Life Sciences

Found results: 11545

Theories of aging

Another aging mechanism has been identified

The data, according to which the aging process is closely interrelated with the violation of the structure of heterochromatin, indicate a new promising direction in the development of methods for the prevention and treatment of age-related diseases.

07.05.2015
Other life sciences

How are obesity and hypertension related?

Hypertension in overweight rats occurs because the arginase enzyme does not work correctly in their body, which destroys the main source of nitric oxide molecules that help dilate blood vessels.

06.05.2015
Other life sciences

Trachea from the printer

A group of scientists from the Mount Sinai School of Medicine (New York) for the first time managed to print a miniature tracheal skeleton made of biodegradable polymers on a bioprinter.

06.05.2015
Other life sciences

How a heart attack kills a person

Russian scientists from Moscow State University together with colleagues from Ireland were able to clarify the mechanisms of ischemia characteristic of a heart attack.

06.05.2015
Biomedicine

Immunity against cancer

Immunotherapy has opened up a whole new opportunity for cancer treatment along with chemotherapy, radiation therapy and surgery.

06.05.2015
Genetic engineering

The effect of gene therapy for blindness may be temporary

Three research groups reported contradictory results of gene therapy for a rare form of hereditary blindness – Leber's amaurosis: in some, the effect was "long-lasting", while others registered a gradual deterioration in the condition of patients.

05.05.2015
Other life sciences

About bioinformatics and molecular evolution

Three weeks before his speech at the Central House of the Journalist, Mikhail Gelfand spoke about the difficulties of bioinformatics and biologists in Russia, as well as about the modern possibilities of studying evolution.

05.05.2015
Other life sciences

We change any blood group to the first

Canadian biochemists using the method of directed evolution have created an enzyme that is more than 170 times more effective than its natural counterpart, "turning" all blood groups into the first.

30.04.2015
Other life sciences

FOXO1 is the culprit of diabetic ulcers

The reason for the slow healing of wounds in diabetics turned out to be that the protein "conducting" the process of wound tightening, with an abnormally high concentration of glucose in the blood, "goes crazy" and begins to interfere with their healing.

29.04.2015
Other life sciences

Appetite regulator – melanocortin-4 receptor

American biologists have found a group of neurons in the brain that encodes signals of hunger and satiety, and found out how it can be reconfigured to deprive a mouse or a person of hunger.

29.04.2015
Genetics

When the dog fertilizes the grass…

Fines for dog feces left on the street are very large, but this measure has not been effective enough. Now the excrement of dogs will be sent for DNA analysis. Thus, the authorities intend to fight against unscrupulous owners of animals

29.04.2015
Genetics

How to organize genomic data

A new technique for processing very large arrays of NetWAS data increases the power of genome-wide association studies and makes it possible to identify genes whose mutations underlie complex human diseases.

29.04.2015
Biomedicine

Personalized cancer therapy: a search for options

An implant the size of a grain of rice will allow you to inject up to 30 different medications into the tumor in small doses and quickly choose the best treatment option in a particular case.

28.04.2015
Nanotechnology

How safe are upconversion nanoparticles?

MIPT scientists and their colleagues from Moscow, Nizhny Novgorod, Australia and the Netherlands conducted the first systematic study of the safety of so-called upconversion nanoparticles in the treatment of skin cancer and other skin diseases.

28.04.2015
Other life sciences

The new artificial retina is 5 times better than the existing ones

Tests on rats showed her ability to achieve visual acuity equivalent to 20/250 according to the Snellen table. Such an indicator is considered a serious visual impairment, but the best of the existing bionic eyes provide a value of about 20/1200 – this is almost complete blindness.

28.04.2015
Prolonging youth

I will live a century and a half

Alex Zhavoronkov, director of the British company Biogerontology Research Foundation, wants to prove that he is able to live up to at least one and a half hundred years.

27.04.2015