandma-Online", "Grandpa-OnLine".

23.03.2010
Nanotechnology

Nanochip is reporting from a living cell

Nanochips that do not disrupt the work of the cell can serve as sensors that transmit information about what is happening in the cytoplasm, which means they can provide a huge service to scientific research and medicine.

23.03.2010
Other life sciences

Cells hanging in a magnetic field feel at home

Cell culture grows much better in a three-dimensional matrix than on a flat surface of a Petri dish. But instead of using a porous gel, magnetic nanoparticles can be introduced into cells and suspended in the thickness of the nutrient medium using a magnet.

22.03.2010
Cellular technologies

Microchimerism: alien cells among their own

However, there are probably very few foreign cells in our body – according to estimates, about one in a million. Therefore, researchers have come up with a special name for the phenomenon – microchimerism.

22.03.2010
Cellular technologies

The world's third trachea made of stem cells

To create new airways, a donor trachea was used, purified to a collagen base, on which stem cells obtained from the bone marrow of a small patient were applied.

22.03.2010
Genetic engineering

Production of biological products: the future belongs to algae!

In some cases, it makes no sense to change proven, effectively working systems for the synthesis of biological products with the help of bacteria and yeast. However, the extreme profitability of algae compared to mammalian cell lines is obvious.

22.03.2010
Other life sciences

Sperm Races: live video report

Scientists have developed a new, extremely effective method for studying the processes of competition between spermatozoa that have entered the female body – they observe what is happening live.

22.03.2010
Genetics

The individuality of a person: not just genes

Non-coding sections of DNA control the activity of genes and play an equally important role in determining such individual characteristics as a person's appearance, his development and even predisposition to certain diseases.

22.03.2010
Genetic engineering

Mosquitoes – carriers of the vaccine

Japanese scientists with the help of genetic engineering have turned mosquitoes from carriers of a dangerous tropical disease into live syringes with a vaccine against leishmaniasis.

19.03.2010