Although many possible explanations for the mechanism that underlies the Hayflick limit have been proposed, it is still not clear what triggers the irreversible growth arrest seen in cellular senescent. A loss of telomeres, DNA at the end of each chromosome, has been considered an attractive candidate for the senescent trigger. The hypothesis was that a small amount of the telomere at the end of the chromosome (which is linear) is lost at each cell division due to the directionality of DNA polymerase. DNA polymerase can completely replicate one strand of DNA but cannot begin at the very end of the opposite strand. (more…)
Although we have not identified the genes controlling human life span, there is a genetic element called a telomere that clearly re ...
One approach to understanding the senescent growth arrest is to examine the factors that are required for the division of young ...
Hayflick suggested that the aging process was by a biological clock, which includes all living cells, controlled. The study found t ...
Oncogenes are damaged versions of normal genes (‘proto-oncogenes’) that control cell growth and differentiation. It is importan ...
In every population of cells there are three types of cell. The first group consists of cycling cells, which continuously proli ...
By Blogsdna
Hayflick suggested that the aging process was by a biological clock, which includes all living cells, controlled. The study found that in 1961 human fibroblast cells (lung, skin, muscles, heart) have a limited lifespan. Nutrition appears to affect the rate of cell division are: cell consists of 50 departments in a supercharged year, while the cells fed up to three times longer than normal cells to divide. (more…)
Although we have not identified the genes controlling human life span, there is a genetic element called a telomere that clearly re ...
Although many possible explanations for the mechanism that underlies the Hayflick limit have been proposed, it is still not cle ...
Aging in human is a combination of two ageing processes: development or maturation, and senescence aging or decline. Developmen ...
Dyskeratosis congenita is of special interest to gerontologists because it is caused by a mutation in the gene coding for the ...
Much of cell death is genetically programmed by the process called apoptosis. In apoptosis, when the cell is damaged, the DNA i ...
By Blogsdna
Aging is not only about old age. This is an ongoing process which will define the stages of biological, psychological and social conditions in human lives. Aging has limit for averages human life expectancy rate. For centuries, many have tried modern science to delay human life expectancy rate so much from this frightening condition of man. There are millions of websites on the internet providing information on aging and more than half a million consultations related searches information on how to alter averages human life expectancy rate. (more…)
We do not realize the mechanisms of biological aging or the reasons for aging are the limits of the estimated averages life expecta ...
Aging begins before we are born, is a lifelong process and continues throughout life. Throughout the life course, differing lif ...
Approximately 35% of the factors that influence life expectancy are inherited. Accelerated aging is therefore usually associated wi ...
Hayflick suggested that the aging process was by a biological clock, which includes all living cells, controlled. The study found t ...
The population of man aged over 65 will exceed the number of children under 5 years old in 2040, for the first time in history, ...
By Blogsdna
Aging in human is a combination of two ageing processes: development or maturation, and senescence aging or decline. Development or maturation is the positive aspect of aging; humans typically acquire greater wisdom, experience, and expertise in specific fields as they grow older. Senescence aging, on the other hand, (more…)
Back pain is a real pain in your back! You want relief now but would like to try some natural home remedies before resorting to pre ...
Prevention is the best cure for back pain. If I had practice proper lifting techniques and /or the box I lifted had been proper ...
With heart disease risk being the number one cause of death among older Americans, you should pay particular attention to known ...
I've been noticing my body's growing inclination to slow down, how it's starting to get tougher to get off the couch, how it ta ...
By Blogsdna
Although we have not identified the genes controlling human life span, there is a genetic element called a telomere that clearly regulates the replicative life span of human cells in culture. A telomere is a simple DNA sequence that is repeated many times, located at the tips of each chromosome. Telomeres are not genes, but they are needed for the proper duplication of the chromosomes in dividing cells. (more…)
Hayflick suggested that the aging process was by a biological clock, which includes all living cells, controlled. The study found t ...
Although many possible explanations for the mechanism that underlies the Hayflick limit have been proposed, it is still not cle ...
Aging theories cover the physiological, genetic, biochemical properties of a typical organism, and the way these properties cha ...
Aging in human is a combination of two ageing processes: development or maturation, and senescence aging or decline. Developmen ...
Aging theories cover the biochemical, genetic, and physiological properties of a typical organism, and the way these propertie ...
By Blogsdna