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Skin rejuvenation for 30 years

14.04.2022

The researchers rejuvenated the skin cells of a 53-year-old woman, making them the same as those of a 23-year-old.

Scientists from the University of Cambridge have achieved incredible results: they were able to make human skin cells look younger by as much as 30 years. Scientists believe that they can do the same with other tissues of the human body. Thus, it is possible to develop treatment for diseases that occur in older people.

The origins of the method used by scientists in the new study date back to the creation of the cloned sheep Dolly in the 90s of the last century. Then scientists wanted to create the so-called human embryonic stem cells. They hoped that in this way they could be grown into certain tissues, such as muscles, cartilage, and nerve cells, to replace worn-out body parts.

In 2006, Japanese scientists came up with a new method they called IPS. With it, scientists added chemicals to the cells of an adult organism for about 50 days. This led to genetic changes that turned adult cells into stem cells. But then it was necessary to grow these stem cells into cells and tissues that a person needs. But after so many years, this has not yet yielded the desired results.

Wolf Reik and colleagues used the IPS method on the skin cells of a 53-year-old woman. But now, in the lab, scientists have added chemicals to cells not for 50 days, but for 12. These cells did not turn into embryonic stem cells, but rejuvenated and began to look and behave like they belonged to a 23-year-old girl. But this method cannot be immediately transferred from the laboratory stage of research to the clinical stage, because the IPS method increases the risk of developing cancer.

Now that it is known that cells can be rejuvenated, an alternative, safer method can be found to create the necessary human tissues to improve health, not life expectancy.

"At a minimum, we can start by developing drugs to rejuvenate the skin of older people where this skin has been damaged. And then we will check whether our new method can be applied to other human tissues," says Reik.

Scientists say that it will be possible to try to rejuvenate immune cells so that with age a person can better cope with diseases. The question of creating an anti-aging drug is not yet on the table. But perhaps new research will lead to the fact that it will be possible to achieve regeneration of the entire body, and not of its individual sections.

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Shark Twitter 02.01.2014

Scientists in Western Australia have placed special sensors on sharks that automatically transmit messages about the approach of a predator on Twitter, Sky News reports.

The experiment, designed to reduce the number of accidents, involved 320 predators. When one of these sharks approaches the shore closer than one kilometer, the sensor sends a signal to a computer that automatically formats it into a short message posted on Twitter by Surf Life Saving Western Australia's (SLSWA). The message contains information about the size, type of shark and the approximate location of the predator.

Representatives of SLSWA argue that this way of alerting the public about a possible danger is much more effective than traditional ones, such as radio or television.

“Previously, you could not receive such information until the next day. By this time, the threat could already have passed, and the information would not be relevant. Now, threats are reported very quickly, and if you want to find them, you will find them,” the employee said. services Chris Peck.

In terms of activity of marine predators, the western coast of Australia is considered one of the most dangerous in the world. The last shark attack occurred in Western Australia on November 23rd. Then a surfer who was about 20 years old became a victim of a shark.

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