Life Sciences

Found results: 11545

Genetics

The Age of DNA

The book "The Age of DNA" helps to understand what a DNA molecule is — the basis of the foundations of the origin of life. We suggest reading one of the chapters of the book in an abbreviated version.

04.05.2008
Biomedicine

Oncology techniques

Cancer stem cells, vegetable fats and prostate cancer, early diagnosis of lung cancer by oral epithelium... In oncology, something new and promising is being discovered every day.

29.04.2008
Genetics

The mysteries of the fifteenth chromosome

In a certain section of the 15th chromosome, several patients showed giant deletions, up to a million nucleotides. All of them had mental underdevelopment in combination with epilepsy or abnormal brain activity.

28.04.2008
Other life sciences

Money was deposited in the brain

American and Japanese neurophysiologists have studied the brain's response to two of the most famous and powerful stimuli – money and power. It turned out that both factors are "projected" into one part of the brain – the striatum.

25.04.2008
Biomedicine

Biomedicine News

Another review of the latest achievements in various fields of biomedicine from the Voice of America.

25.04.2008
Prolonging youth

Chemical youth

Studies by Castren and his colleagues give serotonin reuptake inhibitors a second youth, due to the fact that these substances restore youth to brain cells.

24.04.2008
Cloning

British scientists have created a hybrid of a human and a cow

They took an egg from a cow, removed the nucleus from it and placed a nucleus taken from a human skin cell in this cell envelope, and after three days they stopped the experiment. The largest hybrid preembryon consisted of 32 cells.

23.04.2008
Other life sciences

Bionic eye restores blind vision

Surgeons implanted "bionic eyes" to two men who became blind as a result of retinitis pigmentosa, and partially restored their vision.

23.04.2008
Genetics

Why do we need "unnecessary" genes

If a gene becomes unnecessary, then it should quickly fail under the influence of random mutations that are not eliminated by selection. But how to explain the high evolutionary stability of many of these genes?

22.04.2008
Cellular technologies

Neurons are treated by fusion

In response to chronic inflammation signaling the disease, blood stem cells rush into the brain and merge with one of the types of neurons 100 times more intensively than previously thought.

22.04.2008
Other life sciences

Mustard instead of doping?

Blood doping and the administration of synthetic erythropoietin are prohibited by all sports governing bodies. Perhaps in the future, the desired results can be achieved by exposing the skin of athletes to air with a low oxygen content, or by increasing skin blood flow.

22.04.2008
Prolonging youth

Another touch to the connection of fasting with life expectancy

The increased production of Gcn4 in the cells of long-lived yeast strains in combination with its need for an increase in life expectancy associated with fasting makes this protein an important factor in the mechanism of life extension that has been actively studied recently.

22.04.2008
Cloning

The Cloning Revolution, stage 2

Revolutionary cloning technology will be used in desperate attempts to save one of the rarest animals on Earth – the northern white rhinoceros, which is on the verge of extinction.

21.04.2008
Prolonging youth

Youth lasted until death

SkQ1 does not give immortality, but gives "eternal youth" within the normal or slightly increased lifespan.

21.04.2008
Biomedicine

Diagnosis of diseases by saliva: details and comments

Every day, the technologies of laboratory and functional diagnostics are supplemented with new techniques that allow you to quickly detect diseases at an early stage. Perhaps, in the future, people will be tested not for blood, but saliva.

16.04.2008
Bioethics

Doctors will be offered amulets

Every year there is less and less pharmacoeconomics at the symposium, and propagandists of poorly proven technologies are lining up under the slogans of "evidence-based medicine". Visitors of the congress are invited to purchase various amulets, zirconium bracelets and other occult accessories, of which more and more appear on the stands every year.

15.04.2008
Biomedicine

Vaccination saves lives

Scientists were faced with the task of creating an effective vaccine against the human papillomavirus, and therefore against cervical cancer. And they were created: Gardasil quadrivalent vaccine and GlaxoSmithKline bivalent candidate vaccine.

15.04.2008
Other life sciences

The kitchen river grows greens and fish for the table

In the aquarium "Local River" everything should be balanced in such a way that both fish and vegetables are good. And the owner of the Local River, too: he will be able to produce food for himself right on the kitchen table. In what quantity is another question.

15.04.2008
Cellular technologies

The reference cell

The attitude of the resolving organs to the problem of stem cells is cautious. But it will be so only until the moment when there is no serious breakthrough in stem cell research associated with the real success of new treatment methods.

14.04.2008