According to the UN report, the number of people in the world over 60 years will increase from 670 million in 2005 to 2 billion in 2050.This applies not only to developed countries, where the problem of aging today is quite acute, but also developing countries.Global aging confronts mankind are many intractable problems.
In 2005, among all workers in the world (from 15 to 64 years of age) accounted for less than a fifth of a group of 50 to 64. It is expected that by 2050 the age group older than 50 years will have one quarter of the workers in the world, and almost one third indeveloped countries.
UN does not consider that a program to increase the birth rate and migration of the working age population from developing to developed countries solve the problems of aging nations.In order to maintain the current pace of economic development is necessary to increase the involvement of women's work and dramatically increase productivity.
also one of the main problems is the increase in the working-age perso
In particular, it is necessary to extend the "life" of human bones that become brittle with age and vulnerable to serious damage.
According to studies conducted in the United States, 44 million Americans, including half of all people over the age of 50 years are at risk of osteoporosis (osteoporosis) - a disease associated with damage (thinning) of bone tissue.
Bones become thinner with age, becoming less robust and resilient.Approximately 35 years after leaching of calcium from bone is more intense than its deposition in bone.This is common to all people, so the aging of humanity will take the global nature of the problem.The worst affected by the disease older women.In the United States exposed to the risk of the disease every second woman and every fourth man older than 50 years.Worldwide studies are devoted to various methods of treatment of the disease.
American scientists from the University of Florida (Florida State University) received a grant from the Department of Defense to develop a new technology of restoration of bone tissue damaged by disease or injury.Interest Pentagon is clear: first of all interested in the possibility of a full-fledged war rehabilitation after injury, but research can benefit the whole of mankind.The size of the grant allocated for the four years is 840 thousand dollars.
the University of Florida for several years, are studies, which aim to complete the cultivation of bone tissue from adult stem cells of the patient.Touch tissue grown from the so-called human mesenchymal stem cells (Numan mesenchymal stem cells).Typically, these cells are taken from bone marrow.Scientists have constructed a bioreactor, wherein the stem cells are capable of developing into any tissue, are grown on a three-dimensional structure.Very three-dimensional structure works as scaffolding, and various methods of exposure of cells to allow you to specify the direction of the desired tissue and grow.An artificial tissue "grafted" onto the damaged areas of the patient's bone.Since tissue develops from the cells of the patient, it is not rejected by the immune system and the healing process takes place more efficiently than in cases where the bone is taken from a donor or a cadaver.
Professor Mei Teng (Teng Ma) said: "No need to wait, that the artificial tissue appears in a year.Stem cell research is still at a very early stage, and we have a long way to go before our methods become medical practice. "
But people especially not that more put on, just like the revolutionary research.Humanity is getting older every year and believes that Professor Teng May and other medical professionals succeed.
study on tissue culture of adult stem cells, is dedicated to the work of an employee of the University of Florida, Warren L. Grayson Reconstructing the in vivo environment for the development of tissue-engineered constructs from human mesenchymal stem cells [PDF].