Life Sciences

Found results: 11545

New in Gerontology

Another "centenarian gene"

Spanish biologists have discovered several variants of the APOB gene that help a person live up to a hundred years or more. The work of this gene is associated with lipid metabolism, and due to its special variant, little "bad" cholesterol is formed in the body.

26.08.2014
Genetic engineering

Yeast instead of poppy

In order for yeast to produce opioids, scientists added five genes to their genome: three from the genome of the poppy, and two more from bacteria that live on poppy plantations.

26.08.2014
Genetics

Stem cell differentiation: genome hotspots

The world places great hopes on stem cells, expecting that they will revolutionize medicine. But to use their potential, you need to understand how their development is regulated. New ideas are put forward by scientists from the University of Southern Denmark.

26.08.2014
Prolonging youth

Rejuvenation of the immune system

Scientists from the UK and Spain have studied the relationship between immunity and aging processes, and have also developed special drugs to slow down the aging of cells of the immune system.

25.08.2014
Bioethics

Euthanasia tour

The number of "suicide tourists" coming to Switzerland for the purpose of euthanasia doubled in four years, from 2009 to 2012. Such data are given in a scientific paper devoted to the study of the phenomenon of "suicide tourism".

22.08.2014
New in Gerontology

Why don't old people sleep well?

American scientists have explained why older people suffer from insomnia and often wake up ahead of time. Brain magazine reports on a group of inhibitory neurons, the deficiency of which leads to sleep disorders in the elderly.

21.08.2014
Nanotechnology

DNA sequencing: molybdenum disulfide instead of graphene

Scientists at the University of Illinois at Urbana-Champaign have found that molybdenum disulfide can make DNA sequencing using nanopores more accurate, faster and cheaper than any other material available today.

21.08.2014
Biomedicine

Helminthotherapy of autoimmune diseases

Australian researchers have managed to isolate specific proteins from the secretory glands of some species of parasitic worms, with the help of which helminths suppress the activity of the host body's immune system.

21.08.2014
Cellular technologies

Hematopoietic stem cells against stroke

In the UK, for the first time in the world, a clinical study of the treatment of acute ischemic stroke with hematopoietic stem cells isolated from the bone marrow of patients was conducted.

21.08.2014
Other life sciences

How to feed your microflora?

Bacteria living in the gastrointestinal tract can influence the host's eating behavior. This hypothesis was put forward by American scientists based on a review of a large number of independent studies.

20.08.2014
Other life sciences

Sweat and charge the batteries

A small electronic tattoo is attached to a person's body and monitors the state of his health during physical training. The device will be powered by the decomposition of lactic acid released with sweat during intense loads.

20.08.2014
Biomedicine

How to grow a new bone

A framework of dozens of layers of biodegradable polymer, as it is destroyed at a given rate and in the required amount releasing growth factors, allows for two weeks to restore large defects of bone tissue.

20.08.2014
Genetic engineering

Another success of gene therapy

Gene therapy has taken a step towards the treatment of beta-thalassemia and other diseases caused by a mutation in a single gene. Scientists obtained iPSCs from the patient's cells, edited their genome and forced them to differentiate into blood cells.

19.08.2014
Nanotechnology

Nanorobots with a spiral motor

A group of Israeli and German researchers managed to create a nanomotor, which is not only the smallest in the world, but also due to its spiral shape allows nanorobots not to get entangled in protein molecules.

19.08.2014
Cellular technologies

The current model of brain tissue

The three-dimensional model, similar in structure and function to the tissue of the rat cerebral cortex, remains viable in laboratory conditions for a long time.

19.08.2014
Genetics

The advantage of heterozygotes

Sometimes a recessive mutation in homozygotes (organisms with two copies of the mutant gene) causes disease, and heterozygotes (with one copy) allows them to better adapt to living conditions.

18.08.2014