Life Sciences

Found results: 11545

Other life sciences

How to connect to the brain

How far can science go in developing brain-machine interfaces? Will we be able to inject any information directly into the brain, as if this organ were a giant flash disk?

02.03.2009
Biomedicine

Nanotechnology in medicine: successes and prospects

Recently, nanotechnology has been increasingly being introduced into many areas of human activity. This trend has not bypassed medicine. Today, macromolecules and artificially prepared particles are used for the diagnosis, treatment of various diseases and restoration of damaged tissues. The new direction was called nanomedicine. Russian scientists have achieved considerable success in this field.

02.03.2009
Other life sciences

Injustice, dirt and bitter food cause the same reaction

Maybe impurity and injustice are processed by the brain separately and just trigger the same reaction – the same one that automatically provokes a bitter taste. Or maybe the body has adapted the same evaluation system for processing moral stimuli as for hygienic stimuli.

02.03.2009
Prolonging youth

Immortality for nothing

"I believe that we will be able to defeat aging in the near future. There is a 50 percent chance that the person who will be the first to live to 150 years old is already living, and he is now 60 years old," di Gray said on Saturday at a meeting with journalists in Moscow.

02.03.2009
Other life sciences

The most famous medical experiments on yourself

History knows a lot of doctors who got sick while doing their duty. But there were also those who deliberately infected themselves or harmed themselves in order to test the hypothesis by experiment.

26.02.2009
Cellular technologies

Stem cells: the present and the near future

Most likely, the breakthrough in advanced medicine associated with stem cells predicted in the next decade will be based not on embryonic, but on the so–called induced pluripotent stem cells (iPSCs, from Induced Pluripotent Stem Cell) - ordinary differentiated mature cells reprogrammed into a state of pluripotence.

25.02.2009
New in Gerontology

Peroxide in the beard

First gray, and then white hair is the result of the accumulation of hydrogen peroxide in the hair follicles. By old age, the amount of peroxide in each hair can be measured in milligrams, that is, it makes up a significant fraction of the hair mass.

24.02.2009
Genetics

A small mutation of one gene has huge consequences for the whole person

The replacement of just one nucleotide base in the regulatory part of the gene encoding the muscarinic receptor M2, sensitive to the mediator of the nervous system acetylcholine, affects the number of such receptors and, by changing the tone of the parasympathetic nervous system, affects intelligence, social status, health and life expectancy.

24.02.2009
Other life sciences

The place of biology in the hierarchy of sciences

Biology – the science of life and living objects – traditionally belongs to the complex of natural sciences and is usually considered along with the main ones – physics and chemistry. But even with the most superficial comparison, some features of biology attract attention, distinguishing it from a number of natural science disciplines.

24.02.2009
Cellular technologies

Stem cells from endometrium and menstrual blood: a Russian priority

Despite the fact that there was information in the media that researchers from Japan and the USA first proposed to obtain stem cells from the endometrium of the uterus and menstrual blood, in fact, Russian specialists were the "pioneers" in this matter.

20.02.2009
Prolonging youth

Cancel aging: how and why

Aubrey De Grey: from what we know about aging today, we can identify seven key points and try to influence these "weak links". This is my "Strategy for Achieving Negligible Aging by Engineering Methods" (SENS). The goal is to create a technology accessible to every person, with the help of which it is possible to restore the body to any degree of rejuvenation and maintain it in this state for any time.

20.02.2009
Theories of aging

Free radical theory of aging: new data against

Over the past forty years, the free radical theory of aging has dominated official science, explaining age-related changes by the action of reactive oxygen species on cellular structures. However, experimental data are gradually beginning to appear, proving the absence of a link between oxidative stress and aging.

19.02.2009
Cellular technologies

Stem cells were inherited in tumors

Scientists have described a case of tumor development in the spinal cord and brain of a boy after fetal cell transplantation. It is not known whether the appearance of the tumor was caused by stem cell transplantation or whether the cells migrated to the emerging tumor, but the number of wary public will clearly increase, and opponents of stem cells will undoubtedly raise this case to the banners.

19.02.2009
Nanotechnology

Nanotechnology will be sent to fight cancer

When the drug changes its shape and properties, the dose is reduced tenfold, side effects are sharply reduced, at the same time, the clinical therapeutic effect is preserved for this type of drug and for this type of tumor. The tumor is treated as effectively as with conventional drugs today.

19.02.2009
Nanotechnology

Nanotechnology: answers to questions

The dean of the Faculty of Materials Sciences, Head of the Department of Inorganic Chemistry of the Chemical Faculty of Moscow State University, one of the organizers of the Nanotechnology Society of Russia, academician Yu.D.Tretyakov answered the questions of readers of <url>.

18.02.2009
Other life sciences

A DNA sketch?

This revolutionary method has already been tested and recognized as effective. Thanks to the new technology, it was possible to make a sketch of serial killer Derek Todd Lee based on DNA analysis, who was eventually identified and captured.

17.02.2009
Nanotechnology

Titanium endoprostheses: made in Russia

Scientists from the N.F.Gamalei State Research Institute of Epidemiology and Microbiology invent a fundamentally new implant. It uses both titanium, specially manufactured at an aviation plant, and stem cell growth factors.

16.02.2009
Other life sciences

Masters of Titanium Skeletons

Russian materials scientists create implants for orthopedics using unique titanium and alloy processing technologies. Almost all products go abroad, they are almost not in demand in Russia.

16.02.2009
Biomedicine

Metabolomics against cancer

The term "metabolomics" is not yet as well known as genomics, the study of genes, or proteomics, the study of intracellular proteins. The study of prostate metabolites allowed us to find a marker with which it may be possible to detect prostate cancer by urine analysis.

13.02.2009