Life Sciences

Found results: 11545

New in Gerontology

Aging options: a slice of the evolutionary tree

Getting old is not necessarily becoming decrepit and waiting for the last breath. Scientists have found animals that only get stronger with age and can be considered immortal.

09.12.2013
Other life sciences

Human evolution: the more we know…

The new success of geneticists – deciphering the mitochondrial DNA of a hominin that lived on the territory of present–day Spain 300-400 thousand years ago - further confused the human pedigree.

06.12.2013
Other life sciences

Man and his microbes: we are together!

In the body of an adult, on average, there are ten times more bacteria than our own cells. In fact, bacteria form a full-fledged organ in our body.

06.12.2013
Cellular technologies

Transdifferentiation – direct reprogramming of cells

Some cells can be transformed into others without an intermediate stage in the form of induced stem cells, simply by turning on the synthesis of one of the regulatory proteins that monitor the activity of genes.

06.12.2013
Biomedicine

Caries prevention: eat candy!

The amount of Streptococcus mutans, one of the main "corroders" of tooth enamel, fell in the oral cavity of volunteers who ate several sweets daily with Lactobacillus ragasei bacteria killed by heating.

04.12.2013
Biomedicine

The end of the AIDS pandemic?

The newly developed synthetic molecules inhibit the release of HIV genetic material from the nucleus of an infected cell into the cytoplasm, thus, virus replication is blocked and avoids infection of other cells.

04.12.2013
New in Gerontology

Cell aging is the biggest risk factor for cancer

In old age, the cause of the development of malignant tumors may be not so much mutations as the loss of aging cells of the mechanism that causes them to stop dividing.

04.12.2013
Other life sciences

Cardiomyocytes recover, only slowly and low

A few years ago, the regenerative capacity of the mammalian heart was considered almost zero. However, scientists now know that heart muscle cells are constantly regenerating, albeit at a very low rate: only one to four percent of cells are replaced in the heart muscle every year.

03.12.2013
Other life sciences

Separate collection of mitochondrial debris

For more economical and efficient use of mitochondria, cells collect damaged mitochondrial proteins in a single mitochondria, which is then sent for disposal.

03.12.2013
Other life sciences

Drink, yes FOXO3 understand!

The transcription factor FOXO3 helps protect the liver from the damaging effects of alcohol.

03.12.2013
Cellular technologies

Stem cell lungs: the first step has been taken

Scientists from Columbia University Medical Center have managed to obtain functioning lung and respiratory tract cells from human stem cells for the first time.

03.12.2013
Other life sciences

Another danger of cholesterol

The causative agent of breast cancer is a cholesterol metabolite, which increases the aggressiveness and activity of the tumor, acting on it in the same way as the hormone estrogen.

02.12.2013
Genetics

"Ancestral memory" found in mice

Epigenetic inheritance through generations is quite common in plants, but much less common in animals. Researchers from Emory University have shown the epigenetic mechanism of memory transmission through a generation of mice – from grandfathers to grandchildren.

02.12.2013
Genetics

FDA vs. 23andMe: Details

The dispute between 23andMe and the FDA, in fact, boils down to the question of whether it is worth giving people free access to their genetic data or whether they are so dangerous that it is better to leave this right only to specialists.

02.12.2013
New in Gerontology

Alzheimer's disease: good news

According to the results of a new study, currently the risk of developing Alzheimer's disease and associated senile dementia is lower, and the first symptoms of the disease appear later than 20 years ago.

02.12.2013