The brain of dead pigs can be partially revived a few hours after the animal dies, US scientists have revealed. They succeeded in reviving cellular functions in the brain of the pigs for several hours after their death. As they say, this will not change the view of death, but the discovery, in all likelihood, will contribute to more effective treatment after a heart attack or a stroke.
Scientists studied the brain of 32 animals that had been slaughtered four hours earlier. In some brains, synthetic blood was released, containing oxygen, nutrients and various chemicals to slow down cell degeneration. This fluid flowed through the brain for six hours. STA was reported to have dropped a control fluid that did not contain these substances in a certain number of brain systems.
The neuroscientists of Yale University, who published the study in Nature, stress that partially revived pig’s brain did not show signs of consciousness. PHOTO: Dreamstime
In the brain that received synthetic blood, basic cell functions were restored. The structures of the blood vessels have been restored, and individual processes, such as immune responses, have been observed. This did not happen in the brain that did not receive synthetic blood. According to the Guardian, the brain that received synthetic blood after six hours was in better condition than the brain of the pigs that died one hour ago.
The survey does not change the view of death
The neuroscientists of Yale University, who published the study in Nature, stress that partially revived pig brain did not show signs of consciousness. For example, they did not notice that the various parts of the brain would send signals, so this discovery does not change the definition of death, The Guardian reported.
If researchers detected this type of activity, they should have stopped researching, since many ethical issues would arise. As the researcher Nenad Sestan explains, the team was also prepared for this scenario. In this case, they would lower the brain temperature and use anesthesia to stop the activity of the brain. “The main finding is that cells die later than we thought to date,” explains Croatian neuroscientist Nenad Sestan.
For now, methods can not yet be used on human brain, Sestan emphasizes: “These are not living brain, but cellular active brain.”
Above all, as explains Christine Grady, who deals with the question of the ethics of such experiments, there are clear and rigorous rules what scientists and doctors can do with a person after death. If they wanted to test this type of method on people, they should change the rules.
For now, these methods can not be used on human brain yet. PHOTO: iStock
New hope for treatment after a heart attack and stroke
The study showed a new way of preventing brain cells from experiencing irreparable damage if blood stops circulating and even how to maintain certain cellular functions. Sestan explains that the results exceeded expectations: “When we started this survey, we never imagined that we would come up with such findings.”
The team of researchers is convinced that a future approach could be a new way to research the brain and help research and test new ways of treating poisoning and other medical conditions that result in a blood flow to the brain, resulting in cell death. I could also contribute to the clarification of Alzheimer’s disease.
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