24 yr old: transected median nerve 48 days ago at wrist level - epineural repair. Tinels sign now positive just a more 24 yr old: transected median nerve 48 days ago at wrist level - epineural repair. Tinels sign now positive just an inch below index finger.
Apoptosis (from Ancient Greek á¼ÏÏÏÏÏÏÎ¹Ï falling off) is a process of programmed cell death that occurs in multicellular organisms. Biochemical events lead to characteristic cell changes (morphology) and death. These changes include blebbing, cell shrinkage, nuclear fragmentation, chromatin condensation, chromosomal DNA fragmentation, and global mRNA decay. Between 50 and 70 billion cells die each day due to apoptosis in the average human adult.
p53 is a protein that functions to block the cell cycle if the DNA is damaged. If the damage is severe this protein can cause apoptosis (cell death). 1  p53 levels are increased in damaged cells. This allows time to repair DNA by blocking the cell cycle.  A p53 mutation is the most frequent mutation leading to cancer.