Life Sciences

Found results: 11545

Other life sciences

Take care of your great-grandchildren!

For the viability of a descendant, it is important at what age his father gave birth to him, his father's grandfather, and grandfather's great–grandfather. Perhaps this effect has a genetic nature: fitness decreases due to the accumulation of mutations over several generations.

29.06.2015
Nanotechnology

Nanostructured hydrogel of prolonged action

Dextran hydrogel makes it possible to extend the half-life of hepatitis C drugs by 10 times. This enhances their therapeutic effect, and also allows the patient to inject less often.

29.06.2015
Genetic engineering

Discussion about GMOs

Transcript of an open discussion held by the Initiative Group "Think" on June 10, 2015 in the great hall of Kazan Federal University.

29.06.2015
Nanotechnology

Nanorobots-tadpoles

Nanorobots, capable of moving quickly and easily in liquids even more viscous than blood and delivering drugs precisely to the target, are controlled by an alternating magnetic field that causes them to bend and move like tadpoles.

29.06.2015
Other life sciences

"Robot avatar" for paraplegics

Scientists from the Federal Polytechnic School of Lausanne presented the result of their long-term project to create a remotely controlled mobile robot, which can be commanded using the "power of thought".

26.06.2015
Prolonging youth

Unexpected side effect

An international group of molecular biologists has found out that trametinib, a drug for the treatment of melanoma, prolongs the life of fruit flies by 12% due to its effect on genes responsible for the rate of metabolism and aging.

26.06.2015
Other life sciences

Advanced heart-on-a-chip

The new device will allow you to reproduce a more accurate model of the processes occurring in the human body. The authors do not plan to commercialize the technology they have developed and will make it available to all interested parties in the near future.

25.06.2015
Other life sciences

Absolutely safe sex

The idea of British schoolchildren – condoms that can change their color depending on which sexually transmitted infection they had to deal with – is already being dealt with by a British company that produces contraceptives.

25.06.2015
Nanotechnology

Insulin patch instead of subcutaneous injections

Covered with tiny microneedles, the patch mimics the work of beta cells and releases insulin in proportion to the level of glucose in the blood. This avoids not only painful injections, but also eliminates the risk of hypoglycemia.

24.06.2015
Biomedicine

Myocardium, heal yourself

Using the natural communication capabilities of the body, biologists were able to give the heart a command to heal after a heart attack.

24.06.2015
Cellular technologies

Thrombosis-on-a-chip

The study of thrombosis on a model of the circulatory system will help pharmaceutical companies come up with more effective ways to treat diseases such as deep vein thrombosis, without harming living beings.

24.06.2015
Biomedicine

Breast cancer: prolactin vs. ketosteroids

"Stress hormones", which are prescribed to women with breast cancer during chemotherapy, not only help to endure pain, but also reset the effect of treatment. Another hormone, prolactin, can neutralize their effect.

24.06.2015
Theories of aging

Evolution doesn't need "longevity genes"

Interview with chemist Mikhail Shchepinov about the phenomenon of aging, theories explaining this process, and the goals of evolution.

23.06.2015
Genetics

Why does DNA need a fifth letter?

Geneticists have found in the DNA of mice a special subspecies of one of the four "letters"-nucleotides, which plays a special regulatory role in the work of the genes in which it is contained, and claims to be the fifth member of the genetic alphabet.

23.06.2015
Other life sciences

Solar storms hit joints and blood vessels

Scientists have found that there is a statistically significant relationship between the spread of rheumatoid arthritis, giant cell arteritis and cycles of solar activity.

23.06.2015
Theories of aging

The unsolved mystery of centenarians

Despite the increasing intensity of the search for the causes of longevity every year, the researchers have not found an answer to the question "Why do some people live 115 or even 120 years?".

22.06.2015
Genetics

Heredity versus environment

A large–scale meta–analysis (for 14.5 million pairs of twins) showed that, on average, each trait or disorder is caused by genes and environment approximately equally (49% of the variability is due to genes, about 51% is due to environment and/or measurement errors).

22.06.2015
Nanotechnology

Nanotechnology in medicine: Part 1

Modern knowledge about the behavior of materials at the "nano" level is compared with the tip of the iceberg and the embryonic stage. Active research in this area is only a few decades old.

20.06.2015