Nanoparticles do not damage DNA across barriers by signaling molecules
Ionizing radiation emitted by nanoparticles damages the DNA by penetrating barriers instead of the nanoparticle signaling across the barrier for the DNA to be damaged
DNA damage
Newly discovered cellular process helps cells respond to DNA damage
Scientists at St. Jude Children’s Research Hospital have discovered a novel biochemical process that plays a critical role in helping cells in the body respond to DNA damage, such as that caused by exposure to radiation, environmental toxins or free radicals. The findings could lead to new approaches to prevent cancer, better ways to treat cancer and to the development of sensitive methods determining whether people have been exposed to radiation or environmental toxins, according to the researchers.
Research reveals a cellular basis for a male biological clock
Researchers have discovered a cellular basis for what many have long suspected: Men, as well as women, have a reproductive clock that ticks down with age. A recent study revealed that sperm in men older than 35 showed more DNA damage than that of men in the younger age group. In addition, the older men’s bodies appeared less efficient at eliminating the damaged cells, which could pass along problems to offspring