American scientists first successfully froze and thawed bodies


2017-03-03 13:30:05




1Like 0Dislike


One of the main problems of transplantation is that organs intended for transplantation, very few «live» outside of the human body. But all may soon change, because, according to published in the journal Science Translational Medicine, American doctors have been successfully thawed pieces of frozen tissues and organs, without damaging the very cellular structure and intercellular space.

First, let's say, why not just freeze the bodies. The fact that the freezing process in tissues are formed by ice crystals which can injure the body from within. But if you freeze authority is somehow possible (substances for this purpose was created 20 years ago), but with defrost much more complicated: after «return body to original appearance» survival of about 80% of the cells, which is insufficient for full operation.

A Group of scientists from the University of Minnesota in Minneapolis under the leadership of Dr. John Bischof was able to solve the issue. According to them, the main problem with thawing is that of frozen tissue are warmed up uneven way, causing them to crack and fall apart. To help the experts came nanoparticles: they drew attention to the fact that microscopic fragments of iron and many other metals can be heated to extremely high temperatures. These same nanoparticles can be applied for instant defrosting bodies. The addition of even a small number of nanoparticles in tissues protects cells from damage and helps to unfreeze the bodies very quickly. The assurances of Dr. Bischof,

«We were the first to show that we can take bulk samples of biota and quickly defrost it without damaging tissues, increasing the temperature to hundreds of degrees per minute. These results make us happy and allow us to hope that in the future we will be able to create entire banks of frozen organs for transplantation».

materials of agencies of RIA «news»


Russia has created an artificial child's heart with a two-year lifespan

heart transplantation saves thousands of lives, but waiting a donor organ could last for quite a long time. To live up to this moment help of an artificial heart that already exist in , but are crazy money. Researchers from Russian military plant "Pr...

Dormant viruses awaken during space flights

the Virus cold sores activated again at more than half of the crew aboard the space Shuttle and the International space station, shows a study published in Frontiers in Microbiology. While the symptoms showed only a small proportion, the rate of reac...

"Smart capsule" RaniPill makes painless injections inside the intestines

Patients with diabetes of the first type by an annual average of have to do 700-1000 injections of insulin. Hormone disorder acromegaly causes people to go to doctors and receive very painful injections into the muscle once a month. Some people with ...

Comments (0)

This article has no comment, be the first!

Add comment

Related News

Russian scientists have developed unique technology to create artificial blood vessels

according to the Agency «RIA» with reference to the press service of the Novosibirsk state University (NSU), Novosibirsk a large group of scientists, including experts from the Institute of Cytology and genetics, Siberia...

Created nanorobots capable of moving in a liquid medium in a new way

Tiny nanobots, development and improvement of which lately is particularly active, have great potential in medical practice: from targeted drug delivery to diagnostics of diseases, destruction of blood clots and plaque, and even o...

For the treatment of high blood pressure first used deep brain stimulation

hypertension, or simply high blood pressure, — the phenomenon is not that rare, but quite dangerous. Even a slight chronic increase in pressure is able to cause serious changes in the body. The increase of pressure up to 150...