An international group of researchers used blood transfusion in mice to study aging processes, a study that showed that donors who had been given blood from old individuals were temporarily receiving age changes in the body. The discovery proves that aging is an inherent property of cells.
During the experiment, researchers transfused young male mice at the age of three months with blood from older adults between 22 and 24 months of age, using mice as a control group, who were given blood from the bats, and then tested the test subjects for muscle strength and endurance.
The study showed that the mice that were given the "old" blood became weaker, had a lower rate of movement and stamina. Compared to the control group, the muscles of these animals were reduced and more relaxed; they also showed signs of kidney damage and liver ageing; while the blood was treated with seniles, all the effects of aging were lost before they were transfused.
The authors believe that cellular ageing is not just a reaction to stress and injury that increases with age, nor is it a time-specific phenomenon that can be transmitted with blood. Old cells — old cells that have ceased to reproduce but have not been removed from the body — affect young organisms by causing work disorders.
Scientists believe that by studying ageing processes, one can learn to slow it down, for example by removing aging cells and rejuvenating blood.