Science

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

Since ancient times, many emperors and generals are looking for the elixir of immortality, but do not know that old age, sickness and death is the unchanging law of all things. In the face of death, is it really irreversible? In today's advanced medical science, the definition of death will be changed again, such as those who have died and their bodies are placed in the morgue, maybe they may not be dead, why is that?

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

Death can be reversed? What's going on here?

In the first half of this year, a scientific experiment was published in Nature in which scientists used a perfusion system to directly restore some of the brain functions of a dead pig, in which the venous and capillary networks and the intracerebral arteries all functioned normally, while synapses, axons and other neurological functions were maintained.

The experiment was studied by scientists at Yale University, and the experimental system they used throughout the experiment consisted of a set of circulation monitoring sensors, filters and pumps. The experiment was divided into two parts, a perfusion system and a synthetic perfusion fluid. The former system was divided into a centrifugal pump with a pulse generator that was able to provide physiological pressure fluctuations.

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

The subject of this experimental study was chosen to be the carcass of a pig that had been dead for an hour. The researchers delivered a variety of drug fluids directly to the organs of the dead pig through this experimental system, and when the system was successfully connected to the carcass, it was not expected that the heart of the dead pig could directly resume beating, and the brain and parts of the lungs, liver and kidneys also recovered their functions.

So, does this experimental study mean that death can be reversed? We named the experimental system OrganEx, which means that the cells in the dead pig were not supposed to be working, which means that we effectively stopped the cells from dying," said Sestan, a professor of neuroscience at Yale School of Medicine. Within an hour of this pig's death, we had the entire blood circulation system of the pig working through the experimental system, and this breakthrough in experimental research could mean that the meaning of death itself is about to be rewritten."

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

"We hope that this experimental system can be used to preserve or repair organs and directly help expand the supply of human organs available for transplantation, although it is still a long way off to actually achieve this goal, as it will take us a long time to improve this experimental system and thus allow it to be tested in humans."

It is worth mentioning that this scientific experimental study was able to solve the key problem of organ shortage, in other words death can be reversed. For this scientific experiment research, some netizens have left comments saying, "If death can be reversed, then does it mean breaking the law of birth, old age, sickness and death in the natural world?" "I feel that this scientific experiment violates moral ethics." "It's still a good study, at least for those patients who need human organ transplants."

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

Can death be reversed and are the bodies in the morgue not yet dead?

In the traditional sense, our understanding of life is that brain death represents the end of life. In the absence of any outside intervention, brain nerve death within seven minutes, heart stop beating within 15 minutes, and lungs stop working within an hour are the gold standard for determining death. So, is a person declared dead when one organ dies or is it the death of all organs that counts as death?

As medicine continues to advance, we have discovered that when a person dies, even after being sent to the morgue, the cells in his body are still alive. Then as to how long these cells actually survive, this question has been troubling the scientific community for a long time, for example, muscle cells will die within 2 to 8 hours of a person's death, while kidney cells die in 90 to 120 minutes, although these times are obtained as an average, but no matter which tissue cells, after the death of the owner, it is difficult to escape death.

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

If death is medically reversible, does that mean that the body in the morgue is not dead yet? In fact, without human intervention, some organs can continue to work for several hours after death. For example, 10 hours after a person dies, the cilia of the fibrous epithelium of the tracheal mucosa are still in motion. For 30 hours after death, the sweat glands still respond to adrenaline by sweating. At room temperature, the liver in a person's corpse will stop working due to lack of blood for more than twenty or thirty minutes.

So overall, on the surface, the body in the morgue is dead and certain organs have stopped working, but some of these organs and cells can still function for some time. A medical declaration of death does not mean that all organ function is lost.

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

Can this OrganEx experiment work on humans?

As we can see from the OrganEx technology, the focus of this experimental system is to directly restore the brain function of the dead pig, allowing both oxygen and nutrients to enter the tiny blood vessels in the pig's brain.

For this experiment, some people can't help but question, "Can it work directly into the human body?" In the history of human development, death is not only a relatively terrible thing, but also a very simple thing, so can this experimental research that works on pigs be applied to humans? Can human death be reversed?

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

Some researchers say OrganEx technology may also be used to revive human organs, and Sam Parnia of New York University's Grossman School of Medicine describes the experiment as "remarkable and significant. The results of this experimental study show that death is not black and white, and that biological processes can be treated or reversed hours after death occurs. "

In conventional medicine, a person is defined as truly dead when his or her body functions stop working for a few hours, but in fact, if this definition is considered valid, it is possible that the bodies currently in the morgue are still not dead, i.e., until the future when this technology matures to revive vital organs and prolong a person's life.

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

Does this OrganEx experiment violate ethics?

This pilot study may have practical and ethical implications for organ donation, and the real beneficiaries of OrganEx's experimental technology, if it is applied and replicated, will be those who need to wait for organ transplants.

In the short term, under existing conditions, no researcher has been able to detect brain death after it is recoverable. In response, Palden, director of transplant ethics and policy research at New York University's Grossman School of Medicine, said, "In fact, with experimental research like this, we have an ethical responsibility to prioritize saving lives with it before considering its benefits for organ transplantation."

Death can be reversed? Definition of death may change, people in the morgue may not even be dead yet

It must be said that such scientific experimental research projects are more validation and application, if it really works in the human body to reverse death, perhaps this will break the natural law of life, death, sickness and old age. Experiments are experiments, as long as they are not widely promoted and applied, and do not easily reverse death, it can still be accepted. After all, compared to dead people, having an immortal body is the most frightening.