Science: Israeli Scientists Unlock the Secret of Human Organ and Skin Regeneration

The skin is the first organ to show signs of aging, such as a change in skin tone or the appearance of gray hair, making it a suitable preclinical research model for studying antiaging treatments.
The process of wound healing provides a sizeable group of elderly people with significant challenges that can be difficult to overcome. Additionally, persistent skin ulcers that do not heal are a significant contributor to the morbidity and mortality of patients, in addition to the expenditures associated with receiving medical care.
The human skin has the ability to heal itself when damaged. Even though human skin has the ability to heal itself progressively, the process of doing so results in the production of contractile scars, which can lead to malfunction. In contrast, the axolotl salamander is able to recover a severed leg with ease, the spiny mouse has densely hairy skin that heals with incredible speed, and the skin of a growing human embryo has the potential to regenerate after trauma without the need for any scar formation to take place at any point in the process. As a result of analyzing these models, researchers are developing a better understanding of how a more robust regenerative response can lead to a more rapid recovery of damaged skin.
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After completing their research for the past twenty years, scientists at the Technion—Israel Institute of Technology and the Rambam Health Care Campus in Haifa have developed a technology that may renew human skin and organs. The experiment performed on laboratory mice and yielded such impressive results recently published in the journal Science Advances, issued by the American Association for the Advancement of Science (AAAS).
To illustrate that it is feasible to make skin and other organs young again by altering the molecular structure through all of the layers of skin, the authors of the study placed a graft of aged human skin on young mice. The young mice were given an injection of a serum containing growth factors to accomplish this. This was done so that they could demonstrate that it is feasible to make skin and other organs young again.
The findings of their study were published under the title "Human Organ Rejuvenation by VEGF-A: Lessons From the Skin," and the investigation was carried out by researchers from the University of Manchester and the Monasterium Laboratory in Germany.
For this study, the researchers employed young mice that were afflicted with severe combined immunodeficiency (SCID), a disorder that inhibits the function of both B and T cells. These animals were given skin grafts from older humans. The researchers believe that this can make transplanting living cells, tissues, or organs from one species to another more successful. This process is followed by the development of new blood vessels, repigmentation of the outer layer of the skin and a dramatic improvement in the signs of aging, as reported by the Washington Post.
The researchers believe that redefining aging as a "druggable and reprogrammable target, dissecting the key drivers of human organ aging and developing effective molecular strategies to prevent or even reverse it surely constitutes one of the most fundamental missions of biomedical research" rather than viewing aging as a fatal disease is one of the most important things that needs to be accomplished in the field of biomedical research.
Because the human skin is the first organ of the human body to clearly reflect changes associated with aging, such as shifts in skin tone and graying of the hair, using human skin as a preclinical research model to examine antiaging treatments is an appropriate way to conduct this type of research. This is because the human skin is the first organ of the human body to reflect changes associated with aging clearly.
According to the authors, "progress at this frontier has remained moderate at best." "many product claims of in-vivo (animal models) rejuvenation of human skin are often baseless," they continued. "many product claims of in-vivo (animal models) rejuvenation of human skin"
The fascinating research found that when human skin was grafted onto SCID mice, the surface layer of human skin was rejuvenated, and all layers of the skin may become youthful again. This suggests that human skin may be regenerated in a way that is similar to how stem cells work in the body.
They examined the process using vascular endothelial growth factor A (VEGF-A), which brought them to this result. They also found that the number of new blood vessels that grew in the skin that had been transplanted increased after the procedure.
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