3D printing organs will not be rare artificial vascular growth seen liuxiaobo

3D printing organs will not be rare artificial vascular growth seen? LiveScience is not a difficult operation, but for children, with the growing up, but still maintain the original size of artificial blood vessels. At present, 3D printing artificial tissue or organ transplantation, and also has been gradually applied to the human experiment, for example, in 2014, the German Agency Fraunhofer had to 3D with laser processing inkjet successfully made artificial blood vessel. LiveScience however, 3D printing organs are facing an important problem is that most tissues or organs is mixed by printing "cells + binder", but it is not a long time together, and it is a smooth function in the human body, as well as for the amount of. The vascular and organ tissue compared to the volume of small and long, hollow, but also need to bear the transportation of nutrients and blood of the task, so the difficulty is to increase the number of printing. Because the material can not be changed with the growth of the human body, suffering from congenital heart disease children if an implant similar, to five to seven operations during the growth, to ensure the normal vascular connection. This way is not only costly, but also needs regular referral, much inconvenience. If the blood vessels can grow after implantation. Now this dream will come true. Recently, University of Minnesota has successfully developed its own growth of blood vessels, and successfully tested in the lambs. The study was published in the September issue of the Journal Nature Communications. Robert, Ph.D., said, "this will be the first time the medical profession has a material implanted in the human body can grow on its own.". In the future, children with heart disease will be able to replace a number of vascular surgery with a one-time surgery." According to the study, the researchers first put the sheep cells on a special tube, and the nutrients transported to the pipe near, so that cells can absorb nutrients. With the attachment of the tube, the cell forms a certain shape, and the protein is deposited around the cell. Subsequently, the researchers will be removed from the cell, leaving the protein scaffold, which is prepared to implant the body of the sheep blood vessels". The researchers first cut the blood vessels of the heart of three young lambs to the lungs of the next five weeks, and then implanted the blood vessels. The results show that these protein scaffolds will slowly be wrapped in lamb cells, and gradually become an organic whole, with the growth of the lambs grow up. In the process of real-time tracking, the lamb has maintained a healthy state. When the lamb one year old, the volume has been increased by 4-5 times more than surgery. When the researchers took these artificial blood vessels out of their bodies again, they found that their length and width did grow up to 50%. The success of this experiment is undoubtedly beneficial to the development of biological research in the field of artificial blood vessels, but also to help more.相关的主题文章: