What are some cell stressors? How do cells eliminate/deal with stressors or their products? What happens if cells can’t remove/adapt to cell stressors?. 2H2O2 to 2H2O + O2. 2GSH + H2O2 → GSSG + 2H2O. Glutathione Peroxidase.
How do cells eliminate/deal with stressors or their products?
What happens if cells can’t remove/adapt to cell stressors?
In humans, by the time we are 80 years old our cells have lost 40-90% of their ability to make new proteins. In laboratory rats, old adults lose as much as 80% of their ability to form proteins. Protein synthesis by the mitochondria of old mice is only half of that in young mice.
The loss of the ability for protein synthesis has potentially serious consequences:
1. The protein-forming machinery fails to replace damaged proteins in a timely fashion.2. There is a fall in the activity of proteins, because they are replaced too slowly when they wear out.3. Worn-out proteins accumulate in old cells. In young cells, special proteins (proteases) break down worn-out proteins for recycling into new proteins.