Living organisms experience various stresses during their lifespans. These stresses include radiation, ultraviolet rays, and chemical substances which directly damage DNA and cause cancer. Organisms are able to speedily repair … Continue Reading Study identifies genes which control cellular senescence.
In human cells, shortened telomeres, the protective caps at the ends of chromosomes, are both a sign of aging and contribute to it. The effects of chronic diseases such as … Continue Reading Researchers use dietary supplement in atherosclerotic mice to lengthen telomeres.
The use of medical imaging for heart disease has exploded in the past decade. These tests expose patients to a nontrivial amount of low-dose radiation. However, nobody really knows exactly … Continue Reading New technology identifies DNA damage in patients undergoing CT scanning.
When cells are normal and unstressed, the molecule keeps transcription moving so that genes are ‘expressed’ and RNA is jotted down more quickly. When cells are stressed and transcription runs … Continue Reading Researchers identify key molecule which halts transcription of cell’s genetic code.
Human DNA accumulates damage over time, and older people’s bodies can’t repair it as well. Many scientists believe a build up of damage can cause cells to enter an irreversible … Continue Reading Study identifies molecular link between DNA damage and premature aging.