Those wrinkles on the corners of the eye deserve to be called “laughter lines,” according to a recent investigation.
Using skin samples of people with ages between 16 and 91 yearsthe research team at the University of Binghamton, in Nine York, confirmed that repeated stretch and release of the skin in a direction tension the aged fabric in a way that originates wrinkles.
“This is no longer just a theory“ Guy Germanbiomedical engineer. “We now have concrete experimental proofs that demonstrate the physical mechanism underlying aging.”
Although previous studies have explored the mechanics of stress and dermal degradation, this investigation, in the Journal of the Mechanical Behavior of Biomedical Materialsis the first to physically test real samples of skin COm an instrument called Tensómetro of low force and observing the changes resulting from the microscope.
The tension applied by the tensometer was intended to imitate the wear and tear of daily life. The researchers found that the Skin contraction movements Made in response to the stretches increased with age, causing bending and wrinkles.
According to, the researchers found that our skin is also in a Semi-Setable State and that these forces also change as we move on in life. The outer layer (stratum) becomes gradually more rigid, while the underlying layer becomes softer as the density of its collagen structure decreases.
Over time, the skin loses volume by expelling fluids, according to the team’s experiences, which It aggravates the effects of wrinkles.
This POROELASTIC QUALITY skin is significant and It had never been registered before.
“If we stretch Silly Putty [brinquedo que contém polímeros de silicone com propriedades físicas incomuns]for example, it stretches horizontally, but also shrinks in the other direction – it gets thinner, ”says German.” That’s what the skin does. “
“As we get older, this contraction increases. And If the skin contracts too much, it is doubled. This is how the wrinkles are formed. ”
The investigation is more than just knowing where wrinkles come from. By understanding the characteristics of our skin and the way they change over time, we can better understand (and Treat) a variety of different skin diseases.
Investigators are not only interested in outer skin: they suggest that their work may have implications for modeling other tissues. These techniques could also be applied to brain wrinkles, for example.
The findings here can also be important when it comes to taking care of the skin-and evaluating the effectiveness of various anti-aging products for the skin (especially since there are so many competing for our attention).
In addition, researchers establish the connection between the Effects of chronological aging on the skin and the harmful effects of exposure to ultraviolet radiation Sun – Something sunscreen can help prevent.
“If we spend our lives working outdoors, we are more likely to have a more aged and wrinkled skin than those who work in offices, for example,” concludes German.
Teresa Oliveira Campos, Zap //
