Can cell damage be reversed?
Types of damage.
Some cell damage can be reversed once the stress is removed or if compensatory cellular changes occur.
Full function may return to cells but in some cases a degree of injury will remain.
Can DNA damage be repaired?
DNA damage repair mechanisms. Repair processes that help fix damaged DNA include: Direct reversal: Some DNA-damaging chemical reactions can be directly “undone” by enzymes in the cell. Excision repair: Damage to one or a few bases of DNA is often fixed by removal (excision) and replacement of the damaged region.
Can DNA heal itself?
Some lesions in DNA, however, can be repaired by direct reversal of the damage, which may be a more efficient way of dealing with specific types of DNA damage that occur frequently. The original pyrimidine bases remain in DNA, now restored to their normal state.
What happens when DNA is damaged?
The DNA in just one of your cells gets damaged tens of thousands of times per day. Because DNA provides the blueprint for the proteins your cells need to function, this damage can cause serious issues—including cancer. Monica Menesini details the processes of DNA damage and repair.
Photo in the article by “Flickr”