Life Sciences

Found results: 11545

Other life sciences

20 new biotechnical breakthroughs that will change medicine

From the saliva test for cancer to the injection that restores the nerves of the spinal cord, all these advances in medicine blur the line between biology and technology in order to restore human health, improve and prolong his life.

21.04.2009
Biomedicine

To treat brain cancer, nanoparticles were stuffed with scorpion venom

The fact that scorpion venom is able to fight the spread of cancer cells has been known for a long time (however, the best indicator did not exceed 45%). To increase the effectiveness, the active substance chlorotoxin (chlorotoxin) was combined with nanoparticles, which led to the "stopping" of 98% of cells.

21.04.2009
Other life sciences

Laser instead of scalpel

According to scientists, the surgical instrument of the future – the femtosecond laser, which Russian physicists and ophthalmologists are working on now, is already on the way. It's just right to call it the perfect scalpel. After all, he is able to work where it is necessary, without damaging the tissues located outside.

20.04.2009
Other life sciences

What is evidence-based medicine?

Evidence-based medicine postulates that a drug, a method of treatment, a diagnostic method can be used only when it has proven its feasibility. One of the main principles of evidence–based medicine is the so-called "blinding" of research. At the same time, neither the patient himself, nor the doctor, nor the statistician who calculates the result, do not know what the patient receives: a drug or a placebo.

17.04.2009
New in Gerontology

Alzheimer's disease: early diagnosis and treatment prospects

Measuring the level of beta-amyloid protein and tau protein in the cerebrospinal fluid allows you to accurately predict the likelihood of developing Alzheimer's disease. And as a result of taking an experimental drug, the SAP protein disappeared in the brain of patients, which, according to doctors, is one of the causes of Alzheimer's disease: it protects amyloid plaques from recognition by the immune system.

16.04.2009
Cellular technologies

Myths and Truth about Stem Cells

There are many charlatans in Russia, including those who do not specifically indicate what kind of stem cells they use. Or they are called incorrectly: they take cells from abortive material and call them embryonic. But, believe me, there is nothing in common between them and ESK. And such "doctors" are no better than spellcasters, and they fool people well, especially in cosmetology.

15.04.2009
Genetics

Replacing one nucleotide increases fertility

One of the polymorphisms in the cystic fibrosis gene is a single nucleotide replacement in the DNA sequence, as a result of which alternative amino acids - either valine or methionine – appear in a certain position in the synthesized protein. The presence of valine correlates with a relatively larger number of children than the population average.

15.04.2009
Other life sciences

MSU Interfacult Project: Human Institute

The Institute of Man is rather a virtual education, an intellectual club that will unite the efforts of all faculties of Moscow State University, directly or indirectly studying man.

13.04.2009
Genetics

Chromosome quirks: a girl with the XY karyotype

Carried out at the stage of embryonic development and repeated karyotypic analysis conducted after childbirth did not reveal any abnormalities in the structure of any of the 46 chromosomes, the list of which ended with an XY pair. But there was clearly a girl in front of the doctors.

13.04.2009
Biomedicine

Egg doublers

Researchers from the Chinese Jiaotong University managed to find diploid stem cells in adult ovaries that can form oocytes, and even get healthy mice from these eggs.

13.04.2009
Nanotechnology

Nanolestnik for sorting nanoparticles and biomolecules

Devices that would be able to separate nanoparticles and even individual molecules by size have been created over the past few years. An easy-to-manufacture device for size separation of nanoparticles and large biomolecules suspended in a liquid was created by specialists from the National Institute of Standards and Technology and Cornell University

10.04.2009
Other life sciences

Brown fat was found in adults

This is a powerful impetus to the development of numerous projects dedicated to the role of brown adipose tissue in the prevention of obesity and the following metabolic syndrome. These studies cannot be called unpromising: unlike the more common counterpart, which is deposited under the skin, in the omentums and capsules of internal organs, brown fat instead of storing energy burns it in large quantities, releasing heat.

10.04.2009
Nanotechnology

German nanotechnologists are invited to Russia

In his report "Nanotechnology: Innovations at the point of contact between government and business", the CEO of RUSNANO called on Germany to cooperate with Russia, calling the possibilities of such cooperation unique.

10.04.2009
Genetics

Human evolution: not stopping, but accelerating

Natural selection in some populations and entire nations, for example, by hereditary propensity to a certain type of diet or by IQ, is a proven fact. The evolution of man did not stop with the emergence of civilization. Perhaps it has even accelerated and is in full swing now.

10.04.2009
Biomedicine

The first Russian gene-therapeutic cancer drug is being prepared for clinical trials

Scientists have used a "killer gene" that is embedded in a cancer cell and turns the usual antiviral drug ganciclovir into a poison that is fatal to this cell. Ganciclovir can also be injected into the body in tablets or as an injection. The main thing is that the gene is like a virus: it is able to infect neighboring tumor cells without touching the usual ones.

10.04.2009
Other life sciences

Racing against gene doping

About the development of methods for detecting gene doping – drugs that are not yet used as doping, but may be used in this capacity in the near future, and FAQ about doping in general.

08.04.2009
Biomedicine

Hunting for the papilloma virus

If the genome of the papilloma virus is embedded in the cell chromosome, then in the presence of predisposing factors, the virus begins to multiply. The affected area turns into a papilloma, or wart. And if the virus belongs to a special subtype, then in ten years the affected cells may transform into a cancerous tumor.

08.04.2009
Biomedicine

Fracture prevention and treatment of osteoporosis: slow down osteoclasts!

The bones of mice lacking the CCR2 receptor are 40% less porous than those of "non-defective" mice, which leads to a 47% increase in strength. Moreover, this is achieved precisely by slowing down the work of osteoclasts, and not by accelerating the synthesis of new tissue. The near future will show whether this phenomenon will become the basis for the development of a new method of treating osteoporosis and preventing fractures.

08.04.2009