6. Aging Skin and Exosomes
Exosomes are also involved in the aging of skin, which is a concern for women.
Collagen has a significant effect on skin elasticity, which deteriorates with age.
Collagen is made of fibroblasts located in the dermis under the epidermis and is responsible for giving elasticity to the skin and supporting the epidermis by creating a mesh-like structure throughout the dermis.
Comparing the cross section of young skin with that of aged skin, the dermis of young skin supports the epidermis well, but t
at of aged skin cannot, because of broken dermis tissue.
There are still mysteries surrounding skin aging.
It has been known that ultraviolet light can produce freckles and wrinkles, but it is not known why there are differences among individuals.
Some people in their 50s look younger than their actual age, while others not.
The key for solving the mystery is thought to be in exosomes.
Exosomes delivered from aged cells were found in the vicinity of fibroblasts in the dermis.
However, the messages contained in these exosomes are still unknown.
If the number and type of the exosomes and microRNAs are analyzed in the future, mysteries regarding individual differences in skin aging and its mechanism may be solved.
Further research is eagerly awaited.