Gerontology

Found results: 1302

Theories of aging

Evolution of sexual dimorphism in human lifespan (literature)

Why do humans live longer than other higher primates? Why do women live longer than men? What is the significance of menopause? The answers to these questions could explain the mechanisms underlying the evolution of human aging.

10.10.2014
Theories of aging

Evolution of sexual dimorphism in human lifespan (4)

Understanding the biological basis of sex differences in life expectancy will help in the development of interventions that can extend the period of healthy life of men for several years.

10.10.2014
Theories of aging

Evolution of sexual dimorphism in human lifespan (3)

If longevity is the result of the evolution of men, why do women live longer? In this case, the pronounced sexual difference in human reproductive models provides a plausible explanation: a large variability in the number of offspring in men.

09.10.2014
Theories of aging

Evolution of sexual dimorphism in human lifespan (2)

According to the patriarchal hypothesis, the longevity of women is the result of inheritance of autosomal (non-sexual) genetic determinants of longevity, the selection of which occurs in the chromosomes of men.

08.10.2014
Theories of aging

Evolution of sexual dimorphism in human lifespan (1)

Why do humans live longer than other higher primates? Why do women live longer than men? What is the significance of menopause? The answers to these questions could explain the mechanisms underlying the evolution of human aging.

07.10.2014
Theories of aging

A reasonable man liberated

Vladimir Skulachev is a scientist the whole world knows. And at the same time, he is a dissident in science, who decided to challenge not only colleagues, but also the fundamental limitations of human nature – aging and death.

02.10.2014
New in Gerontology

Does brain aging begin in the vascular plexuses?

The authors of the work, published recently in the journal Science, found out what the aging of the brain is expressed in. They even suggested a way to scroll back in time.

02.10.2014
Prolonging youth

Skulachev ions for vascular rejuvenation

In elderly (24 months) mice treated with SkQ1 for 8 months, the concentration of molecules triggering inflammation decreased in the aortic endothelium. The level of one of the four markers of inflammation was equal to the same indicator in young animals.

01.10.2014
New in Gerontology

With age, the brain "shrinks"

The volume of the human brain gradually increases until about 40 years old, after which it begins to slowly decrease and by the end of life approximately corresponds to the size of the brain of a 7-year-old child.

23.09.2014
New in Gerontology

Intelligence and aging

Scientists have come to the conclusion that intensive intellectual activity and high IQ have different effects on the life expectancy of men and women: the "strong sex" rejuvenates, and the "weak", on the contrary, ages.

16.09.2014
Theories of aging

Adapt or die

On the one hand, there is a lot of evidence in favor of the fact that aging is the result of evolution, which appeared under the pressure of natural selection. On the other hand, there is a theoretical argument that raises doubts about the reality of this scenario.

11.09.2014
Prolonging youth

Methods of immune rejuvenation

There is a lot of information on this issue, and now scientists give an encouraging answer to the question "Is it possible to rejuvenate the immune system?".

10.09.2014
Prolonging youth

Aging can be slowed down with "remote access"

Activation of the AMP-dependent kinase gene in key organ systems of drosophila (in any case, only in the brain or only in the intestine) slows down the aging of the entire organism. At the same time, the life expectancy of flies increased by 30%, and they maintained good health until later in life.

09.09.2014
New in Gerontology

Why age reduces the ability of muscles to recover

The age-related decrease in the ability of muscle tissue to regenerate is due to an increase in the activity of the signaling mechanism that suppresses the symmetrical division of stem cells.

08.09.2014
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
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
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