Aspirin and smoking affects ageing of cancer genes
Asian News International
Scientists had discovered in the 1990s that regular use of aspirin over long periods of time decreases the risk of developing colorectal cancer by an average of 40 percent, but it is unknown how exactly the drug influences the cancer risk.
According to a research led by Prof.
In order to analyze the relationships between lifestyle and genome aging, the researchers examined intestinal tissue samples of 546 healthy women over 50 years of age. They compared age-specific changes of gene markers, so-called DNA methylations, with their lifestyle factors regarding aspirin use, smoking, body mass index and hormonal replacement therapy. The most significant effects were measured for aspirin use and smoking.
Schar said that each cell's genome was like a library full of bookmarks, and the cells know which genes to read with help of these bookmarks, so that they can fulfill their specialized tasks as skin, muscle or intestinal cells.
But these markers were not very stable and change during the course of age, which lead to development of tumors, he added.
First author of the study Dr.
The study is published in the