Growth factors are proteins that regulate the cell; they function by binding to specific receptor molecules in the cell membranes and thereby stimulating receptor-mediated activation of intracellular signal transduction pathways. These pathways are activated beginning with stimulation of tyrosine kinase to phosphorylate other proteins. These are both stimulatory and inhibitory growth factors. (more…)
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 ...
One approach to understanding the senescent growth arrest is to examine the factors that are required for the division of young ...
The classical view of carcinogenesis was that it was a two-‘hit’ process – initiation (genetic) and promotion (epigenetic). How ...
The sequencing of the human genome was begun in 1990 and completed in 2003. The International Human Genome Sequencing Consortiu ...
Some researches on relation between exercise and body human health results indicate that in addition to increasing muscle capacity, physical activity can help improve strength, balance, joint mobility, flexibility, agility, the speed with which one walks and physical coordination as a whole. In addition, physical activity has effects favorably on metabolism, blood pressure regulation, and prevention of an excessive increase in weight. (more…)
Osteoporosis is disease affecting the bones, making them fragile and prone to fracture. Osteoporosis is defined as a systemic s ...
As a normal ageing process, as you grow older, you will lose muscle fiber. The composition between fats and muscles in your bod ...
Aerobic exercise is one form of exercise with low to moderate intensity which is done for a longer or a moderate duration. With ...
It has been proven over the years that strength training exercises have been used by athletes and sports enthusiasts to improve ...
With heart disease risk being the number one cause of death among older Americans, you should pay particular attention to known ...
The largest single risk factor for developing cancer is age. The incidence of cancer increases exponentially with age, although death from cancer (cancer mortality) may decline at very old age. The inevitable age-dependent rise in cancer incidence is a feature of multicellular organisms that contain a substantial fraction of mitotic cells. Organisms such as flies and worms are composed primarily of post-mitotic cells, and hence do not develop cancer. (more…)
The sequencing of the human genome was begun in 1990 and completed in 2003. The International Human Genome Sequencing Consortiu ...
The classical view of carcinogenesis was that it was a two-‘hit’ process – initiation (genetic) and promotion (epigenetic). How ...
In every population of cells there are three types of cell. The first group consists of cycling cells, which continuously proli ...
Although many possible explanations for the mechanism that underlies the Hayflick limit have been proposed, it is still not cle ...
Oncogenes are damaged versions of normal genes (‘proto-oncogenes’) that control cell growth and differentiation. It is importan ...